1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/nsprpub/pr/tests/perf.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,442 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nspr.h"
1.10 +#include "plgetopt.h"
1.11 +
1.12 +#include <stdio.h>
1.13 +#include <stdlib.h>
1.14 +#include <string.h>
1.15 +
1.16 +int _debug_on = 0;
1.17 +#define DPRINTF(arg) if (_debug_on) printf arg
1.18 +
1.19 +#include "obsolete/prsem.h"
1.20 +
1.21 +PRLock *lock;
1.22 +PRMonitor *mon;
1.23 +PRMonitor *mon2;
1.24 +
1.25 +#define DEFAULT_COUNT 1000
1.26 +
1.27 +PRInt32 count;
1.28 +
1.29 +static void nop(int a, int b, int c)
1.30 +{
1.31 +}
1.32 +
1.33 +static void LocalProcedureCall(void)
1.34 +{
1.35 + PRInt32 i;
1.36 +
1.37 + for (i = 0; i < count; i++) {
1.38 + nop(i, i, 5);
1.39 + }
1.40 +}
1.41 +
1.42 +static void DLLProcedureCall(void)
1.43 +{
1.44 + PRInt32 i;
1.45 + PRThreadState state;
1.46 + PRThread *self = PR_GetCurrentThread();
1.47 +
1.48 + for (i = 0; i < count; i++) {
1.49 + state = PR_GetThreadState(self);
1.50 + }
1.51 +}
1.52 +
1.53 +static void Now(void)
1.54 +{
1.55 + PRInt32 i;
1.56 + PRTime time;
1.57 +
1.58 + for (i = 0; i < count; i++) {
1.59 + time = PR_Now();
1.60 + }
1.61 +}
1.62 +
1.63 +static void Interval(void)
1.64 +{
1.65 + PRInt32 i;
1.66 + PRIntervalTime time;
1.67 +
1.68 + for (i = 0; i < count; i++) {
1.69 + time = PR_IntervalNow();
1.70 + }
1.71 +}
1.72 +
1.73 +static void IdleLock(void)
1.74 +{
1.75 + PRInt32 i;
1.76 +
1.77 + for (i = 0; i < count; i++) {
1.78 + PR_Lock(lock);
1.79 + PR_Unlock(lock);
1.80 + }
1.81 +}
1.82 +
1.83 +static void IdleMonitor(void)
1.84 +{
1.85 + PRInt32 i;
1.86 +
1.87 + for (i = 0; i < count; i++) {
1.88 + PR_EnterMonitor(mon);
1.89 + PR_ExitMonitor(mon);
1.90 + }
1.91 +}
1.92 +
1.93 +static void IdleCMonitor(void)
1.94 +{
1.95 + PRInt32 i;
1.96 +
1.97 + for (i = 0; i < count; i++) {
1.98 + PR_CEnterMonitor((void*)7);
1.99 + PR_CExitMonitor((void*)7);
1.100 + }
1.101 +}
1.102 +
1.103 +/************************************************************************/
1.104 +
1.105 +static void PR_CALLBACK dull(void *arg)
1.106 +{
1.107 +}
1.108 +
1.109 +static void CDThread(void)
1.110 +{
1.111 + PRInt32 i;
1.112 + int num_threads = count;
1.113 +
1.114 + /*
1.115 + * Cannot create too many threads
1.116 + */
1.117 + if (num_threads > 1000)
1.118 + num_threads = 1000;
1.119 +
1.120 + for (i = 0; i < num_threads; i++) {
1.121 + PRThread *t = PR_CreateThread(PR_USER_THREAD,
1.122 + dull, 0,
1.123 + PR_PRIORITY_NORMAL,
1.124 + PR_LOCAL_THREAD,
1.125 + PR_UNJOINABLE_THREAD,
1.126 + 0);
1.127 + if (NULL == t) {
1.128 + fprintf(stderr, "CDThread: cannot create thread %3d\n", i);
1.129 + } else {
1.130 + DPRINTF(("CDThread: created thread %3d \n",i));
1.131 + }
1.132 + PR_Sleep(0);
1.133 + }
1.134 +}
1.135 +
1.136 +static int alive;
1.137 +static int cxq;
1.138 +
1.139 +static void PR_CALLBACK CXReader(void *arg)
1.140 +{
1.141 + PRInt32 i, n;
1.142 +
1.143 + PR_EnterMonitor(mon);
1.144 + n = count / 2;
1.145 + for (i = 0; i < n; i++) {
1.146 + while (cxq == 0) {
1.147 + DPRINTF(("CXReader: thread = 0x%lx waiting\n",
1.148 + PR_GetCurrentThread()));
1.149 + PR_Wait(mon, PR_INTERVAL_NO_TIMEOUT);
1.150 + }
1.151 + --cxq;
1.152 + PR_Notify(mon);
1.153 + }
1.154 + PR_ExitMonitor(mon);
1.155 +
1.156 + PR_EnterMonitor(mon2);
1.157 + --alive;
1.158 + PR_Notify(mon2);
1.159 + PR_ExitMonitor(mon2);
1.160 + DPRINTF(("CXReader: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
1.161 +}
1.162 +
1.163 +static void PR_CALLBACK CXWriter(void *arg)
1.164 +{
1.165 + PRInt32 i, n;
1.166 +
1.167 + PR_EnterMonitor(mon);
1.168 + n = count / 2;
1.169 + for (i = 0; i < n; i++) {
1.170 + while (cxq == 1) {
1.171 + DPRINTF(("CXWriter: thread = 0x%lx waiting\n",
1.172 + PR_GetCurrentThread()));
1.173 + PR_Wait(mon, PR_INTERVAL_NO_TIMEOUT);
1.174 + }
1.175 + ++cxq;
1.176 + PR_Notify(mon);
1.177 + }
1.178 + PR_ExitMonitor(mon);
1.179 +
1.180 + PR_EnterMonitor(mon2);
1.181 + --alive;
1.182 + PR_Notify(mon2);
1.183 + PR_ExitMonitor(mon2);
1.184 + DPRINTF(("CXWriter: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
1.185 +}
1.186 +
1.187 +static void ContextSwitch(PRThreadScope scope1, PRThreadScope scope2)
1.188 +{
1.189 + PRThread *t1, *t2;
1.190 +
1.191 + PR_EnterMonitor(mon2);
1.192 + alive = 2;
1.193 + cxq = 0;
1.194 +
1.195 + t1 = PR_CreateThread(PR_USER_THREAD,
1.196 + CXReader, 0,
1.197 + PR_PRIORITY_NORMAL,
1.198 + scope1,
1.199 + PR_UNJOINABLE_THREAD,
1.200 + 0);
1.201 + if (NULL == t1) {
1.202 + fprintf(stderr, "ContextSwitch: cannot create thread\n");
1.203 + } else {
1.204 + DPRINTF(("ContextSwitch: created %s thread = 0x%lx\n",
1.205 + (scope1 == PR_GLOBAL_THREAD ?
1.206 + "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
1.207 + t1));
1.208 + }
1.209 + t2 = PR_CreateThread(PR_USER_THREAD,
1.210 + CXWriter, 0,
1.211 + PR_PRIORITY_NORMAL,
1.212 + scope2,
1.213 + PR_UNJOINABLE_THREAD,
1.214 + 0);
1.215 + if (NULL == t2) {
1.216 + fprintf(stderr, "ContextSwitch: cannot create thread\n");
1.217 + } else {
1.218 + DPRINTF(("ContextSwitch: created %s thread = 0x%lx\n",
1.219 + (scope2 == PR_GLOBAL_THREAD ?
1.220 + "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
1.221 + t2));
1.222 + }
1.223 +
1.224 + /* Wait for both of the threads to exit */
1.225 + while (alive) {
1.226 + PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
1.227 + }
1.228 + PR_ExitMonitor(mon2);
1.229 +}
1.230 +
1.231 +static void ContextSwitchUU(void)
1.232 +{
1.233 + ContextSwitch(PR_LOCAL_THREAD, PR_LOCAL_THREAD);
1.234 +}
1.235 +
1.236 +static void ContextSwitchUK(void)
1.237 +{
1.238 + ContextSwitch(PR_LOCAL_THREAD, PR_GLOBAL_THREAD);
1.239 +}
1.240 +
1.241 +static void ContextSwitchKU(void)
1.242 +{
1.243 + ContextSwitch(PR_GLOBAL_THREAD, PR_LOCAL_THREAD);
1.244 +}
1.245 +
1.246 +static void ContextSwitchKK(void)
1.247 +{
1.248 + ContextSwitch(PR_GLOBAL_THREAD, PR_GLOBAL_THREAD);
1.249 +}
1.250 +
1.251 +/************************************************************************/
1.252 +
1.253 +static void PR_CALLBACK SemaThread(void *argSema)
1.254 +{
1.255 + PRSemaphore **sem = (PRSemaphore **)argSema;
1.256 + PRInt32 i, n;
1.257 +
1.258 + n = count / 2;
1.259 + for (i = 0; i < n; i++) {
1.260 + DPRINTF(("SemaThread: thread = 0x%lx waiting on sem = 0x%lx\n",
1.261 + PR_GetCurrentThread(), sem[0]));
1.262 + PR_WaitSem(sem[0]);
1.263 + DPRINTF(("SemaThread: thread = 0x%lx posting on sem = 0x%lx\n",
1.264 + PR_GetCurrentThread(), sem[1]));
1.265 + PR_PostSem(sem[1]);
1.266 + }
1.267 +
1.268 + PR_EnterMonitor(mon2);
1.269 + --alive;
1.270 + PR_Notify(mon2);
1.271 + PR_ExitMonitor(mon2);
1.272 + DPRINTF(("SemaThread: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
1.273 +}
1.274 +
1.275 +static PRSemaphore *sem_set1[2];
1.276 +static PRSemaphore *sem_set2[2];
1.277 +
1.278 +static void SemaContextSwitch(PRThreadScope scope1, PRThreadScope scope2)
1.279 +{
1.280 + PRThread *t1, *t2;
1.281 + sem_set1[0] = PR_NewSem(1);
1.282 + sem_set1[1] = PR_NewSem(0);
1.283 + sem_set2[0] = sem_set1[1];
1.284 + sem_set2[1] = sem_set1[0];
1.285 +
1.286 + PR_EnterMonitor(mon2);
1.287 + alive = 2;
1.288 + cxq = 0;
1.289 +
1.290 + t1 = PR_CreateThread(PR_USER_THREAD,
1.291 + SemaThread,
1.292 + sem_set1,
1.293 + PR_PRIORITY_NORMAL,
1.294 + scope1,
1.295 + PR_UNJOINABLE_THREAD,
1.296 + 0);
1.297 + if (NULL == t1) {
1.298 + fprintf(stderr, "SemaContextSwitch: cannot create thread\n");
1.299 + } else {
1.300 + DPRINTF(("SemaContextSwitch: created %s thread = 0x%lx\n",
1.301 + (scope1 == PR_GLOBAL_THREAD ?
1.302 + "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
1.303 + t1));
1.304 + }
1.305 + t2 = PR_CreateThread(PR_USER_THREAD,
1.306 + SemaThread,
1.307 + sem_set2,
1.308 + PR_PRIORITY_NORMAL,
1.309 + scope2,
1.310 + PR_UNJOINABLE_THREAD,
1.311 + 0);
1.312 + if (NULL == t2) {
1.313 + fprintf(stderr, "SemaContextSwitch: cannot create thread\n");
1.314 + } else {
1.315 + DPRINTF(("SemaContextSwitch: created %s thread = 0x%lx\n",
1.316 + (scope2 == PR_GLOBAL_THREAD ?
1.317 + "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
1.318 + t2));
1.319 + }
1.320 +
1.321 + /* Wait for both of the threads to exit */
1.322 + while (alive) {
1.323 + PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
1.324 + }
1.325 + PR_ExitMonitor(mon2);
1.326 +
1.327 + PR_DestroySem(sem_set1[0]);
1.328 + PR_DestroySem(sem_set1[1]);
1.329 +}
1.330 +
1.331 +static void SemaContextSwitchUU(void)
1.332 +{
1.333 + SemaContextSwitch(PR_LOCAL_THREAD, PR_LOCAL_THREAD);
1.334 +}
1.335 +
1.336 +static void SemaContextSwitchUK(void)
1.337 +{
1.338 + SemaContextSwitch(PR_LOCAL_THREAD, PR_GLOBAL_THREAD);
1.339 +}
1.340 +
1.341 +static void SemaContextSwitchKU(void)
1.342 +{
1.343 + SemaContextSwitch(PR_GLOBAL_THREAD, PR_LOCAL_THREAD);
1.344 +}
1.345 +
1.346 +static void SemaContextSwitchKK(void)
1.347 +{
1.348 + SemaContextSwitch(PR_GLOBAL_THREAD, PR_GLOBAL_THREAD);
1.349 +}
1.350 +
1.351 +
1.352 +/************************************************************************/
1.353 +
1.354 +static void Measure(void (*func)(void), const char *msg)
1.355 +{
1.356 + PRIntervalTime start, stop;
1.357 + double d;
1.358 +
1.359 + start = PR_IntervalNow();
1.360 + (*func)();
1.361 + stop = PR_IntervalNow() - start;
1.362 + d = (double)PR_IntervalToMicroseconds(stop);
1.363 +
1.364 + printf("%40s: %6.2f usec\n", msg, d / count);
1.365 +}
1.366 +
1.367 +int main(int argc, char **argv)
1.368 +{
1.369 + PLOptStatus os;
1.370 + PLOptState *opt = PL_CreateOptState(argc, argv, "dc:");
1.371 + while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
1.372 + {
1.373 + if (PL_OPT_BAD == os) continue;
1.374 + switch (opt->option)
1.375 + {
1.376 + case 'd': /* debug mode */
1.377 + _debug_on = 1;
1.378 + break;
1.379 + case 'c': /* loop count */
1.380 + count = atoi(opt->value);
1.381 + break;
1.382 + default:
1.383 + break;
1.384 + }
1.385 + }
1.386 + PL_DestroyOptState(opt);
1.387 +
1.388 + if (0 == count) count = DEFAULT_COUNT;
1.389 +
1.390 + PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
1.391 + PR_BlockClockInterrupts();
1.392 + PR_UnblockClockInterrupts();
1.393 + PR_STDIO_INIT();
1.394 +
1.395 + lock = PR_NewLock();
1.396 + mon = PR_NewMonitor();
1.397 + mon2 = PR_NewMonitor();
1.398 +
1.399 + Measure(LocalProcedureCall, "local procedure call overhead");
1.400 + Measure(DLLProcedureCall, "DLL procedure call overhead");
1.401 + Measure(Now, "current calendar time");
1.402 + Measure(Interval, "interval time");
1.403 + Measure(IdleLock, "idle lock lock/unlock pair");
1.404 + Measure(IdleMonitor, "idle monitor entry/exit pair");
1.405 + Measure(IdleCMonitor, "idle cache monitor entry/exit pair");
1.406 + Measure(CDThread, "create/destroy thread pair");
1.407 + Measure(ContextSwitchUU, "context switch - user/user");
1.408 + Measure(ContextSwitchUK, "context switch - user/kernel");
1.409 + Measure(ContextSwitchKU, "context switch - kernel/user");
1.410 + Measure(ContextSwitchKK, "context switch - kernel/kernel");
1.411 + Measure(SemaContextSwitchUU, "sema context switch - user/user");
1.412 + Measure(SemaContextSwitchUK, "sema context switch - user/kernel");
1.413 + Measure(SemaContextSwitchKU, "sema context switch - kernel/user");
1.414 + Measure(SemaContextSwitchKK, "sema context switch - kernel/kernel");
1.415 +
1.416 + printf("--------------\n");
1.417 + printf("Adding 7 additional CPUs\n");
1.418 +
1.419 + PR_SetConcurrency(8);
1.420 + printf("--------------\n");
1.421 +
1.422 + Measure(LocalProcedureCall, "local procedure call overhead");
1.423 + Measure(DLLProcedureCall, "DLL procedure call overhead");
1.424 + Measure(Now, "current calendar time");
1.425 + Measure(Interval, "interval time");
1.426 + Measure(IdleLock, "idle lock lock/unlock pair");
1.427 + Measure(IdleMonitor, "idle monitor entry/exit pair");
1.428 + Measure(IdleCMonitor, "idle cache monitor entry/exit pair");
1.429 + Measure(CDThread, "create/destroy thread pair");
1.430 + Measure(ContextSwitchUU, "context switch - user/user");
1.431 + Measure(ContextSwitchUK, "context switch - user/kernel");
1.432 + Measure(ContextSwitchKU, "context switch - kernel/user");
1.433 + Measure(ContextSwitchKK, "context switch - kernel/kernel");
1.434 + Measure(SemaContextSwitchUU, "sema context switch - user/user");
1.435 + Measure(SemaContextSwitchUK, "sema context switch - user/kernel");
1.436 + Measure(SemaContextSwitchKU, "sema context switch - kernel/user");
1.437 + Measure(SemaContextSwitchKK, "sema context switch - kernel/kernel");
1.438 +
1.439 + PR_DestroyLock(lock);
1.440 + PR_DestroyMonitor(mon);
1.441 + PR_DestroyMonitor(mon2);
1.442 +
1.443 + PR_Cleanup();
1.444 + return 0;
1.445 +}
