1 files changed, 128 insertions, 0 deletions
diff --git a/src/tests/rtstutter.c b/src/tests/rtstutter.c
new file mode 100644
index 0000000..56b5146
--- /dev/null
+++ b/src/tests/rtstutter.c
@@ -0,0 +1,128 @@
+/***
+  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;
+}