void TNonblockingIOThread::setCurrentThreadHighPriority(bool value) {
#ifdef HAVE_SCHED_H
// Start out with a standard, low-priority setup for the sched params.
struct sched_param sp;
bzero((void*) &sp, sizeof(sp));
int policy = SCHED_OTHER;
// If desired, set up high-priority sched params structure.
if (value) {
// FIFO scheduler, ranked above default SCHED_OTHER queue
policy = SCHED_FIFO;
// The priority only compares us to other SCHED_FIFO threads, so we
// just pick a random priority halfway between min & max.
const int priority = (sched_get_priority_max(policy) +
sched_get_priority_min(policy)) / 2;
sp.sched_priority = priority;
}
// Actually set the sched params for the current thread.
if (0 == pthread_setschedparam(pthread_self(), policy, &sp)) {
GlobalOutput.printf(
"TNonblocking: IO Thread #%d using high-priority scheduler!", number_);
} else {
GlobalOutput.perror("TNonblocking: pthread_setschedparam(): ", THRIFT_GET_SOCKET_ERROR);
}
#else
THRIFT_UNUSED_VARIABLE(value);
#endif
}
int64_t Util::currentTimeTicks(int64_t ticksPerSec) {
int64_t result;
struct timeval now;
int ret = THRIFT_GETTIMEOFDAY(&now, NULL);
assert(ret == 0);
THRIFT_UNUSED_VARIABLE(ret); // squelching "unused variable" warning
toTicks(result, now, ticksPerSec);
return result;
}