1 //===- InitLLVM.h -----------------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_SUPPORT_LLVM_H 10 #define LLVM_SUPPORT_LLVM_H 11 12 #include "llvm/ADT/SmallVector.h" 13 #include "llvm/Support/Allocator.h" 14 #include "llvm/Support/PrettyStackTrace.h" 15 16 // The main() functions in typical LLVM tools start with InitLLVM which does 17 // the following one-time initializations: 18 // 19 // 1. Setting up a signal handler so that pretty stack trace is printed out 20 // if a process crashes. 21 // 22 // 2. Set up the global new-handler which is called when a memory allocation 23 // attempt fails. 24 // 25 // 3. If running on Windows, obtain command line arguments using a 26 // multibyte character-aware API and convert arguments into UTF-8 27 // encoding, so that you can assume that command line arguments are 28 // always encoded in UTF-8 on any platform. 29 // 30 // InitLLVM calls llvm_shutdown() on destruction, which cleans up 31 // ManagedStatic objects. 32 namespace llvm { 33 class InitLLVM { 34 public: 35 InitLLVM(int &Argc, const char **&Argv); InitLLVM(int & Argc,char ** & Argv)36 InitLLVM(int &Argc, char **&Argv) 37 : InitLLVM(Argc, const_cast<const char **&>(Argv)) {} 38 39 ~InitLLVM(); 40 41 private: 42 BumpPtrAllocator Alloc; 43 SmallVector<const char *, 0> Args; 44 PrettyStackTraceProgram StackPrinter; 45 }; 46 } // namespace llvm 47 48 #endif 49