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78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
//===- lib/Support/ErrorHandling.cpp - Callbacks for errors ---------------===//
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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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//
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// This file defines an API used to indicate fatal error conditions. Non-fatal
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// errors (most of them) should be handled through LLVMContext.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/System/Signals.h"
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#include "llvm/System/Threading.h"
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#include <cassert>
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#include <cstdlib>
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using namespace llvm;
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using namespace std;
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static fatal_error_handler_t ErrorHandler = 0;
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static void *ErrorHandlerUserData = 0;
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void llvm::install_fatal_error_handler(fatal_error_handler_t handler,
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void *user_data) {
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assert(!llvm_is_multithreaded() &&
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"Cannot register error handlers after starting multithreaded mode!\n");
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assert(!ErrorHandler && "Error handler already registered!\n");
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ErrorHandler = handler;
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ErrorHandlerUserData = user_data;
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}
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void llvm::remove_fatal_error_handler() {
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ErrorHandler = 0;
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}
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void llvm::report_fatal_error(const char *reason) {
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report_fatal_error(Twine(reason));
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}
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void llvm::report_fatal_error(const std::string &reason) {
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report_fatal_error(Twine(reason));
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}
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void llvm::report_fatal_error(const Twine &reason) {
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if (!ErrorHandler) {
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errs() << "LLVM ERROR: " << reason << "\n";
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} else {
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ErrorHandler(ErrorHandlerUserData, reason.str());
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}
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// If we reached here, we are failing ungracefully. Run the interrupt handlers
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// to make sure any special cleanups get done, in particular that we remove
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// files registered with RemoveFileOnSignal.
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sys::RunInterruptHandlers();
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exit(1);
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}
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void llvm::llvm_unreachable_internal(const char *msg, const char *file,
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unsigned line) {
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// This code intentionally doesn't call the ErrorHandler callback, because
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// llvm_unreachable is intended to be used to indicate "impossible"
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// situations, and not legitimate runtime errors.
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if (msg)
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dbgs() << msg << "\n";
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dbgs() << "UNREACHABLE executed";
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if (file)
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dbgs() << " at " << file << ":" << line;
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dbgs() << "!\n";
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abort();
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}
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