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authorLennart Poettering <lennart@poettering.net>2008-05-15 23:34:41 +0000
committerLennart Poettering <lennart@poettering.net>2008-05-15 23:34:41 +0000
commit045c1d602dcba57868845ba3270510593c39480f (patch)
treeb3d61f180e6fa40f97a80aa3e46d7c910ed7c2a6 /src/tests/rtstutter.c
parent91f092eadcc5e9075e04ae42df11de28ef5047a8 (diff)
merge glitch-free branch back into trunk
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2445 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/tests/rtstutter.c')
-rw-r--r--src/tests/rtstutter.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/src/tests/rtstutter.c b/src/tests/rtstutter.c
new file mode 100644
index 00000000..39dfc5d3
--- /dev/null
+++ b/src/tests/rtstutter.c
@@ -0,0 +1,119 @@
+/* $Id$ */
+
+/***
+ 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 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include <sched.h>
+#include <inttypes.h>
+#include <string.h>
+#include <pthread.h>
+
+#include <pulse/timeval.h>
+#include <pulse/gccmacro.h>
+
+#include <pulsecore/log.h>
+#include <pulsecore/macro.h>
+
+static int msec_lower, msec_upper;
+
+static void* work(void *p) PA_GCC_NORETURN;
+
+static void* work(void *p) {
+ cpu_set_t mask;
+ struct sched_param param;
+
+ pa_log_notice("CPU%i: Created thread.", PA_PTR_TO_INT(p));
+
+ memset(&param, 0, sizeof(param));
+ param.sched_priority = 12;
+ pa_assert_se(pthread_setschedparam(pthread_self(), SCHED_FIFO, &param) == 0);
+
+ CPU_ZERO(&mask);
+ CPU_SET(PA_PTR_TO_INT(p), &mask);
+ pa_assert_se(pthread_setaffinity_np(pthread_self(), sizeof(mask), &mask) == 0);
+
+ for (;;) {
+ struct timespec now, end;
+ uint64_t nsec;
+
+ pa_log_notice("CPU%i: Sleeping for 1s", PA_PTR_TO_INT(p));
+ sleep(1);
+
+ pa_assert_se(clock_gettime(CLOCK_REALTIME, &end) == 0);
+
+ nsec =
+ (uint64_t) ((((double) rand())*(msec_upper-msec_lower)*PA_NSEC_PER_MSEC)/RAND_MAX) +
+ (uint64_t) (msec_lower*PA_NSEC_PER_MSEC);
+
+ pa_log_notice("CPU%i: Freezing for %ims", PA_PTR_TO_INT(p), (int) (nsec/PA_NSEC_PER_MSEC));
+
+ end.tv_sec += nsec / PA_NSEC_PER_SEC;
+ end.tv_nsec += nsec % PA_NSEC_PER_SEC;
+
+ while (end.tv_nsec > PA_NSEC_PER_SEC) {
+ end.tv_sec++;
+ end.tv_nsec -= PA_NSEC_PER_SEC;
+ }
+
+ do {
+ pa_assert_se(clock_gettime(CLOCK_REALTIME, &now) == 0);
+ } while (now.tv_sec < end.tv_sec ||
+ (now.tv_sec == end.tv_sec && now.tv_nsec < end.tv_nsec));
+ }
+}
+
+int main(int argc, char*argv[]) {
+ int n;
+
+ srand(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 < sysconf(_SC_NPROCESSORS_CONF); n++) {
+ pthread_t t;
+ pa_assert_se(pthread_create(&t, NULL, work, PA_INT_TO_PTR(n)) == 0);
+ }
+
+ work(PA_INT_TO_PTR(0));
+
+ return 0;
+}