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8200196: [Graal] implement Object.notify/notifyAll intrinsics

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Reviewed-by: iveresov
This commit is contained in:
Dean Long 2018-04-19 16:28:55 -07:00
parent 716ac034c4
commit 054d2a2984
5 changed files with 36 additions and 0 deletions
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28
src/hotspot/share/jvmci/jvmciRuntime.cpp
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@ -415,6 +415,34 @@ JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, Basic
}
JRT_END
// Object.notify() fast path, caller does slow path
JRT_LEAF(jboolean, JVMCIRuntime::object_notify(JavaThread *thread, oopDesc* obj))
// Very few notify/notifyAll operations find any threads on the waitset, so
// the dominant fast-path is to simply return.
// Relatedly, it's critical that notify/notifyAll be fast in order to
// reduce lock hold times.
if (!SafepointSynchronize::is_synchronizing()) {
if (ObjectSynchronizer::quick_notify(obj, thread, false)) {
return true;
}
}
return false; // caller must perform slow path
JRT_END
// Object.notifyAll() fast path, caller does slow path
JRT_LEAF(jboolean, JVMCIRuntime::object_notifyAll(JavaThread *thread, oopDesc* obj))
if (!SafepointSynchronize::is_synchronizing() ) {
if (ObjectSynchronizer::quick_notify(obj, thread, true)) {
return true;
}
}
return false; // caller must perform slow path
JRT_END
JRT_ENTRY(void, JVMCIRuntime::throw_and_post_jvmti_exception(JavaThread* thread, const char* exception, const char* message))
TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);