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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "entrypoints/entrypoint_utils.h"
#include "mirror/art_method-inl.h"
#include "mirror/object-inl.h"
#include "thread-inl.h"
namespace art {
// Called on entry to JNI, transition out of Runnable and release share of mutator_lock_.
extern "C" uint32_t art_portable_jni_method_start(Thread* self)
UNLOCK_FUNCTION(Locks::mutator_lock_) {
JNIEnvExt* env = self->GetJniEnv();
uint32_t saved_local_ref_cookie = env->local_ref_cookie;
env->local_ref_cookie = env->locals.GetSegmentState();
self->TransitionFromRunnableToSuspended(kNative);
return saved_local_ref_cookie;
}
extern "C" uint32_t art_portable_jni_method_start_synchronized(jobject to_lock, Thread* self)
UNLOCK_FUNCTION(Locks::mutator_lock_) NO_THREAD_SAFETY_ANALYSIS {
self->DecodeJObject(to_lock)->MonitorEnter(self);
return art_portable_jni_method_start(self);
}
static void PopLocalReferences(uint32_t saved_local_ref_cookie, Thread* self) {
JNIEnvExt* env = self->GetJniEnv();
env->locals.SetSegmentState(env->local_ref_cookie);
env->local_ref_cookie = saved_local_ref_cookie;
}
extern "C" void art_portable_jni_method_end(uint32_t saved_local_ref_cookie, Thread* self)
SHARED_LOCK_FUNCTION(Locks::mutator_lock_) {
self->TransitionFromSuspendedToRunnable();
PopLocalReferences(saved_local_ref_cookie, self);
}
extern "C" void art_portable_jni_method_end_synchronized(uint32_t saved_local_ref_cookie,
jobject locked,
Thread* self)
SHARED_LOCK_FUNCTION(Locks::mutator_lock_) {
self->TransitionFromSuspendedToRunnable();
UnlockJniSynchronizedMethod(locked, self); // Must decode before pop.
PopLocalReferences(saved_local_ref_cookie, self);
}
extern "C" mirror::Object* art_portable_jni_method_end_with_reference(jobject result,
uint32_t saved_local_ref_cookie,
Thread* self)
SHARED_LOCK_FUNCTION(Locks::mutator_lock_) {
self->TransitionFromSuspendedToRunnable();
mirror::Object* o = self->DecodeJObject(result); // Must decode before pop.
PopLocalReferences(saved_local_ref_cookie, self);
// Process result.
if (UNLIKELY(self->GetJniEnv()->check_jni)) {
if (self->IsExceptionPending()) {
return NULL;
}
CheckReferenceResult(o, self);
}
return o;
}
extern "C" mirror::Object* art_portable_jni_method_end_with_reference_synchronized(jobject result,
uint32_t saved_local_ref_cookie,
jobject locked,
Thread* self)
SHARED_LOCK_FUNCTION(Locks::mutator_lock_) {
self->TransitionFromSuspendedToRunnable();
UnlockJniSynchronizedMethod(locked, self); // Must decode before pop.
mirror::Object* o = self->DecodeJObject(result);
PopLocalReferences(saved_local_ref_cookie, self);
// Process result.
if (UNLIKELY(self->GetJniEnv()->check_jni)) {
if (self->IsExceptionPending()) {
return NULL;
}
CheckReferenceResult(o, self);
}
return o;
}
} // namespace art
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