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197194b6c9
We have a few functions that virtually all command wants to run on process startup/shutdown. This patch adds InitLLVM class to do that all at once, so that we don't need to copy-n-paste boilerplate code to each llvm command's main() function. Differential Revision: https://reviews.llvm.org/D45602 llvm-svn: 330046
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
//===-- InitLLVM.cpp -----------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/InitLLVM.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Process.h"
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#include "llvm/Support/Signals.h"
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#include <string>
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using namespace llvm;
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InitLLVM::InitLLVM(int &Argc, const char **&Argv) : StackPrinter(Argc, Argv) {
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sys::PrintStackTraceOnErrorSignal(Argv[0]);
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#ifdef _WIN32
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// We use UTF-8 as the internal character encoding. On Windows,
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// arguments passed to main() may not be encoded in UTF-8. In order
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// to reliably detect encoding of command line arguments, we use an
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// Windows API to obtain arguments, convert them to UTF-8, and then
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// write them back to the Argv vector.
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//
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// There's probably other way to do the same thing (e.g. using
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// wmain() instead of main()), but this way seems less intrusive
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// than that.
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std::string Banner = std::string(Argv[0]) + ": ";
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ExitOnError ExitOnErr(Banner);
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ExitOnErr(errorCodeToError(
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sys::Process::GetArgumentVector(Args, makeArrayRef(Argv, Argc), Alloc)));
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// GetArgumentVector doesn't terminate the vector with a nullptr.
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// Do it to make it compatible with the real argv.
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Args.push_back(nullptr);
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Argc = Args.size() - 1;
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Argv = Args.data();
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#endif
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}
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InitLLVM::~InitLLVM() { llvm_shutdown(); }
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