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8221750: Shenandoah: Enable ThreadLocalHandshake by default

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Reviewed-by: shade
This commit is contained in:
Roman Kennke 2019-04-01 16:30:23 +02:00
parent 246544eeb7
commit 9e18ef0679
1 changed files with 0 additions and 12 deletions
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12
src/hotspot/share/gc/shenandoah/shenandoahArguments.cpp
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@ -135,18 +135,6 @@ void ShenandoahArguments::initialize() {
FLAG_SET_DEFAULT(ShenandoahAlwaysPreTouch, true); FLAG_SET_DEFAULT(ShenandoahAlwaysPreTouch, true);
} }
// Shenandoah C2 optimizations apparently dislike the shape of thread-local handshakes.
// Disable it by default, unless we enable it specifically for debugging.
if (FLAG_IS_DEFAULT(ThreadLocalHandshakes)) {
if (ThreadLocalHandshakes) {
FLAG_SET_DEFAULT(ThreadLocalHandshakes, false);
}
} else {
if (ThreadLocalHandshakes) {
warning("Thread-local handshakes are not working correctly with Shenandoah at the moment. Enable at your own risk.");
}
}
// Record more information about previous cycles for improved debugging pleasure // Record more information about previous cycles for improved debugging pleasure
if (FLAG_IS_DEFAULT(LogEventsBufferEntries)) { if (FLAG_IS_DEFAULT(LogEventsBufferEntries)) {
FLAG_SET_DEFAULT(LogEventsBufferEntries, 250); FLAG_SET_DEFAULT(LogEventsBufferEntries, 250);