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8068394: Trace event for concurrent GC phases

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Add concurrent phase events for CMS and G1

Reviewed-by: brutisso, stefank
This commit is contained in:
Sangheon Kim 2015-12-18 08:17:30 -08:00
parent a22ed33318
commit 93bd48e615
10 changed files with 203 additions and 100 deletions
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18
hotspot/src/share/vm/gc/g1/concurrentMarkThread.cpp
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@ -90,6 +90,20 @@ void ConcurrentMarkThread::delay_to_keep_mmu(G1CollectorPolicy* g1_policy, bool
os::sleep(this, sleep_time_ms, false);
}
}
class GCConcPhaseTimer : StackObj {
ConcurrentMark* _cm;
public:
GCConcPhaseTimer(ConcurrentMark* cm, const char* title) : _cm(cm) {
_cm->register_concurrent_phase_start(title);
}
~GCConcPhaseTimer() {
_cm->register_concurrent_phase_end();
}
};
void ConcurrentMarkThread::run() {
initialize_in_thread();
wait_for_universe_init();
@ -127,6 +141,7 @@ void ConcurrentMarkThread::run_service() {
// correctness issue.
if (!cm()->has_aborted()) {
GCConcPhaseTimer(_cm, "Concurrent Root Region Scanning");
_cm->scanRootRegions();
}
@ -140,6 +155,7 @@ void ConcurrentMarkThread::run_service() {
do {
iter++;
if (!cm()->has_aborted()) {
GCConcPhaseTimer(_cm, "Concurrent Mark");
_cm->markFromRoots();
}
@ -194,6 +210,7 @@ void ConcurrentMarkThread::run_service() {
// reclaimed by cleanup.
GCTraceConcTime(Info, gc) tt("Concurrent Cleanup");
GCConcPhaseTimer(_cm, "Concurrent Cleanup");
// Now do the concurrent cleanup operation.
_cm->completeCleanup();
@ -250,6 +267,7 @@ void ConcurrentMarkThread::run_service() {
// We may have aborted just before the remark. Do not bother clearing the
// bitmap then, as it has been done during mark abort.
if (!cm()->has_aborted()) {
GCConcPhaseTimer(_cm, "Concurrent Bitmap Clearing");
_cm->clearNextBitmap();
} else {
assert(!G1VerifyBitmaps || _cm->nextMarkBitmapIsClear(), "Next mark bitmap must be clear");