1 //===-- llvm/Support/Threading.h - Control multithreading mode --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares helper functions for running LLVM in a multi-threaded
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_SUPPORT_THREADING_H
16 #define LLVM_SUPPORT_THREADING_H
19 /// Returns true if LLVM is compiled with support for multi-threading, and
21 bool llvm_is_multithreaded();
23 /// llvm_execute_on_thread - Execute the given \p UserFn on a separate
24 /// thread, passing it the provided \p UserData and waits for thread
27 /// This function does not guarantee that the code will actually be executed
28 /// on a separate thread or honoring the requested stack size, but tries to do
29 /// so where system support is available.
31 /// \param UserFn - The callback to execute.
32 /// \param UserData - An argument to pass to the callback function.
33 /// \param RequestedStackSize - If non-zero, a requested size (in bytes) for
35 void llvm_execute_on_thread(void (*UserFn)(void*), void *UserData,
36 unsigned RequestedStackSize = 0);