You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
2.4 KiB
93 lines
2.4 KiB
/* |
|
* Copyright (C) 2009 The Android Open Source Project |
|
* |
|
* Licensed under the Apache License, Version 2.0 (the "License"); |
|
* you may not use this file except in compliance with the License. |
|
* You may obtain a copy of the License at |
|
* |
|
* http://www.apache.org/licenses/LICENSE-2.0 |
|
* |
|
* Unless required by applicable law or agreed to in writing, software |
|
* distributed under the License is distributed on an "AS IS" BASIS, |
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
* See the License for the specific language governing permissions and |
|
* limitations under the License. |
|
*/ |
|
|
|
#include "rsSignal.h" |
|
#include <errno.h> |
|
|
|
namespace android { |
|
namespace renderscript { |
|
|
|
Signal::Signal() { |
|
mSet = true; |
|
} |
|
|
|
Signal::~Signal() { |
|
pthread_mutex_destroy(&mMutex); |
|
pthread_cond_destroy(&mCondition); |
|
} |
|
|
|
bool Signal::init() { |
|
int status = pthread_mutex_init(&mMutex, nullptr); |
|
if (status) { |
|
ALOGE("Signal::init: mutex init failure: %s", strerror(status)); |
|
return false; |
|
} |
|
|
|
status = pthread_cond_init(&mCondition, nullptr); |
|
if (status) { |
|
ALOGE("Signal::init: condition init failure: %s", strerror(status)); |
|
pthread_mutex_destroy(&mMutex); |
|
return false; |
|
} |
|
|
|
return true; |
|
} |
|
|
|
void Signal::set() { |
|
int status = pthread_mutex_lock(&mMutex); |
|
if (status) { |
|
ALOGE("Signal::set: error locking for set condition: %s", strerror(status)); |
|
return; |
|
} |
|
|
|
mSet = true; |
|
|
|
status = pthread_cond_signal(&mCondition); |
|
if (status) { |
|
ALOGE("Signal::set: error on set condition: %s", strerror(status)); |
|
} |
|
|
|
status = pthread_mutex_unlock(&mMutex); |
|
if (status) { |
|
ALOGE("Signal::set: error unlocking for set condition: %s", strerror(status)); |
|
} |
|
} |
|
|
|
void Signal::wait() { |
|
int status = pthread_mutex_lock(&mMutex); |
|
if (status) { |
|
ALOGE("Signal::wait: error locking for condition: %s", strerror(status)); |
|
return; |
|
} |
|
|
|
if (!mSet) { |
|
status = pthread_cond_wait(&mCondition, &mMutex); |
|
} |
|
|
|
if (!status) { |
|
mSet = false; |
|
} else { |
|
ALOGE("Signal::wait: error waiting for condition: %s", strerror(status)); |
|
} |
|
|
|
status = pthread_mutex_unlock(&mMutex); |
|
if (status) { |
|
ALOGE("Signal::wait: error unlocking for condition: %s", strerror(status)); |
|
} |
|
} |
|
|
|
} // namespace renderscript |
|
} // namespace android
|
|
|