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7085404: JSR 292: VolatileCallSites should have push notification too

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Reviewed-by: never, kvn
This commit is contained in:
Christian Thalinger 2011-09-02 00:36:18 -07:00
parent fcc2a86582
commit db44acbeb4
7 changed files with 35 additions and 33 deletions
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13
hotspot/src/share/vm/prims/unsafe.cpp
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@ -302,6 +302,19 @@ UNSAFE_ENTRY(void, Unsafe_SetObjectVolatile(JNIEnv *env, jobject unsafe, jobject
UnsafeWrapper("Unsafe_SetObjectVolatile");
oop x = JNIHandles::resolve(x_h);
oop p = JNIHandles::resolve(obj);
// Catch VolatileCallSite.target stores (via
// CallSite.setTargetVolatile) and check call site dependencies.
if ((offset == java_lang_invoke_CallSite::target_offset_in_bytes()) && p->is_a(SystemDictionary::CallSite_klass())) {
oop call_site = p;
oop method_handle = x;
assert(call_site ->is_a(SystemDictionary::CallSite_klass()), "must be");
assert(method_handle->is_a(SystemDictionary::MethodHandle_klass()), "must be");
{
// Walk all nmethods depending on this call site.
MutexLocker mu(Compile_lock, thread);
Universe::flush_dependents_on(call_site, method_handle);
}
}
void* addr = index_oop_from_field_offset_long(p, offset);
OrderAccess::release();
if (UseCompressedOops) {