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 and waits for thread 25 /// completion. 26 /// 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. 30 /// 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 34 /// the thread stack. 35 void llvm_execute_on_thread(void (*UserFn)(void*), void *UserData, 36 unsigned RequestedStackSize = 0); 37 } 38 39 #endif 40