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8186088: ConstantPoolCache::_resolved_references is not a JNIHandle

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Make an OopHandle type to replace jobject to encapsulate these oop pointers in metadata and module entry.

Reviewed-by: sspitsyn, dholmes, jiangli, twisti
This commit is contained in:
Coleen Phillimore 2017-08-23 12:00:39 -04:00
parent c1f2527986
commit 111116dd5b
31 changed files with 142 additions and 48 deletions
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11
hotspot/src/share/vm/classfile/moduleEntry.cpp
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@ -80,19 +80,16 @@ void ModuleEntry::set_version(Symbol* version) {
}
// Returns the shared ProtectionDomain
Handle ModuleEntry::shared_protection_domain() {
return Handle(Thread::current(), JNIHandles::resolve(_pd));
oop ModuleEntry::shared_protection_domain() {
return _pd.resolve();
}
// Set the shared ProtectionDomain atomically
void ModuleEntry::set_shared_protection_domain(ClassLoaderData *loader_data,
Handle pd_h) {
// Create a handle for the shared ProtectionDomain and save it atomically.
// If someone beats us setting the _pd cache, the created handle is destroyed.
jobject obj = loader_data->add_handle(pd_h);
if (Atomic::cmpxchg_ptr(obj, &_pd, NULL) != NULL) {
loader_data->remove_handle_unsafe(obj);
}
// init_handle_locked checks if someone beats us setting the _pd cache.
loader_data->init_handle_locked(_pd, pd_h);
}
// Returns true if this module can read module m