| //===- lib/Support/ErrorHandling.cpp - Callbacks for errors -----*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines an API for error handling, it supersedes cerr+abort(), and |
| // cerr+exit() style error handling. |
| // Callbacks can be registered for these errors through this API. |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/System/Threading.h" |
| #include <cassert> |
| #include <cstdlib> |
| |
| using namespace llvm; |
| using namespace std; |
| |
| static llvm_error_handler_t ErrorHandler = 0; |
| static void *ErrorHandlerUserData = 0; |
| |
| namespace llvm { |
| void llvm_install_error_handler(llvm_error_handler_t handler, |
| void *user_data) { |
| assert(!llvm_is_multithreaded() && |
| "Cannot register error handlers after starting multithreaded mode!\n"); |
| assert(!ErrorHandler && "Error handler already registered!\n"); |
| ErrorHandler = handler; |
| ErrorHandlerUserData = user_data; |
| } |
| |
| void llvm_remove_error_handler() { |
| ErrorHandler = 0; |
| } |
| |
| void llvm_report_error(const char *reason) { |
| llvm_report_error(Twine(reason)); |
| } |
| |
| void llvm_report_error(const std::string &reason) { |
| llvm_report_error(Twine(reason)); |
| } |
| |
| void llvm_report_error(const Twine &reason) { |
| if (!ErrorHandler) { |
| errs() << "LLVM ERROR: " << reason << "\n"; |
| } else { |
| ErrorHandler(ErrorHandlerUserData, reason.str()); |
| } |
| exit(1); |
| } |
| |
| void llvm_unreachable_internal(const char *msg, const char *file, |
| unsigned line) { |
| // This code intentionally doesn't call the ErrorHandler callback, because |
| // llvm_unreachable is intended to be used to indicate "impossible" |
| // situations, and not legitimate runtime errors. |
| if (msg) |
| errs() << msg << "\n"; |
| errs() << "UNREACHABLE executed"; |
| if (file) |
| errs() << " at " << file << ":" << line; |
| errs() << "!\n"; |
| abort(); |
| } |
| } |
| |