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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmFileLock.h"
#include "cmFileLockResult.h"
#include <cassert>
// Common implementation
cmFileLock::~cmFileLock()
{
if (!this->Filename.empty()) {
const cmFileLockResult result = this->Release();
static_cast<void>(result);
assert(result.IsOk());
}
}
cmFileLockResult cmFileLock::Lock(const std::string& filename,
unsigned long timeout)
{
if (filename.empty()) {
// Error is internal since all the directories and file must be created
// before actual lock called.
return cmFileLockResult::MakeInternal();
}
if (!this->Filename.empty()) {
// Error is internal since double-lock must be checked in class
// cmFileLockPool by the cmFileLock::IsLocked method.
return cmFileLockResult::MakeInternal();
}
this->Filename = filename;
cmFileLockResult result = this->OpenFile();
if (result.IsOk()) {
if (timeout == static_cast<unsigned long>(-1)) {
result = this->LockWithoutTimeout();
} else {
result = this->LockWithTimeout(timeout);
}
}
if (!result.IsOk()) {
this->Filename.clear();
}
return result;
}
bool cmFileLock::IsLocked(const std::string& filename) const
{
return filename == this->Filename;
}
#if defined(_WIN32)
# include "cmFileLockWin32.cxx"
#else
# include "cmFileLockUnix.cxx"
#endif
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