X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Ftest_urcu_wfcq.c;h=f04c9bd8b6874424bf830f722787c6e531e415eb;hp=ccd5cf169436171baadd50d46ce261892764666b;hb=9aa14175d93952464fa8ec15df54e2656c349c0b;hpb=cf9451dc7ee26459a84772338cc1470903657407 diff --git a/tests/test_urcu_wfcq.c b/tests/test_urcu_wfcq.c index ccd5cf1..f04c9bd 100644 --- a/tests/test_urcu_wfcq.c +++ b/tests/test_urcu_wfcq.c @@ -34,47 +34,31 @@ #include #include #include -#include #include #include #include - -#ifdef __linux__ -#include -#endif +#include +#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 enum test_sync { - TEST_SYNC_MUTEX = 0, - TEST_SYNC_NONE, + TEST_SYNC_NONE = 0, + TEST_SYNC_MUTEX, }; static enum test_sync test_sync; +static int test_force_sync; + static volatile int test_go, test_stop_enqueue, test_stop_dequeue; static unsigned long rduration; @@ -107,12 +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 @@ -166,6 +144,7 @@ static DEFINE_URCU_TLS(unsigned long long, nr_successful_dequeues); static DEFINE_URCU_TLS(unsigned long long, nr_successful_enqueues); static DEFINE_URCU_TLS(unsigned long long, nr_empty_dest_enqueues); static DEFINE_URCU_TLS(unsigned long long, nr_splice); +static DEFINE_URCU_TLS(unsigned long long, nr_dequeue_last); static unsigned int nr_enqueuers; static unsigned int nr_dequeuers; @@ -178,9 +157,8 @@ static void *thr_enqueuer(void *_count) unsigned long long *count = _count; bool was_nonempty; - printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", - "enqueuer", (unsigned long) pthread_self(), - (unsigned long) gettid()); + printf_verbose("thread_begin %s, tid %lu\n", + "enqueuer", urcu_get_thread_id()); set_affinity(); @@ -211,14 +189,13 @@ fail: count[0] = URCU_TLS(nr_enqueues); count[1] = URCU_TLS(nr_successful_enqueues); count[2] = URCU_TLS(nr_empty_dest_enqueues); - printf_verbose("enqueuer thread_end, thread id : %lx, tid %lu, " - "enqueues %llu successful_enqueues %llu, " - "empty_dest_enqueues %llu\n", - pthread_self(), - (unsigned long) gettid(), - URCU_TLS(nr_enqueues), - URCU_TLS(nr_successful_enqueues), - URCU_TLS(nr_empty_dest_enqueues)); + printf_verbose("enqueuer thread_end, tid %lu, " + "enqueues %llu successful_enqueues %llu, " + "empty_dest_enqueues %llu\n", + urcu_get_thread_id(), + URCU_TLS(nr_enqueues), + URCU_TLS(nr_successful_enqueues), + URCU_TLS(nr_empty_dest_enqueues)); return ((void*)1); } @@ -226,11 +203,17 @@ fail: static void do_test_dequeue(enum test_sync sync) { struct cds_wfcq_node *node; + int state; if (sync == TEST_SYNC_MUTEX) - node = cds_wfcq_dequeue_blocking(&head, &tail); + node = cds_wfcq_dequeue_with_state_blocking(&head, &tail, + &state); else - node = __cds_wfcq_dequeue_blocking(&head, &tail); + node = __cds_wfcq_dequeue_with_state_blocking(&head, &tail, + &state); + + if (state & CDS_WFCQ_STATE_LAST) + URCU_TLS(nr_dequeue_last)++; if (node) { free(node); @@ -261,6 +244,7 @@ static void do_test_splice(enum test_sync sync) break; case CDS_WFCQ_RET_DEST_EMPTY: URCU_TLS(nr_splice)++; + URCU_TLS(nr_dequeue_last)++; /* ok */ break; case CDS_WFCQ_RET_DEST_NON_EMPTY: @@ -281,11 +265,10 @@ static void do_test_splice(enum test_sync sync) static void *thr_dequeuer(void *_count) { unsigned long long *count = _count; - unsigned int counter; + unsigned int counter = 0; - printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", - "dequeuer", (unsigned long) pthread_self(), - (unsigned long) gettid()); + printf_verbose("thread_begin %s, tid %lu\n", + "dequeuer", urcu_get_thread_id()); set_affinity(); @@ -313,26 +296,31 @@ static void *thr_dequeuer(void *_count) loop_sleep(rduration); } - printf_verbose("dequeuer thread_end, thread id : %lx, tid %lu, " - "dequeues %llu, successful_dequeues %llu, " - "nr_splice %llu\n", - pthread_self(), - (unsigned long) gettid(), - URCU_TLS(nr_dequeues), URCU_TLS(nr_successful_dequeues), - URCU_TLS(nr_splice)); + printf_verbose("dequeuer thread_end, tid %lu, " + "dequeues %llu, successful_dequeues %llu, " + "nr_splice %llu\n", + urcu_get_thread_id(), + URCU_TLS(nr_dequeues), URCU_TLS(nr_successful_dequeues), + URCU_TLS(nr_splice)); count[0] = URCU_TLS(nr_dequeues); count[1] = URCU_TLS(nr_successful_dequeues); count[2] = URCU_TLS(nr_splice); + count[3] = URCU_TLS(nr_dequeue_last); return ((void*)2); } -static void test_end(unsigned long long *nr_dequeues) +static void test_end(unsigned long long *nr_dequeues, + unsigned long long *nr_dequeue_last) { struct cds_wfcq_node *node; + int state; do { - node = cds_wfcq_dequeue_blocking(&head, &tail); + node = cds_wfcq_dequeue_with_state_blocking(&head, &tail, + &state); if (node) { + if (state & CDS_WFCQ_STATE_LAST) + (*nr_dequeue_last)++; free(node); (*nr_dequeues)++; } @@ -341,17 +329,19 @@ static void test_end(unsigned long long *nr_dequeues) 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(" [-w] Wait for dequeuer to empty queue"); + 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(" [-q] (test dequeue)\n"); + printf(" [-s] (test splice, enabled by default)\n"); + printf(" [-M] (use mutex external synchronization)\n"); + printf(" Note: default: no external synchronization used.\n"); + printf(" [-f] (force user-provided synchronization)\n"); + printf(" [-w] Wait for dequeuer to empty queue\n"); printf("\n"); } @@ -365,7 +355,7 @@ int main(int argc, char **argv) unsigned long long tot_successful_enqueues = 0, tot_successful_dequeues = 0, tot_empty_dest_enqueues = 0, - tot_splice = 0; + tot_splice = 0, tot_dequeue_last = 0; unsigned long long end_dequeues = 0; int i, a, retval = 0; @@ -432,12 +422,12 @@ int main(int argc, char **argv) case 'M': test_sync = TEST_SYNC_MUTEX; break; - case '0': - test_sync = TEST_SYNC_NONE; - break; case 'w': test_wait_empty = 1; break; + case 'f': + test_force_sync = 1; + break; } } @@ -445,6 +435,17 @@ int main(int argc, char **argv) if (!test_dequeue && !test_splice) test_splice = 1; + if (test_sync == TEST_SYNC_NONE && nr_dequeuers > 1 && test_dequeue) { + if (test_force_sync) { + fprintf(stderr, "[WARNING] Using dequeue concurrently " + "with other dequeue or splice without external " + "synchronization. Expect run-time failure.\n"); + } else { + printf("Enforcing mutex synchronization\n"); + test_sync = TEST_SYNC_MUTEX; + } + } + printf_verbose("running test for %lu seconds, %u enqueuers, " "%u dequeuers.\n", duration, nr_enqueuers, nr_dequeuers); @@ -460,14 +461,13 @@ int main(int argc, char **argv) printf_verbose("Wait for dequeuers to empty queue.\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", (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(3 * sizeof(*count_enqueuer) * nr_enqueuers); - count_dequeuer = malloc(3 * sizeof(*count_dequeuer) * nr_dequeuers); + printf_verbose("thread %-6s, tid %lu\n", + "main", urcu_get_thread_id()); + + tid_enqueuer = calloc(nr_enqueuers, sizeof(*tid_enqueuer)); + tid_dequeuer = calloc(nr_dequeuers, sizeof(*tid_dequeuer)); + count_enqueuer = calloc(nr_enqueuers, 3 * sizeof(*count_enqueuer)); + count_dequeuer = calloc(nr_dequeuers, 4 * sizeof(*count_dequeuer)); cds_wfcq_init(&head, &tail); next_aff = 0; @@ -480,7 +480,7 @@ int main(int argc, char **argv) } for (i = 0; i < nr_dequeuers; i++) { err = pthread_create(&tid_dequeuer[i], NULL, thr_dequeuer, - &count_dequeuer[3 * i]); + &count_dequeuer[4 * i]); if (err != 0) exit(1); } @@ -520,34 +520,37 @@ int main(int argc, char **argv) err = pthread_join(tid_dequeuer[i], &tret); if (err != 0) exit(1); - tot_dequeues += count_dequeuer[3 * i]; - tot_successful_dequeues += count_dequeuer[3 * i + 1]; - tot_splice += count_dequeuer[3 * i + 2]; + tot_dequeues += count_dequeuer[4 * i]; + tot_successful_dequeues += count_dequeuer[4 * i + 1]; + tot_splice += count_dequeuer[4 * i + 2]; + tot_dequeue_last += count_dequeuer[4 * i + 3]; } - test_end(&end_dequeues); + test_end(&end_dequeues, &tot_dequeue_last); printf_verbose("total number of enqueues : %llu, dequeues %llu\n", tot_enqueues, tot_dequeues); printf_verbose("total number of successful enqueues : %llu, " "enqueues to empty dest : %llu, " - "successful dequeues %llu, ", - "splice : %llu\n", + "successful dequeues %llu, " + "splice : %llu, dequeue_last : %llu\n", tot_successful_enqueues, tot_empty_dest_enqueues, tot_successful_dequeues, - tot_splice); + tot_splice, tot_dequeue_last); printf("SUMMARY %-25s testdur %4lu nr_enqueuers %3u wdelay %6lu " "nr_dequeuers %3u " "rdur %6lu nr_enqueues %12llu nr_dequeues %12llu " "successful enqueues %12llu enqueues to empty dest %12llu " "successful dequeues %12llu splice %12llu " + "dequeue_last %llu " "end_dequeues %llu nr_ops %12llu\n", argv[0], duration, nr_enqueuers, wdelay, nr_dequeuers, rduration, tot_enqueues, tot_dequeues, tot_successful_enqueues, tot_empty_dest_enqueues, - tot_successful_dequeues, tot_splice, end_dequeues, + tot_successful_dequeues, tot_splice, tot_dequeue_last, + end_dequeues, tot_enqueues + tot_dequeues); if (tot_successful_enqueues != tot_successful_dequeues + end_dequeues) { @@ -563,12 +566,11 @@ int main(int argc, char **argv) * exactly as many empty queues than the number of non-empty * src splice. */ - if (test_wait_empty && test_splice && !test_dequeue - && tot_empty_dest_enqueues != tot_splice) { + if (tot_empty_dest_enqueues != tot_dequeue_last) { printf("WARNING! Discrepancy between empty enqueue (%llu) and " - "number of non-empty splice (%llu)\n", + "number of dequeue of last element (%llu)\n", tot_empty_dest_enqueues, - tot_splice); + tot_dequeue_last); retval = 1; } free(count_enqueuer);