src/ipc/named_event_main.cc

// Copyright 2010-2015, Google Inc.
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#include "ipc/named_event.h"

#include <string>

#include "base/flags.h"
#include "base/logging.h"
#include "base/port.h"

DEFINE_bool(listener, true, "listener mode");
DEFINE_bool(notifier, false, "notifier mode");
DEFINE_int32(timeout, -1, "timeout (msec)");
DEFINE_int32(pid, -1, "process id");
DEFINE_string(name, "named_event_test", "name for named event");

int main(int argc, char **argv) {
  InitGoogle(argv[0], &argc, &argv, false);

  if (FLAGS_notifier) {
    mozc::NamedEventNotifier notifier(FLAGS_name.c_str());
    CHECK(notifier.IsAvailable())
        << "NamedEventNotifier is not available";

    notifier.Notify();
    LOG(INFO) << "Notification has been sent";

  } else if (FLAGS_listener) {
    mozc::NamedEventListener listener(FLAGS_name.c_str());
    CHECK(listener.IsAvailable())
      << "NamedEventListener is not available";

    LOG_IF(INFO, listener.IsOwner()) << "This instance owns event handle";

    LOG(INFO) << "Waiting event " << FLAGS_name;
    if (FLAGS_pid != -1) {
      switch (listener.WaitEventOrProcess(FLAGS_timeout,
                                          static_cast<size_t>(FLAGS_pid))) {
        case mozc::NamedEventListener::TIMEOUT:
          LOG(INFO) << "timeout";
          break;
        case mozc::NamedEventListener::EVENT_SIGNALED:
          LOG(INFO) << "event singaled";
          break;
        case mozc::NamedEventListener::PROCESS_SIGNALED:
          LOG(INFO) << "process signaled";
          break;
        default:
          LOG(INFO) << "unknown result";
          break;
      }
    } else {
      if (listener.Wait(FLAGS_timeout)) {
        LOG(INFO) << "Event comes";
      }
    }

  } else {
    LOG(FATAL) << "please specify --listener or --notifier";
  }

  return 0;
}