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8140257: Add support for "gc service threads" to ConcurrentGCThread

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Push up the common run() and stop() methods from subclasses to ConcurrentGCThread, as well as declaration iof run_service() stop_service().

Reviewed-by: kbarrett, pliden
This commit is contained in:
Derek White 2016-03-11 16:59:58 -05:00
parent 8c894a92ef
commit f6810526ab
15 changed files with 111 additions and 223 deletions
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31
hotspot/src/share/vm/gc/g1/concurrentMarkThread.cpp
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@ -105,25 +105,16 @@ class GCConcPhaseTimer : StackObj {
}
};
void ConcurrentMarkThread::run() {
initialize_in_thread();
wait_for_universe_init();
run_service();
terminate();
}
void ConcurrentMarkThread::run_service() {
_vtime_start = os::elapsedVTime();
G1CollectedHeap* g1h = G1CollectedHeap::heap();
G1CollectorPolicy* g1_policy = g1h->g1_policy();
while (!_should_terminate) {
while (!should_terminate()) {
// wait until started is set.
sleepBeforeNextCycle();
if (_should_terminate) {
if (should_terminate()) {
_cm->root_regions()->cancel_scan();
break;
}
@ -293,22 +284,6 @@ void ConcurrentMarkThread::run_service() {
}
}
void ConcurrentMarkThread::stop() {
{
MutexLockerEx ml(Terminator_lock);
_should_terminate = true;
}
stop_service();
{
MutexLockerEx ml(Terminator_lock);
while (!_has_terminated) {
Terminator_lock->wait();
}
}
}
void ConcurrentMarkThread::stop_service() {
MutexLockerEx ml(CGC_lock, Mutex::_no_safepoint_check_flag);
CGC_lock->notify_all();
@ -320,7 +295,7 @@ void ConcurrentMarkThread::sleepBeforeNextCycle() {
assert(!in_progress(), "should have been cleared");
MutexLockerEx x(CGC_lock, Mutex::_no_safepoint_check_flag);
while (!started() && !_should_terminate) {
while (!started() && !should_terminate()) {
CGC_lock->wait(Mutex::_no_safepoint_check_flag);
}