/[svn]/ircd-hybrid/branches/8.2.x/libltdl/ltdl.h
ViewVC logotype

Contents of /ircd-hybrid/branches/8.2.x/libltdl/ltdl.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 5394 - (show annotations)
Tue Jan 20 14:03:09 2015 UTC (7 years, 10 months ago) by michael
File MIME type: text/x-csrc
File size: 5709 byte(s)
- libtool 2.4.5, automake 1.15

1 /* ltdl.h -- generic dlopen functions
2
3 Copyright (C) 1998-2000, 2004-2005, 2007-2008, 2011-2015 Free
4 Software Foundation, Inc.
5 Written by Thomas Tanner, 1998
6
7 NOTE: The canonical source of this file is maintained with the
8 GNU Libtool package. Report bugs to bug-libtool@gnu.org.
9
10 GNU Libltdl is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Lesser General Public
12 License as published by the Free Software Foundation; either
13 version 2 of the License, or (at your option) any later version.
14
15 As a special exception to the GNU Lesser General Public License,
16 if you distribute this file as part of a program or library that
17 is built using GNU Libtool, you may include this file under the
18 same distribution terms that you use for the rest of that program.
19
20 GNU Libltdl is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU Lesser General Public License for more details.
24
25 You should have received a copy of the GNU Lesser General Public
26 License along with GNU Libltdl; see the file COPYING.LIB. If not, a
27 copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
28 or obtained by writing to the Free Software Foundation, Inc.,
29 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
30 */
31
32 /* Only include this header file once. */
33 #if !defined LTDL_H
34 #define LTDL_H 1
35
36 #include <libltdl/lt_system.h>
37 #include <libltdl/lt_error.h>
38 #include <libltdl/lt_dlloader.h>
39
40 LT_BEGIN_C_DECLS
41
42
43 /* LT_STRLEN can be used safely on NULL pointers. */
44 #define LT_STRLEN(s) (((s) && (s)[0]) ? strlen (s) : 0)
45
46
47 /* --- DYNAMIC MODULE LOADING API --- */
48
49
50 typedef struct lt__handle *lt_dlhandle; /* A loaded module. */
51
52 /* Initialisation and finalisation functions for libltdl. */
53 LT_SCOPE int lt_dlinit (void);
54 LT_SCOPE int lt_dlexit (void);
55
56 /* Module search path manipulation. */
57 LT_SCOPE int lt_dladdsearchdir (const char *search_dir);
58 LT_SCOPE int lt_dlinsertsearchdir (const char *before,
59 const char *search_dir);
60 LT_SCOPE int lt_dlsetsearchpath (const char *search_path);
61 LT_SCOPE const char *lt_dlgetsearchpath (void);
62 LT_SCOPE int lt_dlforeachfile (
63 const char *search_path,
64 int (*func) (const char *filename, void *data),
65 void *data);
66
67 /* User module loading advisors. */
68 LT_SCOPE int lt_dladvise_init (lt_dladvise *advise);
69 LT_SCOPE int lt_dladvise_destroy (lt_dladvise *advise);
70 LT_SCOPE int lt_dladvise_ext (lt_dladvise *advise);
71 LT_SCOPE int lt_dladvise_resident (lt_dladvise *advise);
72 LT_SCOPE int lt_dladvise_local (lt_dladvise *advise);
73 LT_SCOPE int lt_dladvise_global (lt_dladvise *advise);
74 LT_SCOPE int lt_dladvise_preload (lt_dladvise *advise);
75
76 /* Portable libltdl versions of the system dlopen() API. */
77 LT_SCOPE lt_dlhandle lt_dlopen (const char *filename);
78 LT_SCOPE lt_dlhandle lt_dlopenext (const char *filename);
79 LT_SCOPE lt_dlhandle lt_dlopenadvise (const char *filename,
80 lt_dladvise advise);
81 LT_SCOPE void * lt_dlsym (lt_dlhandle handle, const char *name);
82 LT_SCOPE const char *lt_dlerror (void);
83 LT_SCOPE int lt_dlclose (lt_dlhandle handle);
84
85
86
87 /* --- PRELOADED MODULE SUPPORT --- */
88
89
90 /* A preopened symbol. Arrays of this type comprise the exported
91 symbols for a dlpreopened module. */
92 typedef struct {
93 const char *name;
94 void *address;
95 } lt_dlsymlist;
96
97 typedef int lt_dlpreload_callback_func (lt_dlhandle handle);
98
99 LT_SCOPE int lt_dlpreload (const lt_dlsymlist *preloaded);
100 LT_SCOPE int lt_dlpreload_default (const lt_dlsymlist *preloaded);
101 LT_SCOPE int lt_dlpreload_open (const char *originator,
102 lt_dlpreload_callback_func *func);
103
104 #define lt_preloaded_symbols lt__PROGRAM__LTX_preloaded_symbols
105 /* Ensure C linkage. */
106 extern LT_DLSYM_CONST lt_dlsymlist lt__PROGRAM__LTX_preloaded_symbols[];
107
108 #define LTDL_SET_PRELOADED_SYMBOLS() \
109 lt_dlpreload_default(lt_preloaded_symbols)
110
111
112
113
114 /* --- MODULE INFORMATION --- */
115
116
117 /* Associating user data with loaded modules. */
118 typedef void * lt_dlinterface_id;
119 typedef int lt_dlhandle_interface (lt_dlhandle handle, const char *id_string);
120
121 LT_SCOPE lt_dlinterface_id lt_dlinterface_register (const char *id_string,
122 lt_dlhandle_interface *iface);
123 LT_SCOPE void lt_dlinterface_free (lt_dlinterface_id key);
124 LT_SCOPE void * lt_dlcaller_set_data (lt_dlinterface_id key,
125 lt_dlhandle handle, void *data);
126 LT_SCOPE void * lt_dlcaller_get_data (lt_dlinterface_id key,
127 lt_dlhandle handle);
128
129
130 /* Read only information pertaining to a loaded module. */
131 typedef struct {
132 char * filename; /* file name */
133 char * name; /* module name */
134 int ref_count; /* number of times lt_dlopened minus
135 number of times lt_dlclosed. */
136 unsigned int is_resident:1; /* module can't be unloaded. */
137 unsigned int is_symglobal:1; /* module symbols can satisfy
138 subsequently loaded modules. */
139 unsigned int is_symlocal:1; /* module symbols are only available
140 locally. */
141 } lt_dlinfo;
142
143 LT_SCOPE const lt_dlinfo *lt_dlgetinfo (lt_dlhandle handle);
144
145 LT_SCOPE lt_dlhandle lt_dlhandle_iterate (lt_dlinterface_id iface,
146 lt_dlhandle place);
147 LT_SCOPE lt_dlhandle lt_dlhandle_fetch (lt_dlinterface_id iface,
148 const char *module_name);
149 LT_SCOPE int lt_dlhandle_map (lt_dlinterface_id iface,
150 int (*func) (lt_dlhandle handle, void *data),
151 void *data);
152
153
154
155 /* Deprecated module residency management API. */
156 LT_SCOPE int lt_dlmakeresident (lt_dlhandle handle);
157 LT_SCOPE int lt_dlisresident (lt_dlhandle handle);
158
159 #define lt_ptr void *
160
161 LT_END_C_DECLS
162
163 #endif /*!defined LTDL_H*/

Properties

Name Value
svn:eol-style native

svnadmin@ircd-hybrid.org
ViewVC Help
Powered by ViewVC 1.1.28