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8253180: ZGC: Implementation of JEP 376: ZGC: Concurrent Thread-Stack Processing

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Reviewed-by: stefank, pliden, rehn, neliasso, coleenp, smonteith
This commit is contained in:
Erik Österlund 2020-10-09 08:40:33 +00:00
parent a2f651904d
commit b9873e1833
131 changed files with 2428 additions and 572 deletions
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8
src/hotspot/share/jvmci/jvmciCompilerToVM.cpp
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@ -1223,7 +1223,7 @@ C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, job
HotSpotJVMCI::HotSpotStackFrameReference::klass()->initialize(CHECK_NULL);
Handle frame_reference = HotSpotJVMCI::HotSpotStackFrameReference::klass()->allocate_instance_handle(CHECK_NULL);
StackFrameStream fst(thread);
StackFrameStream fst(thread, true /* update */, true /* process_frames */);
jobjectArray methods = initial_methods;
int frame_number = 0;
@ -1330,7 +1330,7 @@ C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, job
if (HotSpotJVMCI::HotSpotStackFrameReference::objectsMaterialized(JVMCIENV, frame_reference()) == JNI_TRUE) {
// the frame has been deoptimized, we need to re-synchronize the frame and vframe
intptr_t* stack_pointer = (intptr_t*) HotSpotJVMCI::HotSpotStackFrameReference::stackPointer(JVMCIENV, frame_reference());
fst = StackFrameStream(thread);
fst = StackFrameStream(thread, true /* update */, true /* process_frames */);
while (fst.current()->sp() != stack_pointer && !fst.is_done()) {
fst.next();
}
@ -1462,7 +1462,7 @@ C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_
JVMCIENV->HotSpotStackFrameReference_initialize(JVMCI_CHECK);
// look for the given stack frame
StackFrameStream fst(thread, false);
StackFrameStream fst(thread, false /* update */, true /* process_frames */);
intptr_t* stack_pointer = (intptr_t*) JVMCIENV->get_HotSpotStackFrameReference_stackPointer(hs_frame);
while (fst.current()->sp() != stack_pointer && !fst.is_done()) {
fst.next();
@ -1480,7 +1480,7 @@ C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_
}
Deoptimization::deoptimize(thread, *fst.current(), Deoptimization::Reason_none);
// look for the frame again as it has been updated by deopt (pc, deopt state...)
StackFrameStream fstAfterDeopt(thread);
StackFrameStream fstAfterDeopt(thread, true /* update */, true /* process_frames */);
while (fstAfterDeopt.current()->sp() != stack_pointer && !fstAfterDeopt.is_done()) {
fstAfterDeopt.next();
}