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Contents of /trunk/src/waysx.h

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Revision 555 - (show annotations) (download) (as text)
Mon Dec 20 19:02:31 2010 UTC (14 years, 2 months ago) by amb
File MIME type: text/x-chdr
File size: 4140 byte(s)
Close and open the files for the slim case to match the map/unmap of files for
the non-slim case.

1 /***************************************
2 $Header: /home/amb/CVS/routino/src/waysx.h,v 1.30 2010-12-20 19:02:31 amb Exp $
3
4 A header file for the extended Ways structure.
5
6 Part of the Routino routing software.
7 ******************/ /******************
8 This file Copyright 2008-2010 Andrew M. Bishop
9
10 This program is free software: you can redistribute it and/or modify
11 it under the terms of the GNU Affero General Public License as published by
12 the Free Software Foundation, either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU Affero General Public License for more details.
19
20 You should have received a copy of the GNU Affero General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 ***************************************/
23
24
25 #ifndef WAYSX_H
26 #define WAYSX_H /*+ To stop multiple inclusions. +*/
27
28 #include <stdint.h>
29
30 #include "types.h"
31
32 #include "typesx.h"
33 #include "ways.h"
34
35 #include "files.h"
36
37
38 /* Data structures */
39
40
41 /*+ An extended structure containing a single way. +*/
42 struct _WayX
43 {
44 way_t id; /*+ The way identifier; the OSM value. +*/
45
46 index_t prop; /*+ The index of the properties of the way in the compacted list. +*/
47
48 Way way; /*+ The real Way data. +*/
49 };
50
51
52 /*+ A structure containing a set of ways (memory format). +*/
53 struct _WaysX
54 {
55 char *filename; /*+ The name of the temporary file (for the WaysX). +*/
56 int fd; /*+ The file descriptor of the temporary file (for the WaysX). +*/
57
58 index_t xnumber; /*+ The number of unsorted extended ways. +*/
59
60 #if !SLIM
61
62 WayX *xdata; /*+ The extended data for the Ways (sorted). +*/
63
64 #else
65
66 WayX xcached[2]; /*+ Two cached ways read from the file in slim mode. +*/
67
68 #endif
69
70 index_t number; /*+ How many entries are still useful? +*/
71
72 index_t cnumber; /*+ How many entries are there after compacting? +*/
73
74 index_t *idata; /*+ The index of the extended data for the Ways (sorted by ID). +*/
75
76 char *nfilename; /*+ The name of the temporary file (for the names). +*/
77 int nfd; /*+ The file descriptor of the temporary file (for the names). +*/
78
79 uint32_t nlength; /*+ How long is the string of name entries? +*/
80 };
81
82
83 /* Functions */
84
85
86 WaysX *NewWayList(int append);
87 void FreeWayList(WaysX *waysx,int keep);
88
89 void SaveWayList(WaysX *waysx,const char *filename);
90
91 index_t IndexWayX(WaysX* waysx,way_t id);
92
93 void AppendWay(WaysX* waysx,way_t id,Way *way,const char *name);
94
95 void SortWayList(WaysX *waysx);
96
97 void CompactWayList(WaysX *waysx);
98
99
100 /* Macros / inline functions */
101
102 #if !SLIM
103
104 #define LookupWayX(waysx,index,position) &(waysx)->xdata[index]
105
106 #else
107
108 static WayX *LookupWayX(WaysX* waysx,index_t index,int position);
109
110
111 /*++++++++++++++++++++++++++++++++++++++
112 Lookup a particular extended way.
113
114 WayX *LookupWayX Returns a pointer to the extended way with the specified id.
115
116 WaysX* waysx The set of ways to process.
117
118 index_t index The way index to look for.
119
120 int position The position in the cache to use.
121 ++++++++++++++++++++++++++++++++++++++*/
122
123 static inline WayX *LookupWayX(WaysX* waysx,index_t index,int position)
124 {
125 SeekFile(waysx->fd,(off_t)index*sizeof(WayX));
126
127 ReadFile(waysx->fd,&waysx->xcached[position-1],sizeof(WayX));
128
129 return(&waysx->xcached[position-1]);
130 }
131
132
133 /*++++++++++++++++++++++++++++++++++++++
134 Put back an extended way.
135
136 WaysX* waysx The set of ways to process.
137
138 index_t index The way index to put back.
139
140 int position The position in the cache to use.
141 ++++++++++++++++++++++++++++++++++++++*/
142
143 static inline void PutBackWayX(WaysX* waysx,index_t index,int position)
144 {
145 SeekFile(waysx->fd,(off_t)index*sizeof(WayX));
146
147 WriteFile(waysx->fd,&waysx->xcached[position-1],sizeof(WayX));
148 }
149
150 #endif /* SLIM */
151
152
153 #endif /* WAYSX_H */

Properties

Name Value
cvs:description Extended ways header.