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8059466: Force young GC to initiate marking cycle when stat update is requested

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Enable yc to be forced for stat update.

Reviewed-by: mgerdin, jcoomes
This commit is contained in:
Stefan Johansson 2014-10-06 10:11:13 +02:00
parent 4a82f3067a
commit 18eb46eb95
4 changed files with 8 additions and 4 deletions
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1
hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
View file

@ -2343,6 +2343,7 @@ bool G1CollectedHeap::should_do_concurrent_full_gc(GCCause::Cause cause) {
case GCCause::_gc_locker: return GCLockerInvokesConcurrent; case GCCause::_gc_locker: return GCLockerInvokesConcurrent;
case GCCause::_java_lang_system_gc: return ExplicitGCInvokesConcurrent; case GCCause::_java_lang_system_gc: return ExplicitGCInvokesConcurrent;
case GCCause::_g1_humongous_allocation: return true; case GCCause::_g1_humongous_allocation: return true;
case GCCause::_update_allocation_context_stats_inc: return true;
default: return false; default: return false;
} }
} }

5
hotspot/src/share/vm/gc_implementation/g1/vm_operations_g1.cpp
View file

@ -95,8 +95,9 @@ void VM_G1IncCollectionPause::doit() {
assert(!_should_initiate_conc_mark || assert(!_should_initiate_conc_mark ||
((_gc_cause == GCCause::_gc_locker && GCLockerInvokesConcurrent) || ((_gc_cause == GCCause::_gc_locker && GCLockerInvokesConcurrent) ||
(_gc_cause == GCCause::_java_lang_system_gc && ExplicitGCInvokesConcurrent) || (_gc_cause == GCCause::_java_lang_system_gc && ExplicitGCInvokesConcurrent) ||
_gc_cause == GCCause::_g1_humongous_allocation), _gc_cause == GCCause::_g1_humongous_allocation ||
"only a GC locker, a System.gc() or a hum allocation induced GC should start a cycle"); _gc_cause == GCCause::_update_allocation_context_stats_inc),
"only a GC locker, a System.gc(), stats update or a hum allocation induced GC should start a cycle");
if (_word_size > 0) { if (_word_size > 0) {
// An allocation has been requested. So, try to do that first. // An allocation has been requested. So, try to do that first.

3
hotspot/src/share/vm/gc_interface/gcCause.cpp
View file

@ -54,7 +54,8 @@ const char* GCCause::to_string(GCCause::Cause cause) {
case _wb_young_gc: case _wb_young_gc:
return "WhiteBox Initiated Young GC"; return "WhiteBox Initiated Young GC";
case _update_allocation_context_stats: case _update_allocation_context_stats_inc:
case _update_allocation_context_stats_full:
return "Update Allocation Context Stats"; return "Update Allocation Context Stats";
case _no_gc: case _no_gc:

3
hotspot/src/share/vm/gc_interface/gcCause.hpp
View file

@ -47,7 +47,8 @@ class GCCause : public AllStatic {
_heap_inspection, _heap_inspection,
_heap_dump, _heap_dump,
_wb_young_gc, _wb_young_gc,
_update_allocation_context_stats, _update_allocation_context_stats_inc,
_update_allocation_context_stats_full,
/* implementation independent, but reserved for GC use */ /* implementation independent, but reserved for GC use */
_no_gc, _no_gc,