Sun, 02 Mar 2008 16:10:12 -0800
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
Summary: Default values set by cms ergonomics are set with FLAG_SET_DEFAULT so down stream the values look like the default values and affect how later parameters are set. Set these values with FLAG_SET_ERGO instead and adjust how later parameters are interpreted.
Reviewed-by: iveresov, apetrusenko, pbk, ysr
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | #include "incls/_precompiled.incl" |
duke@435 | 26 | #include "incls/_mutexLocker.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | // Mutexes used in the VM (see comment in mutexLocker.hpp): |
duke@435 | 29 | // |
duke@435 | 30 | // Note that the following pointers are effectively final -- after having been |
duke@435 | 31 | // set at JVM startup-time, they should never be subsequently mutated. |
duke@435 | 32 | // Instead of using pointers to malloc()ed monitors and mutexes we should consider |
duke@435 | 33 | // eliminating the indirection and using instances instead. |
duke@435 | 34 | // Consider using GCC's __read_mostly. |
duke@435 | 35 | |
duke@435 | 36 | Mutex* Patching_lock = NULL; |
duke@435 | 37 | Monitor* SystemDictionary_lock = NULL; |
duke@435 | 38 | Mutex* PackageTable_lock = NULL; |
duke@435 | 39 | Mutex* CompiledIC_lock = NULL; |
duke@435 | 40 | Mutex* InlineCacheBuffer_lock = NULL; |
duke@435 | 41 | Mutex* VMStatistic_lock = NULL; |
duke@435 | 42 | Mutex* JNIGlobalHandle_lock = NULL; |
duke@435 | 43 | Mutex* JNIHandleBlockFreeList_lock = NULL; |
duke@435 | 44 | Mutex* JNICachedItableIndex_lock = NULL; |
duke@435 | 45 | Mutex* JmethodIdCreation_lock = NULL; |
duke@435 | 46 | Mutex* JfieldIdCreation_lock = NULL; |
duke@435 | 47 | Monitor* JNICritical_lock = NULL; |
duke@435 | 48 | Mutex* JvmtiThreadState_lock = NULL; |
duke@435 | 49 | Monitor* JvmtiPendingEvent_lock = NULL; |
duke@435 | 50 | Mutex* Heap_lock = NULL; |
duke@435 | 51 | Mutex* ExpandHeap_lock = NULL; |
duke@435 | 52 | Mutex* AdapterHandlerLibrary_lock = NULL; |
duke@435 | 53 | Mutex* SignatureHandlerLibrary_lock = NULL; |
duke@435 | 54 | Mutex* VtableStubs_lock = NULL; |
duke@435 | 55 | Mutex* SymbolTable_lock = NULL; |
duke@435 | 56 | Mutex* StringTable_lock = NULL; |
duke@435 | 57 | Mutex* CodeCache_lock = NULL; |
duke@435 | 58 | Mutex* MethodData_lock = NULL; |
duke@435 | 59 | Mutex* RetData_lock = NULL; |
duke@435 | 60 | Monitor* VMOperationQueue_lock = NULL; |
duke@435 | 61 | Monitor* VMOperationRequest_lock = NULL; |
duke@435 | 62 | Monitor* Safepoint_lock = NULL; |
duke@435 | 63 | Monitor* SerializePage_lock = NULL; |
duke@435 | 64 | Monitor* Threads_lock = NULL; |
duke@435 | 65 | Monitor* CGC_lock = NULL; |
duke@435 | 66 | Mutex* STS_init_lock = NULL; |
duke@435 | 67 | Monitor* SLT_lock = NULL; |
duke@435 | 68 | Monitor* iCMS_lock = NULL; |
duke@435 | 69 | Monitor* FullGCCount_lock = NULL; |
duke@435 | 70 | Mutex* ParGCRareEvent_lock = NULL; |
duke@435 | 71 | Mutex* DerivedPointerTableGC_lock = NULL; |
duke@435 | 72 | Mutex* Compile_lock = NULL; |
duke@435 | 73 | Monitor* MethodCompileQueue_lock = NULL; |
duke@435 | 74 | #ifdef TIERED |
duke@435 | 75 | Monitor* C1_lock = NULL; |
duke@435 | 76 | #endif // TIERED |
duke@435 | 77 | Monitor* CompileThread_lock = NULL; |
duke@435 | 78 | Mutex* CompileTaskAlloc_lock = NULL; |
duke@435 | 79 | Mutex* CompileStatistics_lock = NULL; |
duke@435 | 80 | Mutex* MultiArray_lock = NULL; |
duke@435 | 81 | Monitor* Terminator_lock = NULL; |
duke@435 | 82 | Monitor* BeforeExit_lock = NULL; |
duke@435 | 83 | Monitor* Notify_lock = NULL; |
duke@435 | 84 | Monitor* Interrupt_lock = NULL; |
duke@435 | 85 | Monitor* ProfileVM_lock = NULL; |
duke@435 | 86 | Mutex* ProfilePrint_lock = NULL; |
duke@435 | 87 | Mutex* ExceptionCache_lock = NULL; |
duke@435 | 88 | Monitor* ObjAllocPost_lock = NULL; |
duke@435 | 89 | Mutex* OsrList_lock = NULL; |
duke@435 | 90 | #ifndef PRODUCT |
duke@435 | 91 | Mutex* FullGCALot_lock = NULL; |
duke@435 | 92 | #endif |
duke@435 | 93 | |
duke@435 | 94 | Mutex* Debug1_lock = NULL; |
duke@435 | 95 | Mutex* Debug2_lock = NULL; |
duke@435 | 96 | Mutex* Debug3_lock = NULL; |
duke@435 | 97 | |
duke@435 | 98 | Mutex* tty_lock = NULL; |
duke@435 | 99 | |
duke@435 | 100 | Mutex* RawMonitor_lock = NULL; |
duke@435 | 101 | Mutex* PerfDataMemAlloc_lock = NULL; |
duke@435 | 102 | Mutex* PerfDataManager_lock = NULL; |
duke@435 | 103 | Mutex* OopMapCacheAlloc_lock = NULL; |
duke@435 | 104 | |
duke@435 | 105 | Monitor* GCTaskManager_lock = NULL; |
duke@435 | 106 | |
duke@435 | 107 | Mutex* Management_lock = NULL; |
duke@435 | 108 | Monitor* LowMemory_lock = NULL; |
duke@435 | 109 | |
duke@435 | 110 | #define MAX_NUM_MUTEX 128 |
duke@435 | 111 | static Monitor * _mutex_array[MAX_NUM_MUTEX]; |
duke@435 | 112 | static int _num_mutex; |
duke@435 | 113 | |
duke@435 | 114 | #ifdef ASSERT |
duke@435 | 115 | void assert_locked_or_safepoint(const Monitor * lock) { |
duke@435 | 116 | // check if this thread owns the lock (common case) |
duke@435 | 117 | if (IgnoreLockingAssertions) return; |
duke@435 | 118 | assert(lock != NULL, "Need non-NULL lock"); |
duke@435 | 119 | if (lock->owned_by_self()) return; |
duke@435 | 120 | if (SafepointSynchronize::is_at_safepoint()) return; |
duke@435 | 121 | if (!Universe::is_fully_initialized()) return; |
duke@435 | 122 | // see if invoker of VM operation owns it |
duke@435 | 123 | VM_Operation* op = VMThread::vm_operation(); |
duke@435 | 124 | if (op != NULL && op->calling_thread() == lock->owner()) return; |
duke@435 | 125 | fatal1("must own lock %s", lock->name()); |
duke@435 | 126 | } |
duke@435 | 127 | |
duke@435 | 128 | // a stronger assertion than the above |
duke@435 | 129 | void assert_lock_strong(const Monitor * lock) { |
duke@435 | 130 | if (IgnoreLockingAssertions) return; |
duke@435 | 131 | assert(lock != NULL, "Need non-NULL lock"); |
duke@435 | 132 | if (lock->owned_by_self()) return; |
duke@435 | 133 | fatal1("must own lock %s", lock->name()); |
duke@435 | 134 | } |
duke@435 | 135 | #endif |
duke@435 | 136 | |
duke@435 | 137 | #define def(var, type, pri, vm_block) { \ |
duke@435 | 138 | var = new type(Mutex::pri, #var, vm_block); \ |
duke@435 | 139 | assert(_num_mutex < MAX_NUM_MUTEX, \ |
duke@435 | 140 | "increase MAX_NUM_MUTEX"); \ |
duke@435 | 141 | _mutex_array[_num_mutex++] = var; \ |
duke@435 | 142 | } |
duke@435 | 143 | |
duke@435 | 144 | void mutex_init() { |
duke@435 | 145 | def(tty_lock , Mutex , event, true ); // allow to lock in VM |
duke@435 | 146 | |
duke@435 | 147 | def(CGC_lock , Monitor, special, true ); // coordinate between fore- and background GC |
duke@435 | 148 | def(STS_init_lock , Mutex, leaf, true ); |
duke@435 | 149 | if (UseConcMarkSweepGC) { |
duke@435 | 150 | def(iCMS_lock , Monitor, special, true ); // CMS incremental mode start/stop notification |
duke@435 | 151 | def(FullGCCount_lock , Monitor, leaf, true ); // in support of ExplicitGCInvokesConcurrent |
duke@435 | 152 | } |
duke@435 | 153 | def(ParGCRareEvent_lock , Mutex , leaf , true ); |
duke@435 | 154 | def(DerivedPointerTableGC_lock , Mutex, leaf, true ); |
duke@435 | 155 | def(CodeCache_lock , Mutex , special, true ); |
duke@435 | 156 | def(Interrupt_lock , Monitor, special, true ); // used for interrupt processing |
duke@435 | 157 | def(RawMonitor_lock , Mutex, special, true ); |
duke@435 | 158 | def(OopMapCacheAlloc_lock , Mutex, leaf, true ); // used for oop_map_cache allocation. |
duke@435 | 159 | |
duke@435 | 160 | def(Patching_lock , Mutex , special, true ); // used for safepointing and code patching. |
duke@435 | 161 | def(ObjAllocPost_lock , Monitor, special, false); |
duke@435 | 162 | def(LowMemory_lock , Monitor, special, true ); // used for low memory detection |
duke@435 | 163 | def(JmethodIdCreation_lock , Mutex , leaf, true ); // used for creating jmethodIDs. |
duke@435 | 164 | |
duke@435 | 165 | def(SystemDictionary_lock , Monitor, leaf, true ); // lookups done by VM thread |
duke@435 | 166 | def(PackageTable_lock , Mutex , leaf, false); |
duke@435 | 167 | def(InlineCacheBuffer_lock , Mutex , leaf, true ); |
duke@435 | 168 | def(VMStatistic_lock , Mutex , leaf, false); |
duke@435 | 169 | def(ExpandHeap_lock , Mutex , leaf, true ); // Used during compilation by VM thread |
duke@435 | 170 | def(JNIHandleBlockFreeList_lock , Mutex , leaf, true ); // handles are used by VM thread |
duke@435 | 171 | def(SignatureHandlerLibrary_lock , Mutex , leaf, false); |
duke@435 | 172 | def(SymbolTable_lock , Mutex , leaf, true ); |
duke@435 | 173 | def(StringTable_lock , Mutex , leaf, true ); |
duke@435 | 174 | def(ProfilePrint_lock , Mutex , leaf, false); // serial profile printing |
duke@435 | 175 | def(ExceptionCache_lock , Mutex , leaf, false); // serial profile printing |
duke@435 | 176 | def(OsrList_lock , Mutex , leaf, true ); |
duke@435 | 177 | def(Debug1_lock , Mutex , leaf, true ); |
duke@435 | 178 | #ifndef PRODUCT |
duke@435 | 179 | def(FullGCALot_lock , Mutex , leaf, false); // a lock to make FullGCALot MT safe |
duke@435 | 180 | #endif |
duke@435 | 181 | def(BeforeExit_lock , Monitor, leaf, true ); |
duke@435 | 182 | def(PerfDataMemAlloc_lock , Mutex , leaf, true ); // used for allocating PerfData memory for performance data |
duke@435 | 183 | def(PerfDataManager_lock , Mutex , leaf, true ); // used for synchronized access to PerfDataManager resources |
duke@435 | 184 | |
duke@435 | 185 | // CMS_modUnionTable_lock leaf |
duke@435 | 186 | // CMS_bitMap_lock leaf + 1 |
duke@435 | 187 | // CMS_freeList_lock leaf + 2 |
duke@435 | 188 | |
duke@435 | 189 | def(Safepoint_lock , Monitor, safepoint, true ); // locks SnippetCache_lock/Threads_lock |
duke@435 | 190 | |
duke@435 | 191 | if (!UseMembar) { |
duke@435 | 192 | def(SerializePage_lock , Monitor, leaf, true ); |
duke@435 | 193 | } |
duke@435 | 194 | |
duke@435 | 195 | def(Threads_lock , Monitor, barrier, true ); |
duke@435 | 196 | |
duke@435 | 197 | def(VMOperationQueue_lock , Monitor, nonleaf, true ); // VM_thread allowed to block on these |
duke@435 | 198 | def(VMOperationRequest_lock , Monitor, nonleaf, true ); |
duke@435 | 199 | def(RetData_lock , Mutex , nonleaf, false); |
duke@435 | 200 | def(Terminator_lock , Monitor, nonleaf, true ); |
duke@435 | 201 | def(VtableStubs_lock , Mutex , nonleaf, true ); |
duke@435 | 202 | def(Notify_lock , Monitor, nonleaf, true ); |
duke@435 | 203 | def(JNIGlobalHandle_lock , Mutex , nonleaf, true ); // locks JNIHandleBlockFreeList_lock |
duke@435 | 204 | def(JNICritical_lock , Monitor, nonleaf, true ); // used for JNI critical regions |
duke@435 | 205 | def(AdapterHandlerLibrary_lock , Mutex , nonleaf, true); |
duke@435 | 206 | if (UseConcMarkSweepGC) { |
duke@435 | 207 | def(SLT_lock , Monitor, nonleaf, false ); |
duke@435 | 208 | // used in CMS GC for locking PLL lock |
duke@435 | 209 | } |
duke@435 | 210 | def(Heap_lock , Mutex , nonleaf+1, false); |
duke@435 | 211 | def(JfieldIdCreation_lock , Mutex , nonleaf+1, true ); // jfieldID, Used in VM_Operation |
duke@435 | 212 | def(JNICachedItableIndex_lock , Mutex , nonleaf+1, false); // Used to cache an itable index during JNI invoke |
duke@435 | 213 | |
duke@435 | 214 | def(CompiledIC_lock , Mutex , nonleaf+2, false); // locks VtableStubs_lock, InlineCacheBuffer_lock |
duke@435 | 215 | def(CompileTaskAlloc_lock , Mutex , nonleaf+2, true ); |
duke@435 | 216 | def(CompileStatistics_lock , Mutex , nonleaf+2, false); |
duke@435 | 217 | def(MultiArray_lock , Mutex , nonleaf+2, false); // locks SymbolTable_lock |
duke@435 | 218 | |
duke@435 | 219 | def(JvmtiThreadState_lock , Mutex , nonleaf+2, false); // Used by JvmtiThreadState/JvmtiEventController |
duke@435 | 220 | def(JvmtiPendingEvent_lock , Monitor, nonleaf, false); // Used by JvmtiCodeBlobEvents |
duke@435 | 221 | def(Management_lock , Mutex , nonleaf+2, false); // used for JVM management |
duke@435 | 222 | |
duke@435 | 223 | def(Compile_lock , Mutex , nonleaf+3, true ); |
duke@435 | 224 | def(MethodData_lock , Mutex , nonleaf+3, false); |
duke@435 | 225 | |
duke@435 | 226 | def(MethodCompileQueue_lock , Monitor, nonleaf+4, true ); |
duke@435 | 227 | def(Debug2_lock , Mutex , nonleaf+4, true ); |
duke@435 | 228 | def(Debug3_lock , Mutex , nonleaf+4, true ); |
duke@435 | 229 | def(ProfileVM_lock , Monitor, nonleaf+4, false); // used for profiling of the VMThread |
duke@435 | 230 | def(CompileThread_lock , Monitor, nonleaf+5, false ); |
duke@435 | 231 | #ifdef TIERED |
duke@435 | 232 | def(C1_lock , Monitor, nonleaf+5, false ); |
duke@435 | 233 | #endif // TIERED |
duke@435 | 234 | |
duke@435 | 235 | |
duke@435 | 236 | } |
duke@435 | 237 | |
duke@435 | 238 | GCMutexLocker::GCMutexLocker(Monitor * mutex) { |
duke@435 | 239 | if (SafepointSynchronize::is_at_safepoint()) { |
duke@435 | 240 | _locked = false; |
duke@435 | 241 | } else { |
duke@435 | 242 | _mutex = mutex; |
duke@435 | 243 | _locked = true; |
duke@435 | 244 | _mutex->lock(); |
duke@435 | 245 | } |
duke@435 | 246 | } |
duke@435 | 247 | |
duke@435 | 248 | // Print all mutexes/monitors that are currently owned by a thread; called |
duke@435 | 249 | // by fatal error handler. |
duke@435 | 250 | void print_owned_locks_on_error(outputStream* st) { |
duke@435 | 251 | st->print("VM Mutex/Monitor currently owned by a thread: "); |
duke@435 | 252 | bool none = true; |
duke@435 | 253 | for (int i = 0; i < _num_mutex; i++) { |
duke@435 | 254 | // see if it has an owner |
duke@435 | 255 | if (_mutex_array[i]->owner() != NULL) { |
duke@435 | 256 | if (none) { |
duke@435 | 257 | // print format used by Mutex::print_on_error() |
duke@435 | 258 | st->print_cr(" ([mutex/lock_event])"); |
duke@435 | 259 | none = false; |
duke@435 | 260 | } |
duke@435 | 261 | _mutex_array[i]->print_on_error(st); |
duke@435 | 262 | st->cr(); |
duke@435 | 263 | } |
duke@435 | 264 | } |
duke@435 | 265 | if (none) st->print_cr("None"); |
duke@435 | 266 | } |