Method Lock

Source/cmFileLock.cxx:43–73

}

cmFileLockResult cmFileLock::Lock(std::string const& 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(std::string const& filename) const
{