1/* 2 * Copyright (c) 2010 Apple Inc. All rights reserved. 3 * Copyright (c) 2008 Likewise Software, Inc. All rights reserved. 4 * 5 * @APPLE_LICENSE_HEADER_START@ 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of Apple Inc. ("Apple") nor the names of its 17 * contributors may be used to endorse or promote products derived from 18 * this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * Portions of this software have been released under the following terms: 32 * 33 * (c) Copyright 1989-1993 OPEN SOFTWARE FOUNDATION, INC. 34 * (c) Copyright 1989-1993 HEWLETT-PACKARD COMPANY 35 * (c) Copyright 1989-1993 DIGITAL EQUIPMENT CORPORATION 36 * 37 * To anyone who acknowledges that this file is provided "AS IS" 38 * without any express or implied warranty: 39 * permission to use, copy, modify, and distribute this file for any 40 * purpose is hereby granted without fee, provided that the above 41 * copyright notices and this notice appears in all source code copies, 42 * and that none of the names of Open Software Foundation, Inc., Hewlett- 43 * Packard Company or Digital Equipment Corporation be used 44 * in advertising or publicity pertaining to distribution of the software 45 * without specific, written prior permission. Neither Open Software 46 * Foundation, Inc., Hewlett-Packard Company nor Digital 47 * Equipment Corporation makes any representations about the suitability 48 * of this software for any purpose. 49 * 50 * Copyright (c) 2007, Novell, Inc. All rights reserved. 51 * Redistribution and use in source and binary forms, with or without 52 * modification, are permitted provided that the following conditions 53 * are met: 54 * 55 * 1. Redistributions of source code must retain the above copyright 56 * notice, this list of conditions and the following disclaimer. 57 * 2. Redistributions in binary form must reproduce the above copyright 58 * notice, this list of conditions and the following disclaimer in the 59 * documentation and/or other materials provided with the distribution. 60 * 3. Neither the name of Novell Inc. nor the names of its contributors 61 * may be used to endorse or promote products derived from this 62 * this software without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 65 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 66 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 67 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY 68 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 69 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 70 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 71 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 72 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 73 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 74 * 75 * @APPLE_LICENSE_HEADER_END@ 76 */ 77 78#include <config.h> 79#include <errno.h> 80 81#include "dcethread-private.h" 82#include "dcethread-util.h" 83#include "dcethread-debug.h" 84 85#ifdef API 86 87int 88dcethread_interrupt(dcethread* thread) 89{ 90 dcethread__lock(thread); 91 dcethread__interrupt(thread); 92 dcethread__unlock(thread); 93 94 return dcethread__set_errno(0); 95} 96 97int 98dcethread_interrupt_throw(dcethread* thread) 99{ 100 DCETHREAD_WRAP_THROW(dcethread_interrupt(thread)); 101} 102 103#endif /* API */ 104 105#ifdef TEST 106 107#include "dcethread-test.h" 108 109static void* 110basic_thread(void* data) 111{ 112 volatile int interrupt_caught = 0; 113 114 DCETHREAD_TRY 115 { 116 MU_ASSERT(!interrupt_caught); 117 while (1) 118 { 119 dcethread_checkinterrupt(); 120 dcethread_yield(); 121 } 122 } 123 DCETHREAD_CATCH(dcethread_interrupt_e) 124 { 125 MU_ASSERT(!interrupt_caught); 126 interrupt_caught = 1; 127 } 128 DCETHREAD_ENDTRY; 129 130 MU_ASSERT(interrupt_caught); 131 132 return NULL; 133} 134 135MU_TEST(dcethread_interrupt, basic) 136{ 137 dcethread* thread; 138 139 MU_TRY_DCETHREAD( dcethread_create(&thread, NULL, basic_thread, NULL) ); 140 MU_TRY_DCETHREAD( dcethread_interrupt(thread) ); 141 MU_TRY_DCETHREAD( dcethread_join(thread, NULL) ); 142} 143 144MU_TEST(dcethread_interrupt, self) 145{ 146 volatile int interrupt_caught = 0; 147 148 DCETHREAD_TRY 149 { 150 MU_ASSERT(!interrupt_caught); 151 dcethread_interrupt(dcethread_self()); 152 dcethread_checkinterrupt(); 153 } 154 DCETHREAD_CATCH(dcethread_interrupt_e) 155 { 156 MU_ASSERT(!interrupt_caught); 157 interrupt_caught = 1; 158 } 159 DCETHREAD_ENDTRY; 160 161 MU_ASSERT(interrupt_caught); 162} 163 164MU_TEST(dcethread_interrupt, disable) 165{ 166 DCETHREAD_TRY 167 { 168 dcethread_enableinterrupt(0); 169 dcethread_interrupt(dcethread_self()); 170 dcethread_checkinterrupt(); 171 } 172 DCETHREAD_CATCH(dcethread_interrupt_e) 173 { 174 MU_ASSERT_NOT_REACHED(); 175 } 176 DCETHREAD_ENDTRY; 177} 178 179MU_TEST(dcethread_interrupt, disable_enable) 180{ 181 volatile int interrupt_caught = 0; 182 183 DCETHREAD_TRY 184 { 185 dcethread_enableinterrupt(0); 186 dcethread_interrupt(dcethread_self()); 187 dcethread_enableinterrupt(1); 188 dcethread_checkinterrupt(); 189 } 190 DCETHREAD_CATCH(dcethread_interrupt_e) 191 { 192 MU_ASSERT(!interrupt_caught); 193 interrupt_caught = 1; 194 } 195 DCETHREAD_ENDTRY; 196 197 MU_ASSERT(interrupt_caught); 198} 199 200static dcethread_mutex bug_6386_mutex = DCETHREAD_MUTEX_INITIALIZER; 201 202static void* 203bug_6386_thread(void* data) 204{ 205 MU_TRY_DCETHREAD(dcethread_mutex_lock(&bug_6386_mutex)); 206 MU_TRY_DCETHREAD(dcethread_mutex_unlock(&bug_6386_mutex)); 207 208 return data; 209} 210 211/* Test for regression of bug 6386, which causes 212 deadlock when a thread interrupted during a 213 dcethread_mutex_lock of a mutex held by 214 the interrupting thread */ 215MU_TEST(dcethread_interrupt, bug_6386) 216{ 217 dcethread* thread = NULL; 218 219 MU_TRY_DCETHREAD(dcethread_mutex_lock(&bug_6386_mutex)); 220 MU_TRY_DCETHREAD(dcethread_create(&thread, NULL, bug_6386_thread, NULL)); 221 MU_TRY_DCETHREAD(dcethread_interrupt(thread)); 222 MU_TRY_DCETHREAD(dcethread_mutex_unlock(&bug_6386_mutex)); 223 MU_TRY_DCETHREAD(dcethread_join(thread, NULL)); 224} 225 226#endif /* TEST */ 227