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8196083: Avoid locking in OopStorage::release

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Defer release list updates to later allocate/delete operations.

Reviewed-by: coleenp, eosterlund
This commit is contained in:
Kim Barrett 2018-02-08 17:23:43 -05:00
parent 789e827f1a
commit a25a95120e
5 changed files with 311 additions and 246 deletions
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8
src/hotspot/share/runtime/mutexLocker.cpp
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@ -253,10 +253,10 @@ void mutex_init() {
// of some places which hold other locks while releasing a handle, including
// the Patching_lock, which is of "special" rank. As a temporary workaround,
// lower the JNI oopstorage lock ranks to make them super-special.
def(JNIGlobalAlloc_lock , PaddedMutex , special-1, true, Monitor::_safepoint_check_never);
def(JNIGlobalActive_lock , PaddedMutex , special-2, true, Monitor::_safepoint_check_never);
def(JNIWeakAlloc_lock , PaddedMutex , special-1, true, Monitor::_safepoint_check_never);
def(JNIWeakActive_lock , PaddedMutex , special-2, true, Monitor::_safepoint_check_never);
def(JNIGlobalAlloc_lock , PaddedMutex , nonleaf, true, Monitor::_safepoint_check_never);
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(JNICritical_lock , PaddedMonitor, nonleaf, true, Monitor::_safepoint_check_always); // used for JNI critical regions
def(AdapterHandlerLibrary_lock , PaddedMutex , nonleaf, true, Monitor::_safepoint_check_always);