diff options
Diffstat (limited to 'src/components/utils/src/threads/async_runner.cc')
-rw-r--r-- | src/components/utils/src/threads/async_runner.cc | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/components/utils/src/threads/async_runner.cc b/src/components/utils/src/threads/async_runner.cc new file mode 100644 index 0000000000..4a00317911 --- /dev/null +++ b/src/components/utils/src/threads/async_runner.cc @@ -0,0 +1,116 @@ +/* + Copyright (c) 2014, Ford Motor Company + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + + Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following + disclaimer in the documentation and/or other materials provided with the + distribution. + + Neither the name of the Ford Motor Company nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + */ + +#include "utils/threads/async_runner.h" + +#include <string> + +#include "utils/logger.h" + +namespace threads { + +CREATE_LOGGERPTR_GLOBAL(logger_, "AsyncRunner"); + +AsyncRunner::AsyncRunner(const std::string &thread_name) + : executor_(new AsyncRunnerDelegate) { + LOG4CXX_AUTO_TRACE(logger_); + thread_ = threads::CreateThread(thread_name.c_str(), + executor_); + thread_->start(); +} + +void AsyncRunner::AsyncRun(ThreadDelegate* delegate) { + LOG4CXX_AUTO_TRACE(logger_); + executor_->runDelegate(delegate); +} + +void AsyncRunner::Stop() { + LOG4CXX_AUTO_TRACE(logger_); + thread_->join(); +} + +AsyncRunner::~AsyncRunner() { + LOG4CXX_AUTO_TRACE(logger_); + thread_->join(); + delete executor_; + threads::DeleteThread(thread_); +} + +AsyncRunner::AsyncRunnerDelegate::AsyncRunnerDelegate() + : stop_flag_(false) { +} + +void AsyncRunner::AsyncRunnerDelegate::processDelegate() { + if (!delegates_queue_.empty()) { + delegates_queue_lock_.Acquire(); + ThreadDelegate* run = delegates_queue_.front(); + delegates_queue_.pop(); + delegates_queue_lock_.Release(); + + if (NULL != run) { + run->threadMain(); + delete run; + } + } +} + +void AsyncRunner::AsyncRunnerDelegate::waitForDelegate() { + LOG4CXX_AUTO_TRACE(logger_); + sync_primitives::AutoLock lock(delegates_queue_lock_); + if (!stop_flag_ && delegates_queue_.empty()) { + delegate_notifier_.Wait(lock); + } +} + +void AsyncRunner::AsyncRunnerDelegate::threadMain() { + LOG4CXX_AUTO_TRACE(logger_); + while (!stop_flag_) { + processDelegate(); + waitForDelegate(); + } +} + +void AsyncRunner::AsyncRunnerDelegate::exitThreadMain() { + LOG4CXX_AUTO_TRACE(logger_); + sync_primitives::AutoLock lock(delegates_queue_lock_); + stop_flag_ = true; + delegate_notifier_.NotifyOne(); +} + +void AsyncRunner::AsyncRunnerDelegate::runDelegate(ThreadDelegate* delegate) { + LOG4CXX_AUTO_TRACE(logger_); + sync_primitives::AutoLock lock(delegates_queue_lock_); + delegates_queue_.push(delegate); + delegate_notifier_.NotifyOne(); +} + +} // namespace policy. |