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 defines helper functions for running LLVM in a multi-threaded
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_SUPPORT_THREADING_H
16 #define LLVM_SUPPORT_THREADING_H
18 #include "llvm/Support/Mutex.h"
21 /// llvm_get_global_lock - returns the llvm global lock object.
22 sys::Mutex &llvm_get_global_lock();
24 /// llvm_is_multithreaded - returns true if LLVM is compiled with support
25 /// for multiple threads, and false otherwise.
26 bool llvm_is_multithreaded();
28 /// llvm_execute_on_thread - Execute the given \p UserFn on a separate
29 /// thread, passing it the provided \p UserData.
31 /// This function does not guarantee that the code will actually be executed
32 /// on a separate thread or honoring the requested stack size, but tries to do
33 /// so where system support is available.
35 /// \param UserFn - The callback to execute.
36 /// \param UserData - An argument to pass to the callback function.
37 /// \param RequestedStackSize - If non-zero, a requested size (in bytes) for
39 void llvm_execute_on_thread(void (*UserFn)(void*), void *UserData,
40 unsigned RequestedStackSize = 0);