#include <errno.h>
#include <urcu/arch.h>
+#include <urcu/tls-compat.h>
#ifdef __linux__
#include <syscall.h>
#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;
/* read-side C.S. duration, in loops */
static unsigned long wdelay;
-static inline void loop_sleep(unsigned long l)
+static inline void loop_sleep(unsigned long loops)
{
- while(l-- != 0)
+ while (loops-- != 0)
caa_cpu_relax();
}
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 void set_affinity(void)
{
+#if HAVE_SCHED_SETAFFINITY
cpu_set_t mask;
- int cpu;
- int ret;
+ int cpu, ret;
+#endif /* HAVE_SCHED_SETAFFINITY */
if (!use_affinity)
return;
return !test_stop;
}
-static unsigned long long __thread nr_dequeues;
-static unsigned long long __thread nr_enqueues;
+static DEFINE_URCU_TLS(unsigned long long, nr_dequeues);
+static DEFINE_URCU_TLS(unsigned long long, nr_enqueues);
-static unsigned long long __thread nr_successful_dequeues;
-static unsigned long long __thread nr_successful_enqueues;
+static DEFINE_URCU_TLS(unsigned long long, nr_successful_dequeues);
+static DEFINE_URCU_TLS(unsigned long long, nr_successful_enqueues);
static unsigned int nr_enqueuers;
static unsigned int nr_dequeuers;
static struct cds_wfs_stack s;
-void *thr_enqueuer(void *_count)
+static void *thr_enqueuer(void *_count)
{
unsigned long long *count = _count;
goto fail;
cds_wfs_node_init(node);
cds_wfs_push(&s, node);
- nr_successful_enqueues++;
+ URCU_TLS(nr_successful_enqueues)++;
if (caa_unlikely(wdelay))
loop_sleep(wdelay);
fail:
- nr_enqueues++;
+ URCU_TLS(nr_enqueues)++;
if (caa_unlikely(!test_duration_enqueue()))
break;
}
- count[0] = nr_enqueues;
- count[1] = nr_successful_enqueues;
+ count[0] = URCU_TLS(nr_enqueues);
+ 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(), nr_enqueues,
- nr_successful_enqueues);
+ 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());
}
cmm_smp_mb();
- for (;;) {
- struct cds_wfs_node *node = cds_wfs_pop_blocking(&s);
+ assert(test_pop || test_pop_all);
- if (node) {
- free(node);
- 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);
}
- 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(), nr_dequeues,
- nr_successful_dequeues);
- count[0] = nr_dequeues;
- count[1] = nr_successful_dequeues;
+ 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",
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