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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 required 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 /* | |
| 36 ** File: prrwlock.h | |
| 37 ** Description: API to basic reader-writer lock functions of NSPR. | |
| 38 ** | |
| 39 **/ | |
| 40 | |
| 41 #ifndef prrwlock_h___ | |
| 42 #define prrwlock_h___ | |
| 43 | |
| 44 #include "prtypes.h" | |
| 45 | |
| 46 PR_BEGIN_EXTERN_C | |
| 47 | |
| 48 /* | |
| 49 * PRRWLock -- | |
| 50 * | |
| 51 * The reader writer lock, PRRWLock, is an opaque object to the clients | |
| 52 * of NSPR. All routines operate on a pointer to this opaque entity. | |
| 53 */ | |
| 54 | |
| 55 | |
| 56 typedef struct PRRWLock PRRWLock; | |
| 57 | |
| 58 #define PR_RWLOCK_RANK_NONE 0 | |
| 59 | |
| 60 | |
| 61 /*********************************************************************** | |
| 62 ** FUNCTION: PR_NewRWLock | |
| 63 ** DESCRIPTION: | |
| 64 ** Returns a pointer to a newly created reader-writer lock object. | |
| 65 ** INPUTS: Lock rank | |
| 66 ** Lock name | |
| 67 ** OUTPUTS: void | |
| 68 ** RETURN: PRRWLock* | |
| 69 ** If the lock cannot be created because of resource constraints, NULL | |
| 70 ** is returned. | |
| 71 ** | |
| 72 ***********************************************************************/ | |
| 73 NSPR_API(PRRWLock*) PR_NewRWLock(PRUint32 lock_rank, const char *lock_name); | |
| 74 | |
| 75 /*********************************************************************** | |
| 76 ** FUNCTION: PR_DestroyRWLock | |
| 77 ** DESCRIPTION: | |
| 78 ** Destroys a given RW lock object. | |
| 79 ** INPUTS: PRRWLock *lock - Lock to be freed. | |
| 80 ** OUTPUTS: void | |
| 81 ** RETURN: None | |
| 82 ***********************************************************************/ | |
| 83 NSPR_API(void) PR_DestroyRWLock(PRRWLock *lock); | |
| 84 | |
| 85 /*********************************************************************** | |
| 86 ** FUNCTION: PR_RWLock_Rlock | |
| 87 ** DESCRIPTION: | |
| 88 ** Apply a read lock (non-exclusive) on a RWLock | |
| 89 ** INPUTS: PRRWLock *lock - Lock to be read-locked. | |
| 90 ** OUTPUTS: void | |
| 91 ** RETURN: None | |
| 92 ***********************************************************************/ | |
| 93 NSPR_API(void) PR_RWLock_Rlock(PRRWLock *lock); | |
| 94 | |
| 95 /*********************************************************************** | |
| 96 ** FUNCTION: PR_RWLock_Wlock | |
| 97 ** DESCRIPTION: | |
| 98 ** Apply a write lock (exclusive) on a RWLock | |
| 99 ** INPUTS: PRRWLock *lock - Lock to write-locked. | |
| 100 ** OUTPUTS: void | |
| 101 ** RETURN: None | |
| 102 ***********************************************************************/ | |
| 103 NSPR_API(void) PR_RWLock_Wlock(PRRWLock *lock); | |
| 104 | |
| 105 /*********************************************************************** | |
| 106 ** FUNCTION: PR_RWLock_Unlock | |
| 107 ** DESCRIPTION: | |
| 108 ** Release a RW lock. Unlocking an unlocked lock has undefined results. | |
| 109 ** INPUTS: PRRWLock *lock - Lock to unlocked. | |
| 110 ** OUTPUTS: void | |
| 111 ** RETURN: void | |
| 112 ***********************************************************************/ | |
| 113 NSPR_API(void) PR_RWLock_Unlock(PRRWLock *lock); | |
| 114 | |
| 115 PR_END_EXTERN_C | |
| 116 | |
| 117 #endif /* prrwlock_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