91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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 handle to be ignored by poisoning IO interposer. This function
|
|
* and the corresponding UnRegister function are necessary for exchange of handles
|
|
* between binaries not using the same CRT on Windows (which happens when one of
|
|
* them links the static CRT). In such cases, giving file descriptors or FILEs
|
|
* doesn't work because _get_osfhandle fails with "invalid parameter". */
|
|
void MozillaRegisterDebugHandle(intptr_t aHandle);
|
|
|
|
/** Register file descriptor to be ignored by poisoning IO interposer */
|
|
void MozillaRegisterDebugFD(int aFd);
|
|
|
|
/** Register file to be ignored by poisoning IO interposer */
|
|
void MozillaRegisterDebugFILE(FILE* aFile);
|
|
|
|
/** Unregister file handle from being ignored by poisoning IO interposer */
|
|
void MozillaUnRegisterDebugHandle(intptr_t aHandle);
|
|
|
|
/** Unregister file descriptor from being ignored by poisoning IO interposer */
|
|
void MozillaUnRegisterDebugFD(int aFd);
|
|
|
|
/** Unregister file from being ignored by poisoning IO interposer */
|
|
void MozillaUnRegisterDebugFILE(FILE* aFile);
|
|
|
|
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
|