The Tor Browser / file comparison
comparison: nsprpub/pr/tests/primblok.c
nsprpub/pr/tests/primblok.c
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
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| -1:000000000000 | 0:6bb7a77d8c39 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* | |
| 7 * File: primblok.c | |
| 8 * Purpose: testing whether the primordial thread can block in a | |
| 9 * native blocking function without affecting the correct | |
| 10 * functioning of NSPR I/O functions (Bugzilla bug #30746) | |
| 11 */ | |
| 12 | |
| 13 #if !defined(WINNT) | |
| 14 | |
| 15 #include <stdio.h> | |
| 16 | |
| 17 int main(int argc, char **argv) | |
| 18 { | |
| 19 printf("This test is not relevant on this platform\n"); | |
| 20 return 0; | |
| 21 } | |
| 22 | |
| 23 #else /* WINNT */ | |
| 24 | |
| 25 #include "nspr.h" | |
| 26 | |
| 27 #include <windows.h> | |
| 28 #include <stdio.h> | |
| 29 #include <stdlib.h> | |
| 30 #include <string.h> | |
| 31 | |
| 32 #define TEST_FILE_NAME "primblok.dat" | |
| 33 | |
| 34 /* use InterlockedExchange to update this variable */ | |
| 35 static LONG iothread_done; | |
| 36 | |
| 37 static void PR_CALLBACK IOThread(void *arg) | |
| 38 { | |
| 39 PRFileDesc *fd; | |
| 40 char buf[32]; | |
| 41 PRInt32 nbytes; | |
| 42 | |
| 43 /* Give the primordial thread one second to block */ | |
| 44 Sleep(1000); | |
| 45 | |
| 46 /* | |
| 47 * See if our PR_Write call will hang when the primordial | |
| 48 * thread is blocking in a native blocking function. | |
| 49 */ | |
| 50 fd = PR_Open(TEST_FILE_NAME, PR_WRONLY|PR_CREATE_FILE, 0666); | |
| 51 if (NULL == fd) { | |
| 52 fprintf(stderr, "PR_Open failed\n"); | |
| 53 exit(1); | |
| 54 } | |
| 55 memset(buf, 0xaf, sizeof(buf)); | |
| 56 fprintf(stderr, "iothread: calling PR_Write\n"); | |
| 57 nbytes = PR_Write(fd, buf, sizeof(buf)); | |
| 58 fprintf(stderr, "iothread: PR_Write returned\n"); | |
| 59 if (nbytes != sizeof(buf)) { | |
| 60 fprintf(stderr, "PR_Write returned %d\n", nbytes); | |
| 61 exit(1); | |
| 62 } | |
| 63 if (PR_Close(fd) == PR_FAILURE) { | |
| 64 fprintf(stderr, "PR_Close failed\n"); | |
| 65 exit(1); | |
| 66 } | |
| 67 if (PR_Delete(TEST_FILE_NAME) == PR_FAILURE) { | |
| 68 fprintf(stderr, "PR_Delete failed\n"); | |
| 69 exit(1); | |
| 70 } | |
| 71 | |
| 72 /* Tell the main thread that we are done */ | |
| 73 InterlockedExchange(&iothread_done, 1); | |
| 74 } | |
| 75 | |
| 76 int main(int argc, char **argv) | |
| 77 { | |
| 78 PRThread *iothread; | |
| 79 | |
| 80 /* Must be a global thread */ | |
| 81 iothread = PR_CreateThread( | |
| 82 PR_USER_THREAD, IOThread, NULL, PR_PRIORITY_NORMAL, | |
| 83 PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0); | |
| 84 if (iothread == NULL) { | |
| 85 fprintf(stderr, "cannot create thread\n"); | |
| 86 exit(1); | |
| 87 } | |
| 88 | |
| 89 /* | |
| 90 * Block in a native blocking function. | |
| 91 * Give iothread 5 seconds to finish its task. | |
| 92 */ | |
| 93 Sleep(5000); | |
| 94 | |
| 95 /* | |
| 96 * Is iothread done or is it hung? | |
| 97 * | |
| 98 * I'm actually only interested in reading the value | |
| 99 * of iothread_done. I'm using InterlockedExchange as | |
| 100 * a thread-safe way to read iothread_done. | |
| 101 */ | |
| 102 if (InterlockedExchange(&iothread_done, 1) == 0) { | |
| 103 fprintf(stderr, "iothread is hung\n"); | |
| 104 fprintf(stderr, "FAILED\n"); | |
| 105 exit(1); | |
| 106 } | |
| 107 | |
| 108 if (PR_JoinThread(iothread) == PR_FAILURE) { | |
| 109 fprintf(stderr, "PR_JoinThread failed\n"); | |
| 110 exit(1); | |
| 111 } | |
| 112 printf("PASSED\n"); | |
| 113 return 0; | |
| 114 } /* main */ | |
| 115 | |
| 116 #endif /* WINNT */ |
