| // Copyright 2013 The Flutter 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 "flutter/fml/platform/android/scoped_java_ref.h" |
| |
| #include "flutter/fml/logging.h" |
| #include "flutter/fml/platform/android/jni_util.h" |
| |
| namespace fml { |
| namespace jni { |
| |
| static const int kDefaultLocalFrameCapacity = 16; |
| |
| ScopedJavaLocalFrame::ScopedJavaLocalFrame(JNIEnv* env) : env_(env) { |
| [[maybe_unused]] int failed = |
| env_->PushLocalFrame(kDefaultLocalFrameCapacity); |
| FML_DCHECK(!failed); |
| } |
| |
| ScopedJavaLocalFrame::ScopedJavaLocalFrame(JNIEnv* env, int capacity) |
| : env_(env) { |
| [[maybe_unused]] int failed = env_->PushLocalFrame(capacity); |
| FML_DCHECK(!failed); |
| } |
| |
| ScopedJavaLocalFrame::~ScopedJavaLocalFrame() { |
| env_->PopLocalFrame(NULL); |
| } |
| |
| JavaRef<jobject>::JavaRef() : obj_(NULL) {} |
| |
| JavaRef<jobject>::JavaRef(JNIEnv* env, jobject obj) : obj_(obj) { |
| if (obj) { |
| FML_DCHECK(env && env->GetObjectRefType(obj) == JNILocalRefType); |
| } |
| } |
| |
| JavaRef<jobject>::~JavaRef() = default; |
| |
| JNIEnv* JavaRef<jobject>::SetNewLocalRef(JNIEnv* env, jobject obj) { |
| if (!env) { |
| env = AttachCurrentThread(); |
| } else { |
| FML_DCHECK(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 { |
| FML_DCHECK(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_) { |
| FML_DCHECK(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 jni |
| } // namespace fml |