jdk8-mips64-public/hotspot: src/share/vm/prims/whitebox.cpp@d17700c82d7d (annotated)

src/share/vm/prims/whitebox.cpp@d17700c82d7d (annotated)

src/share/vm/prims/whitebox.cpp

Mon, 06 May 2013 17:19:42 +0200

author: tschatzl
date: Mon, 06 May 2013 17:19:42 +0200
changeset 5073: d17700c82d7d
parent 5040: 9ce110b1d14a
child 5174: f54c85acc043
permissions: -rw-r--r--

8006088: Incompatible heap size flags accepted by VM
Summary: Make processing of minimum, initial and maximum heap size more intiutive by removing previous limitations on allowed values, and make error reporting consistent. Further, fix errors in ergonomic heap sizing.
Reviewed-by: johnc, jwilhelm, tamao

 /*
  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "memory/universe.hpp"
 #include "oops/oop.inline.hpp"
 #include "classfile/symbolTable.hpp"
 #include "classfile/classLoaderData.hpp"
 #include "prims/whitebox.hpp"
 #include "prims/wbtestmethods/parserTests.hpp"
 #include "runtime/interfaceSupport.hpp"
 #include "runtime/os.hpp"
 #include "utilities/debug.hpp"
 #include "utilities/macros.hpp"
 #if INCLUDE_ALL_GCS
 #include "gc_implementation/g1/concurrentMark.hpp"
 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
 #include "gc_implementation/g1/heapRegionRemSet.hpp"
 #endif // INCLUDE_ALL_GCS
 #ifdef INCLUDE_NMT
 #include "services/memTracker.hpp"
 #endif // INCLUDE_NMT
 #include "compiler/compileBroker.hpp"
 #include "runtime/compilationPolicy.hpp"
 bool WhiteBox::_used = false;
 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
   return (jlong)(void*)JNIHandles::resolve(obj);
 WB_END
 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
   return heapOopSize;
 WB_END
 class WBIsKlassAliveClosure : public KlassClosure {
     Symbol* _name;
     bool _found;
 public:
     WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
     void do_klass(Klass* k) {
       if (_found) return;
       Symbol* ksym = k->name();
       if (ksym->fast_compare(_name) == 0) {
         _found = true;
       }
     }
     bool found() const {
         return _found;
     }
 };
 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
   Handle h_name = JNIHandles::resolve(name);
   if (h_name.is_null()) return false;
   Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
   TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
   WBIsKlassAliveClosure closure(sym);
   ClassLoaderDataGraph::classes_do(&closure);
   return closure.found();
 WB_END
 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
   CollectorPolicy * p = Universe::heap()->collector_policy();
   gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
     SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
     p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
     p->min_alignment(), p->max_alignment());
 }
 WB_END
 #if INCLUDE_ALL_GCS
 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
   G1CollectedHeap* g1 = G1CollectedHeap::heap();
   oop result = JNIHandles::resolve(obj);
   const HeapRegion* hr = g1->heap_region_containing(result);
   return hr->isHumongous();
 WB_END
 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
   G1CollectedHeap* g1 = G1CollectedHeap::heap();
   size_t nr = g1->free_regions();
   return (jlong)nr;
 WB_END
 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
   G1CollectedHeap* g1 = G1CollectedHeap::heap();
   ConcurrentMark* cm = g1->concurrent_mark();
   return cm->concurrent_marking_in_progress();
 WB_END
 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
   return (jint)HeapRegion::GrainBytes;
 WB_END
 #endif // INCLUDE_ALL_GCS
 #ifdef INCLUDE_NMT
 // Alloc memory using the test memory type so that we can use that to see if
 // NMT picks it up correctly
 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
   jlong addr = 0;
   if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) {
     addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
   }
   return addr;
 WB_END
 // Free the memory allocated by NMTAllocTest
 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
   os::free((void*)(uintptr_t)mem, mtTest);
 WB_END
 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
   jlong addr = 0;
   if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) {
     addr = (jlong)(uintptr_t)os::reserve_memory(size);
     MemTracker::record_virtual_memory_type((address)addr, mtTest);
   }
   return addr;
 WB_END
 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
   os::commit_memory((char *)(uintptr_t)addr, size);
   MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
 WB_END
 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
   os::uncommit_memory((char *)(uintptr_t)addr, size);
 WB_END
 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
   os::release_memory((char *)(uintptr_t)addr, size);
 WB_END
 // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature
 WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env))
   if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) {
     return false;
   }
   return MemTracker::wbtest_wait_for_data_merge();
 WB_END
 #endif // INCLUDE_NMT
 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
   assert(method != NULL, "method should not be null");
   ThreadToNativeFromVM ttn(thread);
   return env->FromReflectedMethod(method);
 }
 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
   MutexLockerEx mu(Compile_lock);
   CodeCache::mark_all_nmethods_for_deoptimization();
   VM_Deoptimize op;
   VMThread::execute(&op);
 WB_END
 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   MutexLockerEx mu(Compile_lock);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   int result = 0;
   nmethod* code = mh->code();
   if (code != NULL) {
     code->mark_for_deoptimization();
     ++result;
   }
   result += CodeCache::mark_for_deoptimization(mh());
   if (result > 0) {
     VM_Deoptimize op;
     VMThread::execute(&op);
   }
   return result;
 WB_END
 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   MutexLockerEx mu(Compile_lock);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   nmethod* code = mh->code();
   if (code == NULL) {
     return JNI_FALSE;
   }
   return (code->is_alive() && !code->is_marked_for_deoptimization());
 WB_END
 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   MutexLockerEx mu(Compile_lock);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   return CompilationPolicy::can_be_compiled(mh, comp_level);
 WB_END
 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   MutexLockerEx mu(Compile_lock);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   return mh->queued_for_compilation();
 WB_END
 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   nmethod* code = mh->code();
   return (code != NULL ? code->comp_level() : CompLevel_none);
 WB_END
 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
 WB_END
 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   bool result = mh->dont_inline();
   mh->set_dont_inline(value == JNI_TRUE);
   return result;
 WB_END
 WB_ENTRY(jint, WB_GetCompileQueuesSize(JNIEnv* env, jobject o))
   return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
          CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
 WB_END
 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   bool result = mh->force_inline();
   mh->set_force_inline(value == JNI_TRUE);
   return result;
 WB_END
 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   nmethod* nm = CompileBroker::compile_method(mh, InvocationEntryBci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
   MutexLockerEx mu(Compile_lock);
   return (mh->queued_for_compilation() || nm != NULL);
 WB_END
 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
   MutexLockerEx mu(Compile_lock);
   MethodData* mdo = mh->method_data();
   MethodCounters* mcs = mh->method_counters();
   if (mdo != NULL) {
     mdo->init();
     ResourceMark rm;
     int arg_count = mdo->method()->size_of_parameters();
     for (int i = 0; i < arg_count; i++) {
       mdo->set_arg_modified(i, 0);
     }
   }
   mh->clear_not_c1_compilable();
   mh->clear_not_c2_compilable();
   mh->clear_not_c2_osr_compilable();
   NOT_PRODUCT(mh->set_compiled_invocation_count(0));
   if (mcs != NULL) {
     mcs->backedge_counter()->init();
     mcs->invocation_counter()->init();
     mcs->set_interpreter_invocation_count(0);
     mcs->set_interpreter_throwout_count(0);
 #ifdef TIERED
     mcs->set_rate(0.0F);
     mh->set_prev_event_count(0, THREAD);
     mh->set_prev_time(0, THREAD);
 #endif
   }
 WB_END
 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
   ResourceMark rm(THREAD);
   int len;
   jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
   return (StringTable::lookup(name, len) != NULL);
 WB_END
 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
   Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
   Universe::heap()->collect(GCCause::_last_ditch_collection);
 WB_END
 WB_ENTRY(jlong, WB_ReserveMemory(JNIEnv* env, jobject o, jlong size))
   return (jlong)os::reserve_memory(size, NULL, 0);
 WB_END
 //Some convenience methods to deal with objects from java
 int WhiteBox::offset_for_field(const char* field_name, oop object,
     Symbol* signature_symbol) {
   assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
   Thread* THREAD = Thread::current();
   //Get the class of our object
   Klass* arg_klass = object->klass();
   //Turn it into an instance-klass
   InstanceKlass* ik = InstanceKlass::cast(arg_klass);
   //Create symbols to look for in the class
   TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
       THREAD);
   //To be filled in with an offset of the field we're looking for
   fieldDescriptor fd;
   Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
   if (res == NULL) {
     tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
         name_symbol->as_C_string());
     fatal("Invalid layout of preloaded class");
   }
   //fetch the field at the offset we've found
   int dest_offset = fd.offset();
   return dest_offset;
 }
 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
   int offset = offset_for_field(field_name, object,
       vmSymbols::string_signature());
   oop string = object->obj_field(offset);
   if (string == NULL) {
     return NULL;
   }
   const char* ret = java_lang_String::as_utf8_string(string);
   return ret;
 }
 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
   int offset =
       offset_for_field(field_name, object, vmSymbols::bool_signature());
   bool ret = (object->bool_field(offset) == JNI_TRUE);
   return ret;
 }
 #define CC (char*)
 static JNINativeMethod methods[] = {
   {CC"getObjectAddress",   CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress  },
   {CC"getHeapOopSize",     CC"()I",                   (void*)&WB_GetHeapOopSize    },
   {CC"isClassAlive0",      CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive      },
   {CC"parseCommandLine",
       CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
       (void*) &WB_ParseCommandLine
   },
   {CC"printHeapSizes",     CC"()V",                   (void*)&WB_PrintHeapSizes    },
 #if INCLUDE_ALL_GCS
   {CC"g1InConcurrentMark", CC"()Z",                   (void*)&WB_G1InConcurrentMark},
   {CC"g1IsHumongous",      CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous     },
   {CC"g1NumFreeRegions",   CC"()J",                   (void*)&WB_G1NumFreeRegions  },
   {CC"g1RegionSize",       CC"()I",                   (void*)&WB_G1RegionSize      },
 #endif // INCLUDE_ALL_GCS
 #ifdef INCLUDE_NMT
   {CC"NMTMalloc",           CC"(J)J",                 (void*)&WB_NMTMalloc          },
   {CC"NMTFree",             CC"(J)V",                 (void*)&WB_NMTFree            },
   {CC"NMTReserveMemory",    CC"(J)J",                 (void*)&WB_NMTReserveMemory   },
   {CC"NMTCommitMemory",     CC"(JJ)V",                (void*)&WB_NMTCommitMemory    },
   {CC"NMTUncommitMemory",   CC"(JJ)V",                (void*)&WB_NMTUncommitMemory  },
   {CC"NMTReleaseMemory",    CC"(JJ)V",                (void*)&WB_NMTReleaseMemory   },
   {CC"NMTWaitForDataMerge", CC"()Z",                  (void*)&WB_NMTWaitForDataMerge},
 #endif // INCLUDE_NMT
   {CC"deoptimizeAll",      CC"()V",                   (void*)&WB_DeoptimizeAll     },
   {CC"deoptimizeMethod",   CC"(Ljava/lang/reflect/Executable;)I",
                                                       (void*)&WB_DeoptimizeMethod  },
   {CC"isMethodCompiled",   CC"(Ljava/lang/reflect/Executable;)Z",
                                                       (void*)&WB_IsMethodCompiled  },
   {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;I)Z",
                                                       (void*)&WB_IsMethodCompilable},
   {CC"isMethodQueuedForCompilation",
       CC"(Ljava/lang/reflect/Executable;)Z",          (void*)&WB_IsMethodQueuedForCompilation},
   {CC"makeMethodNotCompilable",
       CC"(Ljava/lang/reflect/Executable;I)V",         (void*)&WB_MakeMethodNotCompilable},
   {CC"testSetDontInlineMethod",
       CC"(Ljava/lang/reflect/Executable;Z)Z",         (void*)&WB_TestSetDontInlineMethod},
   {CC"getMethodCompilationLevel",
       CC"(Ljava/lang/reflect/Executable;)I",          (void*)&WB_GetMethodCompilationLevel},
   {CC"getCompileQueuesSize",
       CC"()I",                                        (void*)&WB_GetCompileQueuesSize},
   {CC"testSetForceInlineMethod",
       CC"(Ljava/lang/reflect/Executable;Z)Z",         (void*)&WB_TestSetForceInlineMethod},
   {CC"enqueueMethodForCompilation",
       CC"(Ljava/lang/reflect/Executable;I)Z",         (void*)&WB_EnqueueMethodForCompilation},
   {CC"clearMethodState",
       CC"(Ljava/lang/reflect/Executable;)V",          (void*)&WB_ClearMethodState},
   {CC"isInStringTable",   CC"(Ljava/lang/String;)Z",  (void*)&WB_IsInStringTable  },
   {CC"fullGC",   CC"()V",                             (void*)&WB_FullGC },
   {CC"reserveMemory", CC"(J)J", (void*)&WB_ReserveMemory },
 };
 #undef CC
 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
   {
     if (WhiteBoxAPI) {
       // Make sure that wbclass is loaded by the null classloader
       instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
       Handle loader(ikh->class_loader());
       if (loader.is_null()) {
         ResourceMark rm;
         ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
         bool result = true;
         //  one by one registration natives for exception catching
         jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
         for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) {
           if (env->RegisterNatives(wbclass, methods + i, 1) != 0) {
             result = false;
             if (env->ExceptionCheck() && env->IsInstanceOf(env->ExceptionOccurred(), exceptionKlass)) {
               // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native
               // ignoring the exception
               tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature);
               env->ExceptionClear();
             } else {
               // register is failed w/o exception or w/ unexpected exception
               tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", methods[i].name, methods[i].signature);
               env->UnregisterNatives(wbclass);
               break;
             }
           }
         }
         if (result) {
           WhiteBox::set_used();
         }
       }
     }
   }
 JVM_END

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/prims/whitebox.cpp@d17700c82d7d (annotated)

src/share/vm/prims/whitebox.cpp