The Tor Browser / file comparison
comparison: xpcom/build/PoisonIOInterposer.h
xpcom/build/PoisonIOInterposer.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:be6daf6a5b7d |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* vim:set ts=4 sw=4 sts=4 ci et: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef mozilla_PoisonIOInterposer_h | |
| 8 #define mozilla_PoisonIOInterposer_h | |
| 9 | |
| 10 #include "mozilla/Types.h" | |
| 11 #include <stdio.h> | |
| 12 | |
| 13 MOZ_BEGIN_EXTERN_C | |
| 14 | |
| 15 /** Register file descriptor to be ignored by poisoning IO interposer */ | |
| 16 void MozillaRegisterDebugFD(int fd); | |
| 17 | |
| 18 /** Register file to be ignored by poisoning IO interposer */ | |
| 19 void MozillaRegisterDebugFILE(FILE *f); | |
| 20 | |
| 21 /** Unregister file descriptor from being ignored by poisoning IO interposer */ | |
| 22 void MozillaUnRegisterDebugFD(int fd); | |
| 23 | |
| 24 /** Unregister file from being ignored by poisoning IO interposer */ | |
| 25 void MozillaUnRegisterDebugFILE(FILE *f); | |
| 26 | |
| 27 MOZ_END_EXTERN_C | |
| 28 | |
| 29 #if defined(XP_WIN) || defined(XP_MACOSX) | |
| 30 | |
| 31 #ifdef __cplusplus | |
| 32 namespace mozilla { | |
| 33 | |
| 34 /** | |
| 35 * Check if a file is registered as a debug file. | |
| 36 */ | |
| 37 bool IsDebugFile(intptr_t aFileID); | |
| 38 | |
| 39 /** | |
| 40 * Initialize IO poisoning, this is only safe to do on the main-thread when no | |
| 41 * other threads are running. | |
| 42 * | |
| 43 * Please, note that this probably has performance implications as all | |
| 44 */ | |
| 45 void InitPoisonIOInterposer(); | |
| 46 | |
| 47 #ifdef XP_MACOSX | |
| 48 /** | |
| 49 * Check that writes are dirty before reporting I/O (Mac OS X only) | |
| 50 * This is necessary for late-write checks on Mac OS X, but reading the buffer | |
| 51 * from file to see if we're writing dirty bits is expensive, so we don't want | |
| 52 * to do this for everything else that uses | |
| 53 */ | |
| 54 void OnlyReportDirtyWrites(); | |
| 55 #endif /* XP_MACOSX */ | |
| 56 | |
| 57 /** | |
| 58 * Clear IO poisoning, this is only safe to do on the main-thread when no other | |
| 59 * threads are running. | |
| 60 */ | |
| 61 void ClearPoisonIOInterposer(); | |
| 62 | |
| 63 } // namespace mozilla | |
| 64 #endif /* __cplusplus */ | |
| 65 | |
| 66 #else /* XP_WIN || XP_MACOSX */ | |
| 67 | |
| 68 #ifdef __cplusplus | |
| 69 namespace mozilla { | |
| 70 inline bool IsDebugFile(intptr_t aFileID){ return true; } | |
| 71 inline void InitPoisonIOInterposer(){} | |
| 72 inline void ClearPoisonIOInterposer(){} | |
| 73 #ifdef XP_MACOSX | |
| 74 inline void OnlyReportDirtyWrites(){} | |
| 75 #endif /* XP_MACOSX */ | |
| 76 } // namespace mozilla | |
| 77 #endif /* __cplusplus */ | |
| 78 | |
| 79 #endif /* XP_WIN || XP_MACOSX */ | |
| 80 | |
| 81 #endif // mozilla_PoisonIOInterposer_h |
