1 files changed, 11 insertions, 0 deletions
diff --git a/include/llvm/Support/Errno.h b/include/llvm/Support/Errno.h
index 4ce65e7dc83c..35dc1ea7cf84 100644
--- a/include/llvm/Support/Errno.h
+++ b/include/llvm/Support/Errno.h
@@ -16,6 +16,7 @@
 
 #include <cerrno>
 #include <string>
+#include <type_traits>
 
 namespace llvm {
 namespace sys {
@@ -29,6 +30,16 @@ std::string StrError();
 /// Like the no-argument version above, but uses \p errnum instead of errno.
 std::string StrError(int errnum);
 
+template <typename FailT, typename Fun, typename... Args>
+inline auto RetryAfterSignal(const FailT &Fail, const Fun &F,
+                             const Args &... As) -> decltype(F(As...)) {
+  decltype(F(As...)) Res;
+  do
+    Res = F(As...);
+  while (Res == Fail && errno == EINTR);
+  return Res;
+}
+
 }  // namespace sys
 }  // namespace llvm