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87 lines
1.9 KiB
87 lines
1.9 KiB
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#include "cmFileLock.h"
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#include <cassert>
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#include <utility>
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#include "cmFileLockResult.h"
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// Common implementation
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cmFileLock::cmFileLock(cmFileLock&& other) noexcept
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{
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this->File = other.File;
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#if defined(_WIN32)
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other.File = INVALID_HANDLE_VALUE;
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#else
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other.File = -1;
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#endif
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this->Filename = std::move(other.Filename);
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}
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cmFileLock::~cmFileLock()
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{
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if (!this->Filename.empty()) {
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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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cmFileLock& cmFileLock::operator=(cmFileLock&& other) noexcept
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{
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this->File = other.File;
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#if defined(_WIN32)
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other.File = INVALID_HANDLE_VALUE;
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#else
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other.File = -1;
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#endif
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this->Filename = std::move(other.Filename);
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return *this;
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}
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cmFileLockResult cmFileLock::Lock(const std::string& filename,
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unsigned long timeout)
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{
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if (filename.empty()) {
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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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// 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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if (timeout == static_cast<unsigned long>(-1)) {
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result = this->LockWithoutTimeout();
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} else {
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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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this->Filename.clear();
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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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