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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 <vespa/fnet/fnet.h>
#include <vespa/fastos/app.h>
#include <vespa/vespalib/util/time.h>
#include <thread>
#include <vespa/log/log.h>
LOG_SETUP("timeout");
class Timeout : public FNET_Task
{
private:
FNET_PacketQueue *_queue;
Timeout(const Timeout &);
Timeout &operator=(const Timeout &);
public:
Timeout(FNET_Scheduler *scheduler,
FNET_PacketQueue *queue)
: FNET_Task(scheduler),
_queue(queue)
{}
void PerformTask() override;
};
void
Timeout::PerformTask()
{
_queue->QueuePacket(&FNET_ControlPacket::Timeout, FNET_Context());
}
class MyApp : public FastOS_Application
{
public:
int Main() override;
};
int
MyApp::Main()
{
using clock = std::chrono::steady_clock;
using ms_double = std::chrono::duration<double,std::milli>;
ms_double ms;
clock::time_point t;
FNET_PacketQueue queue;
FastOS_ThreadPool pool(65000);
FNET_Transport transport;
Timeout timeout(transport.GetScheduler(), &queue);
transport.Start(&pool);
// stable-state operation
std::this_thread::sleep_for(500ms);
FNET_Packet *packet;
FNET_Context context;
fprintf(stderr, "scheduling timeout in 2 seconds...\n");
t = clock::now();
timeout.Schedule(2.0); // timeout in 2 seconds
std::this_thread::sleep_for(1s);
timeout.Unschedule(); // cancel timeout
ms = (clock::now() - t);
if (queue.GetPacketCnt_NoLock() == 0)
fprintf(stderr, "timeout canceled; no timeout packet delivered\n");
fprintf(stderr, "time since timeout was scheduled: %f ms\n", ms.count());
fprintf(stderr, "scheduling timeout in 2 seconds...\n");
t = clock::now();
timeout.Schedule(2.0); // timeout in 2 seconds
packet = queue.DequeuePacket(&context); // wait for timeout
ms = (clock::now() - t);
if (packet->IsTimeoutCMD())
fprintf(stderr, "got timeout packet\n");
fprintf(stderr, "time since timeout was scheduled: %f ms\n", ms.count());
transport.ShutDown(true);
pool.Close();
return 0;
}
int
main(int argc, char **argv)
{
MyApp myapp;
return myapp.Entry(argc, argv);
}
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