binutils-gdb/gold/dirsearch.h

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// dirsearch.h -- directory searching for gold -*- C++ -*-
// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
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#ifndef GOLD_DIRSEARCH_H
#define GOLD_DIRSEARCH_H
#include <string>
#include <list>
#include "options.h"
#include "token.h"
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namespace gold
{
class General_options;
class Workqueue;
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// A simple interface to manage directories to be searched for
// libraries.
class Dirsearch
{
public:
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Dirsearch()
: directories_(NULL), token_(true)
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{ }
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// Set the list of directories to search.
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void
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initialize(Workqueue*, const General_options::Dir_list*);
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// Search for a file, giving one or two names to search for (the
// second one may be empty). Return a full path name for the file,
// or the empty string if it could not be found. This may only be
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// called if the token is not blocked. Set *IS_IN_SYSROOT if the
// file was found in a directory which is in the sysroot.
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std::string
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find(const std::string&, const std::string& n2, bool *is_in_sysroot) const;
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// Return the blocker token which controls access.
Task_token*
token()
{ return &this->token_; }
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private:
// We can not copy this class.
Dirsearch(const Dirsearch&);
Dirsearch& operator=(const Dirsearch&);
// Directories to search.
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const General_options::Dir_list* directories_;
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// Blocker token to control access from tasks.
Task_token token_;
};
} // End namespace gold.
#endif // !defined(GOLD_DIRSEARCH_H)