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61 lines
1.4 KiB
61 lines
1.4 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 "cmFileLockResult.h"
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#include <assert.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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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(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 = "";
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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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