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8027450: Improve time reporting in G1 remark

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Reviewed-by: stefank, tschatzl
This commit is contained in:
Joseph Provino 2014-09-23 12:34:37 +02:00
parent fada700e21
commit b0b5fa7bc6
1 changed files with 29 additions and 28 deletions
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57
hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp
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@ -1288,6 +1288,22 @@ void ConcurrentMark::markFromRoots() {
print_stats();
}
// Helper class to get rid of some boilerplate code.
class G1CMTraceTime : public GCTraceTime {
static bool doit_and_prepend(bool doit) {
if (doit) {
gclog_or_tty->put(' ');
}
return doit;
}
public:
G1CMTraceTime(const char* title, bool doit)
: GCTraceTime(title, doit_and_prepend(doit), false, G1CollectedHeap::heap()->gc_timer_cm(),
G1CollectedHeap::heap()->concurrent_mark()->concurrent_gc_id()) {
}
};
void ConcurrentMark::checkpointRootsFinal(bool clear_all_soft_refs) {
// world is stopped at this checkpoint
assert(SafepointSynchronize::is_at_safepoint(),
@ -1341,9 +1357,13 @@ void ConcurrentMark::checkpointRootsFinal(bool clear_all_soft_refs) {
// marking due to overflowing the global mark stack.
reset_marking_state();
} else {
// Aggregate the per-task counting data that we have accumulated
// while marking.
aggregate_count_data();
{
G1CMTraceTime trace("GC aggregate-data", G1Log::finer());
// Aggregate the per-task counting data that we have accumulated
// while marking.
aggregate_count_data();
}
SATBMarkQueueSet& satb_mq_set = JavaThread::satb_mark_queue_set();
// We're done with marking.
@ -2466,22 +2486,6 @@ void ConcurrentMark::weakRefsWorkParallelPart(BoolObjectClosure* is_alive, bool
G1CollectedHeap::heap()->parallel_cleaning(is_alive, true, true, purged_classes);
}
// Helper class to get rid of some boilerplate code.
class G1RemarkGCTraceTime : public GCTraceTime {
static bool doit_and_prepend(bool doit) {
if (doit) {
gclog_or_tty->put(' ');
}
return doit;
}
public:
G1RemarkGCTraceTime(const char* title, bool doit)
: GCTraceTime(title, doit_and_prepend(doit), false, G1CollectedHeap::heap()->gc_timer_cm(),
G1CollectedHeap::heap()->concurrent_mark()->concurrent_gc_id()) {
}
};
void ConcurrentMark::weakRefsWork(bool clear_all_soft_refs) {
if (has_overflown()) {
// Skip processing the discovered references if we have
@ -2504,10 +2508,7 @@ void ConcurrentMark::weakRefsWork(bool clear_all_soft_refs) {
// Inner scope to exclude the cleaning of the string and symbol
// tables from the displayed time.
{
if (G1Log::finer()) {
gclog_or_tty->put(' ');
}
GCTraceTime t("GC ref-proc", G1Log::finer(), false, g1h->gc_timer_cm(), concurrent_gc_id());
G1CMTraceTime t("GC ref-proc", G1Log::finer());
ReferenceProcessor* rp = g1h->ref_processor_cm();
@ -2598,24 +2599,24 @@ void ConcurrentMark::weakRefsWork(bool clear_all_soft_refs) {
// Unload Klasses, String, Symbols, Code Cache, etc.
{
G1RemarkGCTraceTime trace("Unloading", G1Log::finer());
G1CMTraceTime trace("Unloading", G1Log::finer());
if (ClassUnloadingWithConcurrentMark) {
bool purged_classes;
{
G1RemarkGCTraceTime trace("System Dictionary Unloading", G1Log::finest());
G1CMTraceTime trace("System Dictionary Unloading", G1Log::finest());
purged_classes = SystemDictionary::do_unloading(&g1_is_alive);
}
{
G1RemarkGCTraceTime trace("Parallel Unloading", G1Log::finest());
G1CMTraceTime trace("Parallel Unloading", G1Log::finest());
weakRefsWorkParallelPart(&g1_is_alive, purged_classes);
}
}
if (G1StringDedup::is_enabled()) {
G1RemarkGCTraceTime trace("String Deduplication Unlink", G1Log::finest());
G1CMTraceTime trace("String Deduplication Unlink", G1Log::finest());
G1StringDedup::unlink(&g1_is_alive);
}
}
@ -2719,7 +2720,7 @@ void ConcurrentMark::checkpointRootsFinalWork() {
HandleMark hm;
G1CollectedHeap* g1h = G1CollectedHeap::heap();
G1RemarkGCTraceTime trace("Finalize Marking", G1Log::finer());
G1CMTraceTime trace("Finalize Marking", G1Log::finer());
g1h->ensure_parsability(false);