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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
namespace vbench {
template <typename T>
void
HandlerThread<T>::run()
{
for (;;) {
std::unique_lock guard(_lock);
while (!_done && _queue.empty()) {
_cond.wait(guard);
}
if (_done && _queue.empty()) {
return;
}
assert(!_queue.empty());
std::unique_ptr<T> obj(std::move(_queue.access(0)));
_queue.pop();
guard.unlock(); // UNLOCK
_next.handle(std::move(obj));
}
}
template <typename T>
HandlerThread<T>::HandlerThread(Handler<T> &next, init_fun_t init_fun)
: _lock(),
_cond(),
_queue(),
_next(next),
_thread(),
_done(false)
{
_thread = vespalib::thread::start(*this, init_fun);
}
template <typename T>
HandlerThread<T>::~HandlerThread()
{
if (!_done) {
join();
}
assert(_queue.empty());
}
template <typename T>
void
HandlerThread<T>::handle(std::unique_ptr<T> obj)
{
std::unique_lock guard(_lock);
if (!_done) {
if (_queue.empty()) {
_cond.notify_one();
}
_queue.push(std::move(obj));
}
}
template <typename T>
void
HandlerThread<T>::join()
{
{
std::lock_guard guard(_lock);
_done = true;
_cond.notify_one();
}
_thread.join();
}
} // namespace vbench
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