Skip to content

8314061: [JVMCI] DeoptimizeALot stress logic breaks deferred barriers #15218

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

8314061: [JVMCI] DeoptimizeALot stress logic breaks deferred barriers #15218

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 3 additions & 2 deletions src/hotspot/share/jvmci/jvmciRuntime.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -174,15 +174,15 @@ JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array_common(JavaThread* current, Klass*
RetryableAllocationMark ram(current, null_on_fail);
obj = oopFactory::new_objArray(elem_klass, length, CHECK);
}
current->set_vm_result(obj);
// This is pretty rare but this runtime patch is stressful to deoptimization
// if we deoptimize here so force a deopt to stress the path.
if (DeoptimizeALot) {
static int deopts = 0;
// Alternate between deoptimizing and raising an error (which will also cause a deopt)
if (deopts++ % 2 == 0) {
if (null_on_fail) {
return;
// Drop the allocation
obj = nullptr;
} else {
ResourceMark rm(current);
THROW(vmSymbols::java_lang_OutOfMemoryError());
Expand All @@ -191,6 +191,7 @@ JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array_common(JavaThread* current, Klass*
deopt_caller();
}
}
current->set_vm_result(obj);
JRT_BLOCK_END;
SharedRuntime::on_slowpath_allocation_exit(current);
JRT_END
Expand Down