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8198313: Wrap holder object for ClassLoaderData in a WeakHandle

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Use WeakHandle for ClassLoaderData::_holder so that is_alive closure is not needed

Reviewed-by: rehn, kbarrett
This commit is contained in:
Coleen Phillimore 2018-04-10 10:06:42 -04:00
parent 21f636f3cf
commit d187884156
13 changed files with 273 additions and 48 deletions
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4
src/hotspot/share/runtime/mutexLocker.cpp
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@ -48,6 +48,8 @@ Mutex* JNIGlobalActive_lock = NULL;
Mutex* JNIWeakAlloc_lock = NULL;
Mutex* JNIWeakActive_lock = NULL;
Mutex* JNIHandleBlockFreeList_lock = NULL;
Mutex* VMWeakAlloc_lock = NULL;
Mutex* VMWeakActive_lock = NULL;
Mutex* ResolvedMethodTable_lock = NULL;
Mutex* JmethodIdCreation_lock = NULL;
Mutex* JfieldIdCreation_lock = NULL;
@ -260,6 +262,8 @@ void mutex_init() {
def(JNIGlobalActive_lock , PaddedMutex , nonleaf-1, true, Monitor::_safepoint_check_never);
def(JNIWeakAlloc_lock , PaddedMutex , nonleaf, true, Monitor::_safepoint_check_never);
def(JNIWeakActive_lock , PaddedMutex , nonleaf-1, true, Monitor::_safepoint_check_never);
def(VMWeakAlloc_lock , PaddedMutex , nonleaf, true, Monitor::_safepoint_check_never);
def(VMWeakActive_lock , PaddedMutex , nonleaf-1, true, Monitor::_safepoint_check_never);
def(JNICritical_lock , PaddedMonitor, nonleaf, true, Monitor::_safepoint_check_always); // used for JNI critical regions
def(AdapterHandlerLibrary_lock , PaddedMutex , nonleaf, true, Monitor::_safepoint_check_always);