The Tor Browser / file comparison
comparison: nsprpub/pr/include/prcmon.h
nsprpub/pr/include/prcmon.h
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
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| -1:000000000000 | 0:6ccf12cb9bd3 |
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| 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 #ifndef prcmon_h___ | |
| 7 #define prcmon_h___ | |
| 8 | |
| 9 /* | |
| 10 ** Interface to cached monitors. Cached monitors use an address to find a | |
| 11 ** given PR monitor. In this way a monitor can be associated with another | |
| 12 ** object without preallocating a monitor for all objects. | |
| 13 ** | |
| 14 ** A hash table is used to quickly map addresses to individual monitors | |
| 15 ** and the system automatically grows the hash table as needed. | |
| 16 ** | |
| 17 ** Cache monitors are about 5 times slower to use than uncached monitors. | |
| 18 */ | |
| 19 #include "prmon.h" | |
| 20 #include "prinrval.h" | |
| 21 | |
| 22 PR_BEGIN_EXTERN_C | |
| 23 | |
| 24 /** | |
| 25 ** Like PR_EnterMonitor except use the "address" to find a monitor in the | |
| 26 ** monitor cache. If successful, returns the PRMonitor now associated | |
| 27 ** with "address". Note that you must PR_CExitMonitor the address to | |
| 28 ** release the monitor cache entry (otherwise the monitor cache will fill | |
| 29 ** up). This call will return NULL if the monitor cache needs to be | |
| 30 ** expanded and the system is out of memory. | |
| 31 */ | |
| 32 NSPR_API(PRMonitor*) PR_CEnterMonitor(void *address); | |
| 33 | |
| 34 /* | |
| 35 ** Like PR_ExitMonitor except use the "address" to find a monitor in the | |
| 36 ** monitor cache. | |
| 37 */ | |
| 38 NSPR_API(PRStatus) PR_CExitMonitor(void *address); | |
| 39 | |
| 40 /* | |
| 41 ** Like PR_Wait except use the "address" to find a monitor in the | |
| 42 ** monitor cache. | |
| 43 */ | |
| 44 NSPR_API(PRStatus) PR_CWait(void *address, PRIntervalTime timeout); | |
| 45 | |
| 46 /* | |
| 47 ** Like PR_Notify except use the "address" to find a monitor in the | |
| 48 ** monitor cache. | |
| 49 */ | |
| 50 NSPR_API(PRStatus) PR_CNotify(void *address); | |
| 51 | |
| 52 /* | |
| 53 ** Like PR_NotifyAll except use the "address" to find a monitor in the | |
| 54 ** monitor cache. | |
| 55 */ | |
| 56 NSPR_API(PRStatus) PR_CNotifyAll(void *address); | |
| 57 | |
| 58 /* | |
| 59 ** Set a callback to be invoked each time a monitor is recycled from the cache | |
| 60 ** freelist, with the monitor's cache-key passed in address. | |
| 61 */ | |
| 62 NSPR_API(void) PR_CSetOnMonitorRecycle(void (PR_CALLBACK *callback)(void *address)); | |
| 63 | |
| 64 PR_END_EXTERN_C | |
| 65 | |
| 66 #endif /* prcmon_h___ */ |
