// 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/check_op.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(nullptr); } #if DCHECK_IS_ON() // This constructor is inlined when DCHECKs are disabled; don't add anything // else here. JavaRef::JavaRef(JNIEnv* env, jobject obj) : obj_(obj) { if (obj) { DCHECK(env && env->GetObjectRefType(obj) == JNILocalRefType); } } #endif JNIEnv* JavaRef::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::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::ResetLocalRef(JNIEnv* env) { if (obj_) { DCHECK_EQ(env, AttachCurrentThread()); // Is |env| on correct thread. env->DeleteLocalRef(obj_); obj_ = nullptr; } } void JavaRef::ResetGlobalRef() { if (obj_) { AttachCurrentThread()->DeleteGlobalRef(obj_); obj_ = nullptr; } } jobject JavaRef::ReleaseInternal() { jobject obj = obj_; obj_ = nullptr; return obj; } } // namespace android } // namespace base