X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Ftest_urcu_assign.c;h=67253da34dc6023d80e500924d41427898900405;hp=d38361f313d3c43ab5a0c1250b21cc53fc9c4bc3;hb=94df63189704b8f6483c737988df3728f5e13c2d;hpb=d8540fc53386cd7ff270085aca621e32772832ba diff --git a/tests/test_urcu_assign.c b/tests/test_urcu_assign.c index d38361f..67253da 100644 --- a/tests/test_urcu_assign.c +++ b/tests/test_urcu_assign.c @@ -3,7 +3,7 @@ * * Userspace RCU library - test program * - * Copyright February 2009 - Mathieu Desnoyers + * Copyright February 2009 - Mathieu Desnoyers * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -31,34 +31,20 @@ #include #include #include -#include -#include #include #include +#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 #else -#define debug_yield_read() +#define rcu_debug_yield_read() #endif #include @@ -77,10 +63,13 @@ static unsigned long duration; /* read-side C.S. duration, in loops */ static unsigned long rduration; -static inline void loop_sleep(unsigned long l) +/* write-side C.S. duration, in loops */ +static unsigned long wduration; + +static inline void loop_sleep(unsigned long loops) { - while(l-- != 0) - cpu_relax(); + while (loops-- != 0) + caa_cpu_relax(); } static int verbose_mode; @@ -97,17 +86,12 @@ 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; @@ -148,8 +132,8 @@ static int test_duration_read(void) return !test_stop; } -static unsigned long long __thread nr_writes; -static unsigned long long __thread nr_reads; +static DEFINE_URCU_TLS(unsigned long long, nr_writes); +static DEFINE_URCU_TLS(unsigned long long, nr_reads); static unsigned int nr_readers; static unsigned int nr_writers; @@ -180,7 +164,8 @@ void rcu_copy_mutex_unlock(void) /* * malloc/free are reusing memory areas too quickly, which does not let us * test races appropriately. Use a large circular array for allocations. - * ARRAY_SIZE is larger than nr_writers, which insures we never run over our tail. + * ARRAY_SIZE is larger than nr_writers, and we keep the mutex across + * both alloc and free, which insures we never run over our tail. */ #define ARRAY_SIZE (1048576 * nr_writers) #define ARRAY_POISON 0xDEADBEEF @@ -192,7 +177,6 @@ static struct test_array *test_array_alloc(void) struct test_array *ret; int index; - rcu_copy_mutex_lock(); index = array_index % ARRAY_SIZE; assert(test_array[index].a == ARRAY_POISON || test_array[index].a == 0); @@ -200,7 +184,6 @@ static struct test_array *test_array_alloc(void) array_index++; if (array_index == ARRAY_SIZE) array_index = 0; - rcu_copy_mutex_unlock(); return ret; } @@ -208,9 +191,7 @@ static void test_array_free(struct test_array *ptr) { if (!ptr) return; - rcu_copy_mutex_lock(); ptr->a = ARRAY_POISON; - rcu_copy_mutex_unlock(); } void *thr_reader(void *_count) @@ -218,8 +199,8 @@ void *thr_reader(void *_count) unsigned long long *count = _count; struct test_array *local_ptr; - printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", - "reader", pthread_self(), (unsigned long)gettid()); + printf_verbose("thread_begin %s, tid %lu\n", + "reader", urcu_get_thread_id()); set_affinity(); @@ -228,27 +209,27 @@ void *thr_reader(void *_count) while (!test_go) { } - smp_mb(); + cmm_smp_mb(); for (;;) { rcu_read_lock(); local_ptr = rcu_dereference(test_rcu_pointer); - debug_yield_read(); + rcu_debug_yield_read(); if (local_ptr) assert(local_ptr->a == 8); - if (unlikely(rduration)) + if (caa_unlikely(rduration)) loop_sleep(rduration); rcu_read_unlock(); - nr_reads++; - if (unlikely(!test_duration_read())) + URCU_TLS(nr_reads)++; + if (caa_unlikely(!test_duration_read())) break; } rcu_unregister_thread(); - *count = nr_reads; - printf_verbose("thread_end %s, thread id : %lx, tid %lu\n", - "reader", pthread_self(), (unsigned long)gettid()); + *count = URCU_TLS(nr_reads); + printf_verbose("thread_end %s, tid %lu\n", + "reader", urcu_get_thread_id()); return ((void*)1); } @@ -258,50 +239,55 @@ void *thr_writer(void *_count) unsigned long long *count = _count; struct test_array *new, *old; - printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", - "writer", pthread_self(), (unsigned long)gettid()); + printf_verbose("thread_begin %s, tid %lu\n", + "writer", urcu_get_thread_id()); set_affinity(); while (!test_go) { } - smp_mb(); + cmm_smp_mb(); for (;;) { + rcu_copy_mutex_lock(); new = test_array_alloc(); new->a = 8; - rcu_copy_mutex_lock(); old = test_rcu_pointer; rcu_assign_pointer(test_rcu_pointer, new); - rcu_copy_mutex_unlock(); + if (caa_unlikely(wduration)) + loop_sleep(wduration); synchronize_rcu(); if (old) old->a = 0; test_array_free(old); - nr_writes++; - if (unlikely(!test_duration_write())) + rcu_copy_mutex_unlock(); + URCU_TLS(nr_writes)++; + if (caa_unlikely(!test_duration_write())) break; - if (unlikely(wdelay)) + if (caa_unlikely(wdelay)) loop_sleep(wdelay); } - printf_verbose("thread_end %s, thread id : %lx, tid %lu\n", - "writer", pthread_self(), (unsigned long)gettid()); - *count = nr_writes; + printf_verbose("thread_end %s, tid %lu\n", + "writer", urcu_get_thread_id()); + *count = URCU_TLS(nr_writes); return ((void*)2); } void show_usage(int argc, char **argv) { - printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]); + printf("Usage : %s nr_readers nr_writers duration (s) \n", + argv[0]); + printf("OPTIONS:\n"); #ifdef DEBUG_YIELD - printf(" [-r] [-w] (yield reader and/or writer)"); + printf(" [-r] [-w] (yield reader and/or writer)\n"); #endif - printf(" [-d delay] (writer period (us))"); - printf(" [-c duration] (reader C.S. duration (in loops))"); - printf(" [-v] (verbose output)"); - printf(" [-a cpu#] [-a cpu#]... (affinity)"); + printf(" [-d delay] (writer period (us))\n"); + printf(" [-c duration] (reader C.S. duration (in loops))\n"); + printf(" [-e duration] (writer C.S. duration (in loops))\n"); + printf(" [-v] (verbose output)\n"); + printf(" [-a cpu#] [-a cpu#]... (affinity)\n"); printf("\n"); } @@ -343,10 +329,10 @@ int main(int argc, char **argv) switch (argv[i][1]) { #ifdef DEBUG_YIELD case 'r': - yield_active |= YIELD_READ; + rcu_yield_active |= RCU_YIELD_READ; break; case 'w': - yield_active |= YIELD_WRITE; + rcu_yield_active |= RCU_YIELD_WRITE; break; #endif case 'a': @@ -373,6 +359,13 @@ int main(int argc, char **argv) } wdelay = atol(argv[++i]); break; + case 'e': + if (argc < i + 2) { + show_usage(argc, argv); + return -1; + } + wduration = atol(argv[++i]); + break; case 'v': verbose_mode = 1; break; @@ -383,10 +376,10 @@ int main(int argc, char **argv) duration, nr_readers, nr_writers); printf_verbose("Writer delay : %lu loops.\n", wdelay); printf_verbose("Reader duration : %lu loops.\n", rduration); - 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()); - test_array = malloc(sizeof(*test_array) * ARRAY_SIZE); + test_array = calloc(1, sizeof(*test_array) * ARRAY_SIZE); tid_reader = malloc(sizeof(*tid_reader) * nr_readers); tid_writer = malloc(sizeof(*tid_writer) * nr_writers); count_reader = malloc(sizeof(*count_reader) * nr_readers); @@ -407,7 +400,7 @@ int main(int argc, char **argv) exit(1); } - smp_mb(); + cmm_smp_mb(); test_go = 1; @@ -430,10 +423,10 @@ int main(int argc, char **argv) printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads, tot_writes); - printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu " + printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu " "nr_writers %3u " "wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n", - argv[0], duration, nr_readers, rduration, + argv[0], duration, nr_readers, rduration, wduration, nr_writers, wdelay, tot_reads, tot_writes, tot_reads + tot_writes); test_array_free(test_rcu_pointer);