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| author | David Blaikie <dblaikie@gmail.com> | 2013-02-21 00:27:28 +0000 |
|---|---|---|
| committer | David Blaikie <dblaikie@gmail.com> | 2013-02-21 00:27:28 +0000 |
| commit | 5c43245bf459c77077b607e1b55e6928cfbe464e (patch) | |
| tree | 82fed71a9b20a0c1b252d28969f293179656996c /lib/Support/LockFileManager.cpp | |
| parent | 06ab2c828a5605abec36eb0d6749940fa6eb7391 (diff) | |
| download | llvm-5c43245bf459c77077b607e1b55e6928cfbe464e.tar.gz llvm-5c43245bf459c77077b607e1b55e6928cfbe464e.tar.bz2 llvm-5c43245bf459c77077b607e1b55e6928cfbe464e.tar.xz | |
Provide a "None" value for convenience when using Optional<T>()
This implementation of NoneType/None does have some holes but I haven't
found one that doesn't - open to improvement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175696 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/LockFileManager.cpp')
| -rw-r--r-- | lib/Support/LockFileManager.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Support/LockFileManager.cpp b/lib/Support/LockFileManager.cpp index 31eec751b7..92d8b83cf9 100644 --- a/lib/Support/LockFileManager.cpp +++ b/lib/Support/LockFileManager.cpp @@ -31,7 +31,7 @@ LockFileManager::readLockFile(StringRef LockFileName) { // to read, so we just return. bool Exists = false; if (sys::fs::exists(LockFileName, Exists) || !Exists) - return Optional<std::pair<std::string, int> >(); + return None; // Read the owning host and PID out of the lock file. If it appears that the // owning process is dead, the lock file is invalid. @@ -45,7 +45,7 @@ LockFileManager::readLockFile(StringRef LockFileName) { // Delete the lock file. It's invalid anyway. bool Existed; sys::fs::remove(LockFileName, Existed); - return Optional<std::pair<std::string, int> >(); + return None; } bool LockFileManager::processStillExecuting(StringRef Hostname, int PID) { |