https://github.com/Kitware/CMake
Revision a271286f417731916cd60c546665ec030bc5b2c7 authored by Brad King on 29 January 2018, 13:04:22 UTC, committed by Kitware Robot on 29 January 2018, 13:04:28 UTC
c3d576f5 Intel: Add C++17 compiler options 4a5727d3 Intel: Correct the C11 ext flag Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !1711
Tip revision: a271286f417731916cd60c546665ec030bc5b2c7 authored by Brad King on 29 January 2018, 13:04:22 UTC
Merge topic 'intel-cxx17-flags'
Merge topic 'intel-cxx17-flags'
Tip revision: a271286
cmFileLock.h
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#ifndef cmFileLock_h
#define cmFileLock_h
#include "cmConfigure.h" // IWYU pragma: keep
#include <string>
#if defined(_WIN32)
#include <windows.h> // HANDLE
#endif
class cmFileLockResult;
/**
* @brief Cross-platform file locking.
* @details Under the hood this class use 'fcntl' for Unix-like platforms and
* 'LockFileEx'/'UnlockFileEx' for Win32 platform. Locks are exclusive and
* advisory.
*/
class cmFileLock
{
CM_DISABLE_COPY(cmFileLock)
public:
cmFileLock();
~cmFileLock();
/**
* @brief Lock the file.
* @param timeoutSec Lock timeout. If -1 try until success or fatal error.
*/
cmFileLockResult Lock(const std::string& filename, unsigned long timeoutSec);
/**
* @brief Unlock the file.
*/
cmFileLockResult Release();
/**
* @brief Check file is locked by this class.
* @details This function helps to find double locks (deadlocks) and to do
* explicit unlocks.
*/
bool IsLocked(const std::string& filename) const;
private:
cmFileLockResult OpenFile();
cmFileLockResult LockWithoutTimeout();
cmFileLockResult LockWithTimeout(unsigned long timeoutSec);
#if defined(_WIN32)
typedef HANDLE FileId;
BOOL LockFile(DWORD flags);
#else
typedef int FileId;
int LockFile(int cmd, int type);
#endif
FileId File;
std::string Filename;
};
#endif // cmFileLock_h
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