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8049831: Metadata Full GCs are not triggered when CMSClassUnloadingEnabled is turned off

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Reviewed-by: brutisso, tschatzl, ehelin, jmasa, dfazunen
This commit is contained in:
Stefan Karlsson 2014-07-11 09:07:23 +02:00
parent b77bc85799
commit a5b4cec253
2 changed files with 18 additions and 16 deletions
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33
hotspot/src/share/vm/gc_implementation/shared/vmGCOperations.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -197,28 +197,29 @@ void VM_GenCollectFull::doit() {
bool VM_CollectForMetadataAllocation::initiate_concurrent_GC() {
#if INCLUDE_ALL_GCS
if (UseConcMarkSweepGC || UseG1GC) {
if (UseConcMarkSweepGC && CMSClassUnloadingEnabled) {
MetaspaceGC::set_should_concurrent_collect(true);
} else if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
g1h->g1_policy()->set_initiate_conc_mark_if_possible();
if (UseConcMarkSweepGC && CMSClassUnloadingEnabled) {
MetaspaceGC::set_should_concurrent_collect(true);
return true;
}
GCCauseSetter x(g1h, _gc_cause);
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
g1h->g1_policy()->set_initiate_conc_mark_if_possible();
// At this point we are supposed to start a concurrent cycle. We
// will do so if one is not already in progress.
bool should_start = g1h->g1_policy()->force_initial_mark_if_outside_cycle(_gc_cause);
GCCauseSetter x(g1h, _gc_cause);
if (should_start) {
double pause_target = g1h->g1_policy()->max_pause_time_ms();
g1h->do_collection_pause_at_safepoint(pause_target);
}
// At this point we are supposed to start a concurrent cycle. We
// will do so if one is not already in progress.
bool should_start = g1h->g1_policy()->force_initial_mark_if_outside_cycle(_gc_cause);
if (should_start) {
double pause_target = g1h->g1_policy()->max_pause_time_ms();
g1h->do_collection_pause_at_safepoint(pause_target);
}
return true;
}
#endif
return false;
}

1
hotspot/test/TEST.groups
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@ -271,6 +271,7 @@ needs_cmsgc = \
gc/arguments/TestCMSHeapSizeFlags.java \
gc/arguments/TestMaxNewSize.java \
gc/arguments/TestUseCompressedOopsErgo.java \
gc/class_unloading/TestCMSClassUnloadingDisabledHWM.java \
gc/concurrentMarkSweep/ \
gc/startup_warnings/TestCMS.java \
gc/startup_warnings/TestCMSIncrementalMode.java \