#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringRef.h"
-#include "llvm/Support/system_error.h"
+#include <system_error>
#include <utility> // for std::pair
namespace llvm {
-
/// \brief Class that manages the creation of a lock file to aid
/// implicit coordination between different processes.
///
LFS_Error
};
+ /// \brief Describes the result of waiting for the owner to release the lock.
+ enum WaitForUnlockResult {
+ /// \brief The lock was released successfully.
+ Res_Success,
+ /// \brief Owner died while holding the lock.
+ Res_OwnerDied,
+ /// \brief Reached timeout while waiting for the owner to release the lock.
+ Res_Timeout
+ };
+
private:
+ SmallString<128> FileName;
SmallString<128> LockFileName;
SmallString<128> UniqueLockFileName;
Optional<std::pair<std::string, int> > Owner;
- Optional<error_code> Error;
+ Optional<std::error_code> Error;
LockFileManager(const LockFileManager &) LLVM_DELETED_FUNCTION;
LockFileManager &operator=(const LockFileManager &) LLVM_DELETED_FUNCTION;
operator LockFileState() const { return getState(); }
/// \brief For a shared lock, wait until the owner releases the lock.
- void waitForUnlock();
+ WaitForUnlockResult waitForUnlock();
};
} // end namespace llvm