src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp
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rev 4773 : 8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
@@ -32,10 +32,14 @@
#include "gc_implementation/parallelScavenge/psMarkSweep.hpp"
#include "gc_implementation/parallelScavenge/psMarkSweepDecorator.hpp"
#include "gc_implementation/parallelScavenge/psOldGen.hpp"
#include "gc_implementation/parallelScavenge/psScavenge.hpp"
#include "gc_implementation/parallelScavenge/psYoungGen.hpp"
+#include "gc_implementation/shared/gcHeapSummary.hpp"
+#include "gc_implementation/shared/gcTimer.hpp"
+#include "gc_implementation/shared/gcTrace.hpp"
+#include "gc_implementation/shared/gcTraceTime.hpp"
#include "gc_implementation/shared/isGCActiveMark.hpp"
#include "gc_implementation/shared/markSweep.hpp"
#include "gc_implementation/shared/spaceDecorator.hpp"
#include "gc_interface/gcCause.hpp"
#include "memory/gcLocker.inline.hpp"
@@ -106,12 +110,16 @@
if (GC_locker::check_active_before_gc()) {
return false;
}
ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
- GCCause::Cause gc_cause = heap->gc_cause();
assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity");
+ GCCause::Cause gc_cause = heap->gc_cause();
+
+ _gc_timer->register_gc_start(os::elapsed_counter());
+ _gc_tracer->report_gc_start(gc_cause, _gc_timer->gc_start());
+
PSAdaptiveSizePolicy* size_policy = heap->size_policy();
// The scope of casr should end after code that can change
// CollectorPolicy::_should_clear_all_soft_refs.
ClearedAllSoftRefs casr(clear_all_softrefs, heap->collector_policy());
@@ -129,10 +137,11 @@
_total_invocations++;
AdaptiveSizePolicyOutput(size_policy, heap->total_collections());
heap->print_heap_before_gc();
+ heap->trace_heap_before_gc(_gc_tracer);
// Fill in TLABs
heap->accumulate_statistics_all_tlabs();
heap->ensure_parsability(true); // retire TLABs
@@ -145,11 +154,11 @@
if (VerifyObjectStartArray &&
VerifyBeforeGC) {
old_gen->verify_object_start_array();
}
- heap->pre_full_gc_dump();
+ heap->pre_full_gc_dump(_gc_timer);
// Filled in below to track the state of the young gen after the collection.
bool eden_empty;
bool survivors_empty;
bool young_gen_empty;
@@ -157,11 +166,11 @@
{
HandleMark hm;
gclog_or_tty->date_stamp(PrintGC && PrintGCDateStamps);
TraceCPUTime tcpu(PrintGCDetails, true, gclog_or_tty);
- TraceTime t1(GCCauseString("Full GC", gc_cause), PrintGC, !PrintGCDetails, gclog_or_tty);
+ GCTraceTime t1(GCCauseString("Full GC", gc_cause), PrintGC, !PrintGCDetails, NULL);
TraceCollectorStats tcs(counters());
TraceMemoryManagerStats tms(true /* Full GC */,gc_cause);
if (TraceGen1Time) accumulated_time()->start();
@@ -372,17 +381,22 @@
}
NOT_PRODUCT(ref_processor()->verify_no_references_recorded());
heap->print_heap_after_gc();
+ heap->trace_heap_after_gc(_gc_tracer);
- heap->post_full_gc_dump();
+ heap->post_full_gc_dump(_gc_timer);
#ifdef TRACESPINNING
ParallelTaskTerminator::print_termination_counts();
#endif
+ _gc_timer->register_gc_end(os::elapsed_counter());
+
+ _gc_tracer->report_gc_end(_gc_timer->gc_end(), _gc_timer->time_partitions());
+
return true;
}
bool PSMarkSweep::absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,
PSYoungGen* young_gen,
@@ -496,11 +510,11 @@
_objarray_stack.clear(true);
}
void PSMarkSweep::mark_sweep_phase1(bool clear_all_softrefs) {
// Recursively traverse all live objects and mark them
- TraceTime tm("phase 1", PrintGCDetails && Verbose, true, gclog_or_tty);
+ GCTraceTime tm("phase 1", PrintGCDetails && Verbose, true, _gc_timer);
trace(" 1");
ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity");
@@ -529,12 +543,14 @@
follow_stack();
// Process reference objects found during marking
{
ref_processor()->setup_policy(clear_all_softrefs);
+ const ReferenceProcessorStats& stats =
ref_processor()->process_discovered_references(
- is_alive_closure(), mark_and_push_closure(), follow_stack_closure(), NULL);
+ is_alive_closure(), mark_and_push_closure(), follow_stack_closure(), NULL, _gc_timer);
+ gc_tracer()->report_gc_reference_stats(stats);
}
// This is the point where the entire marking should have completed.
assert(_marking_stack.is_empty(), "Marking should have completed");
@@ -550,15 +566,16 @@
// Delete entries for dead interned strings.
StringTable::unlink(is_alive_closure());
// Clean up unreferenced symbols in symbol table.
SymbolTable::unlink();
+ _gc_tracer->report_object_count_after_gc(is_alive_closure());
}
void PSMarkSweep::mark_sweep_phase2() {
- TraceTime tm("phase 2", PrintGCDetails && Verbose, true, gclog_or_tty);
+ GCTraceTime tm("phase 2", PrintGCDetails && Verbose, true, _gc_timer);
trace("2");
// Now all live objects are marked, compute the new object addresses.
// It is not required that we traverse spaces in the same order in
@@ -584,11 +601,11 @@
};
static PSAlwaysTrueClosure always_true;
void PSMarkSweep::mark_sweep_phase3() {
// Adjust the pointers to reflect the new locations
- TraceTime tm("phase 3", PrintGCDetails && Verbose, true, gclog_or_tty);
+ GCTraceTime tm("phase 3", PrintGCDetails && Verbose, true, _gc_timer);
trace("3");
ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity");
@@ -627,11 +644,11 @@
old_gen->adjust_pointers();
}
void PSMarkSweep::mark_sweep_phase4() {
EventMark m("4 compact heap");
- TraceTime tm("phase 4", PrintGCDetails && Verbose, true, gclog_or_tty);
+ GCTraceTime tm("phase 4", PrintGCDetails && Verbose, true, _gc_timer);
trace("4");
// All pointers are now adjusted, move objects accordingly
ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();