Merge branch 'vendor/GCC44'
[dragonfly.git] / contrib / binutils-2.21 / gold / dirsearch.h
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SW
1// dirsearch.h -- directory searching for gold -*- C++ -*-
2
3// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
4// Written by Ian Lance Taylor <iant@google.com>.
5
6// This file is part of gold.
7
8// This program is free software; you can redistribute it and/or modify
9// it under the terms of the GNU General Public License as published by
10// the Free Software Foundation; either version 3 of the License, or
11// (at your option) any later version.
12
13// This program is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16// GNU General Public License for more details.
17
18// You should have received a copy of the GNU General Public License
19// along with this program; if not, write to the Free Software
20// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21// MA 02110-1301, USA.
22
23#ifndef GOLD_DIRSEARCH_H
24#define GOLD_DIRSEARCH_H
25
26#include <string>
27#include <list>
28
29#include "options.h"
30#include "token.h"
31
32namespace gold
33{
34
35class General_options;
36class Workqueue;
37
38// A simple interface to manage directories to be searched for
39// libraries.
40
41class Dirsearch
42{
43 public:
44 Dirsearch()
45 : directories_(NULL), token_(true)
46 { }
47
48 // Set the list of directories to search.
49 void
50 initialize(Workqueue*, const General_options::Dir_list*);
51
52 // Search for a file, giving one or two names to search for (the
53 // second one may be empty). Return a full path name for the file,
54 // or the empty string if it could not be found. This may only be
55 // called if the token is not blocked. Set *IS_IN_SYSROOT if the
56 // file was found in a directory which is in the sysroot. *PINDEX
57 // should be set to zero the first time this is called; it will be
58 // updated with the index of the directory where the file is found,
59 // and that value plus one may be used to find the next file with
60 // the same name(s).
61 std::string
62 find(const std::string&, const std::string& n2, bool* is_in_sysroot,
63 int* pindex) const;
64
65 // Return the blocker token which controls access.
66 Task_token*
67 token()
68 { return &this->token_; }
69
70 private:
71 // We can not copy this class.
72 Dirsearch(const Dirsearch&);
73 Dirsearch& operator=(const Dirsearch&);
74
75 // Directories to search.
76 const General_options::Dir_list* directories_;
77 // Blocker token to control access from tasks.
78 Task_token token_;
79};
80
81} // End namespace gold.
82
83#endif // !defined(GOLD_DIRSEARCH_H)