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//===- 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/Debug.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)
dbgs() << msg << "\n";
dbgs() << "UNREACHABLE executed";
if (file)
dbgs() << " at " << file << ":" << line;
dbgs() << "!\n";
abort();
}
}
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