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158 lines
3.7 KiB
C
158 lines
3.7 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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** File: concur.c
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** Description: test of adding and removing concurrency options
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*/
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#include "prcvar.h"
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#include "prinit.h"
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#include "prinrval.h"
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#include "prlock.h"
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#include "prprf.h"
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#include "prmem.h"
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#include "prlog.h"
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#include "plgetopt.h"
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#include "private/pprio.h"
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#include <stdlib.h>
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#define DEFAULT_RANGE 10
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#define DEFAULT_LOOPS 100
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static PRThreadScope thread_scope = PR_LOCAL_THREAD;
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typedef struct Context
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{
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PRLock *ml;
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PRCondVar *cv;
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PRIntn want, have;
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} Context;
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/*
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** Make the instance of 'context' static (not on the stack)
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** for Win16 threads
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*/
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static Context context = {NULL, NULL, 0, 0};
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static void PR_CALLBACK Dull(void *arg)
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{
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Context *context = (Context*)arg;
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PR_Lock(context->ml);
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context->have += 1;
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while (context->want >= context->have)
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PR_WaitCondVar(context->cv, PR_INTERVAL_NO_TIMEOUT);
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context->have -= 1;
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PR_Unlock(context->ml);
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} /* Dull */
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PRIntn PR_CALLBACK Concur(PRIntn argc, char **argv)
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{
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PRUintn cpus;
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PLOptStatus os;
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PRThread **threads;
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PRBool debug = PR_FALSE;
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PRUintn range = DEFAULT_RANGE;
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PRStatus rc;
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PRUintn cnt;
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PRUintn loops = DEFAULT_LOOPS;
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PRIntervalTime hundredMills = PR_MillisecondsToInterval(100);
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PLOptState *opt = PL_CreateOptState(argc, argv, "Gdl:r:");
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while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
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{
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if (PL_OPT_BAD == os) continue;
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switch (opt->option)
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{
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case 'G': /* GLOBAL threads */
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thread_scope = PR_GLOBAL_THREAD;
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break;
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case 'd': /* debug mode */
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debug = PR_TRUE;
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break;
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case 'r': /* range limit */
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range = atoi(opt->value);
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break;
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case 'l': /* loop counter */
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loops = atoi(opt->value);
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break;
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default:
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break;
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}
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}
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PL_DestroyOptState(opt);
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if (0 == range) range = DEFAULT_RANGE;
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if (0 == loops) loops = DEFAULT_LOOPS;
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context.ml = PR_NewLock();
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context.cv = PR_NewCondVar(context.ml);
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if (debug)
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PR_fprintf(
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PR_STDERR, "Testing with %d CPUs and %d interations\n", range, loops);
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threads = (PRThread**) PR_CALLOC(sizeof(PRThread*) * range);
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while (--loops > 0)
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{
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for (cpus = 1; cpus <= range; ++cpus)
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{
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PR_SetConcurrency(cpus);
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context.want = cpus;
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threads[cpus - 1] = PR_CreateThread(
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PR_USER_THREAD, Dull, &context, PR_PRIORITY_NORMAL,
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thread_scope, PR_JOINABLE_THREAD, 0);
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}
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PR_Sleep(hundredMills);
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for (cpus = range; cpus > 0; cpus--)
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{
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PR_SetConcurrency(cpus);
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context.want = cpus - 1;
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PR_Lock(context.ml);
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PR_NotifyCondVar(context.cv);
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PR_Unlock(context.ml);
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}
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for(cnt = 0; cnt < range; cnt++) {
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rc = PR_JoinThread(threads[cnt]);
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PR_ASSERT(rc == PR_SUCCESS);
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}
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}
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if (debug)
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PR_fprintf(
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PR_STDERR, "Waiting for %d thread(s) to exit\n", context.have);
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while (context.have > 0) PR_Sleep(hundredMills);
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if (debug)
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PR_fprintf(
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PR_STDERR, "Finished [want: %d, have: %d]\n",
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context.want, context.have);
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PR_DestroyLock(context.ml);
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PR_DestroyCondVar(context.cv);
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PR_DELETE(threads);
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PR_fprintf(PR_STDERR, "PASSED\n");
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return 0;
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} /* Concur */
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int main(int argc, char **argv)
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{
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PR_STDIO_INIT();
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return PR_Initialize(Concur, argc, argv, 0);
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} /* main */
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/* concur.c */
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