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53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
//===- InitLLVM.h -----------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_INITLLVM_H
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#define LLVM_SUPPORT_INITLLVM_H
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/Support/PrettyStackTrace.h"
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// The main() functions in typical LLVM tools start with InitLLVM which does
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// the following one-time initializations:
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//
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// 1. Setting up a signal handler so that pretty stack trace is printed out
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// if a process crashes. A signal handler that exits when a failed write to
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// a pipe occurs may optionally be installed: this is on-by-default.
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//
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// 2. Set up the global new-handler which is called when a memory allocation
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// attempt fails.
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//
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// 3. If running on Windows, obtain command line arguments using a
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// multibyte character-aware API and convert arguments into UTF-8
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// encoding, so that you can assume that command line arguments are
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// always encoded in UTF-8 on any platform.
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//
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// InitLLVM calls llvm_shutdown() on destruction, which cleans up
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// ManagedStatic objects.
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namespace llvm {
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class InitLLVM {
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public:
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InitLLVM(int &Argc, const char **&Argv,
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bool InstallPipeSignalExitHandler = true);
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InitLLVM(int &Argc, char **&Argv, bool InstallPipeSignalExitHandler = true)
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: InitLLVM(Argc, const_cast<const char **&>(Argv),
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InstallPipeSignalExitHandler) {}
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~InitLLVM();
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private:
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BumpPtrAllocator Alloc;
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SmallVector<const char *, 0> Args;
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Optional<PrettyStackTraceProgram> StackPrinter;
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};
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} // namespace llvm
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#endif
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