gecko-dev/xpcom/build/PoisonIOInterposer.h

82 lines
2.3 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 sts=4 ci et: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_PoisonIOInterposer_h
#define mozilla_PoisonIOInterposer_h
#include "mozilla/Types.h"
#include <stdio.h>
MOZ_BEGIN_EXTERN_C
/** Register file descriptor to be ignored by poisoning IO interposer */
void MozillaRegisterDebugFD(int fd);
/** Register file to be ignored by poisoning IO interposer */
void MozillaRegisterDebugFILE(FILE *f);
/** Unregister file descriptor from being ignored by poisoning IO interposer */
void MozillaUnRegisterDebugFD(int fd);
/** Unregister file from being ignored by poisoning IO interposer */
void MozillaUnRegisterDebugFILE(FILE *f);
MOZ_END_EXTERN_C
#if defined(XP_WIN) || defined(XP_MACOSX)
#ifdef __cplusplus
namespace mozilla {
/**
* Check if a file is registered as a debug file.
*/
bool IsDebugFile(intptr_t aFileID);
/**
* Initialize IO poisoning, this is only safe to do on the main-thread when no
* other threads are running.
*
* Please, note that this probably has performance implications as all
*/
void InitPoisonIOInterposer();
#ifdef XP_MACOSX
/**
* Check that writes are dirty before reporting I/O (Mac OS X only)
* This is necessary for late-write checks on Mac OS X, but reading the buffer
* from file to see if we're writing dirty bits is expensive, so we don't want
* to do this for everything else that uses
*/
void OnlyReportDirtyWrites();
#endif /* XP_MACOSX */
/**
* Clear IO poisoning, this is only safe to do on the main-thread when no other
* threads are running.
*/
void ClearPoisonIOInterposer();
} // namespace mozilla
#endif /* __cplusplus */
#else /* XP_WIN || XP_MACOSX */
#ifdef __cplusplus
namespace mozilla {
inline bool IsDebugFile(intptr_t aFileID){ return true; }
inline void InitPoisonIOInterposer(){}
inline void ClearPoisonIOInterposer(){}
#ifdef XP_MACOSX
inline void OnlyReportDirtyWrites(){}
#endif /* XP_MACOSX */
} // namespace mozilla
#endif /* __cplusplus */
#endif /* XP_WIN || XP_MACOSX */
#endif // mozilla_PoisonIOInterposer_h