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8233343: Deprecate -XX:+CriticalJNINatives flag which implements JavaCritical native functions

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Reviewed-by: rehn, mdoerr, zgu
This commit is contained in:
Coleen Phillimore 2020-10-21 20:33:24 +00:00
parent 615b759edd
commit 56ea490f1e
18 changed files with 148 additions and 1204 deletions
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20
src/hotspot/share/runtime/thread.cpp
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@ -2728,26 +2728,6 @@ void JavaThread::check_special_condition_for_native_trans(JavaThread *thread) {
}
}
// This is a variant of the normal
// check_special_condition_for_native_trans with slightly different
// semantics for use by critical native wrappers. It does all the
// normal checks but also performs the transition back into
// thread_in_Java state. This is required so that critical natives
// can potentially block and perform a GC if they are the last thread
// exiting the GCLocker.
void JavaThread::check_special_condition_for_native_trans_and_transition(JavaThread *thread) {
check_special_condition_for_native_trans(thread);
// Finish the transition
thread->set_thread_state(_thread_in_Java);
if (thread->do_critical_native_unlock()) {
ThreadInVMfromJavaNoAsyncException tiv(thread);
GCLocker::unlock_critical(thread);
thread->clear_critical_native_unlock();
}
}
// We need to guarantee the Threads_lock here, since resumes are not
// allowed during safepoint synchronization
// Can only resume from an external suspension