David Majnemer 220c5ca8f4 Support: Don't call close again if we get EINTR ... Most Unix-like operating systems guarantee that the file descriptor is closed after a call to close(2), even if close comes back with EINTR. For these systems, calling close _again_ will either do nothing or close some other file descriptor open(2)'d by another thread. (Linux) However, some operating systems do not have this behavior. They require at least another call to close(2) before guaranteeing that the descriptor is closed. (HP-UX) And some operating systems have an unpredictable blend of the two behaviors! (xnu) Avoid this disaster by blocking all signals before we call close(2). This ensures that a signal will not be delivered to the thread and close(2) will not give us back EINTR. We restore the signal mask once the operation is done. N.B. This isn't a problem on Windows, it doesn't have a notion of EINTR because signals always get delivered to dedicated signal handling threads. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219189 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-07 05:48:40 +00:00
..
DynamicLibrary.inc	Windows/DynamicLibrary.inc: Remove 'extern "C"' in ELM_Callback.	2014-09-23 01:09:46 +00:00
explicit_symbols.inc
Host.inc	Windows/Host.inc: Reformat the header to fit 80-col.	2014-09-24 04:45:14 +00:00
Memory.inc	Remove 'using std::errro_code' from lib.	2014-06-13 02:24:39 +00:00
Mutex.inc	Rename Windows.h to WindowsSupport.h to avoid ambiguity	2014-02-12 21:26:20 +00:00
Path.inc	Misc cleanups to the FileSytem api.	2014-09-11 20:30:02 +00:00
Process.inc	Support: Don't call close again if we get EINTR	2014-10-07 05:48:40 +00:00
Program.inc	clang-format of ChangeStdinToBinary & ChangeStdoutToBinary.	2014-09-26 22:27:11 +00:00
RWMutex.inc	Rename Windows.h to WindowsSupport.h to avoid ambiguity	2014-02-12 21:26:20 +00:00
Signals.inc	Use simpler form of llvm::sys::fs::remove.	2014-02-23 13:37:37 +00:00
ThreadLocal.inc	Fix a -Wunused-local-typedefs warning	2014-07-14 22:46:45 +00:00
TimeValue.inc	Use raw_ostream and Format.h on Windows so that we don't have to roll	2014-04-28 01:57:46 +00:00
Watchdog.inc	Add a new watchdog timer interface. The interface does not permit handling timeouts, so	2013-03-26 01:27:52 +00:00
WindowsSupport.h	Add writeFileWithSystemEncoding to LibLLVMSuppor.	2014-09-03 20:02:00 +00:00