forked from OSchip/llvm-project
102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
//===- Error.cpp ----------------------------------------------------------===//
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//
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// The LLVM Linker
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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 "Error.h"
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#include "Config.h"
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#include "llvm/ADT/Twine.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/Process.h"
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#include "llvm/Support/raw_ostream.h"
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#include <mutex>
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#if !defined(_MSC_VER) && !defined(__MINGW32__)
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#include <unistd.h>
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#endif
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using namespace llvm;
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namespace lld {
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// The functions defined in this file can be called from multiple threads,
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// but outs() or errs() are not thread-safe. We protect them using a mutex.
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static std::mutex Mu;
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namespace coff {
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StringRef Argv0;
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uint64_t ErrorCount;
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raw_ostream *ErrorOS;
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static LLVM_ATTRIBUTE_NORETURN void exitLld(int Val) {
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// Dealloc/destroy ManagedStatic variables before calling
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// _exit(). In a non-LTO build, this is a nop. In an LTO
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// build allows us to get the output of -time-passes.
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llvm_shutdown();
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outs().flush();
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errs().flush();
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_exit(Val);
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}
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static void print(StringRef S, raw_ostream::Colors C) {
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*ErrorOS << Argv0 + ": ";
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if (Config->ColorDiagnostics) {
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ErrorOS->changeColor(C, true);
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*ErrorOS << S;
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ErrorOS->resetColor();
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} else {
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*ErrorOS << S;
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}
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}
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void error(const Twine &Msg) {
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std::lock_guard<std::mutex> Lock(Mu);
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if (Config->ErrorLimit == 0 || ErrorCount < Config->ErrorLimit) {
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print("error: ", raw_ostream::RED);
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*ErrorOS << Msg << "\n";
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} else if (ErrorCount == Config->ErrorLimit) {
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print("error: ", raw_ostream::RED);
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*ErrorOS << "too many errors emitted, stopping now"
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<< " (use -error-limit=0 to see all errors)\n";
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exitLld(1);
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}
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++ErrorCount;
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}
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void fatal(const Twine &Msg) {
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if (Config->ColorDiagnostics) {
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errs().changeColor(raw_ostream::RED, /*bold=*/true);
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errs() << "error: ";
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errs().resetColor();
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} else {
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errs() << "error: ";
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}
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errs() << Msg << "\n";
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exitLld(1);
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}
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void fatal(std::error_code EC, const Twine &Msg) {
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fatal(Msg + ": " + EC.message());
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}
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void fatal(llvm::Error &Err, const Twine &Msg) {
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fatal(errorToErrorCode(std::move(Err)), Msg);
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}
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void warn(const Twine &Msg) {
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std::lock_guard<std::mutex> Lock(Mu);
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print("warning: ", raw_ostream::MAGENTA);
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*ErrorOS << Msg << "\n";
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}
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} // namespace coff
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} // namespace lld
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