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/* -*- 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/. */
/*
** 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 */
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