2 This file is part of PulseAudio.
4 Copyright 2008 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
35 #include <pulse/util.h>
36 #include <pulse/timeval.h>
37 #include <pulse/gccmacro.h>
39 #include <pulsecore/log.h>
40 #include <pulsecore/macro.h>
41 #include <pulsecore/thread.h>
42 #include <pulsecore/core-util.h>
43 #include <pulsecore/core-rtclock.h>
45 static int msec_lower, msec_upper;
47 static void work(void *p) PA_GCC_NORETURN;
49 static void work(void *p) {
51 pa_log_notice("CPU%i: Created thread.", PA_PTR_TO_UINT(p));
55 #ifdef HAVE_PTHREAD_SETAFFINITY_NP
60 CPU_SET((size_t) PA_PTR_TO_UINT(p), &mask);
61 pa_assert_se(pthread_setaffinity_np(pthread_self(), sizeof(mask), &mask) == 0);
66 struct timeval now, end;
69 pa_log_notice("CPU%i: Sleeping for 1s", PA_PTR_TO_UINT(p));
73 (uint64_t) ((((double) rand())*(double)(msec_upper-msec_lower)*PA_USEC_PER_MSEC)/RAND_MAX) +
74 (uint64_t) ((uint64_t) msec_lower*PA_USEC_PER_MSEC);
76 pa_log_notice("CPU%i: Freezing for %ims", PA_PTR_TO_UINT(p), (int) (usec/PA_USEC_PER_MSEC));
79 pa_timeval_add(&end, usec);
83 } while (pa_timeval_cmp(&now, &end) < 0);
87 int main(int argc, char*argv[]) {
90 pa_log_set_level(PA_LOG_INFO);
92 srand((unsigned) time(NULL));
95 msec_lower = atoi(argv[1]);
96 msec_upper = atoi(argv[2]);
97 } else if (argc >= 2) {
99 msec_upper = atoi(argv[1]);
105 pa_assert(msec_upper > 0);
106 pa_assert(msec_upper >= msec_lower);
108 pa_log_notice("Creating random latencies in the range of %ims to %ims.", msec_lower, msec_upper);
110 for (n = 1; n < pa_ncpus(); n++) {
111 pa_assert_se(pa_thread_new("rtstutter", work, PA_UINT_TO_PTR(n)));
114 work(PA_INT_TO_PTR(0));