gecko/xpcom/tests/TestThreads.cpp
2012-05-21 12:12:37 +01:00

224 lines
6.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "nsThreadUtils.h"
#include <stdio.h>
#include <stdlib.h>
#include "nspr.h"
#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
#include "nsXPCOM.h"
class nsRunner : public nsIRunnable {
public:
NS_DECL_ISUPPORTS
NS_IMETHOD Run() {
nsCOMPtr<nsIThread> thread;
nsresult rv = NS_GetCurrentThread(getter_AddRefs(thread));
if (NS_FAILED(rv)) {
printf("failed to get current thread\n");
return rv;
}
printf("running %d on thread %p\n", mNum, (void *)thread.get());
// if we don't do something slow, we'll never see the other
// worker threads run
PR_Sleep(PR_MillisecondsToInterval(100));
return rv;
}
nsRunner(int num) : mNum(num) {
}
protected:
int mNum;
};
NS_IMPL_THREADSAFE_ISUPPORTS1(nsRunner, nsIRunnable)
nsresult
TestThreads()
{
nsresult rv;
nsCOMPtr<nsIRunnable> event = new nsRunner(0);
if (!event)
return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsIThread> runner;
rv = NS_NewThread(getter_AddRefs(runner), event);
if (NS_FAILED(rv)) {
printf("failed to create thread\n");
return rv;
}
nsCOMPtr<nsIThread> thread;
rv = NS_GetCurrentThread(getter_AddRefs(thread));
if (NS_FAILED(rv)) {
printf("failed to get current thread\n");
return rv;
}
rv = runner->Shutdown(); // wait for the runner to die before quitting
if (NS_FAILED(rv)) {
printf("join failed\n");
}
PR_Sleep(PR_MillisecondsToInterval(100)); // hopefully the runner will quit here
return NS_OK;
}
class nsStressRunner : public nsIRunnable {
public:
NS_DECL_ISUPPORTS
NS_IMETHOD Run() {
NS_ASSERTION(!mWasRun, "run twice!");
mWasRun = true;
PR_Sleep(1);
if (!PR_AtomicDecrement(&gNum)) {
printf(" last thread was %d\n", mNum);
}
return NS_OK;
}
nsStressRunner(int num) : mNum(num), mWasRun(false) {
PR_AtomicIncrement(&gNum);
}
static PRInt32 GetGlobalCount() {return gNum;}
private:
~nsStressRunner() {
NS_ASSERTION(mWasRun, "never run!");
}
protected:
static PRInt32 gNum;
PRInt32 mNum;
bool mWasRun;
};
PRInt32 nsStressRunner::gNum = 0;
NS_IMPL_THREADSAFE_ISUPPORTS1(nsStressRunner, nsIRunnable)
static int Stress(int loops, int threads)
{
for (int i = 0; i < loops; i++) {
printf("Loop %d of %d\n", i+1, loops);
int k;
nsIThread** array = new nsIThread*[threads];
NS_ASSERTION(array, "out of memory");
NS_ASSERTION(!nsStressRunner::GetGlobalCount(), "bad count of runnables");
for (k = 0; k < threads; k++) {
nsCOMPtr<nsIThread> t;
nsresult rv = NS_NewThread(getter_AddRefs(t), new nsStressRunner(k));
if (NS_FAILED(rv)) {
NS_ERROR("can't create thread");
return -1;
}
NS_ADDREF(array[k] = t);
}
for (k = threads-1; k >= 0; k--) {
array[k]->Shutdown();
NS_RELEASE(array[k]);
}
delete [] array;
}
return 0;
}
static void threadProc(void *arg)
{
// printf(" running thread %d\n", (int) arg);
PR_Sleep(1);
PR_ASSERT(PR_JOINABLE_THREAD == PR_GetThreadState(PR_GetCurrentThread()));
}
static int StressNSPR(int loops, int threads)
{
for (int i = 0; i < loops; i++) {
printf("Loop %d of %d\n", i+1, loops);
int k;
PRThread** array = new PRThread*[threads];
PR_ASSERT(array);
for (k = 0; k < threads; k++) {
array[k] = PR_CreateThread(PR_USER_THREAD,
threadProc, (void*) k,
PR_PRIORITY_NORMAL,
PR_GLOBAL_THREAD,
PR_JOINABLE_THREAD,
0);
PR_ASSERT(array[k]);
}
for (k = 0; k < threads; k++) {
PR_ASSERT(PR_JOINABLE_THREAD == PR_GetThreadState(array[k]));
}
for (k = threads-1; k >= 0; k--) {
PR_JoinThread(array[k]);
}
delete [] array;
}
return 0;
}
int
main(int argc, char** argv)
{
int retval = 0;
nsresult rv;
rv = NS_InitXPCOM2(nsnull, nsnull, nsnull);
if (NS_FAILED(rv)) return -1;
if (argc > 1 && !strcmp(argv[1], "-stress")) {
int loops;
int threads;
if (argc != 4 || *argv[2] != '-' || *argv[3] != '-' ||
!(loops = atoi(argv[2]+1)) || !(threads = atoi(argv[3]+1))) {
printf("To use -stress you must pass loop count and thread count...\n"
" TestThreads -stress -1000 -50\n");
} else {
printf("Running stress test with %d loops of %d threads each\n",
loops, threads);
retval = Stress(loops, threads);
}
} else if (argc > 1 && !strcmp(argv[1], "-stress-nspr")) {
int loops;
int threads;
if (argc != 4 || *argv[2] != '-' || *argv[3] != '-' ||
!(loops = atoi(argv[2]+1)) || !(threads = atoi(argv[3]+1))) {
printf("To use -stress-nspr you must pass loop count and thread count...\n"
" TestThreads -stress -1000 -50\n");
} else {
printf("Running stress test with %d loops of %d threads each\n",
loops, threads);
retval = StressNSPR(loops, threads);
}
} else {
rv = TestThreads();
if (NS_FAILED(rv)) return -1;
}
rv = NS_ShutdownXPCOM(nsnull);
if (NS_FAILED(rv)) return -1;
return retval;
}