1c1cb11cf5
Java callbacks are now directly dispatched to their handler, instead of first going through filament's opportunistic dispatch, reducing callback latency.
123 lines
4.7 KiB
C++
123 lines
4.7 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "CallbackUtils.h"
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#include "private/backend/VirtualMachineEnv.h"
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void acquireCallbackJni(JNIEnv* env, CallbackJni& callbackUtils) {
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#ifdef ANDROID
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callbackUtils.handlerClass = env->FindClass("android/os/Handler");
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callbackUtils.handlerClass = (jclass) env->NewGlobalRef(callbackUtils.handlerClass);
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callbackUtils.post = env->GetMethodID(callbackUtils.handlerClass,
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"post", "(Ljava/lang/Runnable;)Z");
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#endif
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callbackUtils.executorClass = env->FindClass("java/util/concurrent/Executor");
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callbackUtils.executorClass = (jclass) env->NewGlobalRef(callbackUtils.executorClass);
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callbackUtils.execute = env->GetMethodID(callbackUtils.executorClass,
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"execute", "(Ljava/lang/Runnable;)V");
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}
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void releaseCallbackJni(JNIEnv* env, CallbackJni callbackUtils, jobject handler, jobject callback) {
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if (handler && callback) {
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#ifdef ANDROID
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if (env->IsInstanceOf(handler, callbackUtils.handlerClass)) {
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env->CallBooleanMethod(handler, callbackUtils.post, callback);
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}
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#endif
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if (env->IsInstanceOf(handler, callbackUtils.executorClass)) {
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env->CallVoidMethod(handler, callbackUtils.execute, callback);
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}
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}
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env->DeleteGlobalRef(handler);
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env->DeleteGlobalRef(callback);
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#ifdef ANDROID
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env->DeleteGlobalRef(callbackUtils.handlerClass);
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#endif
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env->DeleteGlobalRef(callbackUtils.executorClass);
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}
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// -----------------------------------------------------------------------------------------------
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JniCallback* JniCallback::make(JNIEnv* env, jobject handler, jobject callback) {
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return new JniCallback(env, handler, callback);
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}
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JniCallback::JniCallback(JNIEnv* env, jobject handler, jobject callback)
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: mHandler(env->NewGlobalRef(handler)),
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mCallback(env->NewGlobalRef(callback)) {
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acquireCallbackJni(env, mCallbackUtils);
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}
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JniCallback::~JniCallback() = default;
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void JniCallback::post(void* user, filament::backend::CallbackHandler::Callback callback) {
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callback(user);
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}
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void JniCallback::postToJavaAndDestroy(JniCallback* callback) {
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JNIEnv* env = filament::VirtualMachineEnv::get().getEnvironment();
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releaseCallbackJni(env, callback->mCallbackUtils, callback->mHandler, callback->mCallback);
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delete callback;
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}
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// -----------------------------------------------------------------------------------------------
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JniBufferCallback* JniBufferCallback::make(filament::Engine*,
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JNIEnv* env, jobject handler, jobject callback, AutoBuffer&& buffer) {
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return new JniBufferCallback(env, handler, callback, std::move(buffer));
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}
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JniBufferCallback::JniBufferCallback(JNIEnv* env, jobject handler, jobject callback,
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AutoBuffer&& buffer)
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: JniCallback(env, handler, callback),
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mBuffer(std::move(buffer)) {
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acquireCallbackJni(env, mCallbackUtils);
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}
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JniBufferCallback::~JniBufferCallback() = default;
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void JniBufferCallback::postToJavaAndDestroy(void*, size_t, void* user) {
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JniBufferCallback* callback = (JniBufferCallback*)user;
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JNIEnv* env = filament::VirtualMachineEnv::get().getEnvironment();
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callback->mBuffer.attachToJniThread(env);
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releaseCallbackJni(env, callback->mCallbackUtils, callback->mHandler, callback->mCallback);
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delete callback;
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}
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// -----------------------------------------------------------------------------------------------
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JniImageCallback* JniImageCallback::make(filament::Engine*,
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JNIEnv* env, jobject handler, jobject callback, long image) {
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return new JniImageCallback(env, handler, callback, image);
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}
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JniImageCallback::JniImageCallback(JNIEnv* env, jobject handler, jobject callback, long image)
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: JniCallback(env, handler, callback),
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mImage(image) {
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acquireCallbackJni(env, mCallbackUtils);
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}
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JniImageCallback::~JniImageCallback() = default;
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void JniImageCallback::postToJavaAndDestroy(void*, void* user) {
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JniImageCallback* callback = (JniImageCallback*)user;
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JNIEnv* env = filament::VirtualMachineEnv::get().getEnvironment();
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releaseCallbackJni(env, callback->mCallbackUtils, callback->mHandler, callback->mCallback);
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delete callback;
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}
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