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8209976: Improve iteration over non-JavaThreads

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Add NonJavaThread and move NamedThread iteration to new class.

Reviewed-by: eosterlund, coleenp, rkennke
This commit is contained in:
Kim Barrett 2018-08-28 16:04:54 -04:00
parent 1ddabdf0dc
commit e1059f1301
8 changed files with 107 additions and 121 deletions
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4
src/hotspot/share/runtime/mutexLocker.cpp
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@ -76,7 +76,7 @@ Monitor* VMOperationRequest_lock = NULL;
Monitor* Safepoint_lock = NULL;
Monitor* SerializePage_lock = NULL;
Monitor* Threads_lock = NULL;
Mutex* NamedThreadsList_lock = NULL;
Mutex* NonJavaThreadsList_lock = NULL;
Monitor* CGC_lock = NULL;
Monitor* STS_lock = NULL;
Monitor* FullGCCount_lock = NULL;
@ -257,7 +257,7 @@ void mutex_init() {
def(Safepoint_lock , PaddedMonitor, safepoint, true, Monitor::_safepoint_check_sometimes); // locks SnippetCache_lock/Threads_lock
def(Threads_lock , PaddedMonitor, barrier, true, Monitor::_safepoint_check_sometimes);
def(NamedThreadsList_lock , PaddedMutex, leaf, true, Monitor::_safepoint_check_never);
def(NonJavaThreadsList_lock , PaddedMutex, leaf, true, Monitor::_safepoint_check_never);
def(VMOperationQueue_lock , PaddedMonitor, nonleaf, true, Monitor::_safepoint_check_sometimes); // VM_thread allowed to block on these
def(VMOperationRequest_lock , PaddedMonitor, nonleaf, true, Monitor::_safepoint_check_sometimes);