139 lines
4.0 KiB
C++
139 lines
4.0 KiB
C++
// errors.h -- handle errors for gold -*- C++ -*-
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// Copyright (C) 2006-2017 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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#ifndef GOLD_ERRORS_H
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#define GOLD_ERRORS_H
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#include <cstdarg>
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#include "gold-threads.h"
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namespace gold
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{
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class Symbol;
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template<int size, bool big_endian>
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struct Relocate_info;
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// This class handles errors for gold. There is a single instance
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// which is used by all threads. If and when we make the gold code
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// more amenable to being used in a library, we will make this an
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// abstract interface class, and expect the caller to provide their
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// own instantiation.
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class Errors
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{
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public:
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Errors(const char* program_name);
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// Report a fatal error. After printing the error, this must exit.
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void
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fatal(const char* format, va_list) ATTRIBUTE_NORETURN;
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// Report a fallback error. After printing the error, this must exit
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// with a special status code indicating that fallback to
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// --incremental-full is required.
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void
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fallback(const char* format, va_list) ATTRIBUTE_NORETURN;
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// Report an error and continue.
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void
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error(const char* format, va_list);
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// Report a warning and continue.
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void
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warning(const char* format, va_list);
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// Print an informational message and continue.
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void
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info(const char* format, va_list);
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// Report an error at a reloc location.
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template<int size, bool big_endian>
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void
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error_at_location(const Relocate_info<size, big_endian>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, va_list);
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// Report a warning at a reloc location.
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template<int size, bool big_endian>
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void
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warning_at_location(const Relocate_info<size, big_endian>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, va_list);
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// Issue an undefined symbol error. LOCATION is the location of
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// the error (typically an object file name or relocation info).
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void
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undefined_symbol(const Symbol* sym, const std::string& location);
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// Report a debugging message.
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void
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debug(const char* format, ...) ATTRIBUTE_PRINTF_2;
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// Return the number of errors.
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int
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error_count() const
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{ return this->error_count_; }
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// Return the number of warnings.
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int
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warning_count() const
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{ return this->warning_count_; }
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private:
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Errors(const Errors&);
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Errors& operator=(const Errors&);
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// Initialize the lock. We don't do this in the constructor because
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// lock initialization wants to know whether we are using threads or
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// not. This returns true if the lock is now initialized.
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bool
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initialize_lock();
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// Increment a counter, holding the lock.
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void
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increment_counter(int*);
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// The number of times we report an undefined symbol.
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static const int max_undefined_error_report = 5;
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// The name of the program.
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const char* program_name_;
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// This class can be accessed from multiple threads. This lock is
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// used to control access to the data structures.
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Lock* lock_;
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// Used to initialize the lock_ field exactly once.
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Initialize_lock initialize_lock_;
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// Numbers of errors reported.
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int error_count_;
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// Number of warnings reported.
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int warning_count_;
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// A map counting the numbers of times we have seen an undefined
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// symbol.
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Unordered_map<const Symbol*, int> undefined_symbols_;
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};
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} // End namespace gold.
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#endif // !defined(GOLD_ERRORS_H)
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