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.
llvm-svn: 219288
diff --git a/llvm/lib/Support/Unix/Process.inc b/llvm/lib/Support/Unix/Process.inc
index 0d84bee..93b93ba 100644
--- a/llvm/lib/Support/Unix/Process.inc
+++ b/llvm/lib/Support/Unix/Process.inc
@@ -268,8 +268,13 @@
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 @@
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)