| /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
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| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (the "License"); you may not use this file except in compliance with |
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| * License. |
| * |
| * The Original Code is the Netscape Portable Runtime (NSPR). |
| * |
| * The Initial Developer of the Original Code is |
| * Netscape Communications Corporation. |
| * Portions created by the Initial Developer are Copyright (C) 1998-2000 |
| * the Initial Developer. All Rights Reserved. |
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| * Contributor(s): |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
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| * ***** END LICENSE BLOCK ***** */ |
| |
| /* |
| ** File: concur.c |
| ** Description: test of adding and removing concurrency options |
| */ |
| |
| #include "prcvar.h" |
| #include "prinit.h" |
| #include "prinrval.h" |
| #include "prlock.h" |
| #include "prprf.h" |
| #include "prmem.h" |
| #include "prlog.h" |
| |
| #include "plgetopt.h" |
| |
| #include "private/pprio.h" |
| |
| #include <stdlib.h> |
| |
| #define DEFAULT_RANGE 10 |
| #define DEFAULT_LOOPS 100 |
| |
| static PRThreadScope thread_scope = PR_LOCAL_THREAD; |
| |
| typedef struct Context |
| { |
| PRLock *ml; |
| PRCondVar *cv; |
| PRIntn want, have; |
| } Context; |
| |
| |
| /* |
| ** Make the instance of 'context' static (not on the stack) |
| ** for Win16 threads |
| */ |
| static Context context = {NULL, NULL, 0, 0}; |
| |
| static void PR_CALLBACK Dull(void *arg) |
| { |
| Context *context = (Context*)arg; |
| PR_Lock(context->ml); |
| context->have += 1; |
| while (context->want >= context->have) |
| PR_WaitCondVar(context->cv, PR_INTERVAL_NO_TIMEOUT); |
| context->have -= 1; |
| PR_Unlock(context->ml); |
| } /* Dull */ |
| |
| PRIntn PR_CALLBACK Concur(PRIntn argc, char **argv) |
| { |
| PRUintn cpus; |
| PLOptStatus os; |
| PRThread **threads; |
| PRBool debug = PR_FALSE; |
| PRUintn range = DEFAULT_RANGE; |
| PRStatus rc; |
| PRUintn cnt; |
| PRUintn loops = DEFAULT_LOOPS; |
| PRIntervalTime hundredMills = PR_MillisecondsToInterval(100); |
| PLOptState *opt = PL_CreateOptState(argc, argv, "Gdl:r:"); |
| while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) |
| { |
| if (PL_OPT_BAD == os) continue; |
| switch (opt->option) |
| { |
| case 'G': /* GLOBAL threads */ |
| thread_scope = PR_GLOBAL_THREAD; |
| break; |
| case 'd': /* debug mode */ |
| debug = PR_TRUE; |
| break; |
| case 'r': /* range limit */ |
| range = atoi(opt->value); |
| break; |
| case 'l': /* loop counter */ |
| loops = atoi(opt->value); |
| break; |
| default: |
| break; |
| } |
| } |
| PL_DestroyOptState(opt); |
| |
| if (0 == range) range = DEFAULT_RANGE; |
| if (0 == loops) loops = DEFAULT_LOOPS; |
| |
| context.ml = PR_NewLock(); |
| context.cv = PR_NewCondVar(context.ml); |
| |
| if (debug) |
| PR_fprintf( |
| PR_STDERR, "Testing with %d CPUs and %d interations\n", range, loops); |
| |
| threads = (PRThread**) PR_CALLOC(sizeof(PRThread*) * range); |
| while (--loops > 0) |
| { |
| for (cpus = 1; cpus <= range; ++cpus) |
| { |
| PR_SetConcurrency(cpus); |
| context.want = cpus; |
| |
| threads[cpus - 1] = PR_CreateThread( |
| PR_USER_THREAD, Dull, &context, PR_PRIORITY_NORMAL, |
| thread_scope, PR_JOINABLE_THREAD, 0); |
| } |
| |
| PR_Sleep(hundredMills); |
| |
| for (cpus = range; cpus > 0; cpus--) |
| { |
| PR_SetConcurrency(cpus); |
| context.want = cpus - 1; |
| |
| PR_Lock(context.ml); |
| PR_NotifyCondVar(context.cv); |
| PR_Unlock(context.ml); |
| } |
| for(cnt = 0; cnt < range; cnt++) { |
| rc = PR_JoinThread(threads[cnt]); |
| PR_ASSERT(rc == PR_SUCCESS); |
| } |
| } |
| |
| |
| if (debug) |
| PR_fprintf( |
| PR_STDERR, "Waiting for %d thread(s) to exit\n", context.have); |
| |
| while (context.have > 0) PR_Sleep(hundredMills); |
| |
| if (debug) |
| PR_fprintf( |
| PR_STDERR, "Finished [want: %d, have: %d]\n", |
| context.want, context.have); |
| |
| PR_DestroyLock(context.ml); |
| PR_DestroyCondVar(context.cv); |
| PR_DELETE(threads); |
| |
| PR_fprintf(PR_STDERR, "PASSED\n"); |
| |
| return 0; |
| } /* Concur */ |
| |
| int main(int argc, char **argv) |
| { |
| PR_STDIO_INIT(); |
| return PR_Initialize(Concur, argc, argv, 0); |
| } /* main */ |
| |
| /* concur.c */ |