duke@435: /* duke@435: * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. duke@435: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@435: * duke@435: * This code is free software; you can redistribute it and/or modify it duke@435: * under the terms of the GNU General Public License version 2 only, as duke@435: * published by the Free Software Foundation. duke@435: * duke@435: * This code is distributed in the hope that it will be useful, but WITHOUT duke@435: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@435: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@435: * version 2 for more details (a copy is included in the LICENSE file that duke@435: * accompanied this code). duke@435: * duke@435: * You should have received a copy of the GNU General Public License version duke@435: * 2 along with this work; if not, write to the Free Software Foundation, duke@435: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@435: * duke@435: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, duke@435: * CA 95054 USA or visit www.sun.com if you need additional information or duke@435: * have any questions. duke@435: * duke@435: */ duke@435: duke@435: #if !defined(COMPILER1) && !defined(COMPILER2) duke@435: define_pd_global(bool, BackgroundCompilation, false); duke@435: define_pd_global(bool, UseTLAB, false); duke@435: define_pd_global(bool, CICompileOSR, false); duke@435: define_pd_global(bool, UseTypeProfile, false); duke@435: define_pd_global(bool, UseOnStackReplacement, false); duke@435: define_pd_global(bool, InlineIntrinsics, false); duke@435: define_pd_global(bool, PreferInterpreterNativeStubs, true); duke@435: define_pd_global(bool, ProfileInterpreter, false); duke@435: define_pd_global(bool, ProfileTraps, false); duke@435: define_pd_global(bool, TieredCompilation, false); duke@435: duke@435: define_pd_global(intx, CompileThreshold, 0); duke@435: define_pd_global(intx, Tier2CompileThreshold, 0); duke@435: define_pd_global(intx, Tier3CompileThreshold, 0); duke@435: define_pd_global(intx, Tier4CompileThreshold, 0); duke@435: duke@435: define_pd_global(intx, BackEdgeThreshold, 0); duke@435: define_pd_global(intx, Tier2BackEdgeThreshold, 0); duke@435: define_pd_global(intx, Tier3BackEdgeThreshold, 0); duke@435: define_pd_global(intx, Tier4BackEdgeThreshold, 0); duke@435: duke@435: define_pd_global(intx, OnStackReplacePercentage, 0); duke@435: define_pd_global(bool, ResizeTLAB, false); duke@435: define_pd_global(intx, FreqInlineSize, 0); duke@435: define_pd_global(intx, NewSizeThreadIncrease, 4*K); duke@435: define_pd_global(intx, NewRatio, 4); duke@435: define_pd_global(intx, InlineClassNatives, true); duke@435: define_pd_global(intx, InlineUnsafeOps, true); duke@435: define_pd_global(intx, InitialCodeCacheSize, 160*K); duke@435: define_pd_global(intx, ReservedCodeCacheSize, 32*M); duke@435: define_pd_global(intx, CodeCacheExpansionSize, 32*K); duke@435: define_pd_global(intx, CodeCacheMinBlockLength, 1); duke@435: define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); duke@435: define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); duke@435: define_pd_global(bool, NeverActAsServerClassMachine, true); duke@435: define_pd_global(uintx, DefaultMaxRAM, 1*G); duke@435: #define CI_COMPILER_COUNT 0 duke@435: #else duke@435: duke@435: #ifdef COMPILER2 duke@435: #define CI_COMPILER_COUNT 2 duke@435: #else duke@435: #define CI_COMPILER_COUNT 1 duke@435: #endif // COMPILER2 duke@435: duke@435: #endif // no compilers duke@435: duke@435: duke@435: // string type aliases used only in this file duke@435: typedef const char* ccstr; duke@435: typedef const char* ccstrlist; // represents string arguments which accumulate duke@435: duke@435: enum FlagValueOrigin { duke@435: DEFAULT = 0, duke@435: COMMAND_LINE = 1, duke@435: ENVIRON_VAR = 2, duke@435: CONFIG_FILE = 3, duke@435: MANAGEMENT = 4, duke@435: ERGONOMIC = 5, duke@435: ATTACH_ON_DEMAND = 6, duke@435: INTERNAL = 99 duke@435: }; duke@435: duke@435: struct Flag { duke@435: const char *type; duke@435: const char *name; duke@435: void* addr; duke@435: const char *kind; duke@435: FlagValueOrigin origin; duke@435: duke@435: // points to all Flags static array duke@435: static Flag *flags; duke@435: duke@435: // number of flags duke@435: static size_t numFlags; duke@435: duke@435: static Flag* find_flag(char* name, size_t length); duke@435: duke@435: bool is_bool() const { return strcmp(type, "bool") == 0; } duke@435: bool get_bool() const { return *((bool*) addr); } duke@435: void set_bool(bool value) { *((bool*) addr) = value; } duke@435: duke@435: bool is_intx() const { return strcmp(type, "intx") == 0; } duke@435: intx get_intx() const { return *((intx*) addr); } duke@435: void set_intx(intx value) { *((intx*) addr) = value; } duke@435: duke@435: bool is_uintx() const { return strcmp(type, "uintx") == 0; } duke@435: uintx get_uintx() const { return *((uintx*) addr); } duke@435: void set_uintx(uintx value) { *((uintx*) addr) = value; } duke@435: duke@435: bool is_double() const { return strcmp(type, "double") == 0; } duke@435: double get_double() const { return *((double*) addr); } duke@435: void set_double(double value) { *((double*) addr) = value; } duke@435: duke@435: bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } duke@435: bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } duke@435: ccstr get_ccstr() const { return *((ccstr*) addr); } duke@435: void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } duke@435: duke@435: bool is_unlocker() const; duke@435: bool is_unlocked() const; duke@435: bool is_writeable() const; duke@435: bool is_external() const; duke@435: duke@435: void print_on(outputStream* st); duke@435: void print_as_flag(outputStream* st); duke@435: }; duke@435: duke@435: // debug flags control various aspects of the VM and are global accessible duke@435: duke@435: // use FlagSetting to temporarily change some debug flag duke@435: // e.g. FlagSetting fs(DebugThisAndThat, true); duke@435: // restored to previous value upon leaving scope duke@435: class FlagSetting { duke@435: bool val; duke@435: bool* flag; duke@435: public: duke@435: FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } duke@435: ~FlagSetting() { *flag = val; } duke@435: }; duke@435: duke@435: duke@435: class CounterSetting { duke@435: intx* counter; duke@435: public: duke@435: CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } duke@435: ~CounterSetting() { (*counter)--; } duke@435: }; duke@435: duke@435: duke@435: class IntFlagSetting { duke@435: intx val; duke@435: intx* flag; duke@435: public: duke@435: IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } duke@435: ~IntFlagSetting() { *flag = val; } duke@435: }; duke@435: duke@435: duke@435: class DoubleFlagSetting { duke@435: double val; duke@435: double* flag; duke@435: public: duke@435: DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } duke@435: ~DoubleFlagSetting() { *flag = val; } duke@435: }; duke@435: duke@435: duke@435: class CommandLineFlags { duke@435: public: duke@435: static bool boolAt(char* name, size_t len, bool* value); duke@435: static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } duke@435: static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); duke@435: static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } duke@435: duke@435: static bool intxAt(char* name, size_t len, intx* value); duke@435: static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } duke@435: static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); duke@435: static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } duke@435: duke@435: static bool uintxAt(char* name, size_t len, uintx* value); duke@435: static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } duke@435: static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); duke@435: static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } duke@435: duke@435: static bool doubleAt(char* name, size_t len, double* value); duke@435: static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } duke@435: static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); duke@435: static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } duke@435: duke@435: static bool ccstrAt(char* name, size_t len, ccstr* value); duke@435: static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } duke@435: static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); duke@435: static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } duke@435: duke@435: // Returns false if name is not a command line flag. duke@435: static bool wasSetOnCmdline(const char* name, bool* value); duke@435: static void printSetFlags(); duke@435: duke@435: static void printFlags() PRODUCT_RETURN; duke@435: duke@435: static void verify() PRODUCT_RETURN; duke@435: }; duke@435: duke@435: // use this for flags that are true by default in the debug version but duke@435: // false in the optimized version, and vice versa duke@435: #ifdef ASSERT duke@435: #define trueInDebug true duke@435: #define falseInDebug false duke@435: #else duke@435: #define trueInDebug false duke@435: #define falseInDebug true duke@435: #endif duke@435: duke@435: // use this for flags that are true per default in the product build duke@435: // but false in development builds, and vice versa duke@435: #ifdef PRODUCT duke@435: #define trueInProduct true duke@435: #define falseInProduct false duke@435: #else duke@435: #define trueInProduct false duke@435: #define falseInProduct true duke@435: #endif duke@435: duke@435: // use this for flags that are true per default in the tiered build duke@435: // but false in non-tiered builds, and vice versa duke@435: #ifdef TIERED duke@435: #define trueInTiered true duke@435: #define falseInTiered false duke@435: #else duke@435: #define trueInTiered false duke@435: #define falseInTiered true duke@435: #endif duke@435: duke@435: duke@435: // develop flags are settable / visible only during development and are constant in the PRODUCT version duke@435: // product flags are always settable / visible duke@435: // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version duke@435: duke@435: // A flag must be declared with one of the following types: duke@435: // bool, intx, uintx, ccstr. duke@435: // The type "ccstr" is an alias for "const char*" and is used duke@435: // only in this file, because the macrology requires single-token type names. duke@435: duke@435: // Note: Diagnostic options not meant for VM tuning or for product modes. duke@435: // They are to be used for VM quality assurance or field diagnosis duke@435: // of VM bugs. They are hidden so that users will not be encouraged to duke@435: // try them as if they were VM ordinary execution options. However, they duke@435: // are available in the product version of the VM. Under instruction duke@435: // from support engineers, VM customers can turn them on to collect duke@435: // diagnostic information about VM problems. To use a VM diagnostic duke@435: // option, you must first specify +UnlockDiagnosticVMOptions. duke@435: // (This master switch also affects the behavior of -Xprintflags.) duke@435: duke@435: // manageable flags are writeable external product flags. duke@435: // They are dynamically writeable through the JDK management interface duke@435: // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. duke@435: // These flags are external exported interface (see CCC). The list of duke@435: // manageable flags can be queried programmatically through the management duke@435: // interface. duke@435: // duke@435: // A flag can be made as "manageable" only if duke@435: // - the flag is defined in a CCC as an external exported interface. duke@435: // - the VM implementation supports dynamic setting of the flag. duke@435: // This implies that the VM must *always* query the flag variable duke@435: // and not reuse state related to the flag state at any given time. duke@435: // - you want the flag to be queried programmatically by the customers. duke@435: // duke@435: // product_rw flags are writeable internal product flags. duke@435: // They are like "manageable" flags but for internal/private use. duke@435: // The list of product_rw flags are internal/private flags which duke@435: // may be changed/removed in a future release. It can be set duke@435: // through the management interface to get/set value duke@435: // when the name of flag is supplied. duke@435: // duke@435: // A flag can be made as "product_rw" only if duke@435: // - the VM implementation supports dynamic setting of the flag. duke@435: // This implies that the VM must *always* query the flag variable duke@435: // and not reuse state related to the flag state at any given time. duke@435: // duke@435: // Note that when there is a need to support develop flags to be writeable, duke@435: // it can be done in the same way as product_rw. duke@435: duke@435: #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, notproduct, manageable, product_rw) \ duke@435: \ duke@435: /* UseMembar is theoretically a temp flag used for memory barrier \ duke@435: * removal testing. It was supposed to be removed before FCS but has \ duke@435: * been re-added (see 6401008) */ \ duke@435: product(bool, UseMembar, false, \ duke@435: "(Unstable) Issues membars on thread state transitions") \ duke@435: \ duke@435: product(bool, PrintCommandLineFlags, false, \ duke@435: "Prints flags that appeared on the command line") \ duke@435: \ duke@435: diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ duke@435: "Enable processing of flags relating to field diagnostics") \ duke@435: \ duke@435: product(bool, JavaMonitorsInStackTrace, true, \ duke@435: "Print info. about Java monitor locks when the stacks are dumped")\ duke@435: \ duke@435: product_pd(bool, UseLargePages, \ duke@435: "Use large page memory") \ duke@435: \ duke@435: develop(bool, TracePageSizes, false, \ duke@435: "Trace page size selection and usage.") \ duke@435: \ duke@435: product(bool, UseNUMA, false, \ duke@435: "Use NUMA if available") \ duke@435: \ duke@435: product(intx, NUMAChunkResizeWeight, 20, \ duke@435: "Percentage (0-100) used to weight the current sample when " \ duke@435: "computing exponentially decaying average for " \ duke@435: "AdaptiveNUMAChunkSizing") \ duke@435: \ duke@435: product(intx, NUMASpaceResizeRate, 1*G, \ duke@435: "Do not reallocate more that this amount per collection") \ duke@435: \ duke@435: product(bool, UseAdaptiveNUMAChunkSizing, true, \ duke@435: "Enable adaptive chunk sizing for NUMA") \ duke@435: \ duke@435: product(bool, NUMAStats, false, \ duke@435: "Print NUMA stats in detailed heap information") \ duke@435: \ duke@435: product(intx, NUMAPageScanRate, 256, \ duke@435: "Maximum number of pages to include in the page scan procedure") \ duke@435: \ duke@435: product_pd(bool, NeedsDeoptSuspend, \ duke@435: "True for register window machines (sparc/ia64)") \ duke@435: \ duke@435: product(intx, UseSSE, 99, \ duke@435: "Highest supported SSE instructions set on x86/x64") \ duke@435: \ duke@435: product(uintx, LargePageSizeInBytes, 0, \ duke@435: "Large page size (0 to let VM choose the page size") \ duke@435: \ duke@435: product(uintx, LargePageHeapSizeThreshold, 128*M, \ duke@435: "Use large pages if max heap is at least this big") \ duke@435: \ duke@435: product(bool, ForceTimeHighResolution, false, \ duke@435: "Using high time resolution(For Win32 only)") \ duke@435: \ duke@435: develop(bool, TraceItables, false, \ duke@435: "Trace initialization and use of itables") \ duke@435: \ duke@435: develop(bool, TracePcPatching, false, \ duke@435: "Trace usage of frame::patch_pc") \ duke@435: \ duke@435: develop(bool, TraceJumps, false, \ duke@435: "Trace assembly jumps in thread ring buffer") \ duke@435: \ duke@435: develop(bool, TraceRelocator, false, \ duke@435: "Trace the bytecode relocator") \ duke@435: \ duke@435: develop(bool, TraceLongCompiles, false, \ duke@435: "Print out every time compilation is longer than " \ duke@435: "a given threashold") \ duke@435: \ duke@435: develop(bool, SafepointALot, false, \ duke@435: "Generates a lot of safepoints. Works with " \ duke@435: "GuaranteedSafepointInterval") \ duke@435: \ duke@435: product_pd(bool, BackgroundCompilation, \ duke@435: "A thread requesting compilation is not blocked during " \ duke@435: "compilation") \ duke@435: \ duke@435: product(bool, PrintVMQWaitTime, false, \ duke@435: "Prints out the waiting time in VM operation queue") \ duke@435: \ duke@435: develop(bool, BailoutToInterpreterForThrows, false, \ duke@435: "Compiled methods which throws/catches exceptions will be " \ duke@435: "deopt and intp.") \ duke@435: \ duke@435: develop(bool, NoYieldsInMicrolock, false, \ duke@435: "Disable yields in microlock") \ duke@435: \ duke@435: develop(bool, TraceOopMapGeneration, false, \ duke@435: "Shows oopmap generation") \ duke@435: \ duke@435: product(bool, MethodFlushing, true, \ duke@435: "Reclamation of zombie and not-entrant methods") \ duke@435: \ duke@435: develop(bool, VerifyStack, false, \ duke@435: "Verify stack of each thread when it is entering a runtime call") \ duke@435: \ duke@435: develop(bool, ForceUnreachable, false, \ duke@435: "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ duke@435: \ duke@435: notproduct(bool, StressDerivedPointers, false, \ duke@435: "Force scavenge when a derived pointers is detected on stack " \ duke@435: "after rtm call") \ duke@435: \ duke@435: develop(bool, TraceDerivedPointers, false, \ duke@435: "Trace traversal of derived pointers on stack") \ duke@435: \ duke@435: notproduct(bool, TraceCodeBlobStacks, false, \ duke@435: "Trace stack-walk of codeblobs") \ duke@435: \ duke@435: product(bool, PrintJNIResolving, false, \ duke@435: "Used to implement -v:jni") \ duke@435: \ duke@435: notproduct(bool, PrintRewrites, false, \ duke@435: "Print methods that are being rewritten") \ duke@435: \ duke@435: product(bool, UseInlineCaches, true, \ duke@435: "Use Inline Caches for virtual calls ") \ duke@435: \ duke@435: develop(bool, InlineArrayCopy, true, \ duke@435: "inline arraycopy native that is known to be part of " \ duke@435: "base library DLL") \ duke@435: \ duke@435: develop(bool, InlineObjectHash, true, \ duke@435: "inline Object::hashCode() native that is known to be part " \ duke@435: "of base library DLL") \ duke@435: \ duke@435: develop(bool, InlineObjectCopy, true, \ duke@435: "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ duke@435: \ duke@435: develop(bool, InlineNatives, true, \ duke@435: "inline natives that are known to be part of base library DLL") \ duke@435: \ duke@435: develop(bool, InlineMathNatives, true, \ duke@435: "inline SinD, CosD, etc.") \ duke@435: \ duke@435: develop(bool, InlineClassNatives, true, \ duke@435: "inline Class.isInstance, etc") \ duke@435: \ duke@435: develop(bool, InlineAtomicLong, true, \ duke@435: "inline sun.misc.AtomicLong") \ duke@435: \ duke@435: develop(bool, InlineThreadNatives, true, \ duke@435: "inline Thread.currentThread, etc") \ duke@435: \ duke@435: develop(bool, InlineReflectionGetCallerClass, true, \ duke@435: "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ duke@435: "of base library DLL") \ duke@435: \ duke@435: develop(bool, InlineUnsafeOps, true, \ duke@435: "inline memory ops (native methods) from sun.misc.Unsafe") \ duke@435: \ duke@435: develop(bool, ConvertCmpD2CmpF, true, \ duke@435: "Convert cmpD to cmpF when one input is constant in float range") \ duke@435: \ duke@435: develop(bool, ConvertFloat2IntClipping, true, \ duke@435: "Convert float2int clipping idiom to integer clipping") \ duke@435: \ duke@435: develop(bool, SpecialStringCompareTo, true, \ duke@435: "special version of string compareTo") \ duke@435: \ duke@435: develop(bool, SpecialStringIndexOf, true, \ duke@435: "special version of string indexOf") \ duke@435: \ duke@435: develop(bool, TraceCallFixup, false, \ duke@435: "traces all call fixups") \ duke@435: \ duke@435: develop(bool, DeoptimizeALot, false, \ duke@435: "deoptimize at every exit from the runtime system") \ duke@435: \ duke@435: develop(ccstrlist, DeoptimizeOnlyAt, "", \ duke@435: "a comma separated list of bcis to deoptimize at") \ duke@435: \ duke@435: product(bool, DeoptimizeRandom, false, \ duke@435: "deoptimize random frames on random exit from the runtime system")\ duke@435: \ duke@435: notproduct(bool, ZombieALot, false, \ duke@435: "creates zombies (non-entrant) at exit from the runt. system") \ duke@435: \ duke@435: notproduct(bool, WalkStackALot, false, \ duke@435: "trace stack (no print) at every exit from the runtime system") \ duke@435: \ duke@435: develop(bool, Debugging, false, \ duke@435: "set when executing debug methods in debug.ccp " \ duke@435: "(to prevent triggering assertions)") \ duke@435: \ duke@435: notproduct(bool, StrictSafepointChecks, trueInDebug, \ duke@435: "Enable strict checks that safepoints cannot happen for threads " \ duke@435: "that used No_Safepoint_Verifier") \ duke@435: \ duke@435: notproduct(bool, VerifyLastFrame, false, \ duke@435: "Verify oops on last frame on entry to VM") \ duke@435: \ duke@435: develop(bool, TraceHandleAllocation, false, \ duke@435: "Prints out warnings when suspicious many handles are allocated") \ duke@435: \ duke@435: product(bool, UseCompilerSafepoints, true, \ duke@435: "Stop at safepoints in compiled code") \ duke@435: \ duke@435: product(bool, UseSplitVerifier, true, \ duke@435: "use split verifier with StackMapTable attributes") \ duke@435: \ duke@435: product(bool, FailOverToOldVerifier, true, \ duke@435: "fail over to old verifier when split verifier fails") \ duke@435: \ duke@435: develop(bool, ShowSafepointMsgs, false, \ duke@435: "Show msg. about safepoint synch.") \ duke@435: \ duke@435: product(bool, SafepointTimeout, false, \ duke@435: "Time out and warn or fail after SafepointTimeoutDelay " \ duke@435: "milliseconds if failed to reach safepoint") \ duke@435: \ duke@435: develop(bool, DieOnSafepointTimeout, false, \ duke@435: "Die upon failure to reach safepoint (see SafepointTimeout)") \ duke@435: \ duke@435: /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ duke@435: /* typically, at most a few retries are needed */ \ duke@435: product(intx, SuspendRetryCount, 50, \ duke@435: "Maximum retry count for an external suspend request") \ duke@435: \ duke@435: product(intx, SuspendRetryDelay, 5, \ duke@435: "Milliseconds to delay per retry (* current_retry_count)") \ duke@435: \ duke@435: product(bool, AssertOnSuspendWaitFailure, false, \ duke@435: "Assert/Guarantee on external suspend wait failure") \ duke@435: \ duke@435: product(bool, TraceSuspendWaitFailures, false, \ duke@435: "Trace external suspend wait failures") \ duke@435: \ duke@435: product(bool, MaxFDLimit, true, \ duke@435: "Bump the number of file descriptors to max in solaris.") \ duke@435: \ duke@435: notproduct(bool, LogEvents, trueInDebug, \ duke@435: "Enable Event log") \ duke@435: \ duke@435: product(bool, BytecodeVerificationRemote, true, \ duke@435: "Enables the Java bytecode verifier for remote classes") \ duke@435: \ duke@435: product(bool, BytecodeVerificationLocal, false, \ duke@435: "Enables the Java bytecode verifier for local classes") \ duke@435: \ duke@435: develop(bool, ForceFloatExceptions, trueInDebug, \ duke@435: "Force exceptions on FP stack under/overflow") \ duke@435: \ duke@435: develop(bool, SoftMatchFailure, trueInProduct, \ duke@435: "If the DFA fails to match a node, print a message and bail out") \ duke@435: \ duke@435: develop(bool, VerifyStackAtCalls, false, \ duke@435: "Verify that the stack pointer is unchanged after calls") \ duke@435: \ duke@435: develop(bool, TraceJavaAssertions, false, \ duke@435: "Trace java language assertions") \ duke@435: \ duke@435: notproduct(bool, CheckAssertionStatusDirectives, false, \ duke@435: "temporary - see javaClasses.cpp") \ duke@435: \ duke@435: notproduct(bool, PrintMallocFree, false, \ duke@435: "Trace calls to C heap malloc/free allocation") \ duke@435: \ duke@435: notproduct(bool, PrintOopAddress, false, \ duke@435: "Always print the location of the oop") \ duke@435: \ duke@435: notproduct(bool, VerifyCodeCacheOften, false, \ duke@435: "Verify compiled-code cache often") \ duke@435: \ duke@435: develop(bool, ZapDeadCompiledLocals, false, \ duke@435: "Zap dead locals in compiler frames") \ duke@435: \ duke@435: notproduct(bool, ZapDeadLocalsOld, false, \ duke@435: "Zap dead locals (old version, zaps all frames when " \ duke@435: "entering the VM") \ duke@435: \ duke@435: notproduct(bool, CheckOopishValues, false, \ duke@435: "Warn if value contains oop ( requires ZapDeadLocals)") \ duke@435: \ duke@435: develop(bool, UseMallocOnly, false, \ duke@435: "use only malloc/free for allocation (no resource area/arena)") \ duke@435: \ duke@435: develop(bool, PrintMalloc, false, \ duke@435: "print all malloc/free calls") \ duke@435: \ duke@435: develop(bool, ZapResourceArea, trueInDebug, \ duke@435: "Zap freed resource/arena space with 0xABABABAB") \ duke@435: \ duke@435: notproduct(bool, ZapVMHandleArea, trueInDebug, \ duke@435: "Zap freed VM handle space with 0xBCBCBCBC") \ duke@435: \ duke@435: develop(bool, ZapJNIHandleArea, trueInDebug, \ duke@435: "Zap freed JNI handle space with 0xFEFEFEFE") \ duke@435: \ jmasa@450: develop(bool, ZapUnusedHeapArea, false, \ duke@435: "Zap unused heap space with 0xBAADBABE") \ duke@435: \ duke@435: develop(bool, PrintVMMessages, true, \ duke@435: "Print vm messages on console") \ duke@435: \ duke@435: product(bool, PrintGCApplicationConcurrentTime, false, \ duke@435: "Print the time the application has been running") \ duke@435: \ duke@435: product(bool, PrintGCApplicationStoppedTime, false, \ duke@435: "Print the time the application has been stopped") \ duke@435: \ duke@435: develop(bool, Verbose, false, \ duke@435: "Prints additional debugging information from other modes") \ duke@435: \ duke@435: develop(bool, PrintMiscellaneous, false, \ duke@435: "Prints uncategorized debugging information (requires +Verbose)") \ duke@435: \ duke@435: develop(bool, WizardMode, false, \ duke@435: "Prints much more debugging information") \ duke@435: \ duke@435: product(bool, ShowMessageBoxOnError, false, \ duke@435: "Keep process alive on VM fatal error") \ duke@435: \ duke@435: product_pd(bool, UseOSErrorReporting, \ duke@435: "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ duke@435: \ duke@435: product(bool, SuppressFatalErrorMessage, false, \ duke@435: "Do NO Fatal Error report [Avoid deadlock]") \ duke@435: \ duke@435: product(ccstrlist, OnError, "", \ duke@435: "Run user-defined commands on fatal error; see VMError.cpp " \ duke@435: "for examples") \ duke@435: \ duke@435: product(ccstrlist, OnOutOfMemoryError, "", \ duke@435: "Run user-defined commands on first java.lang.OutOfMemoryError") \ duke@435: \ duke@435: manageable(bool, HeapDumpOnOutOfMemoryError, false, \ duke@435: "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ duke@435: \ duke@435: manageable(ccstr, HeapDumpPath, NULL, \ duke@435: "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ duke@435: "directory) of the dump file (defaults to java_pid.hprof" \ duke@435: "in the working directory)") \ duke@435: \ duke@435: develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ duke@435: "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ duke@435: "when the heap usage is larger than this") \ duke@435: \ duke@435: develop(uintx, HeapDumpSegmentSize, 1*G, \ duke@435: "Approximate segment size when generating a segmented heap dump") \ duke@435: \ duke@435: develop(bool, BreakAtWarning, false, \ duke@435: "Execute breakpoint upon encountering VM warning") \ duke@435: \ duke@435: product_pd(bool, UseVectoredExceptions, \ duke@435: "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ duke@435: \ duke@435: develop(bool, TraceVMOperation, false, \ duke@435: "Trace vm operations") \ duke@435: \ duke@435: develop(bool, UseFakeTimers, false, \ duke@435: "Tells whether the VM should use system time or a fake timer") \ duke@435: \ duke@435: diagnostic(bool, LogCompilation, false, \ duke@435: "Log compilation activity in detail to hotspot.log or LogFile") \ duke@435: \ duke@435: product(bool, PrintCompilation, false, \ duke@435: "Print compilations") \ duke@435: \ duke@435: diagnostic(bool, TraceNMethodInstalls, false, \ duke@435: "Trace nmethod intallation") \ duke@435: \ duke@435: diagnostic(bool, TraceOSRBreakpoint, false, \ duke@435: "Trace OSR Breakpoint ") \ duke@435: \ duke@435: diagnostic(bool, TraceCompileTriggered, false, \ duke@435: "Trace compile triggered") \ duke@435: \ duke@435: diagnostic(bool, TraceTriggers, false, \ duke@435: "Trace triggers") \ duke@435: \ duke@435: product(bool, AlwaysRestoreFPU, false, \ duke@435: "Restore the FPU control word after every JNI call (expensive)") \ duke@435: \ duke@435: notproduct(bool, PrintCompilation2, false, \ duke@435: "Print additional statistics per compilation") \ duke@435: \ jrose@535: diagnostic(bool, PrintAdapterHandlers, false, \ duke@435: "Print code generated for i2c/c2i adapters") \ duke@435: \ jrose@535: diagnostic(bool, PrintAssembly, false, \ jrose@535: "Print assembly code (using external disassembler.so)") \ jrose@535: \ jrose@535: diagnostic(ccstr, PrintAssemblyOptions, false, \ jrose@535: "Options string passed to disassembler.so") \ jrose@535: \ jrose@535: diagnostic(bool, PrintNMethods, false, \ duke@435: "Print assembly code for nmethods when generated") \ duke@435: \ jrose@535: diagnostic(bool, PrintNativeNMethods, false, \ duke@435: "Print assembly code for native nmethods when generated") \ duke@435: \ duke@435: develop(bool, PrintDebugInfo, false, \ duke@435: "Print debug information for all nmethods when generated") \ duke@435: \ duke@435: develop(bool, PrintRelocations, false, \ duke@435: "Print relocation information for all nmethods when generated") \ duke@435: \ duke@435: develop(bool, PrintDependencies, false, \ duke@435: "Print dependency information for all nmethods when generated") \ duke@435: \ duke@435: develop(bool, PrintExceptionHandlers, false, \ duke@435: "Print exception handler tables for all nmethods when generated") \ duke@435: \ duke@435: develop(bool, InterceptOSException, false, \ duke@435: "Starts debugger when an implicit OS (e.g., NULL) " \ duke@435: "exception happens") \ duke@435: \ duke@435: notproduct(bool, PrintCodeCache, false, \ duke@435: "Print the compiled_code cache when exiting") \ duke@435: \ duke@435: develop(bool, PrintCodeCache2, false, \ duke@435: "Print detailed info on the compiled_code cache when exiting") \ duke@435: \ jrose@535: diagnostic(bool, PrintStubCode, false, \ duke@435: "Print generated stub code") \ duke@435: \ duke@435: product(bool, StackTraceInThrowable, true, \ duke@435: "Collect backtrace in throwable when exception happens") \ duke@435: \ duke@435: product(bool, OmitStackTraceInFastThrow, true, \ duke@435: "Omit backtraces for some 'hot' exceptions in optimized code") \ duke@435: \ duke@435: product(bool, ProfilerPrintByteCodeStatistics, false, \ duke@435: "Prints byte code statictics when dumping profiler output") \ duke@435: \ duke@435: product(bool, ProfilerRecordPC, false, \ duke@435: "Collects tick for each 16 byte interval of compiled code") \ duke@435: \ duke@435: product(bool, ProfileVM, false, \ duke@435: "Profiles ticks that fall within VM (either in the VM Thread " \ duke@435: "or VM code called through stubs)") \ duke@435: \ duke@435: product(bool, ProfileIntervals, false, \ duke@435: "Prints profiles for each interval (see ProfileIntervalsTicks)") \ duke@435: \ duke@435: notproduct(bool, ProfilerCheckIntervals, false, \ duke@435: "Collect and print info on spacing of profiler ticks") \ duke@435: \ duke@435: develop(bool, PrintJVMWarnings, false, \ duke@435: "Prints warnings for unimplemented JVM functions") \ duke@435: \ duke@435: notproduct(uintx, WarnOnStalledSpinLock, 0, \ duke@435: "Prints warnings for stalled SpinLocks") \ duke@435: \ duke@435: develop(bool, InitializeJavaLangSystem, true, \ duke@435: "Initialize java.lang.System - turn off for individual " \ duke@435: "method debugging") \ duke@435: \ duke@435: develop(bool, InitializeJavaLangString, true, \ duke@435: "Initialize java.lang.String - turn off for individual " \ duke@435: "method debugging") \ duke@435: \ duke@435: develop(bool, InitializeJavaLangExceptionsErrors, true, \ duke@435: "Initialize various error and exception classes - turn off for " \ duke@435: "individual method debugging") \ duke@435: \ duke@435: product(bool, RegisterFinalizersAtInit, true, \ duke@435: "Register finalizable objects at end of Object. or " \ duke@435: "after allocation.") \ duke@435: \ duke@435: develop(bool, RegisterReferences, true, \ duke@435: "Tells whether the VM should register soft/weak/final/phantom " \ duke@435: "references") \ duke@435: \ duke@435: develop(bool, IgnoreRewrites, false, \ duke@435: "Supress rewrites of bytecodes in the oopmap generator. " \ duke@435: "This is unsafe!") \ duke@435: \ duke@435: develop(bool, PrintCodeCacheExtension, false, \ duke@435: "Print extension of code cache") \ duke@435: \ duke@435: develop(bool, UsePrivilegedStack, true, \ duke@435: "Enable the security JVM functions") \ duke@435: \ duke@435: develop(bool, IEEEPrecision, true, \ duke@435: "Enables IEEE precision (for INTEL only)") \ duke@435: \ duke@435: develop(bool, ProtectionDomainVerification, true, \ duke@435: "Verifies protection domain before resolution in system " \ duke@435: "dictionary") \ duke@435: \ duke@435: product(bool, ClassUnloading, true, \ duke@435: "Do unloading of classes") \ duke@435: \ duke@435: develop(bool, DisableStartThread, false, \ duke@435: "Disable starting of additional Java threads " \ duke@435: "(for debugging only)") \ duke@435: \ duke@435: develop(bool, MemProfiling, false, \ duke@435: "Write memory usage profiling to log file") \ duke@435: \ duke@435: notproduct(bool, PrintSystemDictionaryAtExit, false, \ duke@435: "Prints the system dictionary at exit") \ duke@435: \ duke@435: diagnostic(bool, UnsyncloadClass, false, \ duke@435: "Unstable: VM calls loadClass unsynchronized. Custom classloader "\ duke@435: "must call VM synchronized for findClass & defineClass") \ duke@435: \ duke@435: product_pd(bool, DontYieldALot, \ duke@435: "Throw away obvious excess yield calls (for SOLARIS only)") \ duke@435: \ duke@435: product_pd(bool, ConvertSleepToYield, \ duke@435: "Converts sleep(0) to thread yield " \ duke@435: "(may be off for SOLARIS to improve GUI)") \ duke@435: \ duke@435: product(bool, ConvertYieldToSleep, false, \ duke@435: "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ duke@435: "behavior (SOLARIS only)") \ duke@435: \ duke@435: product(bool, UseBoundThreads, true, \ duke@435: "Bind user level threads to kernel threads (for SOLARIS only)") \ duke@435: \ duke@435: develop(bool, UseDetachedThreads, true, \ duke@435: "Use detached threads that are recycled upon termination " \ duke@435: "(for SOLARIS only)") \ duke@435: \ duke@435: product(bool, UseLWPSynchronization, true, \ duke@435: "Use LWP-based instead of libthread-based synchronization " \ duke@435: "(SPARC only)") \ duke@435: \ duke@435: product(ccstr, SyncKnobs, "", \ duke@435: "(Unstable) Various monitor synchronization tunables") \ duke@435: \ duke@435: product(intx, EmitSync, 0, \ duke@435: "(Unsafe,Unstable) " \ duke@435: " Controls emission of inline sync fast-path code") \ duke@435: \ duke@435: product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ duke@435: \ duke@435: product(intx, Atomics, 0, \ duke@435: "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ duke@435: \ duke@435: product(intx, FenceInstruction, 0, \ duke@435: "(Unsafe,Unstable) Experimental") \ duke@435: \ duke@435: product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ duke@435: \ duke@435: product(intx, SyncVerbose, 0, "(Unstable)" ) \ duke@435: \ duke@435: product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ duke@435: \ duke@435: product(intx, hashCode, 0, \ duke@435: "(Unstable) select hashCode generation algorithm" ) \ duke@435: \ duke@435: product(intx, WorkAroundNPTLTimedWaitHang, 1, \ duke@435: "(Unstable, Linux-specific)" \ duke@435: " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ duke@435: \ duke@435: product(bool, FilterSpuriousWakeups , true, \ duke@435: "Prevent spurious or premature wakeups from object.wait" \ duke@435: "(Solaris only)") \ duke@435: \ duke@435: product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ duke@435: product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ duke@435: product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ duke@435: \ duke@435: develop(bool, UsePthreads, false, \ duke@435: "Use pthread-based instead of libthread-based synchronization " \ duke@435: "(SPARC only)") \ duke@435: \ duke@435: product(bool, AdjustConcurrency, false, \ duke@435: "call thr_setconcurrency at thread create time to avoid " \ duke@435: "LWP starvation on MP systems (For Solaris Only)") \ duke@435: \ duke@435: develop(bool, UpdateHotSpotCompilerFileOnError, true, \ duke@435: "Should the system attempt to update the compiler file when " \ duke@435: "an error occurs?") \ duke@435: \ duke@435: product(bool, ReduceSignalUsage, false, \ duke@435: "Reduce the use of OS signals in Java and/or the VM") \ duke@435: \ duke@435: notproduct(bool, ValidateMarkSweep, false, \ duke@435: "Do extra validation during MarkSweep collection") \ duke@435: \ duke@435: notproduct(bool, RecordMarkSweepCompaction, false, \ duke@435: "Enable GC-to-GC recording and querying of compaction during " \ duke@435: "MarkSweep") \ duke@435: \ duke@435: develop_pd(bool, ShareVtableStubs, \ duke@435: "Share vtable stubs (smaller code but worse branch prediction") \ duke@435: \ duke@435: develop(bool, LoadLineNumberTables, true, \ duke@435: "Tells whether the class file parser loads line number tables") \ duke@435: \ duke@435: develop(bool, LoadLocalVariableTables, true, \ duke@435: "Tells whether the class file parser loads local variable tables")\ duke@435: \ duke@435: develop(bool, LoadLocalVariableTypeTables, true, \ duke@435: "Tells whether the class file parser loads local variable type tables")\ duke@435: \ duke@435: product(bool, AllowUserSignalHandlers, false, \ duke@435: "Do not complain if the application installs signal handlers " \ duke@435: "(Solaris & Linux only)") \ duke@435: \ duke@435: product(bool, UseSignalChaining, true, \ duke@435: "Use signal-chaining to invoke signal handlers installed " \ duke@435: "by the application (Solaris & Linux only)") \ duke@435: \ duke@435: product(bool, UseAltSigs, false, \ duke@435: "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ duke@435: "internal signals. (Solaris only)") \ duke@435: \ duke@435: product(bool, UseSpinning, false, \ duke@435: "Use spinning in monitor inflation and before entry") \ duke@435: \ duke@435: product(bool, PreSpinYield, false, \ duke@435: "Yield before inner spinning loop") \ duke@435: \ duke@435: product(bool, PostSpinYield, true, \ duke@435: "Yield after inner spinning loop") \ duke@435: \ duke@435: product(bool, AllowJNIEnvProxy, false, \ duke@435: "Allow JNIEnv proxies for jdbx") \ duke@435: \ duke@435: product(bool, JNIDetachReleasesMonitors, true, \ duke@435: "JNI DetachCurrentThread releases monitors owned by thread") \ duke@435: \ duke@435: product(bool, RestoreMXCSROnJNICalls, false, \ duke@435: "Restore MXCSR when returning from JNI calls") \ duke@435: \ duke@435: product(bool, CheckJNICalls, false, \ duke@435: "Verify all arguments to JNI calls") \ duke@435: \ duke@435: product(bool, UseFastJNIAccessors, true, \ duke@435: "Use optimized versions of GetField") \ duke@435: \ duke@435: product(bool, EagerXrunInit, false, \ duke@435: "Eagerly initialize -Xrun libraries; allows startup profiling, " \ duke@435: " but not all -Xrun libraries may support the state of the VM at this time") \ duke@435: \ duke@435: product(bool, PreserveAllAnnotations, false, \ duke@435: "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ duke@435: \ duke@435: develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ duke@435: "Number of OutOfMemoryErrors preallocated with backtrace") \ duke@435: \ duke@435: product(bool, LazyBootClassLoader, true, \ duke@435: "Enable/disable lazy opening of boot class path entries") \ duke@435: \ duke@435: diagnostic(bool, UseIncDec, true, \ duke@435: "Use INC, DEC instructions on x86") \ duke@435: \ duke@435: product(bool, UseStoreImmI16, true, \ duke@435: "Use store immediate 16-bits value instruction on x86") \ duke@435: \ duke@435: product(bool, UseAddressNop, false, \ duke@435: "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ duke@435: \ duke@435: product(bool, UseXmmLoadAndClearUpper, true, \ duke@435: "Load low part of XMM register and clear upper part") \ duke@435: \ duke@435: product(bool, UseXmmRegToRegMoveAll, false, \ duke@435: "Copy all XMM register bits when moving value between registers") \ duke@435: \ kvn@506: product(bool, UseXmmI2D, false, \ kvn@506: "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ kvn@506: \ kvn@506: product(bool, UseXmmI2F, false, \ kvn@506: "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ kvn@506: \ duke@435: product(intx, FieldsAllocationStyle, 1, \ duke@435: "0 - type based with oops first, 1 - with oops last") \ duke@435: \ duke@435: product(bool, CompactFields, true, \ duke@435: "Allocate nonstatic fields in gaps between previous fields") \ duke@435: \ duke@435: notproduct(bool, PrintCompactFieldsSavings, false, \ duke@435: "Print how many words were saved with CompactFields") \ duke@435: \ duke@435: product(bool, UseBiasedLocking, true, \ duke@435: "Enable biased locking in JVM") \ duke@435: \ duke@435: product(intx, BiasedLockingStartupDelay, 4000, \ duke@435: "Number of milliseconds to wait before enabling biased locking") \ duke@435: \ duke@435: diagnostic(bool, PrintBiasedLockingStatistics, false, \ duke@435: "Print statistics of biased locking in JVM") \ duke@435: \ duke@435: product(intx, BiasedLockingBulkRebiasThreshold, 20, \ duke@435: "Threshold of number of revocations per type to try to " \ duke@435: "rebias all objects in the heap of that type") \ duke@435: \ duke@435: product(intx, BiasedLockingBulkRevokeThreshold, 40, \ duke@435: "Threshold of number of revocations per type to permanently " \ duke@435: "revoke biases of all objects in the heap of that type") \ duke@435: \ duke@435: product(intx, BiasedLockingDecayTime, 25000, \ duke@435: "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ duke@435: "type after previous bulk rebias") \ duke@435: \ duke@435: /* tracing */ \ duke@435: \ duke@435: notproduct(bool, TraceRuntimeCalls, false, \ duke@435: "Trace run-time calls") \ duke@435: \ duke@435: develop(bool, TraceJNICalls, false, \ duke@435: "Trace JNI calls") \ duke@435: \ duke@435: notproduct(bool, TraceJVMCalls, false, \ duke@435: "Trace JVM calls") \ duke@435: \ duke@435: product(ccstr, TraceJVMTI, "", \ duke@435: "Trace flags for JVMTI functions and events") \ duke@435: \ duke@435: /* This option can change an EMCP method into an obsolete method. */ \ duke@435: /* This can affect tests that except specific methods to be EMCP. */ \ duke@435: /* This option should be used with caution. */ \ duke@435: product(bool, StressLdcRewrite, false, \ duke@435: "Force ldc -> ldc_w rewrite during RedefineClasses") \ duke@435: \ duke@435: product(intx, TraceRedefineClasses, 0, \ duke@435: "Trace level for JVMTI RedefineClasses") \ duke@435: \ duke@435: /* change to false by default sometime after Mustang */ \ duke@435: product(bool, VerifyMergedCPBytecodes, true, \ duke@435: "Verify bytecodes after RedefineClasses constant pool merging") \ duke@435: \ duke@435: develop(bool, TraceJNIHandleAllocation, false, \ duke@435: "Trace allocation/deallocation of JNI handle blocks") \ duke@435: \ duke@435: develop(bool, TraceThreadEvents, false, \ duke@435: "Trace all thread events") \ duke@435: \ duke@435: develop(bool, TraceBytecodes, false, \ duke@435: "Trace bytecode execution") \ duke@435: \ duke@435: develop(bool, TraceClassInitialization, false, \ duke@435: "Trace class initialization") \ duke@435: \ duke@435: develop(bool, TraceExceptions, false, \ duke@435: "Trace exceptions") \ duke@435: \ duke@435: develop(bool, TraceICs, false, \ duke@435: "Trace inline cache changes") \ duke@435: \ duke@435: notproduct(bool, TraceInvocationCounterOverflow, false, \ duke@435: "Trace method invocation counter overflow") \ duke@435: \ duke@435: develop(bool, TraceInlineCacheClearing, false, \ duke@435: "Trace clearing of inline caches in nmethods") \ duke@435: \ duke@435: develop(bool, TraceDependencies, false, \ duke@435: "Trace dependencies") \ duke@435: \ duke@435: develop(bool, VerifyDependencies, trueInDebug, \ duke@435: "Exercise and verify the compilation dependency mechanism") \ duke@435: \ duke@435: develop(bool, TraceNewOopMapGeneration, false, \ duke@435: "Trace OopMapGeneration") \ duke@435: \ duke@435: develop(bool, TraceNewOopMapGenerationDetailed, false, \ duke@435: "Trace OopMapGeneration: print detailed cell states") \ duke@435: \ duke@435: develop(bool, TimeOopMap, false, \ duke@435: "Time calls to GenerateOopMap::compute_map() in sum") \ duke@435: \ duke@435: develop(bool, TimeOopMap2, false, \ duke@435: "Time calls to GenerateOopMap::compute_map() individually") \ duke@435: \ duke@435: develop(bool, TraceMonitorMismatch, false, \ duke@435: "Trace monitor matching failures during OopMapGeneration") \ duke@435: \ duke@435: develop(bool, TraceOopMapRewrites, false, \ duke@435: "Trace rewritting of method oops during oop map generation") \ duke@435: \ duke@435: develop(bool, TraceSafepoint, false, \ duke@435: "Trace safepoint operations") \ duke@435: \ duke@435: develop(bool, TraceICBuffer, false, \ duke@435: "Trace usage of IC buffer") \ duke@435: \ duke@435: develop(bool, TraceCompiledIC, false, \ duke@435: "Trace changes of compiled IC") \ duke@435: \ duke@435: notproduct(bool, TraceZapDeadLocals, false, \ duke@435: "Trace zapping dead locals") \ duke@435: \ duke@435: develop(bool, TraceStartupTime, false, \ duke@435: "Trace setup time") \ duke@435: \ duke@435: develop(bool, TraceHPI, false, \ duke@435: "Trace Host Porting Interface (HPI)") \ duke@435: \ duke@435: product(ccstr, HPILibPath, NULL, \ duke@435: "Specify alternate path to HPI library") \ duke@435: \ duke@435: develop(bool, TraceProtectionDomainVerification, false, \ duke@435: "Trace protection domain verifcation") \ duke@435: \ duke@435: develop(bool, TraceClearedExceptions, false, \ duke@435: "Prints when an exception is forcibly cleared") \ duke@435: \ duke@435: product(bool, TraceClassResolution, false, \ duke@435: "Trace all constant pool resolutions (for debugging)") \ duke@435: \ duke@435: product(bool, TraceBiasedLocking, false, \ duke@435: "Trace biased locking in JVM") \ duke@435: \ duke@435: product(bool, TraceMonitorInflation, false, \ duke@435: "Trace monitor inflation in JVM") \ duke@435: \ duke@435: /* assembler */ \ duke@435: product(bool, Use486InstrsOnly, false, \ duke@435: "Use 80486 Compliant instruction subset") \ duke@435: \ duke@435: /* gc */ \ duke@435: \ duke@435: product(bool, UseSerialGC, false, \ duke@435: "Tells whether the VM should use serial garbage collector") \ duke@435: \ duke@435: product(bool, UseParallelGC, false, \ duke@435: "Use the Parallel Scavenge garbage collector") \ duke@435: \ duke@435: product(bool, UseParallelOldGC, false, \ duke@435: "Use the Parallel Old garbage collector") \ duke@435: \ duke@435: product(bool, UseParallelOldGCCompacting, true, \ duke@435: "In the Parallel Old garbage collector use parallel compaction") \ duke@435: \ duke@435: product(bool, UseParallelDensePrefixUpdate, true, \ duke@435: "In the Parallel Old garbage collector use parallel dense" \ duke@435: " prefix update") \ duke@435: \ duke@435: develop(bool, UseParallelOldGCChunkPointerCalc, true, \ duke@435: "In the Parallel Old garbage collector use chucks to calculate" \ duke@435: " new object locations") \ duke@435: \ duke@435: product(uintx, HeapMaximumCompactionInterval, 20, \ duke@435: "How often should we maximally compact the heap (not allowing " \ duke@435: "any dead space)") \ duke@435: \ duke@435: product(uintx, HeapFirstMaximumCompactionCount, 3, \ duke@435: "The collection count for the first maximum compaction") \ duke@435: \ duke@435: product(bool, UseMaximumCompactionOnSystemGC, true, \ duke@435: "In the Parallel Old garbage collector maximum compaction for " \ duke@435: "a system GC") \ duke@435: \ duke@435: product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ duke@435: "The mean used by the par compact dead wood" \ duke@435: "limiter (a number between 0-100).") \ duke@435: \ duke@435: product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ duke@435: "The standard deviation used by the par compact dead wood" \ duke@435: "limiter (a number between 0-100).") \ duke@435: \ duke@435: product(bool, UseParallelOldGCDensePrefix, true, \ duke@435: "Use a dense prefix with the Parallel Old garbage collector") \ duke@435: \ duke@435: product(uintx, ParallelGCThreads, 0, \ duke@435: "Number of parallel threads parallel gc will use") \ duke@435: \ duke@435: product(uintx, ParallelCMSThreads, 0, \ duke@435: "Max number of threads CMS will use for concurrent work") \ duke@435: \ duke@435: develop(bool, VerifyParallelOldWithMarkSweep, false, \ duke@435: "Use the MarkSweep code to verify phases of Parallel Old") \ duke@435: \ duke@435: develop(uintx, VerifyParallelOldWithMarkSweepInterval, 1, \ duke@435: "Interval at which the MarkSweep code is used to verify " \ duke@435: "phases of Parallel Old") \ duke@435: \ duke@435: develop(bool, ParallelOldMTUnsafeMarkBitMap, false, \ duke@435: "Use the Parallel Old MT unsafe in marking the bitmap") \ duke@435: \ duke@435: develop(bool, ParallelOldMTUnsafeUpdateLiveData, false, \ duke@435: "Use the Parallel Old MT unsafe in update of live size") \ duke@435: \ duke@435: develop(bool, TraceChunkTasksQueuing, false, \ duke@435: "Trace the queuing of the chunk tasks") \ duke@435: \ duke@435: product(uintx, YoungPLABSize, 4096, \ duke@435: "Size of young gen promotion labs (in HeapWords)") \ duke@435: \ duke@435: product(uintx, OldPLABSize, 1024, \ duke@435: "Size of old gen promotion labs (in HeapWords)") \ duke@435: \ duke@435: product(uintx, GCTaskTimeStampEntries, 200, \ duke@435: "Number of time stamp entries per gc worker thread") \ duke@435: \ duke@435: product(bool, AlwaysTenure, false, \ duke@435: "Always tenure objects in eden. (ParallelGC only)") \ duke@435: \ duke@435: product(bool, NeverTenure, false, \ duke@435: "Never tenure objects in eden, May tenure on overflow" \ duke@435: " (ParallelGC only)") \ duke@435: \ duke@435: product(bool, ScavengeBeforeFullGC, true, \ duke@435: "Scavenge youngest generation before each full GC," \ duke@435: " used with UseParallelGC") \ duke@435: \ duke@435: develop(bool, ScavengeWithObjectsInToSpace, false, \ duke@435: "Allow scavenges to occur when to_space contains objects.") \ duke@435: \ duke@435: product(bool, UseConcMarkSweepGC, false, \ duke@435: "Use Concurrent Mark-Sweep GC in the old generation") \ duke@435: \ duke@435: product(bool, ExplicitGCInvokesConcurrent, false, \ duke@435: "A System.gc() request invokes a concurrent collection;" \ duke@435: " (effective only when UseConcMarkSweepGC)") \ duke@435: \ duke@435: product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ duke@435: "A System.gc() request invokes a concurrent collection and" \ duke@435: " also unloads classes during such a concurrent gc cycle " \ duke@435: " (effective only when UseConcMarkSweepGC)") \ duke@435: \ duke@435: develop(bool, UseCMSAdaptiveFreeLists, true, \ duke@435: "Use Adaptive Free Lists in the CMS generation") \ duke@435: \ duke@435: develop(bool, UseAsyncConcMarkSweepGC, true, \ duke@435: "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ duke@435: \ duke@435: develop(bool, RotateCMSCollectionTypes, false, \ duke@435: "Rotate the CMS collections among concurrent and STW") \ duke@435: \ duke@435: product(bool, UseCMSBestFit, true, \ duke@435: "Use CMS best fit allocation strategy") \ duke@435: \ duke@435: product(bool, UseCMSCollectionPassing, true, \ duke@435: "Use passing of collection from background to foreground") \ duke@435: \ duke@435: product(bool, UseParNewGC, false, \ duke@435: "Use parallel threads in the new generation.") \ duke@435: \ duke@435: product(bool, ParallelGCVerbose, false, \ duke@435: "Verbose output for parallel GC.") \ duke@435: \ duke@435: product(intx, ParallelGCBufferWastePct, 10, \ duke@435: "wasted fraction of parallel allocation buffer.") \ duke@435: \ duke@435: product(bool, ParallelGCRetainPLAB, true, \ duke@435: "Retain parallel allocation buffers across scavenges.") \ duke@435: \ duke@435: product(intx, TargetPLABWastePct, 10, \ duke@435: "target wasted space in last buffer as pct of overall allocation")\ duke@435: \ duke@435: product(uintx, PLABWeight, 75, \ duke@435: "Percentage (0-100) used to weight the current sample when" \ duke@435: "computing exponentially decaying average for ResizePLAB.") \ duke@435: \ duke@435: product(bool, ResizePLAB, true, \ duke@435: "Dynamically resize (survivor space) promotion labs") \ duke@435: \ duke@435: product(bool, PrintPLAB, false, \ duke@435: "Print (survivor space) promotion labs sizing decisions") \ duke@435: \ duke@435: product(intx, ParGCArrayScanChunk, 50, \ duke@435: "Scan a subset and push remainder, if array is bigger than this") \ duke@435: \ duke@435: product(intx, ParGCDesiredObjsFromOverflowList, 20, \ duke@435: "The desired number of objects to claim from the overflow list") \ duke@435: \ duke@435: product(uintx, CMSParPromoteBlocksToClaim, 50, \ duke@435: "Number of blocks to attempt to claim when refilling CMS LAB for "\ duke@435: "parallel GC.") \ duke@435: \ duke@435: product(bool, AlwaysPreTouch, false, \ duke@435: "It forces all freshly committed pages to be pre-touched.") \ duke@435: \ duke@435: product(bool, CMSUseOldDefaults, false, \ duke@435: "A flag temporarily introduced to allow reverting to some older" \ duke@435: "default settings; older as of 6.0 ") \ duke@435: \ duke@435: product(intx, CMSYoungGenPerWorker, 16*M, \ duke@435: "The amount of young gen chosen by default per GC worker " \ duke@435: "thread available ") \ duke@435: \ duke@435: product(bool, CMSIncrementalMode, false, \ duke@435: "Whether CMS GC should operate in \"incremental\" mode") \ duke@435: \ duke@435: product(uintx, CMSIncrementalDutyCycle, 10, \ duke@435: "CMS incremental mode duty cycle (a percentage, 0-100). If" \ duke@435: "CMSIncrementalPacing is enabled, then this is just the initial" \ duke@435: "value") \ duke@435: \ duke@435: product(bool, CMSIncrementalPacing, true, \ duke@435: "Whether the CMS incremental mode duty cycle should be " \ duke@435: "automatically adjusted") \ duke@435: \ duke@435: product(uintx, CMSIncrementalDutyCycleMin, 0, \ duke@435: "Lower bound on the duty cycle when CMSIncrementalPacing is" \ duke@435: "enabled (a percentage, 0-100).") \ duke@435: \ duke@435: product(uintx, CMSIncrementalSafetyFactor, 10, \ duke@435: "Percentage (0-100) used to add conservatism when computing the" \ duke@435: "duty cycle.") \ duke@435: \ duke@435: product(uintx, CMSIncrementalOffset, 0, \ duke@435: "Percentage (0-100) by which the CMS incremental mode duty cycle" \ duke@435: "is shifted to the right within the period between young GCs") \ duke@435: \ duke@435: product(uintx, CMSExpAvgFactor, 25, \ duke@435: "Percentage (0-100) used to weight the current sample when" \ duke@435: "computing exponential averages for CMS statistics.") \ duke@435: \ duke@435: product(uintx, CMS_FLSWeight, 50, \ duke@435: "Percentage (0-100) used to weight the current sample when" \ duke@435: "computing exponentially decating averages for CMS FLS statistics.") \ duke@435: \ duke@435: product(uintx, CMS_FLSPadding, 2, \ duke@435: "The multiple of deviation from mean to use for buffering" \ duke@435: "against volatility in free list demand.") \ duke@435: \ duke@435: product(uintx, FLSCoalescePolicy, 2, \ duke@435: "CMS: Aggression level for coalescing, increasing from 0 to 4") \ duke@435: \ duke@435: product(uintx, CMS_SweepWeight, 50, \ duke@435: "Percentage (0-100) used to weight the current sample when" \ duke@435: "computing exponentially decaying average for inter-sweep duration.") \ duke@435: \ duke@435: product(uintx, CMS_SweepPadding, 2, \ duke@435: "The multiple of deviation from mean to use for buffering" \ duke@435: "against volatility in inter-sweep duration.") \ duke@435: \ duke@435: product(uintx, CMS_SweepTimerThresholdMillis, 10, \ duke@435: "Skip block flux-rate sampling for an epoch unless inter-sweep " \ duke@435: " duration exceeds this threhold in milliseconds") \ duke@435: \ duke@435: develop(bool, CMSTraceIncrementalMode, false, \ duke@435: "Trace CMS incremental mode") \ duke@435: \ duke@435: develop(bool, CMSTraceIncrementalPacing, false, \ duke@435: "Trace CMS incremental mode pacing computation") \ duke@435: \ duke@435: develop(bool, CMSTraceThreadState, false, \ duke@435: "Trace the CMS thread state (enable the trace_state() method)") \ duke@435: \ duke@435: product(bool, CMSClassUnloadingEnabled, false, \ duke@435: "Whether class unloading enabled when using CMS GC") \ duke@435: \ ysr@529: product(uintx, CMSClassUnloadingMaxInterval, 0, \ ysr@529: "When CMS class unloading is enabled, the maximum CMS cycle count"\ ysr@529: " for which classes may not be unloaded") \ ysr@529: \ duke@435: product(bool, CMSCompactWhenClearAllSoftRefs, true, \ duke@435: "Compact when asked to collect CMS gen with clear_all_soft_refs") \ duke@435: \ duke@435: product(bool, UseCMSCompactAtFullCollection, true, \ duke@435: "Use mark sweep compact at full collections") \ duke@435: \ duke@435: product(uintx, CMSFullGCsBeforeCompaction, 0, \ duke@435: "Number of CMS full collection done before compaction if > 0") \ duke@435: \ duke@435: develop(intx, CMSDictionaryChoice, 0, \ duke@435: "Use BinaryTreeDictionary as default in the CMS generation") \ duke@435: \ duke@435: product(uintx, CMSIndexedFreeListReplenish, 4, \ duke@435: "Replenish and indexed free list with this number of chunks") \ duke@435: \ duke@435: product(bool, CMSLoopWarn, false, \ duke@435: "Warn in case of excessive CMS looping") \ duke@435: \ duke@435: develop(bool, CMSOverflowEarlyRestoration, false, \ duke@435: "Whether preserved marks should be restored early") \ duke@435: \ duke@435: product(uintx, CMSMarkStackSize, 32*K, \ duke@435: "Size of CMS marking stack") \ duke@435: \ duke@435: product(uintx, CMSMarkStackSizeMax, 4*M, \ duke@435: "Max size of CMS marking stack") \ duke@435: \ duke@435: notproduct(bool, CMSMarkStackOverflowALot, false, \ duke@435: "Whether we should simulate frequent marking stack / work queue" \ duke@435: " overflow") \ duke@435: \ duke@435: notproduct(intx, CMSMarkStackOverflowInterval, 1000, \ duke@435: "A per-thread `interval' counter that determines how frequently" \ duke@435: " we simulate overflow; a smaller number increases frequency") \ duke@435: \ duke@435: product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ duke@435: "(Temporary, subject to experimentation)" \ duke@435: "Maximum number of abortable preclean iterations, if > 0") \ duke@435: \ duke@435: product(intx, CMSMaxAbortablePrecleanTime, 5000, \ duke@435: "(Temporary, subject to experimentation)" \ duke@435: "Maximum time in abortable preclean in ms") \ duke@435: \ duke@435: product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ duke@435: "(Temporary, subject to experimentation)" \ duke@435: "Nominal minimum work per abortable preclean iteration") \ duke@435: \ duke@435: product(intx, CMSAbortablePrecleanWaitMillis, 100, \ duke@435: "(Temporary, subject to experimentation)" \ duke@435: " Time that we sleep between iterations when not given" \ duke@435: " enough work per iteration") \ duke@435: \ duke@435: product(uintx, CMSRescanMultiple, 32, \ duke@435: "Size (in cards) of CMS parallel rescan task") \ duke@435: \ duke@435: product(uintx, CMSConcMarkMultiple, 32, \ duke@435: "Size (in cards) of CMS concurrent MT marking task") \ duke@435: \ duke@435: product(uintx, CMSRevisitStackSize, 1*M, \ duke@435: "Size of CMS KlassKlass revisit stack") \ duke@435: \ duke@435: product(bool, CMSAbortSemantics, false, \ duke@435: "Whether abort-on-overflow semantics is implemented") \ duke@435: \ duke@435: product(bool, CMSParallelRemarkEnabled, true, \ duke@435: "Whether parallel remark enabled (only if ParNewGC)") \ duke@435: \ duke@435: product(bool, CMSParallelSurvivorRemarkEnabled, true, \ duke@435: "Whether parallel remark of survivor space" \ duke@435: " enabled (effective only if CMSParallelRemarkEnabled)") \ duke@435: \ duke@435: product(bool, CMSPLABRecordAlways, true, \ duke@435: "Whether to always record survivor space PLAB bdries" \ duke@435: " (effective only if CMSParallelSurvivorRemarkEnabled)") \ duke@435: \ duke@435: product(bool, CMSConcurrentMTEnabled, true, \ duke@435: "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ duke@435: \ duke@435: product(bool, CMSPermGenPrecleaningEnabled, true, \ duke@435: "Whether concurrent precleaning enabled in perm gen" \ duke@435: " (effective only when CMSPrecleaningEnabled is true)") \ duke@435: \ duke@435: product(bool, CMSPrecleaningEnabled, true, \ duke@435: "Whether concurrent precleaning enabled") \ duke@435: \ duke@435: product(uintx, CMSPrecleanIter, 3, \ duke@435: "Maximum number of precleaning iteration passes") \ duke@435: \ duke@435: product(uintx, CMSPrecleanNumerator, 2, \ duke@435: "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ duke@435: " ratio") \ duke@435: \ duke@435: product(uintx, CMSPrecleanDenominator, 3, \ duke@435: "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ duke@435: " ratio") \ duke@435: \ duke@435: product(bool, CMSPrecleanRefLists1, true, \ duke@435: "Preclean ref lists during (initial) preclean phase") \ duke@435: \ duke@435: product(bool, CMSPrecleanRefLists2, false, \ duke@435: "Preclean ref lists during abortable preclean phase") \ duke@435: \ duke@435: product(bool, CMSPrecleanSurvivors1, false, \ duke@435: "Preclean survivors during (initial) preclean phase") \ duke@435: \ duke@435: product(bool, CMSPrecleanSurvivors2, true, \ duke@435: "Preclean survivors during abortable preclean phase") \ duke@435: \ duke@435: product(uintx, CMSPrecleanThreshold, 1000, \ duke@435: "Don't re-iterate if #dirty cards less than this") \ duke@435: \ duke@435: product(bool, CMSCleanOnEnter, true, \ duke@435: "Clean-on-enter optimization for reducing number of dirty cards") \ duke@435: \ duke@435: product(uintx, CMSRemarkVerifyVariant, 1, \ duke@435: "Choose variant (1,2) of verification following remark") \ duke@435: \ duke@435: product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ duke@435: "If Eden used is below this value, don't try to schedule remark") \ duke@435: \ duke@435: product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ duke@435: "The Eden occupancy % at which to try and schedule remark pause") \ duke@435: \ duke@435: product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ duke@435: "Start sampling Eden top at least before yg occupancy reaches" \ duke@435: " 1/ of the size at which we plan to schedule remark") \ duke@435: \ duke@435: product(uintx, CMSSamplingGrain, 16*K, \ duke@435: "The minimum distance between eden samples for CMS (see above)") \ duke@435: \ duke@435: product(bool, CMSScavengeBeforeRemark, false, \ duke@435: "Attempt scavenge before the CMS remark step") \ duke@435: \ duke@435: develop(bool, CMSTraceSweeper, false, \ duke@435: "Trace some actions of the CMS sweeper") \ duke@435: \ duke@435: product(uintx, CMSWorkQueueDrainThreshold, 10, \ duke@435: "Don't drain below this size per parallel worker/thief") \ duke@435: \ duke@435: product(intx, CMSWaitDuration, 2000, \ duke@435: "Time in milliseconds that CMS thread waits for young GC") \ duke@435: \ duke@435: product(bool, CMSYield, true, \ duke@435: "Yield between steps of concurrent mark & sweep") \ duke@435: \ duke@435: product(uintx, CMSBitMapYieldQuantum, 10*M, \ duke@435: "Bitmap operations should process at most this many bits" \ duke@435: "between yields") \ duke@435: \ duke@435: diagnostic(bool, FLSVerifyAllHeapReferences, false, \ duke@435: "Verify that all refs across the FLS boundary " \ duke@435: " are to valid objects") \ duke@435: \ duke@435: diagnostic(bool, FLSVerifyLists, false, \ duke@435: "Do lots of (expensive) FreeListSpace verification") \ duke@435: \ duke@435: diagnostic(bool, FLSVerifyIndexTable, false, \ duke@435: "Do lots of (expensive) FLS index table verification") \ duke@435: \ duke@435: develop(bool, FLSVerifyDictionary, false, \ duke@435: "Do lots of (expensive) FLS dictionary verification") \ duke@435: \ duke@435: develop(bool, VerifyBlockOffsetArray, false, \ duke@435: "Do (expensive!) block offset array verification") \ duke@435: \ duke@435: product(bool, BlockOffsetArrayUseUnallocatedBlock, trueInDebug, \ duke@435: "Maintain _unallocated_block in BlockOffsetArray" \ duke@435: " (currently applicable only to CMS collector)") \ duke@435: \ duke@435: develop(bool, TraceCMSState, false, \ duke@435: "Trace the state of the CMS collection") \ duke@435: \ duke@435: product(intx, RefDiscoveryPolicy, 0, \ duke@435: "Whether reference-based(0) or referent-based(1)") \ duke@435: \ duke@435: product(bool, ParallelRefProcEnabled, false, \ duke@435: "Enable parallel reference processing whenever possible") \ duke@435: \ duke@435: product(bool, ParallelRefProcBalancingEnabled, true, \ duke@435: "Enable balancing of reference processing queues") \ duke@435: \ duke@435: product(intx, CMSTriggerRatio, 80, \ duke@435: "Percentage of MinHeapFreeRatio in CMS generation that is " \ duke@435: " allocated before a CMS collection cycle commences") \ duke@435: \ ysr@529: product(intx, CMSTriggerPermRatio, 80, \ ysr@529: "Percentage of MinHeapFreeRatio in the CMS perm generation that" \ ysr@529: " is allocated before a CMS collection cycle commences, that " \ ysr@529: " also collects the perm generation") \ ysr@529: \ ysr@529: product(uintx, CMSBootstrapOccupancy, 50, \ duke@435: "Percentage CMS generation occupancy at which to " \ duke@435: " initiate CMS collection for bootstrapping collection stats") \ duke@435: \ duke@435: product(intx, CMSInitiatingOccupancyFraction, -1, \ duke@435: "Percentage CMS generation occupancy to start a CMS collection " \ ysr@529: " cycle (A negative value means that CMSTriggerRatio is used)") \ ysr@529: \ ysr@529: product(intx, CMSInitiatingPermOccupancyFraction, -1, \ ysr@529: "Percentage CMS perm generation occupancy to start a CMScollection"\ ysr@529: " cycle (A negative value means that CMSTriggerPermRatio is used)")\ duke@435: \ duke@435: product(bool, UseCMSInitiatingOccupancyOnly, false, \ duke@435: "Only use occupancy as a crierion for starting a CMS collection") \ duke@435: \ ysr@529: product(intx, CMSIsTooFullPercentage, 98, \ ysr@529: "An absolute ceiling above which CMS will always consider the" \ ysr@529: " perm gen ripe for collection") \ ysr@529: \ duke@435: develop(bool, CMSTestInFreeList, false, \ duke@435: "Check if the coalesced range is already in the " \ duke@435: "free lists as claimed.") \ duke@435: \ duke@435: notproduct(bool, CMSVerifyReturnedBytes, false, \ duke@435: "Check that all the garbage collected was returned to the " \ duke@435: "free lists.") \ duke@435: \ duke@435: notproduct(bool, ScavengeALot, false, \ duke@435: "Force scavenge at every Nth exit from the runtime system " \ duke@435: "(N=ScavengeALotInterval)") \ duke@435: \ duke@435: develop(bool, FullGCALot, false, \ duke@435: "Force full gc at every Nth exit from the runtime system " \ duke@435: "(N=FullGCALotInterval)") \ duke@435: \ duke@435: notproduct(bool, GCALotAtAllSafepoints, false, \ duke@435: "Enforce ScavengeALot/GCALot at all potential safepoints") \ duke@435: \ duke@435: product(bool, HandlePromotionFailure, true, \ duke@435: "The youngest generation collection does not require" \ duke@435: " a guarantee of full promotion of all live objects.") \ duke@435: \ duke@435: notproduct(bool, PromotionFailureALot, false, \ duke@435: "Use promotion failure handling on every youngest generation " \ duke@435: "collection") \ duke@435: \ duke@435: develop(uintx, PromotionFailureALotCount, 1000, \ duke@435: "Number of promotion failures occurring at ParGCAllocBuffer" \ duke@435: "refill attempts (ParNew) or promotion attempts " \ duke@435: "(other young collectors) ") \ duke@435: \ duke@435: develop(uintx, PromotionFailureALotInterval, 5, \ duke@435: "Total collections between promotion failures alot") \ duke@435: \ duke@435: develop(intx, WorkStealingSleepMillis, 1, \ duke@435: "Sleep time when sleep is used for yields") \ duke@435: \ duke@435: develop(uintx, WorkStealingYieldsBeforeSleep, 1000, \ duke@435: "Number of yields before a sleep is done during workstealing") \ duke@435: \ duke@435: product(uintx, PreserveMarkStackSize, 40, \ duke@435: "Size for stack used in promotion failure handling") \ duke@435: \ duke@435: product_pd(bool, UseTLAB, "Use thread-local object allocation") \ duke@435: \ duke@435: product_pd(bool, ResizeTLAB, \ duke@435: "Dynamically resize tlab size for threads") \ duke@435: \ duke@435: product(bool, ZeroTLAB, false, \ duke@435: "Zero out the newly created TLAB") \ duke@435: \ duke@435: product(bool, PrintTLAB, false, \ duke@435: "Print various TLAB related information") \ duke@435: \ duke@435: product(bool, TLABStats, true, \ duke@435: "Print various TLAB related information") \ duke@435: \ duke@435: product_pd(bool, NeverActAsServerClassMachine, \ duke@435: "Never act like a server-class machine") \ duke@435: \ duke@435: product(bool, AlwaysActAsServerClassMachine, false, \ duke@435: "Always act like a server-class machine") \ duke@435: \ duke@435: product_pd(uintx, DefaultMaxRAM, \ duke@435: "Maximum real memory size for setting server class heap size") \ duke@435: \ duke@435: product(uintx, DefaultMaxRAMFraction, 4, \ duke@435: "Fraction (1/n) of real memory used for server class max heap") \ duke@435: \ duke@435: product(uintx, DefaultInitialRAMFraction, 64, \ duke@435: "Fraction (1/n) of real memory used for server class initial heap") \ duke@435: \ duke@435: product(bool, UseAutoGCSelectPolicy, false, \ duke@435: "Use automatic collection selection policy") \ duke@435: \ duke@435: product(uintx, AutoGCSelectPauseMillis, 5000, \ duke@435: "Automatic GC selection pause threshhold in ms") \ duke@435: \ duke@435: product(bool, UseAdaptiveSizePolicy, true, \ duke@435: "Use adaptive generation sizing policies") \ duke@435: \ duke@435: product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ duke@435: "Use adaptive survivor sizing policies") \ duke@435: \ duke@435: product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ duke@435: "Use adaptive young-old sizing policies at minor collections") \ duke@435: \ duke@435: product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ duke@435: "Use adaptive young-old sizing policies at major collections") \ duke@435: \ duke@435: product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ duke@435: "Use statistics from System.GC for adaptive size policy") \ duke@435: \ duke@435: product(bool, UseAdaptiveGCBoundary, false, \ duke@435: "Allow young-old boundary to move") \ duke@435: \ duke@435: develop(bool, TraceAdaptiveGCBoundary, false, \ duke@435: "Trace young-old boundary moves") \ duke@435: \ duke@435: develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ duke@435: "Resize the virtual spaces of the young or old generations") \ duke@435: \ duke@435: product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ duke@435: "Policy for changeing generation size for throughput goals") \ duke@435: \ duke@435: product(uintx, AdaptiveSizePausePolicy, 0, \ duke@435: "Policy for changing generation size for pause goals") \ duke@435: \ duke@435: develop(bool, PSAdjustTenuredGenForMinorPause, false, \ duke@435: "Adjust tenured generation to achive a minor pause goal") \ duke@435: \ duke@435: develop(bool, PSAdjustYoungGenForMajorPause, false, \ duke@435: "Adjust young generation to achive a major pause goal") \ duke@435: \ duke@435: product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ duke@435: "Number of steps where heuristics is used before data is used") \ duke@435: \ duke@435: develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ duke@435: "Number of collections before the adaptive sizing is started") \ duke@435: \ duke@435: product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ duke@435: "Collecton interval for printing information, zero => never") \ duke@435: \ duke@435: product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ duke@435: "Use adaptive minimum footprint as a goal") \ duke@435: \ duke@435: product(uintx, AdaptiveSizePolicyWeight, 10, \ duke@435: "Weight given to exponential resizing, between 0 and 100") \ duke@435: \ duke@435: product(uintx, AdaptiveTimeWeight, 25, \ duke@435: "Weight given to time in adaptive policy, between 0 and 100") \ duke@435: \ duke@435: product(uintx, PausePadding, 1, \ duke@435: "How much buffer to keep for pause time") \ duke@435: \ duke@435: product(uintx, PromotedPadding, 3, \ duke@435: "How much buffer to keep for promotion failure") \ duke@435: \ duke@435: product(uintx, SurvivorPadding, 3, \ duke@435: "How much buffer to keep for survivor overflow") \ duke@435: \ duke@435: product(uintx, AdaptivePermSizeWeight, 20, \ duke@435: "Weight for perm gen exponential resizing, between 0 and 100") \ duke@435: \ duke@435: product(uintx, PermGenPadding, 3, \ duke@435: "How much buffer to keep for perm gen sizing") \ duke@435: \ duke@435: product(uintx, ThresholdTolerance, 10, \ duke@435: "Allowed collection cost difference between generations") \ duke@435: \ duke@435: product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ duke@435: "If collection costs are within margin, reduce both by full delta") \ duke@435: \ duke@435: product(uintx, YoungGenerationSizeIncrement, 20, \ duke@435: "Adaptive size percentage change in young generation") \ duke@435: \ duke@435: product(uintx, YoungGenerationSizeSupplement, 80, \ duke@435: "Supplement to YoungedGenerationSizeIncrement used at startup") \ duke@435: \ duke@435: product(uintx, YoungGenerationSizeSupplementDecay, 8, \ duke@435: "Decay factor to YoungedGenerationSizeSupplement") \ duke@435: \ duke@435: product(uintx, TenuredGenerationSizeIncrement, 20, \ duke@435: "Adaptive size percentage change in tenured generation") \ duke@435: \ duke@435: product(uintx, TenuredGenerationSizeSupplement, 80, \ duke@435: "Supplement to TenuredGenerationSizeIncrement used at startup") \ duke@435: \ duke@435: product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ duke@435: "Decay factor to TenuredGenerationSizeIncrement") \ duke@435: \ duke@435: product(uintx, MaxGCPauseMillis, max_uintx, \ duke@435: "Adaptive size policy maximum GC pause time goal in msec") \ duke@435: \ duke@435: product(uintx, MaxGCMinorPauseMillis, max_uintx, \ duke@435: "Adaptive size policy maximum GC minor pause time goal in msec") \ duke@435: \ duke@435: product(uintx, GCTimeRatio, 99, \ duke@435: "Adaptive size policy application time to GC time ratio") \ duke@435: \ duke@435: product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ duke@435: "Adaptive size scale down factor for shrinking") \ duke@435: \ duke@435: product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ duke@435: "Adaptive size decays the major cost for long major intervals") \ duke@435: \ duke@435: product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ duke@435: "Time scale over which major costs decay") \ duke@435: \ duke@435: product(uintx, MinSurvivorRatio, 3, \ duke@435: "Minimum ratio of young generation/survivor space size") \ duke@435: \ duke@435: product(uintx, InitialSurvivorRatio, 8, \ duke@435: "Initial ratio of eden/survivor space size") \ duke@435: \ duke@435: product(uintx, BaseFootPrintEstimate, 256*M, \ duke@435: "Estimate of footprint other than Java Heap") \ duke@435: \ duke@435: product(bool, UseGCOverheadLimit, true, \ duke@435: "Use policy to limit of proportion of time spent in GC " \ duke@435: "before an OutOfMemory error is thrown") \ duke@435: \ duke@435: product(uintx, GCTimeLimit, 98, \ duke@435: "Limit of proportion of time spent in GC before an OutOfMemory" \ duke@435: "error is thrown (used with GCHeapFreeLimit)") \ duke@435: \ duke@435: product(uintx, GCHeapFreeLimit, 2, \ duke@435: "Minimum percentage of free space after a full GC before an " \ duke@435: "OutOfMemoryError is thrown (used with GCTimeLimit)") \ duke@435: \ duke@435: develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ duke@435: "Number of consecutive collections before gc time limit fires") \ duke@435: \ duke@435: product(bool, PrintAdaptiveSizePolicy, false, \ duke@435: "Print information about AdaptiveSizePolicy") \ duke@435: \ duke@435: product(intx, PrefetchCopyIntervalInBytes, -1, \ duke@435: "How far ahead to prefetch destination area (<= 0 means off)") \ duke@435: \ duke@435: product(intx, PrefetchScanIntervalInBytes, -1, \ duke@435: "How far ahead to prefetch scan area (<= 0 means off)") \ duke@435: \ duke@435: product(intx, PrefetchFieldsAhead, -1, \ duke@435: "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ duke@435: \ duke@435: develop(bool, UsePrefetchQueue, true, \ duke@435: "Use the prefetch queue during PS promotion") \ duke@435: \ duke@435: diagnostic(bool, VerifyBeforeExit, trueInDebug, \ duke@435: "Verify system before exiting") \ duke@435: \ duke@435: diagnostic(bool, VerifyBeforeGC, false, \ duke@435: "Verify memory system before GC") \ duke@435: \ duke@435: diagnostic(bool, VerifyAfterGC, false, \ duke@435: "Verify memory system after GC") \ duke@435: \ duke@435: diagnostic(bool, VerifyDuringGC, false, \ duke@435: "Verify memory system during GC (between phases)") \ duke@435: \ duke@435: diagnostic(bool, VerifyRememberedSets, false, \ duke@435: "Verify GC remembered sets") \ duke@435: \ duke@435: diagnostic(bool, VerifyObjectStartArray, true, \ duke@435: "Verify GC object start array if verify before/after") \ duke@435: \ duke@435: product(bool, DisableExplicitGC, false, \ duke@435: "Tells whether calling System.gc() does a full GC") \ duke@435: \ duke@435: notproduct(bool, CheckMemoryInitialization, false, \ duke@435: "Checks memory initialization") \ duke@435: \ duke@435: product(bool, CollectGen0First, false, \ duke@435: "Collect youngest generation before each full GC") \ duke@435: \ duke@435: diagnostic(bool, BindCMSThreadToCPU, false, \ duke@435: "Bind CMS Thread to CPU if possible") \ duke@435: \ duke@435: diagnostic(uintx, CPUForCMSThread, 0, \ duke@435: "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ duke@435: \ duke@435: product(bool, BindGCTaskThreadsToCPUs, false, \ duke@435: "Bind GCTaskThreads to CPUs if possible") \ duke@435: \ duke@435: product(bool, UseGCTaskAffinity, false, \ duke@435: "Use worker affinity when asking for GCTasks") \ duke@435: \ duke@435: product(uintx, ProcessDistributionStride, 4, \ duke@435: "Stride through processors when distributing processes") \ duke@435: \ duke@435: product(uintx, CMSCoordinatorYieldSleepCount, 10, \ duke@435: "number of times the coordinator GC thread will sleep while " \ duke@435: "yielding before giving up and resuming GC") \ duke@435: \ duke@435: product(uintx, CMSYieldSleepCount, 0, \ duke@435: "number of times a GC thread (minus the coordinator) " \ duke@435: "will sleep while yielding before giving up and resuming GC") \ duke@435: \ jmasa@445: notproduct(bool, PrintFlagsFinal, false, \ jmasa@445: "Print all command line flags after argument processing") \ jmasa@445: \ duke@435: /* gc tracing */ \ duke@435: manageable(bool, PrintGC, false, \ duke@435: "Print message at garbage collect") \ duke@435: \ duke@435: manageable(bool, PrintGCDetails, false, \ duke@435: "Print more details at garbage collect") \ duke@435: \ duke@435: manageable(bool, PrintGCDateStamps, false, \ duke@435: "Print date stamps at garbage collect") \ duke@435: \ duke@435: manageable(bool, PrintGCTimeStamps, false, \ duke@435: "Print timestamps at garbage collect") \ duke@435: \ duke@435: product(bool, PrintGCTaskTimeStamps, false, \ duke@435: "Print timestamps for individual gc worker thread tasks") \ duke@435: \ duke@435: develop(intx, ConcGCYieldTimeout, 0, \ duke@435: "If non-zero, assert that GC threads yield within this # of ms.") \ duke@435: \ duke@435: notproduct(bool, TraceMarkSweep, false, \ duke@435: "Trace mark sweep") \ duke@435: \ duke@435: product(bool, PrintReferenceGC, false, \ duke@435: "Print times spent handling reference objects during GC " \ duke@435: " (enabled only when PrintGCDetails)") \ duke@435: \ duke@435: develop(bool, TraceReferenceGC, false, \ duke@435: "Trace handling of soft/weak/final/phantom references") \ duke@435: \ duke@435: develop(bool, TraceFinalizerRegistration, false, \ duke@435: "Trace registration of final references") \ duke@435: \ duke@435: notproduct(bool, TraceScavenge, false, \ duke@435: "Trace scavenge") \ duke@435: \ duke@435: product_rw(bool, TraceClassLoading, false, \ duke@435: "Trace all classes loaded") \ duke@435: \ duke@435: product(bool, TraceClassLoadingPreorder, false, \ duke@435: "Trace all classes loaded in order referenced (not loaded)") \ duke@435: \ duke@435: product_rw(bool, TraceClassUnloading, false, \ duke@435: "Trace unloading of classes") \ duke@435: \ duke@435: product_rw(bool, TraceLoaderConstraints, false, \ duke@435: "Trace loader constraints") \ duke@435: \ duke@435: product(bool, TraceGen0Time, false, \ duke@435: "Trace accumulated time for Gen 0 collection") \ duke@435: \ duke@435: product(bool, TraceGen1Time, false, \ duke@435: "Trace accumulated time for Gen 1 collection") \ duke@435: \ duke@435: product(bool, PrintTenuringDistribution, false, \ duke@435: "Print tenuring age information") \ duke@435: \ duke@435: product_rw(bool, PrintHeapAtGC, false, \ duke@435: "Print heap layout before and after each GC") \ duke@435: \ duke@435: product(bool, PrintHeapAtSIGBREAK, true, \ duke@435: "Print heap layout in response to SIGBREAK") \ duke@435: \ duke@435: manageable(bool, PrintClassHistogram, false, \ duke@435: "Print a histogram of class instances") \ duke@435: \ duke@435: develop(bool, TraceWorkGang, false, \ duke@435: "Trace activities of work gangs") \ duke@435: \ duke@435: product(bool, TraceParallelOldGCTasks, false, \ duke@435: "Trace multithreaded GC activity") \ duke@435: \ duke@435: develop(bool, TraceBlockOffsetTable, false, \ duke@435: "Print BlockOffsetTable maps") \ duke@435: \ duke@435: develop(bool, TraceCardTableModRefBS, false, \ duke@435: "Print CardTableModRefBS maps") \ duke@435: \ duke@435: develop(bool, TraceGCTaskManager, false, \ duke@435: "Trace actions of the GC task manager") \ duke@435: \ duke@435: develop(bool, TraceGCTaskQueue, false, \ duke@435: "Trace actions of the GC task queues") \ duke@435: \ duke@435: develop(bool, TraceGCTaskThread, false, \ duke@435: "Trace actions of the GC task threads") \ duke@435: \ duke@435: product(bool, PrintParallelOldGCPhaseTimes, false, \ duke@435: "Print the time taken by each parallel old gc phase." \ duke@435: "PrintGCDetails must also be enabled.") \ duke@435: \ duke@435: develop(bool, TraceParallelOldGCMarkingPhase, false, \ duke@435: "Trace parallel old gc marking phase") \ duke@435: \ duke@435: develop(bool, TraceParallelOldGCSummaryPhase, false, \ duke@435: "Trace parallel old gc summary phase") \ duke@435: \ duke@435: develop(bool, TraceParallelOldGCCompactionPhase, false, \ duke@435: "Trace parallel old gc compaction phase") \ duke@435: \ duke@435: develop(bool, TraceParallelOldGCDensePrefix, false, \ duke@435: "Trace parallel old gc dense prefix computation") \ duke@435: \ duke@435: develop(bool, IgnoreLibthreadGPFault, false, \ duke@435: "Suppress workaround for libthread GP fault") \ duke@435: \ duke@435: /* JVMTI heap profiling */ \ duke@435: \ duke@435: diagnostic(bool, TraceJVMTIObjectTagging, false, \ duke@435: "Trace JVMTI object tagging calls") \ duke@435: \ duke@435: diagnostic(bool, VerifyBeforeIteration, false, \ duke@435: "Verify memory system before JVMTI iteration") \ duke@435: \ duke@435: /* compiler interface */ \ duke@435: \ duke@435: develop(bool, CIPrintCompilerName, false, \ duke@435: "when CIPrint is active, print the name of the active compiler") \ duke@435: \ duke@435: develop(bool, CIPrintCompileQueue, false, \ duke@435: "display the contents of the compile queue whenever a " \ duke@435: "compilation is enqueued") \ duke@435: \ duke@435: develop(bool, CIPrintRequests, false, \ duke@435: "display every request for compilation") \ duke@435: \ duke@435: product(bool, CITime, false, \ duke@435: "collect timing information for compilation") \ duke@435: \ duke@435: develop(bool, CITimeEach, false, \ duke@435: "display timing information after each successful compilation") \ duke@435: \ duke@435: develop(bool, CICountOSR, true, \ duke@435: "use a separate counter when assigning ids to osr compilations") \ duke@435: \ duke@435: develop(bool, CICompileNatives, true, \ duke@435: "compile native methods if supported by the compiler") \ duke@435: \ duke@435: develop_pd(bool, CICompileOSR, \ duke@435: "compile on stack replacement methods if supported by the " \ duke@435: "compiler") \ duke@435: \ duke@435: develop(bool, CIPrintMethodCodes, false, \ duke@435: "print method bytecodes of the compiled code") \ duke@435: \ duke@435: develop(bool, CIPrintTypeFlow, false, \ duke@435: "print the results of ciTypeFlow analysis") \ duke@435: \ duke@435: develop(bool, CITraceTypeFlow, false, \ duke@435: "detailed per-bytecode tracing of ciTypeFlow analysis") \ duke@435: \ duke@435: develop(intx, CICloneLoopTestLimit, 100, \ duke@435: "size limit for blocks heuristically cloned in ciTypeFlow") \ duke@435: \ duke@435: /* temp diagnostics */ \ duke@435: \ duke@435: diagnostic(bool, TraceRedundantCompiles, false, \ duke@435: "Have compile broker print when a request already in the queue is"\ duke@435: " requested again") \ duke@435: \ duke@435: diagnostic(bool, InitialCompileFast, false, \ duke@435: "Initial compile at CompLevel_fast_compile") \ duke@435: \ duke@435: diagnostic(bool, InitialCompileReallyFast, false, \ duke@435: "Initial compile at CompLevel_really_fast_compile (no profile)") \ duke@435: \ duke@435: diagnostic(bool, FullProfileOnReInterpret, true, \ duke@435: "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ duke@435: \ duke@435: /* compiler */ \ duke@435: \ duke@435: product(intx, CICompilerCount, CI_COMPILER_COUNT, \ duke@435: "Number of compiler threads to run") \ duke@435: \ duke@435: product(intx, CompilationPolicyChoice, 0, \ duke@435: "which compilation policy (0/1)") \ duke@435: \ duke@435: develop(bool, UseStackBanging, true, \ duke@435: "use stack banging for stack overflow checks (required for " \ duke@435: "proper StackOverflow handling; disable only to measure cost " \ duke@435: "of stackbanging)") \ duke@435: \ duke@435: develop(bool, Use24BitFPMode, true, \ duke@435: "Set 24-bit FPU mode on a per-compile basis ") \ duke@435: \ duke@435: develop(bool, Use24BitFP, true, \ duke@435: "use FP instructions that produce 24-bit precise results") \ duke@435: \ duke@435: develop(bool, UseStrictFP, true, \ duke@435: "use strict fp if modifier strictfp is set") \ duke@435: \ duke@435: develop(bool, GenerateSynchronizationCode, true, \ duke@435: "generate locking/unlocking code for synchronized methods and " \ duke@435: "monitors") \ duke@435: \ duke@435: develop(bool, GenerateCompilerNullChecks, true, \ duke@435: "Generate explicit null checks for loads/stores/calls") \ duke@435: \ duke@435: develop(bool, GenerateRangeChecks, true, \ duke@435: "Generate range checks for array accesses") \ duke@435: \ duke@435: develop_pd(bool, ImplicitNullChecks, \ duke@435: "generate code for implicit null checks") \ duke@435: \ duke@435: product(bool, PrintSafepointStatistics, false, \ duke@435: "print statistics about safepoint synchronization") \ duke@435: \ duke@435: product(intx, PrintSafepointStatisticsCount, 300, \ duke@435: "total number of safepoint statistics collected " \ duke@435: "before printing them out") \ duke@435: \ duke@435: product(intx, PrintSafepointStatisticsTimeout, -1, \ duke@435: "print safepoint statistics only when safepoint takes" \ duke@435: " more than PrintSafepointSatisticsTimeout in millis") \ duke@435: \ duke@435: develop(bool, InlineAccessors, true, \ duke@435: "inline accessor methods (get/set)") \ duke@435: \ duke@435: product(bool, Inline, true, \ duke@435: "enable inlining") \ duke@435: \ duke@435: product(bool, ClipInlining, true, \ duke@435: "clip inlining if aggregate method exceeds DesiredMethodLimit") \ duke@435: \ duke@435: develop(bool, UseCHA, true, \ duke@435: "enable CHA") \ duke@435: \ duke@435: product(bool, UseTypeProfile, true, \ duke@435: "Check interpreter profile for historically monomorphic calls") \ duke@435: \ duke@435: product(intx, TypeProfileMajorReceiverPercent, 90, \ duke@435: "% of major receiver type to all profiled receivers") \ duke@435: \ duke@435: notproduct(bool, TimeCompiler, false, \ duke@435: "time the compiler") \ duke@435: \ duke@435: notproduct(bool, TimeCompiler2, false, \ duke@435: "detailed time the compiler (requires +TimeCompiler)") \ duke@435: \ duke@435: diagnostic(bool, PrintInlining, false, \ duke@435: "prints inlining optimizations") \ duke@435: \ duke@435: diagnostic(bool, PrintIntrinsics, false, \ duke@435: "prints attempted and successful inlining of intrinsics") \ duke@435: \ duke@435: diagnostic(ccstrlist, DisableIntrinsic, "", \ duke@435: "do not expand intrinsics whose (internal) names appear here") \ duke@435: \ duke@435: develop(bool, StressReflectiveCode, false, \ duke@435: "Use inexact types at allocations, etc., to test reflection") \ duke@435: \ duke@435: develop(bool, EagerInitialization, false, \ duke@435: "Eagerly initialize classes if possible") \ duke@435: \ duke@435: product(bool, Tier1UpdateMethodData, trueInTiered, \ duke@435: "Update methodDataOops in Tier1-generated code") \ duke@435: \ duke@435: develop(bool, TraceMethodReplacement, false, \ duke@435: "Print when methods are replaced do to recompilation") \ duke@435: \ duke@435: develop(bool, PrintMethodFlushing, false, \ duke@435: "print the nmethods being flushed") \ duke@435: \ duke@435: notproduct(bool, LogMultipleMutexLocking, false, \ duke@435: "log locking and unlocking of mutexes (only if multiple locks " \ duke@435: "are held)") \ duke@435: \ duke@435: develop(bool, UseRelocIndex, false, \ duke@435: "use an index to speed random access to relocations") \ duke@435: \ duke@435: develop(bool, StressCodeBuffers, false, \ duke@435: "Exercise code buffer expansion and other rare state changes") \ duke@435: \ duke@435: diagnostic(bool, DebugNonSafepoints, trueInDebug, \ duke@435: "Generate extra debugging info for non-safepoints in nmethods") \ duke@435: \ duke@435: diagnostic(bool, DebugInlinedCalls, true, \ duke@435: "If false, restricts profiled locations to the root method only") \ duke@435: \ duke@435: product(bool, PrintVMOptions, trueInDebug, \ duke@435: "print VM flag settings") \ duke@435: \ duke@435: diagnostic(bool, SerializeVMOutput, true, \ duke@435: "Use a mutex to serialize output to tty and hotspot.log") \ duke@435: \ duke@435: diagnostic(bool, DisplayVMOutput, true, \ duke@435: "Display all VM output on the tty, independently of LogVMOutput") \ duke@435: \ duke@435: diagnostic(bool, LogVMOutput, trueInDebug, \ duke@435: "Save VM output to hotspot.log, or to LogFile") \ duke@435: \ duke@435: diagnostic(ccstr, LogFile, NULL, \ duke@435: "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ duke@435: \ duke@435: product(ccstr, ErrorFile, NULL, \ duke@435: "If an error occurs, save the error data to this file " \ duke@435: "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ duke@435: \ duke@435: product(bool, DisplayVMOutputToStderr, false, \ duke@435: "If DisplayVMOutput is true, display all VM output to stderr") \ duke@435: \ duke@435: product(bool, DisplayVMOutputToStdout, false, \ duke@435: "If DisplayVMOutput is true, display all VM output to stdout") \ duke@435: \ duke@435: product(bool, UseHeavyMonitors, false, \ duke@435: "use heavyweight instead of lightweight Java monitors") \ duke@435: \ duke@435: notproduct(bool, PrintSymbolTableSizeHistogram, false, \ duke@435: "print histogram of the symbol table") \ duke@435: \ duke@435: notproduct(bool, ExitVMOnVerifyError, false, \ duke@435: "standard exit from VM if bytecode verify error " \ duke@435: "(only in debug mode)") \ duke@435: \ duke@435: notproduct(ccstr, AbortVMOnException, NULL, \ duke@435: "Call fatal if this exception is thrown. Example: " \ duke@435: "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ duke@435: \ duke@435: develop(bool, DebugVtables, false, \ duke@435: "add debugging code to vtable dispatch") \ duke@435: \ duke@435: develop(bool, PrintVtables, false, \ duke@435: "print vtables when printing klass") \ duke@435: \ duke@435: notproduct(bool, PrintVtableStats, false, \ duke@435: "print vtables stats at end of run") \ duke@435: \ duke@435: develop(bool, TraceCreateZombies, false, \ duke@435: "trace creation of zombie nmethods") \ duke@435: \ duke@435: notproduct(bool, IgnoreLockingAssertions, false, \ duke@435: "disable locking assertions (for speed)") \ duke@435: \ duke@435: notproduct(bool, VerifyLoopOptimizations, false, \ duke@435: "verify major loop optimizations") \ duke@435: \ duke@435: product(bool, RangeCheckElimination, true, \ duke@435: "Split loop iterations to eliminate range checks") \ duke@435: \ duke@435: develop_pd(bool, UncommonNullCast, \ duke@435: "track occurrences of null in casts; adjust compiler tactics") \ duke@435: \ duke@435: develop(bool, TypeProfileCasts, true, \ duke@435: "treat casts like calls for purposes of type profiling") \ duke@435: \ duke@435: develop(bool, MonomorphicArrayCheck, true, \ duke@435: "Uncommon-trap array store checks that require full type check") \ duke@435: \ duke@435: develop(bool, DelayCompilationDuringStartup, true, \ duke@435: "Delay invoking the compiler until main application class is " \ duke@435: "loaded") \ duke@435: \ duke@435: develop(bool, CompileTheWorld, false, \ duke@435: "Compile all methods in all classes in bootstrap class path " \ duke@435: "(stress test)") \ duke@435: \ duke@435: develop(bool, CompileTheWorldPreloadClasses, true, \ duke@435: "Preload all classes used by a class before start loading") \ duke@435: \ duke@435: notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \ duke@435: "Compile all methods although class initializer failed") \ duke@435: \ duke@435: develop(bool, TraceIterativeGVN, false, \ duke@435: "Print progress during Iterative Global Value Numbering") \ duke@435: \ duke@435: develop(bool, FillDelaySlots, true, \ duke@435: "Fill delay slots (on SPARC only)") \ duke@435: \ duke@435: develop(bool, VerifyIterativeGVN, false, \ duke@435: "Verify Def-Use modifications during sparse Iterative Global " \ duke@435: "Value Numbering") \ duke@435: \ duke@435: notproduct(bool, TracePhaseCCP, false, \ duke@435: "Print progress during Conditional Constant Propagation") \ duke@435: \ duke@435: develop(bool, TimeLivenessAnalysis, false, \ duke@435: "Time computation of bytecode liveness analysis") \ duke@435: \ duke@435: develop(bool, TraceLivenessGen, false, \ duke@435: "Trace the generation of liveness analysis information") \ duke@435: \ duke@435: notproduct(bool, TraceLivenessQuery, false, \ duke@435: "Trace queries of liveness analysis information") \ duke@435: \ duke@435: notproduct(bool, CollectIndexSetStatistics, false, \ duke@435: "Collect information about IndexSets") \ duke@435: \ duke@435: develop(bool, PrintDominators, false, \ duke@435: "Print out dominator trees for GVN") \ duke@435: \ duke@435: develop(bool, UseLoopSafepoints, true, \ duke@435: "Generate Safepoint nodes in every loop") \ duke@435: \ duke@435: notproduct(bool, TraceCISCSpill, false, \ duke@435: "Trace allocators use of cisc spillable instructions") \ duke@435: \ duke@435: notproduct(bool, TraceSpilling, false, \ duke@435: "Trace spilling") \ duke@435: \ duke@435: develop(bool, DeutschShiffmanExceptions, true, \ duke@435: "Fast check to find exception handler for precisely typed " \ duke@435: "exceptions") \ duke@435: \ duke@435: product(bool, SplitIfBlocks, true, \ duke@435: "Clone compares and control flow through merge points to fold " \ duke@435: "some branches") \ duke@435: \ duke@435: develop(intx, FastAllocateSizeLimit, 128*K, \ duke@435: /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ duke@435: "Inline allocations larger than this in doublewords must go slow")\ duke@435: \ duke@435: product(bool, AggressiveOpts, false, \ duke@435: "Enable aggressive optimizations - see arguments.cpp") \ duke@435: \ duke@435: /* statistics */ \ duke@435: develop(bool, UseVTune, false, \ duke@435: "enable support for Intel's VTune profiler") \ duke@435: \ duke@435: develop(bool, CountCompiledCalls, false, \ duke@435: "counts method invocations") \ duke@435: \ duke@435: notproduct(bool, CountRuntimeCalls, false, \ duke@435: "counts VM runtime calls") \ duke@435: \ duke@435: develop(bool, CountJNICalls, false, \ duke@435: "counts jni method invocations") \ duke@435: \ duke@435: notproduct(bool, CountJVMCalls, false, \ duke@435: "counts jvm method invocations") \ duke@435: \ duke@435: notproduct(bool, CountRemovableExceptions, false, \ duke@435: "count exceptions that could be replaced by branches due to " \ duke@435: "inlining") \ duke@435: \ duke@435: notproduct(bool, ICMissHistogram, false, \ duke@435: "produce histogram of IC misses") \ duke@435: \ duke@435: notproduct(bool, PrintClassStatistics, false, \ duke@435: "prints class statistics at end of run") \ duke@435: \ duke@435: notproduct(bool, PrintMethodStatistics, false, \ duke@435: "prints method statistics at end of run") \ duke@435: \ duke@435: /* interpreter */ \ duke@435: develop(bool, ClearInterpreterLocals, false, \ duke@435: "Always clear local variables of interpreter activations upon " \ duke@435: "entry") \ duke@435: \ duke@435: product_pd(bool, RewriteBytecodes, \ duke@435: "Allow rewriting of bytecodes (bytecodes are not immutable)") \ duke@435: \ duke@435: product_pd(bool, RewriteFrequentPairs, \ duke@435: "Rewrite frequently used bytecode pairs into a single bytecode") \ duke@435: \ jrose@535: diagnostic(bool, PrintInterpreter, false, \ duke@435: "Prints the generated interpreter code") \ duke@435: \ duke@435: product(bool, UseInterpreter, true, \ duke@435: "Use interpreter for non-compiled methods") \ duke@435: \ duke@435: develop(bool, UseFastSignatureHandlers, true, \ duke@435: "Use fast signature handlers for native calls") \ duke@435: \ duke@435: develop(bool, UseV8InstrsOnly, false, \ duke@435: "Use SPARC-V8 Compliant instruction subset") \ duke@435: \ duke@435: product(bool, UseNiagaraInstrs, false, \ duke@435: "Use Niagara-efficient instruction subset") \ duke@435: \ duke@435: develop(bool, UseCASForSwap, false, \ duke@435: "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ duke@435: \ duke@435: product(bool, UseLoopCounter, true, \ duke@435: "Increment invocation counter on backward branch") \ duke@435: \ duke@435: product(bool, UseFastEmptyMethods, true, \ duke@435: "Use fast method entry code for empty methods") \ duke@435: \ duke@435: product(bool, UseFastAccessorMethods, true, \ duke@435: "Use fast method entry code for accessor methods") \ duke@435: \ duke@435: product_pd(bool, UseOnStackReplacement, \ duke@435: "Use on stack replacement, calls runtime if invoc. counter " \ duke@435: "overflows in loop") \ duke@435: \ duke@435: notproduct(bool, TraceOnStackReplacement, false, \ duke@435: "Trace on stack replacement") \ duke@435: \ duke@435: develop(bool, PoisonOSREntry, true, \ duke@435: "Detect abnormal calls to OSR code") \ duke@435: \ duke@435: product_pd(bool, PreferInterpreterNativeStubs, \ duke@435: "Use always interpreter stubs for native methods invoked via " \ duke@435: "interpreter") \ duke@435: \ duke@435: develop(bool, CountBytecodes, false, \ duke@435: "Count number of bytecodes executed") \ duke@435: \ duke@435: develop(bool, PrintBytecodeHistogram, false, \ duke@435: "Print histogram of the executed bytecodes") \ duke@435: \ duke@435: develop(bool, PrintBytecodePairHistogram, false, \ duke@435: "Print histogram of the executed bytecode pairs") \ duke@435: \ jrose@535: diagnostic(bool, PrintSignatureHandlers, false, \ duke@435: "Print code generated for native method signature handlers") \ duke@435: \ duke@435: develop(bool, VerifyOops, false, \ duke@435: "Do plausibility checks for oops") \ duke@435: \ duke@435: develop(bool, CheckUnhandledOops, false, \ duke@435: "Check for unhandled oops in VM code") \ duke@435: \ duke@435: develop(bool, VerifyJNIFields, trueInDebug, \ duke@435: "Verify jfieldIDs for instance fields") \ duke@435: \ duke@435: notproduct(bool, VerifyJNIEnvThread, false, \ duke@435: "Verify JNIEnv.thread == Thread::current() when entering VM " \ duke@435: "from JNI") \ duke@435: \ duke@435: develop(bool, VerifyFPU, false, \ duke@435: "Verify FPU state (check for NaN's, etc.)") \ duke@435: \ duke@435: develop(bool, VerifyThread, false, \ duke@435: "Watch the thread register for corruption (SPARC only)") \ duke@435: \ duke@435: develop(bool, VerifyActivationFrameSize, false, \ duke@435: "Verify that activation frame didn't become smaller than its " \ duke@435: "minimal size") \ duke@435: \ duke@435: develop(bool, TraceFrequencyInlining, false, \ duke@435: "Trace frequency based inlining") \ duke@435: \ duke@435: notproduct(bool, TraceTypeProfile, false, \ duke@435: "Trace type profile") \ duke@435: \ duke@435: develop_pd(bool, InlineIntrinsics, \ duke@435: "Inline intrinsics that can be statically resolved") \ duke@435: \ duke@435: product_pd(bool, ProfileInterpreter, \ duke@435: "Profile at the bytecode level during interpretation") \ duke@435: \ duke@435: develop_pd(bool, ProfileTraps, \ duke@435: "Profile deoptimization traps at the bytecode level") \ duke@435: \ duke@435: product(intx, ProfileMaturityPercentage, 20, \ duke@435: "number of method invocations/branches (expressed as % of " \ duke@435: "CompileThreshold) before using the method's profile") \ duke@435: \ duke@435: develop(bool, PrintMethodData, false, \ duke@435: "Print the results of +ProfileInterpreter at end of run") \ duke@435: \ duke@435: develop(bool, VerifyDataPointer, trueInDebug, \ duke@435: "Verify the method data pointer during interpreter profiling") \ duke@435: \ duke@435: develop(bool, VerifyCompiledCode, false, \ duke@435: "Include miscellaneous runtime verifications in nmethod code; " \ duke@435: "off by default because it disturbs nmethod size heuristics.") \ duke@435: \ duke@435: \ duke@435: /* compilation */ \ duke@435: product(bool, UseCompiler, true, \ duke@435: "use compilation") \ duke@435: \ duke@435: develop(bool, TraceCompilationPolicy, false, \ duke@435: "Trace compilation policy") \ duke@435: \ duke@435: develop(bool, TimeCompilationPolicy, false, \ duke@435: "Time the compilation policy") \ duke@435: \ duke@435: product(bool, UseCounterDecay, true, \ duke@435: "adjust recompilation counters") \ duke@435: \ duke@435: develop(intx, CounterHalfLifeTime, 30, \ duke@435: "half-life time of invocation counters (in secs)") \ duke@435: \ duke@435: develop(intx, CounterDecayMinIntervalLength, 500, \ duke@435: "Min. ms. between invocation of CounterDecay") \ duke@435: \ duke@435: product(bool, AlwaysCompileLoopMethods, false, \ duke@435: "when using recompilation, never interpret methods " \ duke@435: "containing loops") \ duke@435: \ duke@435: product(bool, DontCompileHugeMethods, true, \ duke@435: "don't compile methods > HugeMethodLimit") \ duke@435: \ duke@435: /* Bytecode escape analysis estimation. */ \ duke@435: product(bool, EstimateArgEscape, true, \ duke@435: "Analyze bytecodes to estimate escape state of arguments") \ duke@435: \ duke@435: product(intx, BCEATraceLevel, 0, \ duke@435: "How much tracing to do of bytecode escape analysis estimates") \ duke@435: \ duke@435: product(intx, MaxBCEAEstimateLevel, 5, \ duke@435: "Maximum number of nested calls that are analyzed by BC EA.") \ duke@435: \ duke@435: product(intx, MaxBCEAEstimateSize, 150, \ duke@435: "Maximum bytecode size of a method to be analyzed by BC EA.") \ duke@435: \ duke@435: product(intx, AllocatePrefetchStyle, 1, \ duke@435: "0 = no prefetch, " \ duke@435: "1 = prefetch instructions for each allocation, " \ duke@435: "2 = use TLAB watermark to gate allocation prefetch") \ duke@435: \ duke@435: product(intx, AllocatePrefetchDistance, -1, \ duke@435: "Distance to prefetch ahead of allocation pointer") \ duke@435: \ duke@435: product(intx, AllocatePrefetchLines, 1, \ duke@435: "Number of lines to prefetch ahead of allocation pointer") \ duke@435: \ duke@435: product(intx, AllocatePrefetchStepSize, 16, \ duke@435: "Step size in bytes of sequential prefetch instructions") \ duke@435: \ duke@435: product(intx, AllocatePrefetchInstr, 0, \ duke@435: "Prefetch instruction to prefetch ahead of allocation pointer") \ duke@435: \ duke@435: product(intx, ReadPrefetchInstr, 0, \ duke@435: "Prefetch instruction to prefetch ahead") \ duke@435: \ duke@435: /* deoptimization */ \ duke@435: develop(bool, TraceDeoptimization, false, \ duke@435: "Trace deoptimization") \ duke@435: \ duke@435: develop(bool, DebugDeoptimization, false, \ duke@435: "Tracing various information while debugging deoptimization") \ duke@435: \ duke@435: product(intx, SelfDestructTimer, 0, \ duke@435: "Will cause VM to terminate after a given time (in minutes) " \ duke@435: "(0 means off)") \ duke@435: \ duke@435: product(intx, MaxJavaStackTraceDepth, 1024, \ duke@435: "Max. no. of lines in the stack trace for Java exceptions " \ duke@435: "(0 means all)") \ duke@435: \ duke@435: develop(intx, GuaranteedSafepointInterval, 1000, \ duke@435: "Guarantee a safepoint (at least) every so many milliseconds " \ duke@435: "(0 means none)") \ duke@435: \ duke@435: product(intx, SafepointTimeoutDelay, 10000, \ duke@435: "Delay in milliseconds for option SafepointTimeout") \ duke@435: \ duke@435: product(intx, NmethodSweepFraction, 4, \ duke@435: "Number of invocations of sweeper to cover all nmethods") \ duke@435: \ duke@435: notproduct(intx, MemProfilingInterval, 500, \ duke@435: "Time between each invocation of the MemProfiler") \ duke@435: \ duke@435: develop(intx, MallocCatchPtr, -1, \ duke@435: "Hit breakpoint when mallocing/freeing this pointer") \ duke@435: \ duke@435: notproduct(intx, AssertRepeat, 1, \ duke@435: "number of times to evaluate expression in assert " \ duke@435: "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ duke@435: \ duke@435: notproduct(ccstrlist, SuppressErrorAt, "", \ duke@435: "List of assertions (file:line) to muzzle") \ duke@435: \ duke@435: notproduct(uintx, HandleAllocationLimit, 1024, \ duke@435: "Threshold for HandleMark allocation when +TraceHandleAllocation "\ duke@435: "is used") \ duke@435: \ duke@435: develop(uintx, TotalHandleAllocationLimit, 1024, \ duke@435: "Threshold for total handle allocation when " \ duke@435: "+TraceHandleAllocation is used") \ duke@435: \ duke@435: develop(intx, StackPrintLimit, 100, \ duke@435: "number of stack frames to print in VM-level stack dump") \ duke@435: \ duke@435: notproduct(intx, MaxElementPrintSize, 256, \ duke@435: "maximum number of elements to print") \ duke@435: \ duke@435: notproduct(intx, MaxSubklassPrintSize, 4, \ duke@435: "maximum number of subklasses to print when printing klass") \ duke@435: \ duke@435: develop(intx, MaxInlineLevel, 9, \ duke@435: "maximum number of nested calls that are inlined") \ duke@435: \ duke@435: develop(intx, MaxRecursiveInlineLevel, 1, \ duke@435: "maximum number of nested recursive calls that are inlined") \ duke@435: \ duke@435: develop(intx, InlineSmallCode, 1000, \ duke@435: "Only inline already compiled methods if their code size is " \ duke@435: "less than this") \ duke@435: \ duke@435: product(intx, MaxInlineSize, 35, \ duke@435: "maximum bytecode size of a method to be inlined") \ duke@435: \ duke@435: product_pd(intx, FreqInlineSize, \ duke@435: "maximum bytecode size of a frequent method to be inlined") \ duke@435: \ duke@435: develop(intx, MaxTrivialSize, 6, \ duke@435: "maximum bytecode size of a trivial method to be inlined") \ duke@435: \ duke@435: develop(intx, MinInliningThreshold, 250, \ duke@435: "min. invocation count a method needs to have to be inlined") \ duke@435: \ duke@435: develop(intx, AlignEntryCode, 4, \ duke@435: "aligns entry code to specified value (in bytes)") \ duke@435: \ duke@435: develop(intx, MethodHistogramCutoff, 100, \ duke@435: "cutoff value for method invoc. histogram (+CountCalls)") \ duke@435: \ duke@435: develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ duke@435: "# of interpreted methods to show in profile") \ duke@435: \ duke@435: develop(intx, ProfilerNumberOfCompiledMethods, 25, \ duke@435: "# of compiled methods to show in profile") \ duke@435: \ duke@435: develop(intx, ProfilerNumberOfStubMethods, 25, \ duke@435: "# of stub methods to show in profile") \ duke@435: \ duke@435: develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ duke@435: "# of runtime stub nodes to show in profile") \ duke@435: \ duke@435: product(intx, ProfileIntervalsTicks, 100, \ duke@435: "# of ticks between printing of interval profile " \ duke@435: "(+ProfileIntervals)") \ duke@435: \ duke@435: notproduct(intx, ScavengeALotInterval, 1, \ duke@435: "Interval between which scavenge will occur with +ScavengeALot") \ duke@435: \ duke@435: notproduct(intx, FullGCALotInterval, 1, \ duke@435: "Interval between which full gc will occur with +FullGCALot") \ duke@435: \ duke@435: notproduct(intx, FullGCALotStart, 0, \ duke@435: "For which invocation to start FullGCAlot") \ duke@435: \ duke@435: notproduct(intx, FullGCALotDummies, 32*K, \ duke@435: "Dummy object allocated with +FullGCALot, forcing all objects " \ duke@435: "to move") \ duke@435: \ duke@435: develop(intx, DontYieldALotInterval, 10, \ duke@435: "Interval between which yields will be dropped (milliseconds)") \ duke@435: \ duke@435: develop(intx, MinSleepInterval, 1, \ duke@435: "Minimum sleep() interval (milliseconds) when " \ duke@435: "ConvertSleepToYield is off (used for SOLARIS)") \ duke@435: \ duke@435: product(intx, EventLogLength, 2000, \ duke@435: "maximum nof events in event log") \ duke@435: \ duke@435: develop(intx, ProfilerPCTickThreshold, 15, \ duke@435: "Number of ticks in a PC buckets to be a hotspot") \ duke@435: \ duke@435: notproduct(intx, DeoptimizeALotInterval, 5, \ duke@435: "Number of exits until DeoptimizeALot kicks in") \ duke@435: \ duke@435: notproduct(intx, ZombieALotInterval, 5, \ duke@435: "Number of exits until ZombieALot kicks in") \ duke@435: \ duke@435: develop(bool, StressNonEntrant, false, \ duke@435: "Mark nmethods non-entrant at registration") \ duke@435: \ duke@435: diagnostic(intx, MallocVerifyInterval, 0, \ duke@435: "if non-zero, verify C heap after every N calls to " \ duke@435: "malloc/realloc/free") \ duke@435: \ duke@435: diagnostic(intx, MallocVerifyStart, 0, \ duke@435: "if non-zero, start verifying C heap after Nth call to " \ duke@435: "malloc/realloc/free") \ duke@435: \ duke@435: product(intx, TypeProfileWidth, 2, \ duke@435: "number of receiver types to record in call/cast profile") \ duke@435: \ duke@435: develop(intx, BciProfileWidth, 2, \ duke@435: "number of return bci's to record in ret profile") \ duke@435: \ duke@435: product(intx, PerMethodRecompilationCutoff, 400, \ duke@435: "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ duke@435: \ duke@435: product(intx, PerBytecodeRecompilationCutoff, 100, \ duke@435: "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ duke@435: \ duke@435: product(intx, PerMethodTrapLimit, 100, \ duke@435: "Limit on traps (of one kind) in a method (includes inlines)") \ duke@435: \ duke@435: product(intx, PerBytecodeTrapLimit, 4, \ duke@435: "Limit on traps (of one kind) at a particular BCI") \ duke@435: \ duke@435: develop(intx, FreqCountInvocations, 1, \ duke@435: "Scaling factor for branch frequencies (deprecated)") \ duke@435: \ duke@435: develop(intx, InlineFrequencyRatio, 20, \ duke@435: "Ratio of call site execution to caller method invocation") \ duke@435: \ duke@435: develop_pd(intx, InlineFrequencyCount, \ duke@435: "Count of call site execution necessary to trigger frequent " \ duke@435: "inlining") \ duke@435: \ duke@435: develop(intx, InlineThrowCount, 50, \ duke@435: "Force inlining of interpreted methods that throw this often") \ duke@435: \ duke@435: develop(intx, InlineThrowMaxSize, 200, \ duke@435: "Force inlining of throwing methods smaller than this") \ duke@435: \ duke@435: product(intx, AliasLevel, 3, \ duke@435: "0 for no aliasing, 1 for oop/field/static/array split, " \ duke@435: "2 for class split, 3 for unique instances") \ duke@435: \ duke@435: develop(bool, VerifyAliases, false, \ duke@435: "perform extra checks on the results of alias analysis") \ duke@435: \ duke@435: develop(intx, ProfilerNodeSize, 1024, \ duke@435: "Size in K to allocate for the Profile Nodes of each thread") \ duke@435: \ duke@435: develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ duke@435: "Number of times to spin wait on a v8 atomic operation lock") \ duke@435: \ duke@435: product(intx, ReadSpinIterations, 100, \ duke@435: "Number of read attempts before a yield (spin inner loop)") \ duke@435: \ duke@435: product_pd(intx, PreInflateSpin, \ duke@435: "Number of times to spin wait before inflation") \ duke@435: \ duke@435: product(intx, PreBlockSpin, 10, \ duke@435: "Number of times to spin in an inflated lock before going to " \ duke@435: "an OS lock") \ duke@435: \ duke@435: /* gc parameters */ \ duke@435: product(uintx, MaxHeapSize, ScaleForWordSize(64*M), \ duke@435: "Default maximum size for object heap (in bytes)") \ duke@435: \ duke@435: product_pd(uintx, NewSize, \ duke@435: "Default size of new generation (in bytes)") \ duke@435: \ duke@435: product(uintx, MaxNewSize, max_uintx, \ duke@435: "Maximum size of new generation (in bytes)") \ duke@435: \ duke@435: product(uintx, PretenureSizeThreshold, 0, \ duke@435: "Max size in bytes of objects allocated in DefNew generation") \ duke@435: \ duke@435: product_pd(uintx, TLABSize, \ duke@435: "Default (or starting) size of TLAB (in bytes)") \ duke@435: \ duke@435: product(uintx, MinTLABSize, 2*K, \ duke@435: "Minimum allowed TLAB size (in bytes)") \ duke@435: \ duke@435: product(uintx, TLABAllocationWeight, 35, \ duke@435: "Allocation averaging weight") \ duke@435: \ duke@435: product(uintx, TLABWasteTargetPercent, 1, \ duke@435: "Percentage of Eden that can be wasted") \ duke@435: \ duke@435: product(uintx, TLABRefillWasteFraction, 64, \ duke@435: "Max TLAB waste at a refill (internal fragmentation)") \ duke@435: \ duke@435: product(uintx, TLABWasteIncrement, 4, \ duke@435: "Increment allowed waste at slow allocation") \ duke@435: \ duke@435: product_pd(intx, SurvivorRatio, \ duke@435: "Ratio of eden/survivor space size") \ duke@435: \ duke@435: product_pd(intx, NewRatio, \ duke@435: "Ratio of new/old generation sizes") \ duke@435: \ duke@435: product(uintx, MaxLiveObjectEvacuationRatio, 100, \ duke@435: "Max percent of eden objects that will be live at scavenge") \ duke@435: \ duke@435: product_pd(uintx, NewSizeThreadIncrease, \ duke@435: "Additional size added to desired new generation size per " \ duke@435: "non-daemon thread (in bytes)") \ duke@435: \ duke@435: product(uintx, OldSize, ScaleForWordSize(4096*K), \ duke@435: "Default size of tenured generation (in bytes)") \ duke@435: \ duke@435: product_pd(uintx, PermSize, \ duke@435: "Default size of permanent generation (in bytes)") \ duke@435: \ duke@435: product_pd(uintx, MaxPermSize, \ duke@435: "Maximum size of permanent generation (in bytes)") \ duke@435: \ duke@435: product(uintx, MinHeapFreeRatio, 40, \ duke@435: "Min percentage of heap free after GC to avoid expansion") \ duke@435: \ duke@435: product(uintx, MaxHeapFreeRatio, 70, \ duke@435: "Max percentage of heap free after GC to avoid shrinking") \ duke@435: \ duke@435: product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ duke@435: "Number of milliseconds per MB of free space in the heap") \ duke@435: \ duke@435: product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ duke@435: "Min change in heap space due to GC (in bytes)") \ duke@435: \ duke@435: product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ duke@435: "Min expansion of permanent heap (in bytes)") \ duke@435: \ duke@435: product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ duke@435: "Max expansion of permanent heap without full GC (in bytes)") \ duke@435: \ duke@435: product(intx, QueuedAllocationWarningCount, 0, \ duke@435: "Number of times an allocation that queues behind a GC " \ duke@435: "will retry before printing a warning") \ duke@435: \ duke@435: diagnostic(uintx, VerifyGCStartAt, 0, \ duke@435: "GC invoke count where +VerifyBefore/AfterGC kicks in") \ duke@435: \ duke@435: diagnostic(intx, VerifyGCLevel, 0, \ duke@435: "Generation level at which to start +VerifyBefore/AfterGC") \ duke@435: \ duke@435: develop(uintx, ExitAfterGCNum, 0, \ duke@435: "If non-zero, exit after this GC.") \ duke@435: \ duke@435: product(intx, MaxTenuringThreshold, 15, \ duke@435: "Maximum value for tenuring threshold") \ duke@435: \ duke@435: product(intx, InitialTenuringThreshold, 7, \ duke@435: "Initial value for tenuring threshold") \ duke@435: \ duke@435: product(intx, TargetSurvivorRatio, 50, \ duke@435: "Desired percentage of survivor space used after scavenge") \ duke@435: \ duke@435: product(intx, MarkSweepDeadRatio, 5, \ duke@435: "Percentage (0-100) of the old gen allowed as dead wood." \ duke@435: "Serial mark sweep treats this as both the min and max value." \ duke@435: "CMS uses this value only if it falls back to mark sweep." \ duke@435: "Par compact uses a variable scale based on the density of the" \ duke@435: "generation and treats this as the max value when the heap is" \ duke@435: "either completely full or completely empty. Par compact also" \ duke@435: "has a smaller default value; see arguments.cpp.") \ duke@435: \ duke@435: product(intx, PermMarkSweepDeadRatio, 20, \ duke@435: "Percentage (0-100) of the perm gen allowed as dead wood." \ duke@435: "See MarkSweepDeadRatio for collector-specific comments.") \ duke@435: \ duke@435: product(intx, MarkSweepAlwaysCompactCount, 4, \ duke@435: "How often should we fully compact the heap (ignoring the dead " \ duke@435: "space parameters)") \ duke@435: \ duke@435: product(intx, PrintCMSStatistics, 0, \ duke@435: "Statistics for CMS") \ duke@435: \ duke@435: product(bool, PrintCMSInitiationStatistics, false, \ duke@435: "Statistics for initiating a CMS collection") \ duke@435: \ duke@435: product(intx, PrintFLSStatistics, 0, \ duke@435: "Statistics for CMS' FreeListSpace") \ duke@435: \ duke@435: product(intx, PrintFLSCensus, 0, \ duke@435: "Census for CMS' FreeListSpace") \ duke@435: \ duke@435: develop(uintx, GCExpandToAllocateDelayMillis, 0, \ duke@435: "Delay in ms between expansion and allocation") \ duke@435: \ duke@435: product(intx, DeferThrSuspendLoopCount, 4000, \ duke@435: "(Unstable) Number of times to iterate in safepoint loop " \ duke@435: " before blocking VM threads ") \ duke@435: \ duke@435: product(intx, DeferPollingPageLoopCount, -1, \ duke@435: "(Unsafe,Unstable) Number of iterations in safepoint loop " \ duke@435: "before changing safepoint polling page to RO ") \ duke@435: \ duke@435: product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ duke@435: \ duke@435: product(bool, UseDepthFirstScavengeOrder, true, \ duke@435: "true: the scavenge order will be depth-first, " \ duke@435: "false: the scavenge order will be breadth-first") \ duke@435: \ duke@435: product(bool, PSChunkLargeArrays, true, \ duke@435: "true: process large arrays in chunks") \ duke@435: \ duke@435: product(uintx, GCDrainStackTargetSize, 64, \ duke@435: "how many entries we'll try to leave on the stack during " \ duke@435: "parallel GC") \ duke@435: \ duke@435: /* stack parameters */ \ duke@435: product_pd(intx, StackYellowPages, \ duke@435: "Number of yellow zone (recoverable overflows) pages") \ duke@435: \ duke@435: product_pd(intx, StackRedPages, \ duke@435: "Number of red zone (unrecoverable overflows) pages") \ duke@435: \ duke@435: product_pd(intx, StackShadowPages, \ duke@435: "Number of shadow zone (for overflow checking) pages" \ duke@435: " this should exceed the depth of the VM and native call stack") \ duke@435: \ duke@435: product_pd(intx, ThreadStackSize, \ duke@435: "Thread Stack Size (in Kbytes)") \ duke@435: \ duke@435: product_pd(intx, VMThreadStackSize, \ duke@435: "Non-Java Thread Stack Size (in Kbytes)") \ duke@435: \ duke@435: product_pd(intx, CompilerThreadStackSize, \ duke@435: "Compiler Thread Stack Size (in Kbytes)") \ duke@435: \ duke@435: develop_pd(uintx, JVMInvokeMethodSlack, \ duke@435: "Stack space (bytes) required for JVM_InvokeMethod to complete") \ duke@435: \ duke@435: product(uintx, ThreadSafetyMargin, 50*M, \ duke@435: "Thread safety margin is used on fixed-stack LinuxThreads (on " \ duke@435: "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ duke@435: "disable this feature") \ duke@435: \ duke@435: /* code cache parameters */ \ duke@435: develop(uintx, CodeCacheSegmentSize, 64, \ duke@435: "Code cache segment size (in bytes) - smallest unit of " \ duke@435: "allocation") \ duke@435: \ duke@435: develop_pd(intx, CodeEntryAlignment, \ duke@435: "Code entry alignment for generated code (in bytes)") \ duke@435: \ duke@435: product_pd(uintx, InitialCodeCacheSize, \ duke@435: "Initial code cache size (in bytes)") \ duke@435: \ duke@435: product_pd(uintx, ReservedCodeCacheSize, \ duke@435: "Reserved code cache size (in bytes) - maximum code cache size") \ duke@435: \ duke@435: product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ duke@435: "When less than X space left, we stop compiling.") \ duke@435: \ duke@435: product_pd(uintx, CodeCacheExpansionSize, \ duke@435: "Code cache expansion size (in bytes)") \ duke@435: \ duke@435: develop_pd(uintx, CodeCacheMinBlockLength, \ duke@435: "Minimum number of segments in a code cache block.") \ duke@435: \ duke@435: notproduct(bool, ExitOnFullCodeCache, false, \ duke@435: "Exit the VM if we fill the code cache.") \ duke@435: \ duke@435: /* interpreter debugging */ \ duke@435: develop(intx, BinarySwitchThreshold, 5, \ duke@435: "Minimal number of lookupswitch entries for rewriting to binary " \ duke@435: "switch") \ duke@435: \ duke@435: develop(intx, StopInterpreterAt, 0, \ duke@435: "Stops interpreter execution at specified bytecode number") \ duke@435: \ duke@435: develop(intx, TraceBytecodesAt, 0, \ duke@435: "Traces bytecodes starting with specified bytecode number") \ duke@435: \ duke@435: /* compiler interface */ \ duke@435: develop(intx, CIStart, 0, \ duke@435: "the id of the first compilation to permit") \ duke@435: \ duke@435: develop(intx, CIStop, -1, \ duke@435: "the id of the last compilation to permit") \ duke@435: \ duke@435: develop(intx, CIStartOSR, 0, \ duke@435: "the id of the first osr compilation to permit " \ duke@435: "(CICountOSR must be on)") \ duke@435: \ duke@435: develop(intx, CIStopOSR, -1, \ duke@435: "the id of the last osr compilation to permit " \ duke@435: "(CICountOSR must be on)") \ duke@435: \ duke@435: develop(intx, CIBreakAtOSR, -1, \ duke@435: "id of osr compilation to break at") \ duke@435: \ duke@435: develop(intx, CIBreakAt, -1, \ duke@435: "id of compilation to break at") \ duke@435: \ duke@435: product(ccstrlist, CompileOnly, "", \ duke@435: "List of methods (pkg/class.name) to restrict compilation to") \ duke@435: \ duke@435: product(ccstr, CompileCommandFile, NULL, \ duke@435: "Read compiler commands from this file [.hotspot_compiler]") \ duke@435: \ duke@435: product(ccstrlist, CompileCommand, "", \ duke@435: "Prepend to .hotspot_compiler; e.g. log,java/lang/String.") \ duke@435: \ duke@435: product(bool, CICompilerCountPerCPU, false, \ duke@435: "1 compiler thread for log(N CPUs)") \ duke@435: \ duke@435: develop(intx, CIFireOOMAt, -1, \ duke@435: "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ duke@435: "(non-negative value throws OOM after this many CI accesses " \ duke@435: "in each compile)") \ duke@435: \ duke@435: develop(intx, CIFireOOMAtDelay, -1, \ duke@435: "Wait for this many CI accesses to occur in all compiles before " \ duke@435: "beginning to throw OutOfMemoryErrors in each compile") \ duke@435: \ duke@435: /* Priorities */ \ duke@435: product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ duke@435: \ duke@435: product(intx, ThreadPriorityPolicy, 0, \ duke@435: "0 : Normal. "\ duke@435: " VM chooses priorities that are appropriate for normal "\ duke@435: " applications. On Solaris NORM_PRIORITY and above are mapped "\ duke@435: " to normal native priority. Java priorities below NORM_PRIORITY"\ duke@435: " map to lower native priority values. On Windows applications"\ duke@435: " are allowed to use higher native priorities. However, with "\ duke@435: " ThreadPriorityPolicy=0, VM will not use the highest possible"\ duke@435: " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ duke@435: " interfere with system threads. On Linux thread priorities "\ duke@435: " are ignored because the OS does not support static priority "\ duke@435: " in SCHED_OTHER scheduling class which is the only choice for"\ duke@435: " non-root, non-realtime applications. "\ duke@435: "1 : Aggressive. "\ duke@435: " Java thread priorities map over to the entire range of "\ duke@435: " native thread priorities. Higher Java thread priorities map "\ duke@435: " to higher native thread priorities. This policy should be "\ duke@435: " used with care, as sometimes it can cause performance "\ duke@435: " degradation in the application and/or the entire system. On "\ duke@435: " Linux this policy requires root privilege.") \ duke@435: \ duke@435: product(bool, ThreadPriorityVerbose, false, \ duke@435: "print priority changes") \ duke@435: \ duke@435: product(intx, DefaultThreadPriority, -1, \ duke@435: "what native priority threads run at if not specified elsewhere (-1 means no change)") \ duke@435: \ duke@435: product(intx, CompilerThreadPriority, -1, \ duke@435: "what priority should compiler threads run at (-1 means no change)") \ duke@435: \ duke@435: product(intx, VMThreadPriority, -1, \ duke@435: "what priority should VM threads run at (-1 means no change)") \ duke@435: \ duke@435: product(bool, CompilerThreadHintNoPreempt, true, \ duke@435: "(Solaris only) Give compiler threads an extra quanta") \ duke@435: \ duke@435: product(bool, VMThreadHintNoPreempt, false, \ duke@435: "(Solaris only) Give VM thread an extra quanta") \ duke@435: \ duke@435: product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ duke@435: product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ duke@435: \ duke@435: /* compiler debugging */ \ duke@435: notproduct(intx, CompileTheWorldStartAt, 1, \ duke@435: "First class to consider when using +CompileTheWorld") \ duke@435: \ duke@435: notproduct(intx, CompileTheWorldStopAt, max_jint, \ duke@435: "Last class to consider when using +CompileTheWorld") \ duke@435: \ duke@435: develop(intx, NewCodeParameter, 0, \ duke@435: "Testing Only: Create a dedicated integer parameter before " \ duke@435: "putback") \ duke@435: \ duke@435: /* new oopmap storage allocation */ \ duke@435: develop(intx, MinOopMapAllocation, 8, \ duke@435: "Minimum number of OopMap entries in an OopMapSet") \ duke@435: \ duke@435: /* Background Compilation */ \ duke@435: develop(intx, LongCompileThreshold, 50, \ duke@435: "Used with +TraceLongCompiles") \ duke@435: \ duke@435: product(intx, StarvationMonitorInterval, 200, \ duke@435: "Pause between each check in ms") \ duke@435: \ duke@435: /* recompilation */ \ duke@435: product_pd(intx, CompileThreshold, \ duke@435: "number of interpreted method invocations before (re-)compiling") \ duke@435: \ duke@435: product_pd(intx, BackEdgeThreshold, \ duke@435: "Interpreter Back edge threshold at which an OSR compilation is invoked")\ duke@435: \ duke@435: product(intx, Tier1BytecodeLimit, 10, \ duke@435: "Must have at least this many bytecodes before tier1" \ duke@435: "invocation counters are used") \ duke@435: \ duke@435: product_pd(intx, Tier2CompileThreshold, \ duke@435: "threshold at which a tier 2 compilation is invoked") \ duke@435: \ duke@435: product_pd(intx, Tier2BackEdgeThreshold, \ duke@435: "Back edge threshold at which a tier 2 compilation is invoked") \ duke@435: \ duke@435: product_pd(intx, Tier3CompileThreshold, \ duke@435: "threshold at which a tier 3 compilation is invoked") \ duke@435: \ duke@435: product_pd(intx, Tier3BackEdgeThreshold, \ duke@435: "Back edge threshold at which a tier 3 compilation is invoked") \ duke@435: \ duke@435: product_pd(intx, Tier4CompileThreshold, \ duke@435: "threshold at which a tier 4 compilation is invoked") \ duke@435: \ duke@435: product_pd(intx, Tier4BackEdgeThreshold, \ duke@435: "Back edge threshold at which a tier 4 compilation is invoked") \ duke@435: \ duke@435: product_pd(bool, TieredCompilation, \ duke@435: "Enable two-tier compilation") \ duke@435: \ duke@435: product(bool, StressTieredRuntime, false, \ duke@435: "Alternate client and server compiler on compile requests") \ duke@435: \ duke@435: product_pd(intx, OnStackReplacePercentage, \ duke@435: "NON_TIERED number of method invocations/branches (expressed as %"\ duke@435: "of CompileThreshold) before (re-)compiling OSR code") \ duke@435: \ duke@435: product(intx, InterpreterProfilePercentage, 33, \ duke@435: "NON_TIERED number of method invocations/branches (expressed as %"\ duke@435: "of CompileThreshold) before profiling in the interpreter") \ duke@435: \ duke@435: develop(intx, MaxRecompilationSearchLength, 10, \ duke@435: "max. # frames to inspect searching for recompilee") \ duke@435: \ duke@435: develop(intx, MaxInterpretedSearchLength, 3, \ duke@435: "max. # interp. frames to skip when searching for recompilee") \ duke@435: \ duke@435: develop(intx, DesiredMethodLimit, 8000, \ duke@435: "desired max. method size (in bytecodes) after inlining") \ duke@435: \ duke@435: develop(intx, HugeMethodLimit, 8000, \ duke@435: "don't compile methods larger than this if " \ duke@435: "+DontCompileHugeMethods") \ duke@435: \ duke@435: /* New JDK 1.4 reflection implementation */ \ duke@435: \ duke@435: develop(bool, UseNewReflection, true, \ duke@435: "Temporary flag for transition to reflection based on dynamic " \ duke@435: "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ duke@435: "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ duke@435: "changes were needed") \ duke@435: \ duke@435: develop(bool, VerifyReflectionBytecodes, false, \ duke@435: "Force verification of 1.4 reflection bytecodes. Does not work " \ duke@435: "in situations like that described in 4486457 or for " \ duke@435: "constructors generated for serialization, so can not be enabled "\ duke@435: "in product.") \ duke@435: \ duke@435: product(bool, ReflectionWrapResolutionErrors, true, \ duke@435: "Temporary flag for transition to AbstractMethodError wrapped " \ duke@435: "in InvocationTargetException. See 6531596") \ duke@435: \ duke@435: \ duke@435: develop(intx, FastSuperclassLimit, 8, \ duke@435: "Depth of hardwired instanceof accelerator array") \ duke@435: \ duke@435: /* Properties for Java libraries */ \ duke@435: \ duke@435: product(intx, MaxDirectMemorySize, -1, \ duke@435: "Maximum total size of NIO direct-buffer allocations") \ duke@435: \ duke@435: /* temporary developer defined flags */ \ duke@435: \ duke@435: diagnostic(bool, UseNewCode, false, \ duke@435: "Testing Only: Use the new version while testing") \ duke@435: \ duke@435: diagnostic(bool, UseNewCode2, false, \ duke@435: "Testing Only: Use the new version while testing") \ duke@435: \ duke@435: diagnostic(bool, UseNewCode3, false, \ duke@435: "Testing Only: Use the new version while testing") \ duke@435: \ duke@435: /* flags for performance data collection */ \ duke@435: \ duke@435: product(bool, UsePerfData, true, \ duke@435: "Flag to disable jvmstat instrumentation for performance testing" \ duke@435: "and problem isolation purposes.") \ duke@435: \ duke@435: product(bool, PerfDataSaveToFile, false, \ duke@435: "Save PerfData memory to hsperfdata_ file on exit") \ duke@435: \ duke@435: product(ccstr, PerfDataSaveFile, NULL, \ duke@435: "Save PerfData memory to the specified absolute pathname," \ duke@435: "%p in the file name if present will be replaced by pid") \ duke@435: \ duke@435: product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ duke@435: "Data sampling interval in milliseconds") \ duke@435: \ duke@435: develop(bool, PerfTraceDataCreation, false, \ duke@435: "Trace creation of Performance Data Entries") \ duke@435: \ duke@435: develop(bool, PerfTraceMemOps, false, \ duke@435: "Trace PerfMemory create/attach/detach calls") \ duke@435: \ duke@435: product(bool, PerfDisableSharedMem, false, \ duke@435: "Store performance data in standard memory") \ duke@435: \ duke@435: product(intx, PerfDataMemorySize, 32*K, \ duke@435: "Size of performance data memory region. Will be rounded " \ duke@435: "up to a multiple of the native os page size.") \ duke@435: \ duke@435: product(intx, PerfMaxStringConstLength, 1024, \ duke@435: "Maximum PerfStringConstant string length before truncation") \ duke@435: \ duke@435: product(bool, PerfAllowAtExitRegistration, false, \ duke@435: "Allow registration of atexit() methods") \ duke@435: \ duke@435: product(bool, PerfBypassFileSystemCheck, false, \ duke@435: "Bypass Win32 file system criteria checks (Windows Only)") \ duke@435: \ duke@435: product(intx, UnguardOnExecutionViolation, 0, \ duke@435: "Unguard page and retry on no-execute fault (Win32 only)" \ duke@435: "0=off, 1=conservative, 2=aggressive") \ duke@435: \ duke@435: /* Serviceability Support */ \ duke@435: \ duke@435: product(bool, ManagementServer, false, \ duke@435: "Create JMX Management Server") \ duke@435: \ duke@435: product(bool, DisableAttachMechanism, false, \ duke@435: "Disable mechanism that allows tools to attach to this VM") \ duke@435: \ duke@435: product(bool, StartAttachListener, false, \ duke@435: "Always start Attach Listener at VM startup") \ duke@435: \ duke@435: manageable(bool, PrintConcurrentLocks, false, \ duke@435: "Print java.util.concurrent locks in thread dump") \ duke@435: \ duke@435: /* Shared spaces */ \ duke@435: \ duke@435: product(bool, UseSharedSpaces, true, \ duke@435: "Use shared spaces in the permanent generation") \ duke@435: \ duke@435: product(bool, RequireSharedSpaces, false, \ duke@435: "Require shared spaces in the permanent generation") \ duke@435: \ duke@435: product(bool, ForceSharedSpaces, false, \ duke@435: "Require shared spaces in the permanent generation") \ duke@435: \ duke@435: product(bool, DumpSharedSpaces, false, \ duke@435: "Special mode: JVM reads a class list, loads classes, builds " \ duke@435: "shared spaces, and dumps the shared spaces to a file to be " \ duke@435: "used in future JVM runs.") \ duke@435: \ duke@435: product(bool, PrintSharedSpaces, false, \ duke@435: "Print usage of shared spaces") \ duke@435: \ duke@435: product(uintx, SharedDummyBlockSize, 512*M, \ duke@435: "Size of dummy block used to shift heap addresses (in bytes)") \ duke@435: \ duke@435: product(uintx, SharedReadWriteSize, 12*M, \ duke@435: "Size of read-write space in permanent generation (in bytes)") \ duke@435: \ duke@435: product(uintx, SharedReadOnlySize, 8*M, \ duke@435: "Size of read-only space in permanent generation (in bytes)") \ duke@435: \ duke@435: product(uintx, SharedMiscDataSize, 4*M, \ duke@435: "Size of the shared data area adjacent to the heap (in bytes)") \ duke@435: \ duke@435: product(uintx, SharedMiscCodeSize, 4*M, \ duke@435: "Size of the shared code area adjacent to the heap (in bytes)") \ duke@435: \ duke@435: diagnostic(bool, SharedOptimizeColdStart, true, \ duke@435: "At dump time, order shared objects to achieve better " \ duke@435: "cold startup time.") \ duke@435: \ duke@435: develop(intx, SharedOptimizeColdStartPolicy, 2, \ duke@435: "Reordering policy for SharedOptimizeColdStart " \ duke@435: "0=favor classload-time locality, 1=balanced, " \ duke@435: "2=favor runtime locality") \ duke@435: \ duke@435: diagnostic(bool, SharedSkipVerify, false, \ duke@435: "Skip assert() and verify() which page-in unwanted shared " \ duke@435: "objects. ") \ duke@435: \ duke@435: product(bool, TaggedStackInterpreter, false, \ duke@435: "Insert tags in interpreter execution stack for oopmap generaion")\ duke@435: \ duke@435: diagnostic(bool, PauseAtStartup, false, \ duke@435: "Causes the VM to pause at startup time and wait for the pause " \ duke@435: "file to be removed (default: ./vm.paused.)") \ duke@435: \ duke@435: diagnostic(ccstr, PauseAtStartupFile, NULL, \ duke@435: "The file to create and for whose removal to await when pausing " \ duke@435: "at startup. (default: ./vm.paused.)") \ duke@435: \ duke@435: product(bool, ExtendedDTraceProbes, false, \ duke@435: "Enable performance-impacting dtrace probes") \ duke@435: \ duke@435: product(bool, DTraceMethodProbes, false, \ duke@435: "Enable dtrace probes for method-entry and method-exit") \ duke@435: \ duke@435: product(bool, DTraceAllocProbes, false, \ duke@435: "Enable dtrace probes for object allocation") \ duke@435: \ duke@435: product(bool, DTraceMonitorProbes, false, \ duke@435: "Enable dtrace probes for monitor events") \ duke@435: \ duke@435: product(bool, RelaxAccessControlCheck, false, \ duke@435: "Relax the access control checks in the verifier") \ duke@435: \ duke@435: product(bool, UseVMInterruptibleIO, true, \ duke@435: "(Unstable, Solaris-specific) Thread interrupt before or with " \ duke@435: "EINTR for I/O operations results in OS_INTRPT") duke@435: duke@435: duke@435: /* duke@435: * Macros for factoring of globals duke@435: */ duke@435: duke@435: // Interface macros duke@435: #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; duke@435: #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; duke@435: #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; duke@435: #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; duke@435: #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; duke@435: #ifdef PRODUCT duke@435: #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; duke@435: #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; duke@435: #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) duke@435: #else duke@435: #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; duke@435: #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; duke@435: #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; duke@435: #endif duke@435: duke@435: // Implementation macros duke@435: #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; duke@435: #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; duke@435: #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; duke@435: #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; duke@435: #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; duke@435: #ifdef PRODUCT duke@435: #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ duke@435: #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ duke@435: #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) duke@435: #else duke@435: #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; duke@435: #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; duke@435: #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; duke@435: #endif duke@435: duke@435: RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG) duke@435: duke@435: RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG)