X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Ftest_urcu_lfq.c;h=6b2bf051da80f5af9887a80797ee57fa8fca28d0;hp=b61a7d4815788af2bcd9e197dc319a8eb053791a;hb=95bc7fb90c36ee10dc171a23e8783eff30072b7b;hpb=e0c7c3eb892ecbba34e1ff8035bcdd55b502b37a diff --git a/tests/test_urcu_lfq.c b/tests/test_urcu_lfq.c index b61a7d4..6b2bf05 100644 --- a/tests/test_urcu_lfq.c +++ b/tests/test_urcu_lfq.c @@ -38,6 +38,7 @@ #include #include +#include #ifdef __linux__ #include @@ -66,7 +67,6 @@ static inline pid_t gettid(void) #endif #include #include -#include static volatile int test_go, test_stop; @@ -77,9 +77,9 @@ 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(); } @@ -105,9 +105,10 @@ 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; @@ -148,15 +149,20 @@ 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; +struct test { + struct cds_lfq_node_rcu list; + struct rcu_head rcu; +}; + static struct cds_lfq_queue_rcu q; void *thr_enqueuer(void *_count) @@ -176,50 +182,52 @@ void *thr_enqueuer(void *_count) cmm_smp_mb(); for (;;) { - struct cds_lfq_node_rcu *node = malloc(sizeof(*node)); + struct test *node = malloc(sizeof(*node)); if (!node) goto fail; - cds_lfq_node_init_rcu(node); + cds_lfq_node_init_rcu(&node->list); rcu_read_lock(); - cds_lfq_enqueue_rcu(&q, node); + cds_lfq_enqueue_rcu(&q, &node->list); rcu_read_unlock(); - 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; } rcu_unregister_thread(); - 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); } +static +void free_node_cb(struct rcu_head *head) +{ + struct test *node = + caa_container_of(head, struct test, rcu); + free(node); +} + void *thr_dequeuer(void *_count) { unsigned long long *count = _count; - int ret; printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", "dequeuer", pthread_self(), (unsigned long)gettid()); set_affinity(); - ret = rcu_defer_register_thread(); - if (ret) { - printf("Error in rcu_defer_register_thread\n"); - exit(-1); - } rcu_register_thread(); while (!test_go) @@ -228,48 +236,51 @@ void *thr_dequeuer(void *_count) cmm_smp_mb(); for (;;) { - struct cds_lfq_node_rcu *node; + struct cds_lfq_node_rcu *qnode; rcu_read_lock(); - node = cds_lfq_dequeue_rcu(&q); + qnode = cds_lfq_dequeue_rcu(&q); rcu_read_unlock(); - if (node) { - defer_rcu(free, node); - nr_successful_dequeues++; + if (qnode) { + struct test *node; + + node = caa_container_of(qnode, struct test, list); + call_rcu(&node->rcu, free_node_cb); + URCU_TLS(nr_successful_dequeues)++; } - nr_dequeues++; - if (unlikely(!test_duration_dequeue())) + URCU_TLS(nr_dequeues)++; + if (caa_unlikely(!test_duration_dequeue())) break; - if (unlikely(rduration)) + if (caa_unlikely(rduration)) loop_sleep(rduration); } rcu_unregister_thread(); - rcu_defer_unregister_thread(); 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_lfq_queue_rcu *q, unsigned long long *nr_dequeues) { - struct cds_lfq_node_rcu *node; + struct cds_lfq_node_rcu *snode; do { - rcu_read_lock(); - node = cds_lfq_dequeue_rcu(q); - rcu_read_unlock(); - if (node) { + snode = cds_lfq_dequeue_rcu(q); + if (snode) { + struct test *node; + + node = caa_container_of(snode, struct test, list); free(node); /* no more concurrent access */ (*nr_dequeues)++; } - } while (node); + } while (snode); } void show_usage(int argc, char **argv) @@ -364,6 +375,10 @@ int main(int argc, char **argv) count_enqueuer = malloc(2 * sizeof(*count_enqueuer) * nr_enqueuers); count_dequeuer = malloc(2 * sizeof(*count_dequeuer) * nr_dequeuers); cds_lfq_init_rcu(&q, call_rcu); + err = create_all_cpu_call_rcu_data(0); + if (err) { + printf("Per-CPU call_rcu() worker threads unavailable. Using default global worker thread.\n"); + } next_aff = 0; @@ -432,6 +447,7 @@ int main(int argc, char **argv) tot_successful_enqueues, tot_successful_dequeues + end_dequeues); + free_all_cpu_call_rcu_data(); free(count_enqueuer); free(count_dequeuer); free(tid_enqueuer);