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.