X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Ftest_urcu_lfs.c;h=b2a33712a5aefa488d69bfc746291c72471cd463;hp=9af846d1c782a724caeb41306e39aa29352ac0c4;hb=db017c417c48ec966c30a3a7a94291e227c4878a;hpb=cb8818f01ed341f21d9b6467365a66fda3fc6856 diff --git a/tests/test_urcu_lfs.c b/tests/test_urcu_lfs.c index 9af846d..b2a3371 100644 --- a/tests/test_urcu_lfs.c +++ b/tests/test_urcu_lfs.c @@ -34,40 +34,32 @@ #include #include #include -#include #include #include #include - -#ifdef __linux__ -#include -#endif +#include "cpuset.h" +#include "thread-id.h" /* hardcoded number of CPUs */ #define NR_CPUS 16384 -#if defined(_syscall0) -_syscall0(pid_t, gettid) -#elif defined(__NR_gettid) -static inline pid_t gettid(void) -{ - return syscall(__NR_gettid); -} -#else -#warning "use pid as tid" -static inline pid_t gettid(void) -{ - return getpid(); -} -#endif - #ifndef DYNAMIC_LINK_TEST #define _LGPL_SOURCE #endif #include #include +/* + * External synchronization used. + */ +enum test_sync { + TEST_SYNC_NONE = 0, + TEST_SYNC_RCU, +}; + +static enum test_sync test_sync; + static volatile int test_go, test_stop; static unsigned long rduration; @@ -85,10 +77,12 @@ static inline void loop_sleep(unsigned long loops) 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]; @@ -97,12 +91,6 @@ 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 @@ -165,12 +153,12 @@ struct test { static struct cds_lfs_stack s; -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()); + printf_verbose("thread_begin %s, tid %lu\n", + "enqueuer", urcu_get_thread_id()); set_affinity(); @@ -201,10 +189,11 @@ fail: 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(), - URCU_TLS(nr_enqueues), URCU_TLS(nr_successful_enqueues)); + printf_verbose("enqueuer thread_end, tid %lu, " + "enqueues %llu successful_enqueues %llu\n", + urcu_get_thread_id(), + URCU_TLS(nr_enqueues), + URCU_TLS(nr_successful_enqueues)); return ((void*)1); } @@ -217,12 +206,59 @@ void free_node_cb(struct rcu_head *head) free(node); } -void *thr_dequeuer(void *_count) +static +void do_test_pop(enum test_sync sync) +{ + struct cds_lfs_node *snode; + + if (sync == TEST_SYNC_RCU) + rcu_read_lock(); + snode = __cds_lfs_pop(&s); + if (sync == TEST_SYNC_RCU) + rcu_read_unlock(); + if (snode) { + struct test *node; + + node = caa_container_of(snode, + struct test, list); + if (sync == TEST_SYNC_RCU) + call_rcu(&node->rcu, free_node_cb); + else + free(node); + URCU_TLS(nr_successful_dequeues)++; + } + URCU_TLS(nr_dequeues)++; +} + +static +void do_test_pop_all(enum test_sync sync) +{ + struct cds_lfs_node *snode; + struct cds_lfs_head *head; + struct cds_lfs_node *n; + + head = __cds_lfs_pop_all(&s); + cds_lfs_for_each_safe(head, snode, n) { + struct test *node; + + node = caa_container_of(snode, struct test, list); + if (sync == TEST_SYNC_RCU) + call_rcu(&node->rcu, free_node_cb); + else + 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 = 0; - printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", - "dequeuer", pthread_self(), (unsigned long)gettid()); + printf_verbose("thread_begin %s, tid %lu\n", + "dequeuer", urcu_get_thread_id()); set_affinity(); @@ -233,20 +269,23 @@ void *thr_dequeuer(void *_count) } cmm_smp_mb(); - for (;;) { - struct cds_lfs_node *snode; - - rcu_read_lock(); - snode = cds_lfs_pop(&s); - rcu_read_unlock(); - if (snode) { - struct test *node; + assert(test_pop || test_pop_all); - node = caa_container_of(snode, struct test, list); - call_rcu(&node->rcu, free_node_cb); - URCU_TLS(nr_successful_dequeues)++; + for (;;) { + if (test_pop && test_pop_all) { + /* both pop and 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); } - URCU_TLS(nr_dequeues)++; + if (caa_unlikely(!test_duration_dequeue())) break; if (caa_unlikely(rduration)) @@ -255,21 +294,22 @@ void *thr_dequeuer(void *_count) rcu_unregister_thread(); - printf_verbose("dequeuer thread_end, thread id : %lx, tid %lu, " - "dequeues %llu, successful_dequeues %llu\n", - pthread_self(), (unsigned long)gettid(), - URCU_TLS(nr_dequeues), URCU_TLS(nr_successful_dequeues)); + printf_verbose("dequeuer thread_end, tid %lu, " + "dequeues %llu, successful_dequeues %llu\n", + urcu_get_thread_id(), + 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_lfs_stack *s, unsigned long long *nr_dequeues) +static void test_end(struct cds_lfs_stack *s, unsigned long long *nr_dequeues) { struct cds_lfs_node *snode; do { - snode = cds_lfs_pop(s); + snode = __cds_lfs_pop(s); if (snode) { struct test *node; @@ -280,13 +320,19 @@ void test_end(struct cds_lfs_stack *s, unsigned long long *nr_dequeues) } while (snode); } -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("Usage : %s nr_dequeuers nr_enqueuers duration (s) \n", + argv[0]); + printf("OPTIONS:\n"); + printf(" [-d delay] (enqueuer period (in loops))\n"); + printf(" [-c duration] (dequeuer period (in loops))\n"); + printf(" [-v] (verbose output)\n"); + printf(" [-a cpu#] [-a cpu#]... (affinity)\n"); + printf(" [-p] (test pop)\n"); + printf(" [-P] (test pop_all, enabled by default)\n"); + printf(" [-R] (use RCU external synchronization)\n"); + printf(" Note: default: no external synchronization used.\n"); printf("\n"); } @@ -356,16 +402,37 @@ 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 'R': + test_sync = TEST_SYNC_RCU; + 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_RCU) + printf_verbose("External sync: RCU.\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()); + printf_verbose("thread %-6s, tid %lu\n", + "main", urcu_get_thread_id()); tid_enqueuer = malloc(sizeof(*tid_enqueuer) * nr_enqueuers); tid_dequeuer = malloc(sizeof(*tid_dequeuer) * nr_dequeuers);