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#include <boost/thread.hpp>
#include <string>
#include "caffe/data_layers.hpp"
#include "caffe/data_reader.hpp"
#include "caffe/parallel.hpp"
#include "caffe/util/blocking_queue.hpp"
namespace caffe {
template<typename T>
class BlockingQueue<T>::sync {
public:
mutable boost::mutex mutex_;
boost::condition_variable condition_;
};
template<typename T>
BlockingQueue<T>::BlockingQueue()
: sync_(new sync()) {
}
template<typename T>
void BlockingQueue<T>::push(const T& t) {
boost::mutex::scoped_lock lock(sync_->mutex_);
queue_.push(t);
lock.unlock();
sync_->condition_.notify_one();
}
template<typename T>
bool BlockingQueue<T>::try_pop(T* t) {
boost::mutex::scoped_lock lock(sync_->mutex_);
if (queue_.empty()) {
return false;
}
*t = queue_.front();
queue_.pop();
return true;
}
template<typename T>
T BlockingQueue<T>::pop(const string& log_on_wait) {
boost::mutex::scoped_lock lock(sync_->mutex_);
while (queue_.empty()) {
if (!log_on_wait.empty()) {
LOG_EVERY_N(INFO, 1000)<< log_on_wait;
}
sync_->condition_.wait(lock);
}
T t = queue_.front();
queue_.pop();
return t;
}
template<typename T>
bool BlockingQueue<T>::try_peek(T* t) {
boost::mutex::scoped_lock lock(sync_->mutex_);
if (queue_.empty()) {
return false;
}
*t = queue_.front();
return true;
}
template<typename T>
T BlockingQueue<T>::peek() {
boost::mutex::scoped_lock lock(sync_->mutex_);
while (queue_.empty()) {
sync_->condition_.wait(lock);
}
return queue_.front();
}
template<typename T>
size_t BlockingQueue<T>::size() const {
boost::mutex::scoped_lock lock(sync_->mutex_);
return queue_.size();
}
template class BlockingQueue<Batch<float>*>;
template class BlockingQueue<Batch<double>*>;
template class BlockingQueue<Datum*>;
template class BlockingQueue<shared_ptr<DataReader::QueuePair> >;
template class BlockingQueue<P2PSync<float>*>;
template class BlockingQueue<P2PSync<double>*>;
} // namespace caffe
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