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7074579: G1: JVM crash with JDK7 running ATG CRMDemo Fusion App

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Handlize MemoryUsage klass oop in createGCInfo routine

Reviewed-by: tonyp, fparain, ysr, jcoomes
This commit is contained in:
John Cuthbertson 2011-08-11 11:36:29 -07:00
parent e6603b37f2
commit 0da9dc64d2
1 changed files with 11 additions and 5 deletions
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16
hotspot/src/share/vm/services/gcNotifier.cpp
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@ -92,7 +92,6 @@ static Handle getGcInfoBuilder(GCMemoryManager *gcManager,TRAPS) {
&args,
CHECK_NH);
return Handle(THREAD,(oop)result.get_jobject());
}
static Handle createGcInfo(GCMemoryManager *gcManager, GCStatInfo *gcStatInfo,TRAPS) {
@ -100,9 +99,16 @@ static Handle createGcInfo(GCMemoryManager *gcManager, GCStatInfo *gcStatInfo,TR
// Fill the arrays of MemoryUsage objects with before and after GC
// per pool memory usage
klassOop muKlass = Management::java_lang_management_MemoryUsage_klass(CHECK_NH); objArrayOop bu = oopFactory::new_objArray( muKlass,MemoryService::num_memory_pools(), CHECK_NH);
klassOop mu_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_NH);
instanceKlassHandle mu_kh(THREAD, mu_klass);
// The array allocations below should use a handle containing mu_klass
// as the first allocation could trigger a GC, causing the actual
// klass oop to move, and leaving mu_klass pointing to the old
// location.
objArrayOop bu = oopFactory::new_objArray(mu_kh(), MemoryService::num_memory_pools(), CHECK_NH);
objArrayHandle usage_before_gc_ah(THREAD, bu);
objArrayOop au = oopFactory::new_objArray(muKlass,MemoryService::num_memory_pools(), CHECK_NH);
objArrayOop au = oopFactory::new_objArray(mu_kh(), MemoryService::num_memory_pools(), CHECK_NH);
objArrayHandle usage_after_gc_ah(THREAD, au);
for (int i = 0; i < MemoryService::num_memory_pools(); i++) {
@ -126,7 +132,7 @@ static Handle createGcInfo(GCMemoryManager *gcManager, GCStatInfo *gcStatInfo,TR
// The type is 'I'
objArrayOop extra_args_array = oopFactory::new_objArray(SystemDictionary::Integer_klass(), 1, CHECK_NH);
objArrayHandle extra_array (THREAD, extra_args_array);
klassOop itKlass= SystemDictionary::Integer_klass();
klassOop itKlass = SystemDictionary::Integer_klass();
instanceKlassHandle intK(THREAD, itKlass);
instanceHandle extra_arg_val = intK->allocate_instance_handle(CHECK_NH);
@ -147,7 +153,7 @@ static Handle createGcInfo(GCMemoryManager *gcManager, GCStatInfo *gcStatInfo,TR
extra_array->obj_at_put(0,extra_arg_val());
klassOop gcInfoklass = Management::com_sun_management_GcInfo_klass(CHECK_NH);
instanceKlassHandle ik (THREAD,gcInfoklass);
instanceKlassHandle ik(THREAD, gcInfoklass);
Handle gcInfo_instance = ik->allocate_instance_handle(CHECK_NH);