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117 lines
3.0 KiB
C
117 lines
3.0 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: primblok.c
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* Purpose: testing whether the primordial thread can block in a
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* native blocking function without affecting the correct
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* functioning of NSPR I/O functions (Bugzilla bug #30746)
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*/
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#if !defined(WINNT)
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#include <stdio.h>
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int main(int argc, char **argv)
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{
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printf("This test is not relevant on this platform\n");
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return 0;
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}
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#else /* WINNT */
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#include "nspr.h"
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define TEST_FILE_NAME "primblok.dat"
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/* use InterlockedExchange to update this variable */
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static LONG iothread_done;
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static void PR_CALLBACK IOThread(void *arg)
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{
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PRFileDesc *fd;
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char buf[32];
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PRInt32 nbytes;
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/* Give the primordial thread one second to block */
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Sleep(1000);
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/*
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* See if our PR_Write call will hang when the primordial
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* thread is blocking in a native blocking function.
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*/
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fd = PR_Open(TEST_FILE_NAME, PR_WRONLY|PR_CREATE_FILE, 0666);
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if (NULL == fd) {
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fprintf(stderr, "PR_Open failed\n");
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exit(1);
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}
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memset(buf, 0xaf, sizeof(buf));
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fprintf(stderr, "iothread: calling PR_Write\n");
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nbytes = PR_Write(fd, buf, sizeof(buf));
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fprintf(stderr, "iothread: PR_Write returned\n");
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if (nbytes != sizeof(buf)) {
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fprintf(stderr, "PR_Write returned %d\n", nbytes);
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exit(1);
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}
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if (PR_Close(fd) == PR_FAILURE) {
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fprintf(stderr, "PR_Close failed\n");
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exit(1);
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}
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if (PR_Delete(TEST_FILE_NAME) == PR_FAILURE) {
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fprintf(stderr, "PR_Delete failed\n");
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exit(1);
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}
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/* Tell the main thread that we are done */
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InterlockedExchange(&iothread_done, 1);
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}
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int main(int argc, char **argv)
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{
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PRThread *iothread;
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/* Must be a global thread */
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iothread = PR_CreateThread(
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PR_USER_THREAD, IOThread, NULL, PR_PRIORITY_NORMAL,
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PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
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if (iothread == NULL) {
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fprintf(stderr, "cannot create thread\n");
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exit(1);
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}
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/*
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* Block in a native blocking function.
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* Give iothread 5 seconds to finish its task.
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*/
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Sleep(5000);
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/*
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* Is iothread done or is it hung?
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*
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* I'm actually only interested in reading the value
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* of iothread_done. I'm using InterlockedExchange as
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* a thread-safe way to read iothread_done.
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*/
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if (InterlockedExchange(&iothread_done, 1) == 0) {
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fprintf(stderr, "iothread is hung\n");
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fprintf(stderr, "FAILED\n");
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exit(1);
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}
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if (PR_JoinThread(iothread) == PR_FAILURE) {
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fprintf(stderr, "PR_JoinThread failed\n");
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exit(1);
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}
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printf("PASSED\n");
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return 0;
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} /* main */
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#endif /* WINNT */
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