OpenJDK / jdk / jdk
changeset 56816:c727d5d4c22e
8233520: Shenandoah: do not sleep when thread is attaching
Reviewed-by: rkennke
| author | shade |
|---|---|
| date | Mon, 04 Nov 2019 19:40:58 +0100 |
| parents | 33f9271b3167 |
| children | 1d1f9c43138f |
| files | src/hotspot/share/gc/shenandoah/shenandoahPacer.cpp |
| diffstat | 1 files changed, 9 insertions(+), 0 deletions(-) [+] |
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--- a/src/hotspot/share/gc/shenandoah/shenandoahPacer.cpp Mon Nov 04 13:13:34 2019 -0500 +++ b/src/hotspot/share/gc/shenandoah/shenandoahPacer.cpp Mon Nov 04 19:40:58 2019 +0100 @@ -238,6 +238,15 @@ return; } + // Threads that are attaching should not block at all: they are not + // fully initialized yet. Calling sleep() on them would be awkward. + // This is probably the path that allocates the thread oop itself. + // Forcefully claim without waiting. + if (JavaThread::current()->is_attaching_via_jni()) { + claim_for_alloc(words, true); + return; + } + size_t max = ShenandoahPacingMaxDelay; double start = os::elapsedTime();