gstreamer/tests/memchunk/gmemchunktest.c

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#include <gst/gst.h>
#include <string.h> /* strerror */
#define MAX_THREADS 100
static GMemChunk *_chunks;
static GMutex *_lock;
static gint num_allocs;
static gint num_threads;
static gpointer
alloc_chunk (void)
{
gpointer ret;
g_mutex_lock (_lock);
ret = g_mem_chunk_alloc (_chunks);
g_mutex_unlock (_lock);
return ret;
}
static void
free_chunk (gpointer chunk)
{
g_mutex_lock (_lock);
g_mem_chunk_free (_chunks, chunk);
g_mutex_unlock (_lock);
}
void*
run_test (void *threadid)
{
gint i;
gpointer chunk;
sleep(1);
for (i = 0; i<num_allocs; i++) {
chunk = alloc_chunk ();
free_chunk (chunk);
}
pthread_exit(NULL);
}
gint
main (gint argc, gchar *argv[])
{
pthread_t threads[MAX_THREADS];
int rc, t;
gst_init (&argc, &argv);
if (argc != 3) {
g_print ("usage: %s <num_threads> <num_allocs>\n", argv[0]);
exit (-1);
}
num_threads = atoi (argv[1]);
num_allocs = atoi (argv[2]);
_chunks = g_mem_chunk_new ("test", 32, 32 * 16, G_ALLOC_AND_FREE);
_lock = g_mutex_new ();
for(t=0; t < num_threads; t++) {
rc = pthread_create (&threads[t], NULL, run_test, (void *)t);
if (rc) {
printf ("ERROR: return code from pthread_create() is %d\n", rc);
printf ("Code %d= %s\n", rc, strerror(rc));
exit (-1);
}
}
printf ("main(): Created %d threads.\n", t);
pthread_exit (NULL);
g_mem_chunk_info();
}