Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)

[oota-llvm.git] / include / llvm / Support / Threading.h

diff --git a/include/llvm/Support/Threading.h b/include/llvm/Support/Threading.h
index 74fe745f3bbe9f90d8d2031a46215c1180821711..3cca1d6a9913f82aea1a6146f8f6474e81077ab0 100644 (file)
--- a/include/llvm/Support/Threading.h
+++ b/include/llvm/Support/Threading.h
@@ -15,21 +15,14 @@
 #ifndef LLVM_SUPPORT_THREADING_H
 #define LLVM_SUPPORT_THREADING_H
 
-#include "llvm/Config/llvm-config.h" // for LLVM_ON_UNIX
-
-#if defined(LLVM_ON_UNIX)
-#include <mutex>
-#else
-#include "llvm/Support/Atomic.h"
-#endif
-
 namespace llvm {
   /// Returns true if LLVM is compiled with support for multi-threading, and
   /// false otherwise.
   bool llvm_is_multithreaded();
 
   /// llvm_execute_on_thread - Execute the given \p UserFn on a separate
-  /// thread, passing it the provided \p UserData.
+  /// thread, passing it the provided \p UserData and waits for thread 
+  /// completion.
   ///
   /// This function does not guarantee that the code will actually be executed
   /// on a separate thread or honoring the requested stack size, but tries to do
@@ -41,34 +34,6 @@ namespace llvm {
   /// the thread stack.
   void llvm_execute_on_thread(void (*UserFn)(void*), void *UserData,
                               unsigned RequestedStackSize = 0);
-
-#if defined(LLVM_ON_UNIX)
-typedef std::once_flag once_flag;
-#define LLVM_DEFINE_ONCE_FLAG(flag) static once_flag flag
-#else
-enum InitStatus {
-  Done = -1,
-  Uninitialized = 0,
-  Wait = 1
-};
-typedef volatile sys::cas_flag once_flag;
-
-#define LLVM_DEFINE_ONCE_FLAG(flag) static once_flag flag = Uninitialized
-#endif
-
-/// \brief Execute the function specified as a parameter once.
-///
-/// Typical usage:
-/// \code
-///   void foo() {...};
-///   ...
-///   LLVM_DEFINE_ONCE_FLAG(flag);
-///   call_once(flag, foo);
-/// \endcode
-///
-/// \param flag Flag used for tracking whether or not this has run.
-/// \param UserFn Function to call once.
-void call_once(once_flag &flag, void (*UserFn)(void));
 }
 
 #endif