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8194085: Obsolete the deprecated SafepointSynchronize flags and remove related code

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Obsolete SafepointSpinBeforeYield, DeferThrSuspendLoopCount, and DeferPollingPageLoopCount and remove associated code.

Reviewed-by: dcubed, coleenp, dholmes
This commit is contained in:
Harold Seigel 2018-02-26 11:28:05 -05:00
parent e447371492
commit 114e61d126
4 changed files with 26 additions and 56 deletions
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11
src/hotspot/share/runtime/arguments.cpp
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@ -50,6 +50,7 @@
#include "runtime/globals_extension.hpp"
#include "runtime/java.hpp"
#include "runtime/os.hpp"
#include "runtime/safepoint.hpp"
#include "runtime/safepointMechanism.hpp"
#include "runtime/vm_version.hpp"
#include "services/management.hpp"
@ -509,9 +510,6 @@ static SpecialFlag const special_jvm_flags[] = {
{ "MinRAMFraction", JDK_Version::jdk(10), JDK_Version::undefined(), JDK_Version::undefined() },
{ "InitialRAMFraction", JDK_Version::jdk(10), JDK_Version::undefined(), JDK_Version::undefined() },
{ "UseMembar", JDK_Version::jdk(10), JDK_Version::undefined(), JDK_Version::undefined() },
{ "SafepointSpinBeforeYield", JDK_Version::jdk(10), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "DeferThrSuspendLoopCount", JDK_Version::jdk(10), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "DeferPollingPageLoopCount", JDK_Version::jdk(10), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "IgnoreUnverifiableClassesDuringDump", JDK_Version::jdk(10), JDK_Version::undefined(), JDK_Version::undefined() },
{ "CheckEndorsedAndExtDirs", JDK_Version::jdk(10), JDK_Version::undefined(), JDK_Version::undefined() },
{ "CompilerThreadHintNoPreempt", JDK_Version::jdk(11), JDK_Version::jdk(12), JDK_Version::jdk(13) },
@ -532,6 +530,9 @@ static SpecialFlag const special_jvm_flags[] = {
{ "PrintMalloc", JDK_Version::undefined(), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "ShowSafepointMsgs", JDK_Version::undefined(), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "FastTLABRefill", JDK_Version::jdk(10), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "SafepointSpinBeforeYield", JDK_Version::jdk(10), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "DeferThrSuspendLoopCount", JDK_Version::jdk(10), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "DeferPollingPageLoopCount", JDK_Version::jdk(10), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "PermSize", JDK_Version::undefined(), JDK_Version::jdk(8), JDK_Version::undefined() },
{ "MaxPermSize", JDK_Version::undefined(), JDK_Version::jdk(8), JDK_Version::undefined() },
{ "SharedReadWriteSize", JDK_Version::undefined(), JDK_Version::jdk(10), JDK_Version::undefined() },
@ -2951,9 +2952,7 @@ jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, bool* patch_m
if (FLAG_SET_CMDLINE(bool, BackgroundCompilation, false) != Flag::SUCCESS) {
return JNI_EINVAL;
}
if (FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1) != Flag::SUCCESS) {
return JNI_EINVAL;
}
SafepointSynchronize::set_defer_thr_suspend_loop_count();
if (FLAG_SET_CMDLINE(bool, UseTLAB, false) != Flag::SUCCESS) {
return JNI_EINVAL;
}