#include <urcu.h>
#include <urcu/wfstack.h>
+/*
+ * External synchronization used.
+ */
+enum test_sync {
+ TEST_SYNC_NONE = 0,
+ TEST_SYNC_MUTEX,
+};
+
+static enum test_sync test_sync;
+
static volatile int test_go, test_stop;
static unsigned long rduration;
static int verbose_mode;
+static int test_pop, test_pop_all;
+
#define printf_verbose(fmt, args...) \
do { \
if (verbose_mode) \
- printf(fmt, args); \
+ printf(fmt, ## args); \
} while (0)
static unsigned int cpu_affinities[NR_CPUS];
static struct cds_wfs_stack s;
-void *thr_enqueuer(void *_count)
+static void *thr_enqueuer(void *_count)
{
unsigned long long *count = _count;
printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
- "enqueuer", pthread_self(), (unsigned long)gettid());
+ "enqueuer", (unsigned long) pthread_self(),
+ (unsigned long) gettid());
set_affinity();
count[1] = URCU_TLS(nr_successful_enqueues);
printf_verbose("enqueuer thread_end, thread id : %lx, tid %lu, "
"enqueues %llu successful_enqueues %llu\n",
- pthread_self(), (unsigned long)gettid(),
+ pthread_self(),
+ (unsigned long) gettid(),
URCU_TLS(nr_enqueues), URCU_TLS(nr_successful_enqueues));
return ((void*)1);
}
-void *thr_dequeuer(void *_count)
+static void do_test_pop(enum test_sync sync)
+{
+ struct cds_wfs_node *node;
+
+ if (sync == TEST_SYNC_MUTEX)
+ cds_wfs_pop_lock(&s);
+ node = __cds_wfs_pop_blocking(&s);
+ if (sync == TEST_SYNC_MUTEX)
+ cds_wfs_pop_unlock(&s);
+
+ if (node) {
+ free(node);
+ URCU_TLS(nr_successful_dequeues)++;
+ }
+ URCU_TLS(nr_dequeues)++;
+}
+
+static void do_test_pop_all(enum test_sync sync)
+{
+ struct cds_wfs_head *head;
+ struct cds_wfs_node *node, *n;
+
+ if (sync == TEST_SYNC_MUTEX)
+ cds_wfs_pop_lock(&s);
+ head = __cds_wfs_pop_all(&s);
+ if (sync == TEST_SYNC_MUTEX)
+ cds_wfs_pop_unlock(&s);
+
+ cds_wfs_for_each_blocking_safe(head, node, n) {
+ free(node);
+ URCU_TLS(nr_successful_dequeues)++;
+ URCU_TLS(nr_dequeues)++;
+ }
+}
+
+static void *thr_dequeuer(void *_count)
{
unsigned long long *count = _count;
+ unsigned int counter;
printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
- "dequeuer", pthread_self(), (unsigned long)gettid());
+ "dequeuer", (unsigned long) pthread_self(),
+ (unsigned long) gettid());
set_affinity();
}
cmm_smp_mb();
- for (;;) {
- struct cds_wfs_node *node = cds_wfs_pop_blocking(&s);
+ assert(test_pop || test_pop_all);
- if (node) {
- free(node);
- URCU_TLS(nr_successful_dequeues)++;
+ for (;;) {
+ if (test_pop && test_pop_all) {
+ if (counter & 1)
+ do_test_pop(test_sync);
+ else
+ do_test_pop_all(test_sync);
+ counter++;
+ } else {
+ if (test_pop)
+ do_test_pop(test_sync);
+ else
+ do_test_pop_all(test_sync);
}
- URCU_TLS(nr_dequeues)++;
if (caa_unlikely(!test_duration_dequeue()))
break;
if (caa_unlikely(rduration))
printf_verbose("dequeuer thread_end, thread id : %lx, tid %lu, "
"dequeues %llu, successful_dequeues %llu\n",
- pthread_self(), (unsigned long)gettid(),
+ pthread_self(),
+ (unsigned long) gettid(),
URCU_TLS(nr_dequeues), URCU_TLS(nr_successful_dequeues));
count[0] = URCU_TLS(nr_dequeues);
count[1] = URCU_TLS(nr_successful_dequeues);
return ((void*)2);
}
-void test_end(struct cds_wfs_stack *s, unsigned long long *nr_dequeues)
+static void test_end(struct cds_wfs_stack *s, unsigned long long *nr_dequeues)
{
struct cds_wfs_node *node;
} while (node);
}
-void show_usage(int argc, char **argv)
+static void show_usage(int argc, char **argv)
{
printf("Usage : %s nr_dequeuers nr_enqueuers duration (s)", argv[0]);
printf(" [-d delay] (enqueuer period (in loops))");
printf(" [-c duration] (dequeuer period (in loops))");
printf(" [-v] (verbose output)");
printf(" [-a cpu#] [-a cpu#]... (affinity)");
+ printf(" [-p] (test pop)");
+ printf(" [-P] (test pop_all, enabled by default)");
+ printf(" [-M] (use mutex external synchronization)");
+ printf(" Note: default: no external synchronization used.");
printf("\n");
}
case 'v':
verbose_mode = 1;
break;
+ case 'p':
+ test_pop = 1;
+ break;
+ case 'P':
+ test_pop_all = 1;
+ break;
+ case 'M':
+ test_sync = TEST_SYNC_MUTEX;
+ break;
}
}
+ /* activate pop_all test by default */
+ if (!test_pop && !test_pop_all)
+ test_pop_all = 1;
+
printf_verbose("running test for %lu seconds, %u enqueuers, "
"%u dequeuers.\n",
duration, nr_enqueuers, nr_dequeuers);
+ if (test_pop)
+ printf_verbose("pop test activated.\n");
+ if (test_pop_all)
+ printf_verbose("pop_all test activated.\n");
+ if (test_sync == TEST_SYNC_MUTEX)
+ printf_verbose("External sync: mutex.\n");
+ else
+ printf_verbose("External sync: none.\n");
printf_verbose("Writer delay : %lu loops.\n", rduration);
printf_verbose("Reader duration : %lu loops.\n", wdelay);
printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
- "main", pthread_self(), (unsigned long)gettid());
+ "main", (unsigned long) pthread_self(),
+ (unsigned long) gettid());
tid_enqueuer = malloc(sizeof(*tid_enqueuer) * nr_enqueuers);
tid_dequeuer = malloc(sizeof(*tid_dequeuer) * nr_dequeuers);