xref: /minix/minix/servers/ds/store.h (revision 50b7f13f)
1 #ifndef _DS_STORE_H_
2 #define _DS_STORE_H_
3 
4 /* Type definitions for the Data Store Server. */
5 #include <sys/types.h>
6 #include <minix/config.h>
7 #include <minix/ds.h>
8 #include <minix/bitmap.h>
9 #include <minix/param.h>
10 #include <regex.h>
11 
12 #define NR_DS_KEYS	(2*NR_SYS_PROCS)	/* number of entries */
13 #define NR_DS_SUBS	(4*NR_SYS_PROCS)	/* number of subscriptions */
14 
15 /* Base 'class' for the following 3 structs. */
16 struct data_store {
17 	int	flags;
18 	char	key[DS_MAX_KEYLEN];	/* key to lookup information */
19 	char	owner[DS_MAX_KEYLEN];
20 
21 	union dsi_u {
22 		unsigned u32;
23 		struct dsi_mem {
24 			void *data;
25 			size_t length;
26 			size_t reallen;
27 		} mem;
28 	} u;
29 };
30 
31 struct subscription {
32 	int		flags;
33 	char		owner[DS_MAX_KEYLEN];
34 	regex_t		regex;
35 	bitchunk_t	old_subs[BITMAP_CHUNKS(NR_DS_KEYS)];
36 };
37 
38 #endif /* _DS_STORE_H_ */
39