1 // Copyright 2014 The Android Open Source Project
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
15 #include "emugl/common/message_channel.h"
19 MessageChannelBase::MessageChannelBase(size_t capacity) :
27 MessageChannelBase::~MessageChannelBase() {}
29 size_t MessageChannelBase::beforeWrite() {
31 while (mCount >= mCapacity) {
32 mCanWrite.wait(&mLock);
34 size_t result = mPos + mCount;
35 if (result >= mCapacity) {
41 void MessageChannelBase::afterWrite() {
47 size_t MessageChannelBase::beforeRead() {
50 mCanRead.wait(&mLock);
55 void MessageChannelBase::afterRead() {
56 if (++mPos == mCapacity) {