X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Ftest_urcu_wfs.c;h=84e50a00b5751ac8cad89d782f852e7f44207c30;hp=6d419ca189d404bae46443a2afc088e7e2365a65;hb=98fbc848f22e74b85d3c98bcf626ba7fd906a6e1;hpb=bc2433a9853a945a825c244e9ccfe341b73b2ceb diff --git a/tests/test_urcu_wfs.c b/tests/test_urcu_wfs.c index 6d419ca..84e50a0 100644 --- a/tests/test_urcu_wfs.c +++ b/tests/test_urcu_wfs.c @@ -38,6 +38,7 @@ #include #include +#include #ifdef __linux__ #include @@ -67,6 +68,16 @@ static inline pid_t gettid(void) #include #include +/* + * 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; @@ -76,18 +87,20 @@ static unsigned long duration; /* 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]; @@ -104,9 +117,10 @@ typedef unsigned long cpu_set_t; 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; @@ -147,18 +161,18 @@ static int test_duration_enqueue(void) 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; @@ -178,29 +192,65 @@ void *thr_enqueuer(void *_count) goto fail; cds_wfs_node_init(node); cds_wfs_push(&s, node); - nr_successful_enqueues++; + URCU_TLS(nr_successful_enqueues)++; - if (unlikely(wdelay)) + if (caa_unlikely(wdelay)) loop_sleep(wdelay); fail: - nr_enqueues++; - if (unlikely(!test_duration_enqueue())) + 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()); @@ -212,31 +262,38 @@ void *thr_dequeuer(void *_count) } 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 (unlikely(!test_duration_dequeue())) + if (caa_unlikely(!test_duration_dequeue())) break; - if (unlikely(rduration)) + if (caa_unlikely(rduration)) loop_sleep(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; @@ -249,13 +306,17 @@ void test_end(struct cds_wfs_stack *s, 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(" [-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"); } @@ -325,12 +386,33 @@ int main(int argc, char **argv) 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",