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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "routablequeue.h"
using namespace std::chrono;
namespace mbus {
RoutableQueue::RoutableQueue()
: _monitor(),
_queue()
{ }
RoutableQueue::~RoutableQueue()
{
while (_queue.size() > 0) {
Routable *r = _queue.front();
_queue.pop();
delete r;
}
}
uint32_t
RoutableQueue::size()
{
vespalib::MonitorGuard guard(_monitor);
return _queue.size();
}
void
RoutableQueue::enqueue(Routable::UP r)
{
vespalib::MonitorGuard guard(_monitor);
_queue.push(r.get());
r.release();
if (_queue.size() == 1) {
guard.broadcast(); // support multiple readers
}
}
Routable::UP
RoutableQueue::dequeue(uint32_t msTimeout)
{
steady_clock::time_point startTime = steady_clock::now();
uint64_t msLeft = msTimeout;
vespalib::MonitorGuard guard(_monitor);
while (_queue.size() == 0 && msLeft > 0) {
if (!guard.wait(msLeft) || _queue.size() > 0) {
break;
}
uint64_t elapsed = duration_cast<milliseconds>(steady_clock::now() - startTime).count();
msLeft = (elapsed > msTimeout) ? 0 : msTimeout - elapsed;
}
if (_queue.size() == 0) {
return Routable::UP();
}
Routable::UP ret(_queue.front());
_queue.pop();
return ret;
}
void
RoutableQueue::handleMessage(Message::UP msg)
{
Routable::UP r(msg.release());
enqueue(std::move(r));
}
void
RoutableQueue::handleReply(Reply::UP reply)
{
Routable::UP r(reply.release());
enqueue(std::move(r));
}
} // namespace mbus
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