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/***
This file is part of PulseAudio.
Copyright 2008 Lennart Poettering
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <inttypes.h>
#ifdef HAVE_PTHREAD
#include <pthread.h>
#ifdef HAVE_PTHREAD_SETAFFINITY_NP
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#ifdef __FreeBSD__
#include <pthread_np.h>
#endif
#include <sys/param.h>
#include <sys/cpuset.h>
#endif
#endif
#endif
#include <pulse/util.h>
#include <pulse/timeval.h>
#include <pulse/gccmacro.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include <pulsecore/thread.h>
#include <pulsecore/core-util.h>
#include <pulsecore/core-rtclock.h>
static int msec_lower, msec_upper;
static void work(void *p) PA_GCC_NORETURN;
static void work(void *p) {
pa_log_notice("CPU%i: Created thread.", PA_PTR_TO_UINT(p));
pa_thread_make_realtime(12);
#ifdef HAVE_PTHREAD_SETAFFINITY_NP
{
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
cpuset_t mask;
#else
cpu_set_t mask;
#endif
CPU_ZERO(&mask);
CPU_SET((size_t) PA_PTR_TO_UINT(p), &mask);
pa_assert_se(pthread_setaffinity_np(pthread_self(), sizeof(mask), &mask) == 0);
}
#endif
for (;;) {
struct timeval now, end;
uint64_t usec;
pa_log_notice("CPU%i: Sleeping for 1s", PA_PTR_TO_UINT(p));
pa_msleep(1000);
usec =
(uint64_t) ((((double) rand())*(double)(msec_upper-msec_lower)*PA_USEC_PER_MSEC)/RAND_MAX) +
(uint64_t) ((uint64_t) msec_lower*PA_USEC_PER_MSEC);
pa_log_notice("CPU%i: Freezing for %ims", PA_PTR_TO_UINT(p), (int) (usec/PA_USEC_PER_MSEC));
pa_rtclock_get(&end);
pa_timeval_add(&end, usec);
do {
pa_rtclock_get(&now);
} while (pa_timeval_cmp(&now, &end) < 0);
}
}
int main(int argc, char*argv[]) {
unsigned n;
pa_log_set_level(PA_LOG_INFO);
srand((unsigned) time(NULL));
if (argc >= 3) {
msec_lower = atoi(argv[1]);
msec_upper = atoi(argv[2]);
} else if (argc >= 2) {
msec_lower = 0;
msec_upper = atoi(argv[1]);
} else {
msec_lower = 0;
msec_upper = 1000;
}
pa_assert(msec_upper > 0);
pa_assert(msec_upper >= msec_lower);
pa_log_notice("Creating random latencies in the range of %ims to %ims.", msec_lower, msec_upper);
for (n = 1; n < pa_ncpus(); n++) {
pa_assert_se(pa_thread_new("rtstutter", work, PA_UINT_TO_PTR(n)));
}
work(PA_INT_TO_PTR(0));
return 0;
}
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