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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/android/scoped_java_ref.h"
#include "base/android/jni_android.h"
#include "base/logging.h"
namespace base {
namespace android {
namespace {
const int kDefaultLocalFrameCapacity = 16;
} // namespace
ScopedJavaLocalFrame::ScopedJavaLocalFrame(JNIEnv* env) : env_(env) {
int failed = env_->PushLocalFrame(kDefaultLocalFrameCapacity);
DCHECK(!failed);
}
ScopedJavaLocalFrame::ScopedJavaLocalFrame(JNIEnv* env, int capacity)
: env_(env) {
int failed = env_->PushLocalFrame(capacity);
DCHECK(!failed);
}
ScopedJavaLocalFrame::~ScopedJavaLocalFrame() { env_->PopLocalFrame(NULL); }
#if DCHECK_IS_ON()
// This constructor is inlined when DCHECKs are disabled; don't add anything
// else here.
JavaRef<jobject>::JavaRef(JNIEnv* env, jobject obj) : obj_(obj) {
if (obj) {
DCHECK(env && env->GetObjectRefType(obj) == JNILocalRefType);
}
}
#endif
JNIEnv* JavaRef<jobject>::SetNewLocalRef(JNIEnv* env, jobject obj) {
if (!env) {
env = AttachCurrentThread();
} else {
DCHECK_EQ(env, AttachCurrentThread()); // Is |env| on correct thread.
}
if (obj)
obj = env->NewLocalRef(obj);
if (obj_)
env->DeleteLocalRef(obj_);
obj_ = obj;
return env;
}
void JavaRef<jobject>::SetNewGlobalRef(JNIEnv* env, jobject obj) {
if (!env) {
env = AttachCurrentThread();
} else {
DCHECK_EQ(env, AttachCurrentThread()); // Is |env| on correct thread.
}
if (obj)
obj = env->NewGlobalRef(obj);
if (obj_)
env->DeleteGlobalRef(obj_);
obj_ = obj;
}
void JavaRef<jobject>::ResetLocalRef(JNIEnv* env) {
if (obj_) {
DCHECK_EQ(env, AttachCurrentThread()); // Is |env| on correct thread.
env->DeleteLocalRef(obj_);
obj_ = NULL;
}
}
void JavaRef<jobject>::ResetGlobalRef() {
if (obj_) {
AttachCurrentThread()->DeleteGlobalRef(obj_);
obj_ = NULL;
}
}
jobject JavaRef<jobject>::ReleaseInternal() {
jobject obj = obj_;
obj_ = NULL;
return obj;
}
} // namespace android
} // namespace base
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