1 //===-- llvm/Support/Threading.h - Control multithreading mode --*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file declares helper functions for running LLVM in a multi-threaded 11 // environment. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_SUPPORT_THREADING_H 16 #define LLVM_SUPPORT_THREADING_H 17 18 namespace llvm { 19 /// Returns true if LLVM is compiled with support for multi-threading, and 20 /// false otherwise. 21 bool llvm_is_multithreaded(); 22 23 /// llvm_execute_on_thread - Execute the given \p UserFn on a separate 24 /// thread, passing it the provided \p UserData. 25 /// 26 /// This function does not guarantee that the code will actually be executed 27 /// on a separate thread or honoring the requested stack size, but tries to do 28 /// so where system support is available. 29 /// 30 /// \param UserFn - The callback to execute. 31 /// \param UserData - An argument to pass to the callback function. 32 /// \param RequestedStackSize - If non-zero, a requested size (in bytes) for 33 /// the thread stack. 34 void llvm_execute_on_thread(void (*UserFn)(void*), void *UserData, 35 unsigned RequestedStackSize = 0); 36 } 37 38 #endif 39