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8167108: inconsistent handling of SR_lock can lead to crashes

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Add Thread Safe Memory Reclamation (Thread-SMR) mechanism.

Co-authored-by: Erik Osterlund <erik.osterlund@oracle.com>
Co-authored-by: Robbin Ehn <robbin.ehn@oracle.com>
Reviewed-by: coleenp, dcubed, dholmes, eosterlund, gthornbr, kbarrett, rehn, sspitsyn, stefank
This commit is contained in:
Daniel D. Daugherty 2017-11-22 17:54:50 -08:00
parent cd0c6d0fae
commit 0dff96ff0b
67 changed files with 4220 additions and 995 deletions
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5
src/hotspot/share/gc/shared/threadLocalAllocBuffer.cpp
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@ -30,6 +30,7 @@
#include "memory/universe.inline.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/thread.inline.hpp"
#include "runtime/threadSMR.hpp"
#include "utilities/copy.hpp"
// Thread-Local Edens support
@ -48,7 +49,7 @@ void ThreadLocalAllocBuffer::clear_before_allocation() {
void ThreadLocalAllocBuffer::accumulate_statistics_before_gc() {
global_stats()->initialize();
for (JavaThread *thread = Threads::first(); thread != NULL; thread = thread->next()) {
for (JavaThreadIteratorWithHandle jtiwh; JavaThread *thread = jtiwh.next(); ) {
thread->tlab().accumulate_statistics();
thread->tlab().initialize_statistics();
}
@ -130,7 +131,7 @@ void ThreadLocalAllocBuffer::make_parsable(bool retire, bool zap) {
void ThreadLocalAllocBuffer::resize_all_tlabs() {
if (ResizeTLAB) {
for (JavaThread *thread = Threads::first(); thread != NULL; thread = thread->next()) {
for (JavaThreadIteratorWithHandle jtiwh; JavaThread *thread = jtiwh.next(); ) {
thread->tlab().resize();
}
}