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Use simpler version of sys::fs::exists when possible. 

llvm-svn: 201289
This commit is contained in:
Rafael Espindola 2014-02-13 04:00:35 +00:00
parent 5fd0c9d032
commit 9e7a638be1
1 changed files with 3 additions and 5 deletions
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8
llvm/lib/Support/LockFileManager.cpp
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@ -31,8 +31,7 @@ Optional<std::pair<std::string, int> >
LockFileManager::readLockFile(StringRef LockFileName) {
// Check whether the lock file exists. If not, clearly there's nothing
// to read, so we just return.
bool Exists = false;
if (sys::fs::exists(LockFileName, Exists) || !Exists)
if (!sys::fs::exists(LockFileName))
return None;
// Read the owning host and PID out of the lock file. If it appears that the
@ -189,23 +188,22 @@ void LockFileManager::waitForUnlock() {
#else
nanosleep(&Interval, NULL);
#endif
bool Exists = false;
bool LockFileJustDisappeared = false;
// If the lock file is still expected to be there, check whether it still
// is.
if (!LockFileGone) {
bool Exists;
if (!sys::fs::exists(LockFileName.str(), Exists) && !Exists) {
LockFileGone = true;
LockFileJustDisappeared = true;
Exists = false;
}
}
// If the lock file is no longer there, check if the original file is
// available now.
if (LockFileGone) {
if (!sys::fs::exists(FileName.str(), Exists) && Exists) {
if (sys::fs::exists(FileName.str())) {
return;
}