79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
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/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2014 Ruslan Baratov
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmFileLock.h"
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#include <assert.h>
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#include "cmFileLockResult.h"
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// Common implementation
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cmFileLock::~cmFileLock()
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{
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if (!this->Filename.empty())
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{
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const cmFileLockResult result = this->Release();
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static_cast<void>(result);
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assert(result.IsOk());
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}
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}
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cmFileLockResult cmFileLock::Lock(
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const std::string& filename, unsigned timeout)
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{
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if (filename.empty())
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{
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// Error is internal since all the directories and file must be created
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// before actual lock called.
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return cmFileLockResult::MakeInternal();
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}
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if (!this->Filename.empty())
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{
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// Error is internal since double-lock must be checked in class
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// cmFileLockPool by the cmFileLock::IsLocked method.
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return cmFileLockResult::MakeInternal();
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}
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this->Filename = filename;
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cmFileLockResult result = this->OpenFile();
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if (result.IsOk())
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{
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if (timeout == static_cast<unsigned>(-1))
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{
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result = this->LockWithoutTimeout();
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}
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else
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{
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result = this->LockWithTimeout(timeout);
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}
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}
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if (!result.IsOk())
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{
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this->Filename = "";
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}
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return result;
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}
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bool cmFileLock::IsLocked(const std::string& filename) const
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{
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return filename == this->Filename;
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}
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#if defined(_WIN32)
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# include "cmFileLockWin32.cxx"
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#else
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# include "cmFileLockUnix.cxx"
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#endif
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