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-rw-r--r--nsprpub/pr/tests/pollable.c261
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diff --git a/nsprpub/pr/tests/pollable.c b/nsprpub/pr/tests/pollable.c
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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/. */
+
+/*
+ * A test for the pollable events.
+ *
+ * A number of threads are in a ring configuration, each waiting on
+ * a pollable event that is set by its upstream neighbor.
+ */
+
+#include "prinit.h"
+#include "prio.h"
+#include "prthread.h"
+#include "prerror.h"
+#include "prmem.h"
+#include "prlog.h"
+#include "prprf.h"
+
+#include "plgetopt.h"
+
+#include <stdlib.h>
+
+#define DEFAULT_THREADS 10
+#define DEFAULT_LOOPS 100
+
+PRIntn numThreads = DEFAULT_THREADS;
+PRIntn numIterations = DEFAULT_LOOPS;
+PRIntervalTime dally = PR_INTERVAL_NO_WAIT;
+PRFileDesc *debug_out = NULL;
+PRBool debug_mode = PR_FALSE;
+PRBool verbosity = PR_FALSE;
+
+typedef struct ThreadData {
+ PRFileDesc *event;
+ int index;
+ struct ThreadData *next;
+} ThreadData;
+
+void ThreadRoutine(void *arg)
+{
+ ThreadData *data = (ThreadData *) arg;
+ PRIntn i;
+ PRPollDesc pd;
+ PRInt32 rv;
+
+ pd.fd = data->event;
+ pd.in_flags = PR_POLL_READ;
+
+ for (i = 0; i < numIterations; i++) {
+ rv = PR_Poll(&pd, 1, PR_INTERVAL_NO_TIMEOUT);
+ if (rv == -1) {
+ PR_fprintf(PR_STDERR, "PR_Poll failed\n");
+ exit(1);
+ }
+ if (verbosity) {
+ PR_fprintf(debug_out, "thread %d awakened\n", data->index);
+ }
+ PR_ASSERT(rv != 0);
+ PR_ASSERT(pd.out_flags & PR_POLL_READ);
+ if (PR_WaitForPollableEvent(data->event) == PR_FAILURE) {
+ PR_fprintf(PR_STDERR, "consume event failed\n");
+ exit(1);
+ }
+ if (dally != PR_INTERVAL_NO_WAIT) {
+ PR_Sleep(dally);
+ }
+ if (verbosity) {
+ PR_fprintf(debug_out, "thread %d posting event\n", data->index);
+ }
+ if (PR_SetPollableEvent(data->next->event) == PR_FAILURE) {
+ PR_fprintf(PR_STDERR, "post event failed\n");
+ exit(1);
+ }
+ }
+}
+
+static void Help(void)
+{
+ debug_out = PR_STDOUT;
+
+ PR_fprintf(
+ debug_out, "Usage: pollable [-c n] [-t n] [-d] [-v] [-G] [-C n] [-D n]\n");
+ PR_fprintf(
+ debug_out, "-c n\tloops at thread level (default: %d)\n", DEFAULT_LOOPS);
+ PR_fprintf(
+ debug_out, "-t n\tnumber of threads (default: %d)\n", DEFAULT_THREADS);
+ PR_fprintf(debug_out, "-d\tturn on debugging output (default: FALSE)\n");
+ PR_fprintf(debug_out, "-v\tturn on verbose output (default: FALSE)\n");
+ PR_fprintf(debug_out, "-G\tglobal threads only (default: FALSE)\n");
+ PR_fprintf(debug_out, "-C n\tconcurrency setting (default: 1)\n");
+ PR_fprintf(debug_out, "-D n\tdally setting (msecs) (default: 0)\n");
+} /* Help */
+
+int main(int argc, char **argv)
+{
+ ThreadData selfData;
+ ThreadData *data;
+ PRThread **thread;
+ void *block;
+ PRIntn i;
+ PRIntervalTime timeStart, timeEnd;
+ PRPollDesc pd;
+ PRInt32 rv;
+ PRThreadScope thread_scope = PR_LOCAL_THREAD;
+ PRBool help = PR_FALSE;
+ PRUintn concurrency = 1;
+ PRUintn average;
+ PLOptStatus os;
+ PLOptState *opt;
+
+ PR_STDIO_INIT();
+
+ opt = PL_CreateOptState(argc, argv, "hdvc:t:C:GD:");
+ while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
+ if (PL_OPT_BAD == os) {
+ continue;
+ }
+ switch (opt->option) {
+ case 'v': /* verbose mode */
+ verbosity = PR_TRUE;
+ case 'd': /* debug mode */
+ debug_mode = PR_TRUE;
+ break;
+ case 'c': /* loop counter */
+ numIterations = atoi(opt->value);
+ break;
+ case 't': /* thread limit */
+ numThreads = atoi(opt->value);
+ break;
+ case 'C': /* Concurrency limit */
+ concurrency = atoi(opt->value);
+ break;
+ case 'G': /* global threads only */
+ thread_scope = PR_GLOBAL_THREAD;
+ break;
+ case 'D': /* dally */
+ dally = PR_MillisecondsToInterval(atoi(opt->value));
+ break;
+ case 'h': /* help message */
+ Help();
+ help = PR_TRUE;
+ break;
+ default:
+ break;
+ }
+ }
+ PL_DestroyOptState(opt);
+
+ if (help) {
+ return 1;
+ }
+
+ if (concurrency > 1) {
+ PR_SetConcurrency(concurrency);
+ }
+
+ if (PR_TRUE == debug_mode) {
+ debug_out = PR_STDOUT;
+ PR_fprintf(debug_out, "Test parameters\n");
+ PR_fprintf(debug_out, "\tThreads involved: %d\n", numThreads);
+ PR_fprintf(debug_out, "\tIteration limit: %d\n", numIterations);
+ PR_fprintf(debug_out, "\tConcurrency: %d\n", concurrency);
+ PR_fprintf(debug_out, "\tThread type: %s\n",
+ (PR_GLOBAL_THREAD == thread_scope) ? "GLOBAL" : "LOCAL");
+ }
+
+ /*
+ * Malloc a block of memory and divide it into data and thread.
+ */
+ block = PR_MALLOC(numThreads * (sizeof(ThreadData) + sizeof(PRThread *)));
+ if (block == NULL) {
+ PR_fprintf(PR_STDERR, "cannot malloc, failed\n");
+ exit(1);
+ }
+ data = (ThreadData *) block;
+ thread = (PRThread **) &data[numThreads];
+
+ /* Pollable event */
+ selfData.event = PR_NewPollableEvent();
+ if (selfData.event == NULL) {
+ PR_fprintf(PR_STDERR, "cannot create event: (%ld, %ld)\n",
+ PR_GetError(), PR_GetOSError());
+ exit(1);
+ }
+ selfData.next = &data[0];
+ for (i = 0; i < numThreads; i++) {
+ data[i].event = PR_NewPollableEvent();
+ if (data[i].event == NULL) {
+ PR_fprintf(PR_STDERR, "cannot create event: (%ld, %ld)\n",
+ PR_GetError(), PR_GetOSError());
+ exit(1);
+ }
+ data[i].index = i;
+ if (i != numThreads - 1) {
+ data[i].next = &data[i + 1];
+ } else {
+ data[i].next = &selfData;
+ }
+
+ thread[i] = PR_CreateThread(PR_USER_THREAD,
+ ThreadRoutine, &data[i], PR_PRIORITY_NORMAL,
+ thread_scope, PR_JOINABLE_THREAD, 0);
+ if (thread[i] == NULL) {
+ PR_fprintf(PR_STDERR, "cannot create thread\n");
+ exit(1);
+ }
+ }
+
+ timeStart = PR_IntervalNow();
+ pd.fd = selfData.event;
+ pd.in_flags = PR_POLL_READ;
+ for (i = 0; i < numIterations; i++) {
+ if (dally != PR_INTERVAL_NO_WAIT) {
+ PR_Sleep(dally);
+ }
+ if (verbosity) {
+ PR_fprintf(debug_out, "main thread posting event\n");
+ }
+ if (PR_SetPollableEvent(selfData.next->event) == PR_FAILURE) {
+ PR_fprintf(PR_STDERR, "set event failed\n");
+ exit(1);
+ }
+ rv = PR_Poll(&pd, 1, PR_INTERVAL_NO_TIMEOUT);
+ if (rv == -1) {
+ PR_fprintf(PR_STDERR, "wait failed\n");
+ exit(1);
+ }
+ PR_ASSERT(rv != 0);
+ PR_ASSERT(pd.out_flags & PR_POLL_READ);
+ if (verbosity) {
+ PR_fprintf(debug_out, "main thread awakened\n");
+ }
+ if (PR_WaitForPollableEvent(selfData.event) == PR_FAILURE) {
+ PR_fprintf(PR_STDERR, "consume event failed\n");
+ exit(1);
+ }
+ }
+ timeEnd = PR_IntervalNow();
+
+ if (debug_mode) {
+ average = PR_IntervalToMicroseconds(timeEnd - timeStart)
+ / (numIterations * numThreads);
+ PR_fprintf(debug_out, "Average switch times %d usecs for %d threads\n",
+ average, numThreads);
+ }
+
+ for (i = 0; i < numThreads; i++) {
+ if (PR_JoinThread(thread[i]) == PR_FAILURE) {
+ PR_fprintf(PR_STDERR, "join thread failed\n");
+ exit(1);
+ }
+ PR_DestroyPollableEvent(data[i].event);
+ }
+ PR_DELETE(block);
+ PR_DestroyPollableEvent(selfData.event);
+
+ PR_fprintf(PR_STDOUT, "PASSED\n");
+ return 0;
+}