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Tue Nov 20 16:21:27 2012 UTC (12 years, 3 months ago) by amb
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Tue Nov 20 16:21:27 2012 UTC (12 years, 3 months ago) by amb
File MIME type: text/x-chdr
File size: 4393 byte(s)
Rename the '--preserve' command line option to '--keep' for simplicity.
1 | /*************************************** |
2 | A header file for the extended Ways structure. |
3 | |
4 | Part of the Routino routing software. |
5 | ******************/ /****************** |
6 | This file Copyright 2008-2012 Andrew M. Bishop |
7 | |
8 | This program is free software: you can redistribute it and/or modify |
9 | it under the terms of the GNU Affero 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 Affero General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU Affero General Public License |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
20 | ***************************************/ |
21 | |
22 | |
23 | #ifndef WAYSX_H |
24 | #define WAYSX_H /*+ To stop multiple inclusions. +*/ |
25 | |
26 | #include <stdint.h> |
27 | |
28 | #include "types.h" |
29 | |
30 | #include "typesx.h" |
31 | #include "ways.h" |
32 | |
33 | #include "files.h" |
34 | |
35 | |
36 | /* Data structures */ |
37 | |
38 | |
39 | /*+ An extended structure containing a single way. +*/ |
40 | struct _WayX |
41 | { |
42 | way_t id; /*+ The way identifier; initially the OSM value, later the Way index. +*/ |
43 | |
44 | Way way; /*+ The real way data. +*/ |
45 | }; |
46 | |
47 | |
48 | /*+ A structure containing a set of ways (memory format). +*/ |
49 | struct _WaysX |
50 | { |
51 | char *filename; /*+ The name of the intermediate file (for the WaysX). +*/ |
52 | char *filename_tmp; /*+ The name of the temporary file (for the WaysX). +*/ |
53 | |
54 | int fd; /*+ The file descriptor of the open file (for the WaysX). +*/ |
55 | |
56 | index_t number; /*+ The number of extended ways still being considered. +*/ |
57 | |
58 | #if !SLIM |
59 | |
60 | WayX *data; /*+ The extended ways data (when mapped into memory). +*/ |
61 | |
62 | #else |
63 | |
64 | WayX cached[3]; /*+ Three cached extended ways read from the file in slim mode. +*/ |
65 | index_t incache[3]; /*+ The indexes of the cached extended ways. +*/ |
66 | |
67 | #endif |
68 | |
69 | way_t *idata; /*+ The extended way IDs (sorted by ID). +*/ |
70 | |
71 | index_t *cdata; /*+ The compacted way IDs (same order as sorted ways). +*/ |
72 | |
73 | char *nfilename_tmp; /*+ The name of the temporary file (for the WaysX names). +*/ |
74 | |
75 | int nfd; /*+ The file descriptor of the temporary file (for the WaysX names). +*/ |
76 | |
77 | uint32_t nlength; /*+ The length of the string of name entries. +*/ |
78 | }; |
79 | |
80 | |
81 | /* Functions in waysx.c */ |
82 | |
83 | |
84 | WaysX *NewWayList(int append,int readonly); |
85 | void FreeWayList(WaysX *waysx,int keep); |
86 | |
87 | void AppendWayList(WaysX *waysx,way_t id,Way *way,const char *name); |
88 | void FinishWayList(WaysX *waysx); |
89 | |
90 | index_t IndexWayX(WaysX *waysx,way_t id); |
91 | |
92 | void SortWayList(WaysX *waysx); |
93 | |
94 | void ExtractWayNames(WaysX *waysx,int keep); |
95 | |
96 | void CompactWayList(WaysX *waysx,SegmentsX *segmentsx); |
97 | |
98 | void SaveWayList(WaysX *waysx,const char *filename); |
99 | |
100 | |
101 | /* Macros / inline functions */ |
102 | |
103 | #if !SLIM |
104 | |
105 | #define LookupWayX(waysx,index,position) &(waysx)->data[index] |
106 | |
107 | #define PutBackWayX(waysx,wayx) /* nop */ |
108 | |
109 | #else |
110 | |
111 | static WayX *LookupWayX(WaysX *waysx,index_t index,int position); |
112 | |
113 | static void PutBackWayX(WaysX *waysx,WayX *wayx); |
114 | |
115 | |
116 | /*++++++++++++++++++++++++++++++++++++++ |
117 | Lookup a particular extended way with the specified id from the file on disk. |
118 | |
119 | WayX *LookupWayX Returns a pointer to a cached copy of the extended way. |
120 | |
121 | WaysX *waysx The set of ways to use. |
122 | |
123 | index_t index The way index to look for. |
124 | |
125 | int position The position in the cache to use. |
126 | ++++++++++++++++++++++++++++++++++++++*/ |
127 | |
128 | static inline WayX *LookupWayX(WaysX *waysx,index_t index,int position) |
129 | { |
130 | SeekReadFile(waysx->fd,&waysx->cached[position-1],sizeof(WayX),(off_t)index*sizeof(WayX)); |
131 | |
132 | waysx->incache[position-1]=index; |
133 | |
134 | return(&waysx->cached[position-1]); |
135 | } |
136 | |
137 | |
138 | /*++++++++++++++++++++++++++++++++++++++ |
139 | Put back an extended way's data into the file on disk. |
140 | |
141 | WaysX *waysx The set of ways to use. |
142 | |
143 | WayX *wayx The extended way to be put back. |
144 | ++++++++++++++++++++++++++++++++++++++*/ |
145 | |
146 | static inline void PutBackWayX(WaysX *waysx,WayX *wayx) |
147 | { |
148 | int position1=wayx-&waysx->cached[0]; |
149 | |
150 | SeekWriteFile(waysx->fd,&waysx->cached[position1],sizeof(WayX),(off_t)waysx->incache[position1]*sizeof(WayX)); |
151 | } |
152 | |
153 | #endif /* SLIM */ |
154 | |
155 | |
156 | #endif /* WAYSX_H */ |
Properties
Name | Value |
---|---|
cvs:description | Extended ways header. |