[llvm] r219288 - Unix/Process: Don't use pthread_sigmask if we aren't built with threads

[David Majnemer]

Author: majnemer
Date: Wed Oct  8 03:48:43 2014
New Revision: 219288

URL: http://llvm.org/viewvc/llvm-project?rev=219288&view=rev
Log:
Unix/Process: Don't use pthread_sigmask if we aren't built with threads

We won't link in pthreads if we weren't built with LLVM_ENABLE_THREADS
which means we won't get access to pthread_sigmask.  Use sigprocmask
instead.

Modified:
    llvm/trunk/lib/Support/Unix/Process.inc

Modified: llvm/trunk/lib/Support/Unix/Process.inc
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Unix/Process.inc?rev=219288&r1=219287&r2=219288&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Unix/Process.inc (original)
+++ llvm/trunk/lib/Support/Unix/Process.inc Wed Oct  8 03:48:43 2014
@@ -268,8 +268,13 @@ std::error_code Process::SafelyCloseFile
     return std::error_code(errno, std::generic_category());
   // Atomically swap our current signal mask with a full mask.
   sigset_t SavedSet;
+#if LLVM_ENABLE_THREADS
   if (int EC = pthread_sigmask(SIG_SETMASK, &FullSet, &SavedSet))
     return std::error_code(EC, std::generic_category());
+#else
+  if (sigprocmask(SIG_SETMASK, &FullSet, &SavedSet) < 0)
+    return std::error_code(errno, std::generic_category());
+#endif
   // Attempt to close the file descriptor.
   // We need to save the error, if one occurs, because our subsequent call to
   // pthread_sigmask might tamper with errno.
@@ -277,7 +282,13 @@ std::error_code Process::SafelyCloseFile
   if (::close(FD) < 0)
     ErrnoFromClose = errno;
   // Restore the signal mask back to what we saved earlier.
-  int EC = pthread_sigmask(SIG_SETMASK, &SavedSet, nullptr);
+  int EC = 0;
+#if LLVM_ENABLE_THREADS
+  EC = pthread_sigmask(SIG_SETMASK, &SavedSet, nullptr);
+#else
+  if (sigprocmask(SIG_SETMASK, &SavedSet, nullptr) < 0)
+    EC = errno;
+#endif
   // The error code from close takes precedence over the one from
   // pthread_sigmask.
   if (ErrnoFromClose)