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8166461: Deprecate UseAutoGCSelectPolicy

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Reviewed-by: kbarrett, ehelin
This commit is contained in:
Sangheon Kim 2016-10-17 21:21:53 -07:00
parent f860133cc4
commit fb49622c7e
2 changed files with 55 additions and 4 deletions
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13
hotspot/src/share/vm/runtime/arguments.cpp
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@ -372,6 +372,7 @@ static SpecialFlag const special_jvm_flags[] = {
// -------------- Deprecated Flags --------------
// --- Non-alias flags - sorted by obsolete_in then expired_in:
{ "MaxGCMinorPauseMillis", JDK_Version::jdk(8), JDK_Version::undefined(), JDK_Version::undefined() },
{ "UseAutoGCSelectPolicy", JDK_Version::jdk(9), JDK_Version::undefined(), JDK_Version::jdk(10) },
{ "UseParNewGC", JDK_Version::jdk(9), JDK_Version::undefined(), JDK_Version::jdk(10) },
{ "ConvertSleepToYield", JDK_Version::jdk(9), JDK_Version::jdk(10), JDK_Version::jdk(11) },
{ "ConvertYieldToSleep", JDK_Version::jdk(9), JDK_Version::jdk(10), JDK_Version::jdk(11) },
@ -1801,11 +1802,15 @@ bool Arguments::gc_selected() {
void Arguments::select_gc_ergonomically() {
#if INCLUDE_ALL_GCS
if (os::is_server_class_machine()) {
if (should_auto_select_low_pause_collector()) {
FLAG_SET_ERGO_IF_DEFAULT(bool, UseConcMarkSweepGC, true);
FLAG_SET_ERGO_IF_DEFAULT(bool, UseParNewGC, true);
if (!UseAutoGCSelectPolicy) {
FLAG_SET_ERGO_IF_DEFAULT(bool, UseG1GC, true);
} else {
FLAG_SET_ERGO_IF_DEFAULT(bool, UseG1GC, true);
if (should_auto_select_low_pause_collector()) {
FLAG_SET_ERGO_IF_DEFAULT(bool, UseConcMarkSweepGC, true);
FLAG_SET_ERGO_IF_DEFAULT(bool, UseParNewGC, true);
} else {
FLAG_SET_ERGO_IF_DEFAULT(bool, UseParallelGC, true);
}
}
} else {
FLAG_SET_ERGO_IF_DEFAULT(bool, UseSerialGC, true);