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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* | |
| 3 * The contents of this file are subject to the Mozilla Public | |
| 4 * License Version 1.1 (the "License"); you may not use this file | |
| 5 * except in compliance with the License. You may obtain a copy of | |
| 6 * the License at http://www.mozilla.org/MPL/ | |
| 7 * | |
| 8 * Software distributed under the License is distributed on an "AS | |
| 9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
| 10 * implied. See the License for the specific language governing | |
| 11 * rights and limitations under the License. | |
| 12 * | |
| 13 * The Original Code is the Netscape Portable Runtime (NSPR). | |
| 14 * | |
| 15 * The Initial Developer of the Original Code is Netscape | |
| 16 * Communications Corporation. Portions created by Netscape are | |
| 17 * Copyright (C) 1998-2000 Netscape Communications Corporation. All | |
| 18 * Rights Reserved. | |
| 19 * | |
| 20 * Contributor(s): | |
| 21 * | |
| 22 * Alternatively, the contents of this file may be used under the | |
| 23 * terms of the GNU General Public License Version 2 or later (the | |
| 24 * "GPL"), in which case the provisions of the GPL are applicable | |
| 25 * instead of those above. If you wish to allow use of your | |
| 26 * version of this file only under the terms of the GPL and not to | |
| 27 * allow others to use your version of this file under the MPL, | |
| 28 * indicate your decision by deleting the provisions above and | |
| 29 * replace them with the notice and other provisions requiored by | |
| 30 * the GPL. If you do not delete the provisions above, a recipient | |
| 31 * may use your version of this file under either the MPL or the | |
| 32 * GPL. | |
| 33 */ | |
| 34 | |
| 35 #ifndef prolock_h___ | |
| 36 #define prolock_h___ | |
| 37 | |
| 38 #include "prtypes.h" | |
| 39 | |
| 40 PR_BEGIN_EXTERN_C | |
| 41 | |
| 42 /* | |
| 43 ** A locking mechanism, built on the existing PRLock definiion, | |
| 44 ** is provided that will permit applications to define a Lock | |
| 45 ** Hierarchy (or Lock Ordering) schema. An application designed | |
| 46 ** using the Ordered Lock functions will terminate with a | |
| 47 ** diagnostic message when a lock inversion condition is | |
| 48 ** detected. | |
| 49 ** | |
| 50 ** The lock ordering detection is complile-time enabled only. in | |
| 51 ** optimized builds of NSPR, the Ordered Lock functions map | |
| 52 ** directly to PRLock functions, providing no lock order | |
| 53 ** detection. | |
| 54 ** | |
| 55 ** The Ordered Lock Facility is compiled in when DEBUG is defined at | |
| 56 ** compile time. Ordered Lock can be forced on in optimized builds by | |
| 57 ** defining FORCE_NSPR_ORDERED_LOCK at compile time. Both the | |
| 58 ** application using Ordered Lock and NSPR must be compiled with the | |
| 59 ** facility enabled to achieve the desired results. | |
| 60 ** | |
| 61 ** Application designers should use the macro interfaces to the Ordered | |
| 62 ** Lock facility to ensure that it is compiled out in optimized builds. | |
| 63 ** | |
| 64 ** Application designers are responsible for defining their own | |
| 65 ** lock hierarchy. | |
| 66 ** | |
| 67 ** Ordered Lock is thread-safe and SMP safe. | |
| 68 ** | |
| 69 ** See Also: prlock.h | |
| 70 ** | |
| 71 ** /lth. 10-Jun-1998. | |
| 72 ** | |
| 73 */ | |
| 74 | |
| 75 /* | |
| 76 ** Opaque type for ordered lock. | |
| 77 ** ... Don't even think of looking in here. | |
| 78 ** | |
| 79 */ | |
| 80 | |
| 81 #if defined(DEBUG) || defined(FORCE_NSPR_ORDERED_LOCKS) | |
| 82 typedef void * PROrderedLock; | |
| 83 #else | |
| 84 /* | |
| 85 ** Map PROrderedLock and methods onto PRLock when ordered locking | |
| 86 ** is not compiled in. | |
| 87 ** | |
| 88 */ | |
| 89 #include "prlock.h" | |
| 90 | |
| 91 typedef PRLock PROrderedLock; | |
| 92 #endif | |
| 93 | |
| 94 /* ----------------------------------------------------------------------- | |
| 95 ** FUNCTION: PR_CreateOrderedLock() -- Create an Ordered Lock | |
| 96 ** | |
| 97 ** DESCRIPTION: PR_CreateOrderedLock() creates an ordered lock. | |
| 98 ** | |
| 99 ** INPUTS: | |
| 100 ** order: user defined order of this lock. | |
| 101 ** name: name of the lock. For debugging purposes. | |
| 102 ** | |
| 103 ** OUTPUTS: returned | |
| 104 ** | |
| 105 ** RETURNS: PR_OrderedLock pointer | |
| 106 ** | |
| 107 ** RESTRICTIONS: | |
| 108 ** | |
| 109 */ | |
| 110 #if defined(DEBUG) || defined(FORCE_NSPR_ORDERED_LOCKS) | |
| 111 #define PR_CREATE_ORDERED_LOCK(order,name)\ | |
| 112 PR_CreateOrderedLock((order),(name)) | |
| 113 #else | |
| 114 #define PR_CREATE_ORDERED_LOCK(order) PR_NewLock() | |
| 115 #endif | |
| 116 | |
| 117 NSPR_API(PROrderedLock *) | |
| 118 PR_CreateOrderedLock( | |
| 119 PRInt32 order, | |
| 120 const char *name | |
| 121 ); | |
| 122 | |
| 123 /* ----------------------------------------------------------------------- | |
| 124 ** FUNCTION: PR_DestroyOrderedLock() -- Destroy an Ordered Lock | |
| 125 ** | |
| 126 ** DESCRIPTION: PR_DestroyOrderedLock() destroys the ordered lock | |
| 127 ** referenced by lock. | |
| 128 ** | |
| 129 ** INPUTS: lock: pointer to a PROrderedLock | |
| 130 ** | |
| 131 ** OUTPUTS: the lock is destroyed | |
| 132 ** | |
| 133 ** RETURNS: void | |
| 134 ** | |
| 135 ** RESTRICTIONS: | |
| 136 ** | |
| 137 */ | |
| 138 #if defined(DEBUG) || defined(FORCE_NSPR_ORDERED_LOCKS) | |
| 139 #define PR_DESTROY_ORDERED_LOCK(lock) PR_DestroyOrderedLock((lock)) | |
| 140 #else | |
| 141 #define PR_DESTROY_ORDERED_LOCK(lock) PR_DestroyLock((lock)) | |
| 142 #endif | |
| 143 | |
| 144 NSPR_API(void) | |
| 145 PR_DestroyOrderedLock( | |
| 146 PROrderedLock *lock | |
| 147 ); | |
| 148 | |
| 149 /* ----------------------------------------------------------------------- | |
| 150 ** FUNCTION: PR_LockOrderedLock() -- Lock an ordered lock | |
| 151 ** | |
| 152 ** DESCRIPTION: PR_LockOrderedLock() locks the ordered lock | |
| 153 ** referenced by lock. If the order of lock is less than or equal | |
| 154 ** to the order of the highest lock held by the locking thread, | |
| 155 ** the function asserts. | |
| 156 ** | |
| 157 ** INPUTS: lock: a pointer to a PROrderedLock | |
| 158 ** | |
| 159 ** OUTPUTS: The lock is held or the fucntion asserts. | |
| 160 ** | |
| 161 ** RETURNS: void | |
| 162 ** | |
| 163 ** RESTRICTIONS: | |
| 164 ** | |
| 165 */ | |
| 166 #if defined(DEBUG) || defined(FORCE_NSPR_ORDERED_LOCKS) | |
| 167 #define PR_LOCK_ORDERED_LOCK(lock) PR_LockOrderedLock((lock)) | |
| 168 #else | |
| 169 #define PR_LOCK_ORDERED_LOCK(lock) PR_Lock((lock)) | |
| 170 #endif | |
| 171 | |
| 172 NSPR_API(void) | |
| 173 PR_LockOrderedLock( | |
| 174 PROrderedLock *lock | |
| 175 ); | |
| 176 | |
| 177 /* ----------------------------------------------------------------------- | |
| 178 ** FUNCTION: PR_UnlockOrderedLock() -- unlock and Ordered Lock | |
| 179 ** | |
| 180 ** DESCRIPTION: PR_UnlockOrderedLock() unlocks the lock referenced | |
| 181 ** by lock. | |
| 182 ** | |
| 183 ** INPUTS: lock: a pointer to a PROrderedLock | |
| 184 ** | |
| 185 ** OUTPUTS: the lock is unlocked | |
| 186 ** | |
| 187 ** RETURNS: | |
| 188 ** PR_SUCCESS | |
| 189 ** PR_FAILURE | |
| 190 ** | |
| 191 ** RESTRICTIONS: | |
| 192 ** | |
| 193 */ | |
| 194 #if defined(DEBUG) || defined(FORCE_NSPR_ORDERED_LOCKS) | |
| 195 #define PR_UNLOCK_ORDERED_LOCK(lock) PR_UnlockOrderedLock((lock)) | |
| 196 #else | |
| 197 #define PR_UNLOCK_ORDERED_LOCK(lock) PR_Unlock((lock)) | |
| 198 #endif | |
| 199 | |
| 200 NSPR_API(PRStatus) | |
| 201 PR_UnlockOrderedLock( | |
| 202 PROrderedLock *lock | |
| 203 ); | |
| 204 | |
| 205 PR_END_EXTERN_C | |
| 206 | |
| 207 #endif /* prolock_h___ */ | |
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Chromium Code Reviews
Issue 665543002:
Remove third_party/npapi/npspy. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master