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Mon Dec 20 19:02:31 2010 UTC (14 years, 2 months ago) by amb
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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. |