The Tor Browser: nsprpub/pr/tests/perf.c@6474c204b198 (annotated)

nsprpub/pr/tests/perf.c@6474c204b198 (annotated)

nsprpub/pr/tests/perf.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "nspr.h"
 #include "plgetopt.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 int _debug_on = 0;
 #define DPRINTF(arg) if (_debug_on) printf arg
 #include "obsolete/prsem.h"
 PRLock *lock;
 PRMonitor *mon;
 PRMonitor *mon2;
 #define DEFAULT_COUNT    1000
 PRInt32 count;
 static void nop(int a, int b, int c)
 {
 }
 static void LocalProcedureCall(void)
 {
     PRInt32 i;
     for (i = 0; i < count; i++) {
     nop(i, i, 5);
     }
 }
 static void DLLProcedureCall(void)
 {
     PRInt32 i;
 	PRThreadState state;
 	PRThread *self = PR_GetCurrentThread();
     for (i = 0; i < count; i++) {
     	state = PR_GetThreadState(self);
     }
 }
 static void Now(void)
 {
     PRInt32 i;
     PRTime time;
     for (i = 0; i < count; i++) {
         time = PR_Now();
     }
 }
 static void Interval(void)
 {
     PRInt32 i;
     PRIntervalTime time;
     for (i = 0; i < count; i++) {
         time = PR_IntervalNow();
     }
 }
 static void IdleLock(void)
 {
     PRInt32 i;
     for (i = 0; i < count; i++) {
     PR_Lock(lock);
     PR_Unlock(lock);
     }
 }
 static void IdleMonitor(void)
 {
     PRInt32 i;
     for (i = 0; i < count; i++) {
     PR_EnterMonitor(mon);
     PR_ExitMonitor(mon);
     }
 }
 static void IdleCMonitor(void)
 {
     PRInt32 i;
     for (i = 0; i < count; i++) {
     PR_CEnterMonitor((void*)7);
     PR_CExitMonitor((void*)7);
     }
 }
 /************************************************************************/
 static void PR_CALLBACK dull(void *arg)
 {
 }
 static void CDThread(void)
 {
     PRInt32 i;
     int num_threads = count;
     /*
      * Cannot create too many threads
      */
     if (num_threads > 1000)
     num_threads = 1000;
     for (i = 0; i < num_threads; i++) {
         PRThread *t = PR_CreateThread(PR_USER_THREAD,
                       dull, 0,
                       PR_PRIORITY_NORMAL,
                       PR_LOCAL_THREAD,
                       PR_UNJOINABLE_THREAD,
 );
         if (NULL == t) {
             fprintf(stderr, "CDThread: cannot create thread %3d\n", i);
         } else {
             DPRINTF(("CDThread: created thread %3d \n",i));
         }
         PR_Sleep(0);
     }
 }
 static int alive;
 static int cxq;
 static void PR_CALLBACK CXReader(void *arg)
 {
     PRInt32 i, n;
     PR_EnterMonitor(mon);
     n = count / 2;
     for (i = 0; i < n; i++) {
     while (cxq == 0) {
             DPRINTF(("CXReader: thread = 0x%lx waiting\n",
                     PR_GetCurrentThread()));
         PR_Wait(mon, PR_INTERVAL_NO_TIMEOUT);
     }
     --cxq;
     PR_Notify(mon);
     }
     PR_ExitMonitor(mon);
     PR_EnterMonitor(mon2);
     --alive;
     PR_Notify(mon2);
     PR_ExitMonitor(mon2);
     DPRINTF(("CXReader: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
 }
 static void PR_CALLBACK CXWriter(void *arg)
 {
     PRInt32 i, n;
     PR_EnterMonitor(mon);
     n = count / 2;
     for (i = 0; i < n; i++) {
     while (cxq == 1) {
             DPRINTF(("CXWriter: thread = 0x%lx waiting\n",
                     PR_GetCurrentThread()));
         PR_Wait(mon, PR_INTERVAL_NO_TIMEOUT);
     }
     ++cxq;
     PR_Notify(mon);
     }
     PR_ExitMonitor(mon);
     PR_EnterMonitor(mon2);
     --alive;
     PR_Notify(mon2);
     PR_ExitMonitor(mon2);
     DPRINTF(("CXWriter: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
 }
 static void ContextSwitch(PRThreadScope scope1, PRThreadScope scope2)
 {
     PRThread *t1, *t2;
     PR_EnterMonitor(mon2);
     alive = 2;
     cxq = 0;
     t1 = PR_CreateThread(PR_USER_THREAD,
                       CXReader, 0,
                       PR_PRIORITY_NORMAL,
                       scope1,
                       PR_UNJOINABLE_THREAD,
 );
     if (NULL == t1) {
         fprintf(stderr, "ContextSwitch: cannot create thread\n");
     } else {
         DPRINTF(("ContextSwitch: created %s thread = 0x%lx\n",
                 (scope1 == PR_GLOBAL_THREAD ?
                 "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
                             t1));
     }
     t2 = PR_CreateThread(PR_USER_THREAD,
                       CXWriter, 0,
                       PR_PRIORITY_NORMAL,
                       scope2,
                       PR_UNJOINABLE_THREAD,
 );
     if (NULL == t2) {
         fprintf(stderr, "ContextSwitch: cannot create thread\n");
     } else {
         DPRINTF(("ContextSwitch: created %s thread = 0x%lx\n",
                 (scope2 == PR_GLOBAL_THREAD ?
                 "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
                             t2));
     }
     /* Wait for both of the threads to exit */
     while (alive) {
     PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
     }
     PR_ExitMonitor(mon2);
 }
 static void ContextSwitchUU(void)
 {
     ContextSwitch(PR_LOCAL_THREAD, PR_LOCAL_THREAD);
 }
 static void ContextSwitchUK(void)
 {
     ContextSwitch(PR_LOCAL_THREAD, PR_GLOBAL_THREAD);
 }
 static void ContextSwitchKU(void)
 {
     ContextSwitch(PR_GLOBAL_THREAD, PR_LOCAL_THREAD);
 }
 static void ContextSwitchKK(void)
 {
     ContextSwitch(PR_GLOBAL_THREAD, PR_GLOBAL_THREAD);
 }
 /************************************************************************/
 static void PR_CALLBACK SemaThread(void *argSema)
 {
     PRSemaphore **sem = (PRSemaphore **)argSema;
     PRInt32 i, n;
     n = count / 2;
     for (i = 0; i < n; i++) {
         DPRINTF(("SemaThread: thread = 0x%lx waiting on sem = 0x%lx\n",
                 PR_GetCurrentThread(), sem[0]));
         PR_WaitSem(sem[0]);
         DPRINTF(("SemaThread: thread = 0x%lx posting on sem = 0x%lx\n",
                 PR_GetCurrentThread(), sem[1]));
         PR_PostSem(sem[1]);
     }
     PR_EnterMonitor(mon2);
     --alive;
     PR_Notify(mon2);
     PR_ExitMonitor(mon2);
     DPRINTF(("SemaThread: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
 }
 static  PRSemaphore *sem_set1[2];
 static  PRSemaphore *sem_set2[2];
 static void SemaContextSwitch(PRThreadScope scope1, PRThreadScope scope2)
 {
     PRThread *t1, *t2;
     sem_set1[0] = PR_NewSem(1);
     sem_set1[1] = PR_NewSem(0);
     sem_set2[0] = sem_set1[1];
     sem_set2[1] = sem_set1[0];
     PR_EnterMonitor(mon2);
     alive = 2;
     cxq = 0;
     t1 = PR_CreateThread(PR_USER_THREAD,
                       SemaThread,
                       sem_set1,
                       PR_PRIORITY_NORMAL,
                       scope1,
                       PR_UNJOINABLE_THREAD,
 );
     if (NULL == t1) {
         fprintf(stderr, "SemaContextSwitch: cannot create thread\n");
     } else {
         DPRINTF(("SemaContextSwitch: created %s thread = 0x%lx\n",
                 (scope1 == PR_GLOBAL_THREAD ?
                 "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
                             t1));
     }
     t2 = PR_CreateThread(PR_USER_THREAD,
                       SemaThread,
                       sem_set2,
                       PR_PRIORITY_NORMAL,
                       scope2,
                       PR_UNJOINABLE_THREAD,
 );
     if (NULL == t2) {
         fprintf(stderr, "SemaContextSwitch: cannot create thread\n");
     } else {
         DPRINTF(("SemaContextSwitch: created %s thread = 0x%lx\n",
                 (scope2 == PR_GLOBAL_THREAD ?
                 "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
                             t2));
     }
     /* Wait for both of the threads to exit */
     while (alive) {
         PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
     }
     PR_ExitMonitor(mon2);
     PR_DestroySem(sem_set1[0]);
     PR_DestroySem(sem_set1[1]);
 }
 static void SemaContextSwitchUU(void)
 {
     SemaContextSwitch(PR_LOCAL_THREAD, PR_LOCAL_THREAD);
 }
 static void SemaContextSwitchUK(void)
 {
     SemaContextSwitch(PR_LOCAL_THREAD, PR_GLOBAL_THREAD);
 }
 static void SemaContextSwitchKU(void)
 {
     SemaContextSwitch(PR_GLOBAL_THREAD, PR_LOCAL_THREAD);
 }
 static void SemaContextSwitchKK(void)
 {
     SemaContextSwitch(PR_GLOBAL_THREAD, PR_GLOBAL_THREAD);
 }
 /************************************************************************/
 static void Measure(void (*func)(void), const char *msg)
 {
     PRIntervalTime start, stop;
     double d;
     start = PR_IntervalNow();
     (*func)();
     stop = PR_IntervalNow() - start;
     d = (double)PR_IntervalToMicroseconds(stop);
     printf("%40s: %6.2f usec\n", msg, d / count);
 }
 int main(int argc, char **argv)
 {
 	PLOptStatus os;
 	PLOptState *opt = PL_CreateOptState(argc, argv, "dc:");
 	while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
     {
 		if (PL_OPT_BAD == os) continue;
         switch (opt->option)
         {
         case 'd':  /* debug mode */
 			_debug_on = 1;
             break;
         case 'c':  /* loop count */
             count = atoi(opt->value);
             break;
          default:
             break;
         }
     }
 	PL_DestroyOptState(opt);
     if (0 == count) count = DEFAULT_COUNT;
     PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
 	PR_BlockClockInterrupts();
 	PR_UnblockClockInterrupts();
     PR_STDIO_INIT();
     lock = PR_NewLock();
     mon = PR_NewMonitor();
     mon2 = PR_NewMonitor();
     Measure(LocalProcedureCall, "local procedure call overhead");
     Measure(DLLProcedureCall, "DLL procedure call overhead");
     Measure(Now, "current calendar time");
     Measure(Interval, "interval time");
     Measure(IdleLock, "idle lock lock/unlock pair");
     Measure(IdleMonitor, "idle monitor entry/exit pair");
     Measure(IdleCMonitor, "idle cache monitor entry/exit pair");
     Measure(CDThread, "create/destroy thread pair");
     Measure(ContextSwitchUU, "context switch - user/user");
     Measure(ContextSwitchUK, "context switch - user/kernel");
     Measure(ContextSwitchKU, "context switch - kernel/user");
     Measure(ContextSwitchKK, "context switch - kernel/kernel");
     Measure(SemaContextSwitchUU, "sema context switch - user/user");
     Measure(SemaContextSwitchUK, "sema context switch - user/kernel");
     Measure(SemaContextSwitchKU, "sema context switch - kernel/user");
     Measure(SemaContextSwitchKK, "sema context switch - kernel/kernel");
     printf("--------------\n");
     printf("Adding 7 additional CPUs\n");
     PR_SetConcurrency(8);
     printf("--------------\n");
     Measure(LocalProcedureCall, "local procedure call overhead");
     Measure(DLLProcedureCall, "DLL procedure call overhead");
     Measure(Now, "current calendar time");
     Measure(Interval, "interval time");
     Measure(IdleLock, "idle lock lock/unlock pair");
     Measure(IdleMonitor, "idle monitor entry/exit pair");
     Measure(IdleCMonitor, "idle cache monitor entry/exit pair");
     Measure(CDThread, "create/destroy thread pair");
     Measure(ContextSwitchUU, "context switch - user/user");
     Measure(ContextSwitchUK, "context switch - user/kernel");
     Measure(ContextSwitchKU, "context switch - kernel/user");
     Measure(ContextSwitchKK, "context switch - kernel/kernel");
     Measure(SemaContextSwitchUU, "sema context switch - user/user");
     Measure(SemaContextSwitchUK, "sema context switch - user/kernel");
     Measure(SemaContextSwitchKU, "sema context switch - kernel/user");
     Measure(SemaContextSwitchKK, "sema context switch - kernel/kernel");
     PR_DestroyLock(lock);
     PR_DestroyMonitor(mon);
     PR_DestroyMonitor(mon2);
     PR_Cleanup();
     return 0;
 }

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nsprpub/pr/tests/perf.c@6474c204b198 (annotated)

nsprpub/pr/tests/perf.c