1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
14 */
15
16 /*
17 * This file implements the 2008 newlocale and friends handling. It is
18 * private to libc.
19 */
20 #ifndef _LOCALEIMPL_H_
21 #define _LOCALEIMPL_H_
22
23 #ifndef _LCONV_C99
24 #define _LCONV_C99 /* so we get all the extensions */
25 #endif
26
27 #include <sys/types.h>
28 #include <locale.h>
29 #include <xlocale.h>
30 #include "setlocale.h"
31 #include "runetype.h"
32
33 /* private locale structures */
34
35 /*
36 * Because some locale data is rather ahem.. large, we would like to keep
37 * reference counts on it. We create an abstract header (locdata) structure
38 * which keeps a point to the opaque per-category data, along with a reference
39 * count to it. To be threadsafe, we will use atomics when holding it or
40 * freeing it. (This only occurs when locale objects are created or destroyed,
41 * so there should be no performance impact on hot code paths. If your code
42 * uses locale_t creation/destruction on a hot code path, its broken. But
43 * even so, the atomic and reference counting will probably *greatly* improve
44 * your life as bootstrapping locale data from files is quite expensive.
45 */
46
47 #define NLOCDATA 4
48 struct locdata {
49 char l_lname[ENCODING_LEN+1]; /* locale name */
50 void *l_data[NLOCDATA]; /* storage area */
51 void *l_map; /* mapped file */
52 size_t l_map_len;
53 struct locdata *l_next; /* link cached list */
54 };
55
56
57 struct locale {
58 struct locdata *locdata[LC_ALL];
59 struct locale *next;
60 int on_list; /* on linked list */
61 char locname[(ENCODING_LEN+1)*NLOCDATA + 1];
62
63 /*
64 * Convenience pointers.
65 */
66 const struct lc_ctype *ctype;
67 const struct lc_collate *collate;
68 const struct lc_messages *messages;
69 const struct lc_monetary *monetary;
70 const struct lc_numeric *numeric;
71 const struct lc_time *time;
72 const _RuneLocale *runelocale;
73
74 /*
75 * The loaded value is used for localeconv. In paticular, when
76 * when we change the value of one of the above categories, we will
77 * also need to update the lconv structure. The loaded bit indicates
78 * that the lconv structure is "current" for that category. It's
79 * sort of an "inverse dirty" bit.
80 */
81 int loaded[LC_ALL];
82 struct lconv lconv;
83 };
84
85
86 struct locdata *__locdata_alloc(const char *, size_t);
87 void __locdata_free(struct locdata *);
88 struct locdata *__locdata_get_cache(int, const char *);
89 void __locdata_set_cache(int, struct locdata *);
90
91 struct locdata *__lc_numeric_load(const char *name);
92 struct locdata *__lc_monetary_load(const char *name);
93 struct locdata *__lc_messages_load(const char *name);
94 struct locdata *__lc_time_load(const char *name);
95 struct locdata *__lc_ctype_load(const char *name);
96 struct locdata *__lc_collate_load(const char *name);
97
98 extern struct locdata __posix_numeric_locdata;
99 extern struct locdata __posix_monetary_locdata;
100 extern struct locdata __posix_messages_locdata;
101 extern struct locdata __posix_time_locdata;
102 extern struct locdata __posix_ctype_locdata;
103 extern struct locdata __posix_collate_locdata;
104 extern locale_t ___global_locale;
105
106 #endif /* _LOCALEIMPL_H_ */