X-Git-Url: http://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Ftest_perthreadlock.c;h=e8e616637d1b06a3783d2f75fe1d9df73d8b17fb;hp=7402f01e0dcf24eb08893d64013f50d64ee681af;hb=dee093381aa4f642a707fb4b28dbb9df0b8ad155;hpb=833dbdb633ba44bfb71b4b965a83096d8e4e827b diff --git a/tests/test_perthreadlock.c b/tests/test_perthreadlock.c index 7402f01..e8e6166 100644 --- a/tests/test_perthreadlock.c +++ b/tests/test_perthreadlock.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 @@ -21,6 +21,7 @@ */ #define _GNU_SOURCE +#include "../config.h" #include #include #include @@ -30,13 +31,15 @@ #include #include #include -#include #include +#include -#include "../arch.h" +#include +#include -/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */ -#define CACHE_LINE_SIZE 4096 +#ifdef __linux__ +#include +#endif /* hardcoded number of CPUs */ #define NR_CPUS 16384 @@ -61,7 +64,7 @@ static inline pid_t gettid(void) #else #define debug_yield_read() #endif -#include "../urcu.h" +#include struct test_array { int a; @@ -69,7 +72,7 @@ struct test_array { struct per_thread_lock { pthread_mutex_t lock; -} __attribute__((aligned(CACHE_LINE_SIZE))); /* cache-line aligned */ +} __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */ static struct per_thread_lock *per_thread_lock; @@ -84,10 +87,13 @@ static unsigned long duration; /* read-side C.S. duration, in loops */ static unsigned long rduration; +/* write-side C.S. duration, in loops */ +static unsigned long wduration; + static inline void loop_sleep(unsigned long l) { while(l-- != 0) - cpu_relax(); + caa_cpu_relax(); } static int verbose_mode; @@ -104,6 +110,12 @@ 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) { cpu_set_t mask; @@ -113,6 +125,7 @@ static void set_affinity(void) if (!use_affinity) return; +#if HAVE_SCHED_SETAFFINITY ret = pthread_mutex_lock(&affinity_mutex); if (ret) { perror("Error in pthread mutex lock"); @@ -126,7 +139,12 @@ static void set_affinity(void) } CPU_ZERO(&mask); CPU_SET(cpu, &mask); +#if SCHED_SETAFFINITY_ARGS == 2 + sched_setaffinity(0, &mask); +#else sched_setaffinity(0, sizeof(mask), &mask); +#endif +#endif /* HAVE_SCHED_SETAFFINITY */ } /* @@ -142,13 +160,13 @@ 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 long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_writes; +unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes; static -unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_reads; +unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads; static unsigned int nr_readers; static unsigned int nr_writers; @@ -192,15 +210,15 @@ void *thr_reader(void *data) for (;;) { pthread_mutex_lock(&per_thread_lock[tidx].lock); assert(test_array.a == 8); - if (unlikely(rduration)) + if (caa_unlikely(rduration)) loop_sleep(rduration); pthread_mutex_unlock(&per_thread_lock[tidx].lock); - nr_reads++; - if (unlikely(!test_duration_read())) + URCU_TLS(nr_reads)++; + if (caa_unlikely(!test_duration_read())) break; } - tot_nr_reads[tidx] = nr_reads; + tot_nr_reads[tidx] = URCU_TLS(nr_reads); printf_verbose("thread_end %s, thread id : %lx, tid %lu\n", "reader", pthread_self(), (unsigned long)gettid()); return ((void*)1); @@ -220,7 +238,7 @@ void *thr_writer(void *data) while (!test_go) { } - smp_mb(); + cmm_smp_mb(); for (;;) { for (tidx = 0; tidx < nr_readers; tidx++) { @@ -228,19 +246,21 @@ void *thr_writer(void *data) } test_array.a = 0; test_array.a = 8; + if (caa_unlikely(wduration)) + loop_sleep(wduration); for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) { pthread_mutex_unlock(&per_thread_lock[tidx].lock); } - nr_writes++; - if (unlikely(!test_duration_write())) + 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()); - tot_nr_writes[wtidx] = nr_writes; + tot_nr_writes[wtidx] = URCU_TLS(nr_writes); return ((void*)2); } @@ -252,6 +272,7 @@ void show_usage(int argc, char **argv) #endif printf(" [-d delay] (writer period (us))"); printf(" [-c duration] (reader C.S. duration (in loops))"); + printf(" [-e duration] (writer C.S. duration (in loops))"); printf(" [-v] (verbose output)"); printf(" [-a cpu#] [-a cpu#]... (affinity)"); printf("\n"); @@ -262,7 +283,6 @@ int main(int argc, char **argv) int err; pthread_t *tid_reader, *tid_writer; void *tret; - unsigned long long *count_reader, *count_writer; unsigned long long tot_reads = 0, tot_writes = 0; int i, a; @@ -270,7 +290,7 @@ int main(int argc, char **argv) show_usage(argc, argv); return -1; } - smp_mb(); + cmm_smp_mb(); err = sscanf(argv[1], "%u", &nr_readers); if (err != 1) { @@ -326,6 +346,13 @@ 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; @@ -341,11 +368,14 @@ int main(int argc, char **argv) tid_reader = malloc(sizeof(*tid_reader) * nr_readers); tid_writer = malloc(sizeof(*tid_writer) * nr_writers); - count_reader = malloc(sizeof(*count_reader) * nr_readers); - count_writer = malloc(sizeof(*count_writer) * nr_writers); tot_nr_reads = malloc(sizeof(*tot_nr_reads) * nr_readers); tot_nr_writes = malloc(sizeof(*tot_nr_writes) * nr_writers); per_thread_lock = malloc(sizeof(*per_thread_lock) * nr_readers); + for (i = 0; i < nr_readers; i++) { + err = pthread_mutex_init(&per_thread_lock[i].lock, NULL); + if (err != 0) + exit(1); + } next_aff = 0; @@ -362,7 +392,7 @@ int main(int argc, char **argv) exit(1); } - smp_mb(); + cmm_smp_mb(); test_go = 1; @@ -385,17 +415,15 @@ 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); free(tid_reader); free(tid_writer); - free(count_reader); - free(count_writer); free(tot_nr_reads); free(tot_nr_writes); free(per_thread_lock);