X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Ftest_urcu_lfq.c;h=9d6535c78908c0e0cc6cb8da0ea14d13a520cc12;hp=cb50586ec3176ea6b4e3b100c8ba156d97295c38;hb=2953b501ab1dcf908d07de9b414a08397519f5b6;hpb=65fcc7e9957a1658327acd121c3d8c3b36f4a94e diff --git a/tests/test_urcu_lfq.c b/tests/test_urcu_lfq.c index cb50586..9d6535c 100644 --- a/tests/test_urcu_lfq.c +++ b/tests/test_urcu_lfq.c @@ -34,10 +34,11 @@ #include #include #include -#include #include #include +#include +#include "cpuset.h" #ifdef __linux__ #include @@ -76,9 +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(); } @@ -96,17 +97,12 @@ static int use_affinity = 0; pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER; -#ifndef HAVE_CPU_SET_T -typedef unsigned long cpu_set_t; -# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0) -# define CPU_SET(cpu, cpuset) do { *(cpuset) |= (1UL << (cpu)); } while(0) -#endif - 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; @@ -147,15 +143,20 @@ 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) @@ -163,7 +164,8 @@ 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(); @@ -175,56 +177,51 @@ 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 rcu_free_node(struct rcu_head *head) +static +void free_node_cb(struct rcu_head *head) { - struct cds_lfq_node_rcu *node = - caa_container_of(head, struct cds_lfq_node_rcu, rcu_head); + struct test *node = + caa_container_of(head, struct test, rcu); free(node); } -static void ref_release_node(struct urcu_ref *ref) -{ - struct cds_lfq_node_rcu *node = - caa_container_of(ref, struct cds_lfq_node_rcu, ref); - call_rcu(&node->rcu_head, 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()); + "dequeuer", (unsigned long) pthread_self(), + (unsigned long) gettid()); set_affinity(); @@ -236,53 +233,52 @@ 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) { - urcu_ref_put(&node->ref, ref_release_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(); 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); } -static void release_node(struct urcu_ref *ref) -{ - struct cds_lfq_node_rcu *node = caa_container_of(ref, struct cds_lfq_node_rcu, ref); - free(node); -} - 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) { - urcu_ref_put(&node->ref, release_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) @@ -370,13 +366,18 @@ int main(int argc, char **argv) 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); count_enqueuer = malloc(2 * sizeof(*count_enqueuer) * nr_enqueuers); count_dequeuer = malloc(2 * sizeof(*count_dequeuer) * nr_dequeuers); - cds_lfq_init_rcu(&q, ref_release_node); + 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; @@ -421,6 +422,8 @@ int main(int argc, char **argv) } test_end(&q, &end_dequeues); + err = cds_lfq_destroy_rcu(&q); + assert(!err); printf_verbose("total number of enqueues : %llu, dequeues %llu\n", tot_enqueues, tot_dequeues); @@ -443,6 +446,7 @@ 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);