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8185062: Set AssumeMP to true and deprecate the flag

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Reviewed-by: shade, dcubed, kvn
This commit is contained in:
David Holmes 2017-10-02 18:56:30 -04:00
parent b787f1b55b
commit fd93a04684
4 changed files with 5 additions and 13 deletions
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11
src/hotspot/share/runtime/arguments.cpp
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@ -377,6 +377,7 @@ static SpecialFlag const special_jvm_flags[] = {
// --- Non-alias flags - sorted by obsolete_in then expired_in:
{ "MaxGCMinorPauseMillis", JDK_Version::jdk(8), JDK_Version::undefined(), JDK_Version::undefined() },
{ "UseConcMarkSweepGC", JDK_Version::jdk(9), JDK_Version::undefined(), JDK_Version::undefined() },
{ "AssumeMP", JDK_Version::jdk(10),JDK_Version::undefined(), JDK_Version::undefined() },
{ "MonitorInUseLists", JDK_Version::jdk(10),JDK_Version::undefined(), JDK_Version::undefined() },
{ "MaxRAMFraction", JDK_Version::jdk(10), JDK_Version::undefined(), JDK_Version::undefined() },
{ "MinRAMFraction", JDK_Version::jdk(10), JDK_Version::undefined(), JDK_Version::undefined() },
@ -4476,16 +4477,6 @@ jint Arguments::apply_ergo() {
set_shared_spaces_flags();
#if defined(SPARC)
// BIS instructions require 'membar' instruction regardless of the number
// of CPUs because in virtualized/container environments which might use only 1
// CPU, BIS instructions may produce incorrect results.
if (FLAG_IS_DEFAULT(AssumeMP)) {
FLAG_SET_DEFAULT(AssumeMP, true);
}
#endif
// Check the GC selections again.
if (!check_gc_consistency()) {
return JNI_EINVAL;