X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=tests%2Ftest_urcu_wfcq.c;h=f90fc14baf52bc00229d9e9672e3ce4953d86f86;hb=23773356a9fd12bf12627df437d0c7bd20e8ef01;hp=3158d2d3d0a5fa89257edbd6722e3b8130ef778d;hpb=95bc7fb90c36ee10dc171a23e8783eff30072b7b;p=urcu.git diff --git a/tests/test_urcu_wfcq.c b/tests/test_urcu_wfcq.c index 3158d2d..f90fc14 100644 --- a/tests/test_urcu_wfcq.c +++ b/tests/test_urcu_wfcq.c @@ -68,6 +68,13 @@ static inline pid_t gettid(void) #include #include +enum test_sync { + TEST_SYNC_MUTEX = 0, + TEST_SYNC_NONE, +}; + +static enum test_sync test_sync; + static volatile int test_go, test_stop; static unsigned long rduration; @@ -85,10 +92,12 @@ static inline void loop_sleep(unsigned long loops) static int verbose_mode; +static int test_dequeue, test_splice; + #define printf_verbose(fmt, args...) \ do { \ if (verbose_mode) \ - printf(fmt, args); \ + printf(fmt, ## args); \ } while (0) static unsigned int cpu_affinities[NR_CPUS]; @@ -161,12 +170,13 @@ static unsigned int nr_dequeuers; static struct cds_wfcq_head __attribute__((aligned(CAA_CACHE_LINE_SIZE))) head; static struct cds_wfcq_tail __attribute__((aligned(CAA_CACHE_LINE_SIZE))) tail; -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(); @@ -195,18 +205,59 @@ fail: 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_dequeue(enum test_sync sync) +{ + struct cds_wfcq_node *node; + + if (sync == TEST_SYNC_MUTEX) + node = cds_wfcq_dequeue_blocking(&head, &tail); + else + node = __cds_wfcq_dequeue_blocking(&head, &tail); + + if (node) { + free(node); + URCU_TLS(nr_successful_dequeues)++; + } + URCU_TLS(nr_dequeues)++; +} + +static void do_test_splice(enum test_sync sync) +{ + struct cds_wfcq_head tmp_head; + struct cds_wfcq_tail tmp_tail; + struct cds_wfcq_node *node, *n; + + cds_wfcq_init(&tmp_head, &tmp_tail); + + if (sync == TEST_SYNC_MUTEX) + cds_wfcq_splice_blocking(&tmp_head, &tmp_tail, + &head, &tail); + else + __cds_wfcq_splice_blocking(&tmp_head, &tmp_tail, + &head, &tail); + + __cds_wfcq_for_each_blocking_safe(&tmp_head, &tmp_tail, 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(); @@ -216,15 +267,18 @@ void *thr_dequeuer(void *_count) cmm_smp_mb(); for (;;) { - struct cds_wfcq_node *node = - cds_wfcq_dequeue_blocking(&head, &tail); - - if (node) { - free(node); - URCU_TLS(nr_successful_dequeues)++; + if (test_dequeue && test_splice) { + if (counter & 1) + do_test_dequeue(test_sync); + else + do_test_splice(test_sync); + counter++; + } else { + if (test_dequeue) + do_test_dequeue(test_sync); + else + do_test_splice(test_sync); } - - URCU_TLS(nr_dequeues)++; if (caa_unlikely(!test_duration_dequeue())) break; if (caa_unlikely(rduration)) @@ -233,14 +287,15 @@ void *thr_dequeuer(void *_count) 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(unsigned long long *nr_dequeues) +static void test_end(unsigned long long *nr_dequeues) { struct cds_wfcq_node *node; @@ -253,13 +308,18 @@ void test_end(unsigned long long *nr_dequeues) } 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(" [-q] (test dequeue)"); + printf(" [-s] (test splice, enabled by default)"); + printf(" [-M] (use mutex external synchronization)"); + printf(" [-0] (use no external synchronization)"); + printf(" Note: default: mutex external synchronization used."); printf("\n"); } @@ -329,16 +389,41 @@ int main(int argc, char **argv) case 'v': verbose_mode = 1; break; + case 'q': + test_dequeue = 1; + break; + case 's': + test_splice = 1; + break; + case 'M': + test_sync = TEST_SYNC_MUTEX; + break; + case '0': + test_sync = TEST_SYNC_NONE; + break; } } + /* activate splice test by default */ + if (!test_dequeue && !test_splice) + test_splice = 1; + printf_verbose("running test for %lu seconds, %u enqueuers, " "%u dequeuers.\n", duration, nr_enqueuers, nr_dequeuers); + if (test_dequeue) + printf_verbose("dequeue test activated.\n"); + else + printf_verbose("splice 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);