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/* -*- 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
*
* 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
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* 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) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* File: primblok.c
* Purpose: testing whether the primordial thread can block in a
* native blocking function without affecting the correct
* functioning of NSPR I/O functions (Bugzilla bug #30746)
*/
#if !defined(WINNT)
#include <stdio.h>
int main()
{
printf("This test is not relevant on this platform\n");
return 0;
}
#else /* WINNT */
#include "nspr.h"
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define TEST_FILE_NAME "primblok.dat"
/* use InterlockedExchange to update this variable */
static LONG iothread_done;
static void PR_CALLBACK IOThread(void *arg)
{
PRFileDesc *fd;
char buf[32];
PRInt32 nbytes;
/* Give the primordial thread one second to block */
Sleep(1000);
/*
* See if our PR_Write call will hang when the primordial
* thread is blocking in a native blocking function.
*/
fd = PR_Open(TEST_FILE_NAME, PR_WRONLY|PR_CREATE_FILE, 0666);
if (NULL == fd) {
fprintf(stderr, "PR_Open failed\n");
exit(1);
}
memset(buf, 0xaf, sizeof(buf));
fprintf(stderr, "iothread: calling PR_Write\n");
nbytes = PR_Write(fd, buf, sizeof(buf));
fprintf(stderr, "iothread: PR_Write returned\n");
if (nbytes != sizeof(buf)) {
fprintf(stderr, "PR_Write returned %d\n", nbytes);
exit(1);
}
if (PR_Close(fd) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
if (PR_Delete(TEST_FILE_NAME) == PR_FAILURE) {
fprintf(stderr, "PR_Delete failed\n");
exit(1);
}
/* Tell the main thread that we are done */
InterlockedExchange(&iothread_done, 1);
}
int main()
{
PRThread *iothread;
/* Must be a global thread */
iothread = PR_CreateThread(
PR_USER_THREAD, IOThread, NULL, PR_PRIORITY_NORMAL,
PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
if (iothread == NULL) {
fprintf(stderr, "cannot create thread\n");
exit(1);
}
/*
* Block in a native blocking function.
* Give iothread 5 seconds to finish its task.
*/
Sleep(5000);
/*
* Is iothread done or is it hung?
*
* I'm actually only interested in reading the value
* of iothread_done. I'm using InterlockedExchange as
* a thread-safe way to read iothread_done.
*/
if (InterlockedExchange(&iothread_done, 1) == 0) {
fprintf(stderr, "iothread is hung\n");
fprintf(stderr, "FAILED\n");
exit(1);
}
if (PR_JoinThread(iothread) == PR_FAILURE) {
fprintf(stderr, "PR_JoinThread failed\n");
exit(1);
}
printf("PASSED\n");
return 0;
} /* main */
#endif /* WINNT */
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