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2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
144 lines
3.5 KiB
C++
144 lines
3.5 KiB
C++
//===- ErrorHandler.cpp ---------------------------------------------------===//
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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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#include "lld/Common/ErrorHandler.h"
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#include "lld/Common/Threads.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/IR/DiagnosticInfo.h"
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#include "llvm/IR/DiagnosticPrinter.h"
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#include "llvm/Support/ManagedStatic.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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using 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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// Prints "\n" or does nothing, depending on Msg contents of
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// the previous call of this function.
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static void newline(raw_ostream *ErrorOS, const Twine &Msg) {
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// True if the previous error message contained "\n".
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// We want to separate multi-line error messages with a newline.
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static bool Flag;
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if (Flag)
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*ErrorOS << "\n";
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Flag = StringRef(Msg.str()).contains('\n');
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}
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ErrorHandler &lld::errorHandler() {
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static ErrorHandler Handler;
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return Handler;
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}
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void lld::exitLld(int Val) {
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// Delete any temporary file, while keeping the memory mapping open.
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if (errorHandler().OutputBuffer)
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errorHandler().OutputBuffer->discard();
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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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void lld::diagnosticHandler(const DiagnosticInfo &DI) {
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SmallString<128> S;
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raw_svector_ostream OS(S);
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DiagnosticPrinterRawOStream DP(OS);
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DI.print(DP);
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switch (DI.getSeverity()) {
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case DS_Error:
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error(S);
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break;
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case DS_Warning:
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warn(S);
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break;
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case DS_Remark:
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case DS_Note:
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message(S);
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break;
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}
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}
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void lld::checkError(Error E) {
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handleAllErrors(std::move(E),
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[&](ErrorInfoBase &EIB) { error(EIB.message()); });
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}
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void ErrorHandler::print(StringRef S, raw_ostream::Colors C) {
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*ErrorOS << LogName << ": ";
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if (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 ErrorHandler::log(const Twine &Msg) {
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if (Verbose) {
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std::lock_guard<std::mutex> Lock(Mu);
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*ErrorOS << LogName << ": " << Msg << "\n";
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}
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}
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void ErrorHandler::message(const Twine &Msg) {
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std::lock_guard<std::mutex> Lock(Mu);
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outs() << Msg << "\n";
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outs().flush();
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}
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void ErrorHandler::warn(const Twine &Msg) {
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if (FatalWarnings) {
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error(Msg);
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return;
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}
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std::lock_guard<std::mutex> Lock(Mu);
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newline(ErrorOS, Msg);
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print("warning: ", raw_ostream::MAGENTA);
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*ErrorOS << Msg << "\n";
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}
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void ErrorHandler::error(const Twine &Msg) {
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std::lock_guard<std::mutex> Lock(Mu);
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newline(ErrorOS, Msg);
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if (ErrorLimit == 0 || ErrorCount < ErrorLimit) {
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print("error: ", raw_ostream::RED);
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*ErrorOS << Msg << "\n";
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} else if (ErrorCount == ErrorLimit) {
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print("error: ", raw_ostream::RED);
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*ErrorOS << ErrorLimitExceededMsg << "\n";
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if (ExitEarly)
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exitLld(1);
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}
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++ErrorCount;
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}
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void ErrorHandler::fatal(const Twine &Msg) {
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error(Msg);
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exitLld(1);
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}
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