source: squid-ssl/trunk/fuentes/libltdl/libltdl/lt__private.h @ 5495

Last change on this file since 5495 was 5495, checked in by Juanma, 23 months ago

Initial release

File size: 4.4 KB
Line 
1/* lt__private.h -- internal apis for libltdl
2
3   Copyright (C) 2004-2008, 2011-2015 Free Software Foundation, Inc.
4   Written by Gary V. Vaughan, 2004
5
6   NOTE: The canonical source of this file is maintained with the
7   GNU Libtool package.  Report bugs to bug-libtool@gnu.org.
8
9This library is free software; you can redistribute it and/or
10modify it under the terms of the GNU Lesser General Public
11License as published by the Free Software Foundation; either
12version 2 of the License, or (at your option) any later version.
13
14As a special exception to the GNU Lesser General Public License,
15if you distribute this file as part of a program or library that
16is built using GNU libtool, you may include this file under the
17same distribution terms that you use for the rest of that program.
18
19GNU Libltdl is distributed in the hope that it will be useful,
20but WITHOUT ANY WARRANTY; without even the implied warranty of
21MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
22GNU Lesser General Public License for more details.
23
24You should have received a copy of the GNU Lesser General Public
25License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
26copy con be downloaded from http://www.gnu.org/licenses/lgpl.html,
27or obtained by writing to the Free Software Foundation, Inc.,
2851 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
29*/
30
31#if !defined LT__PRIVATE_H
32#define LT__PRIVATE_H 1
33
34#if defined LT_CONFIG_H
35#  include LT_CONFIG_H
36#else
37#  include <config.h>
38#endif
39
40#include <stdio.h>
41#include <ctype.h>
42#include <assert.h>
43#include <errno.h>
44#include <string.h>
45
46#if defined HAVE_UNISTD_H
47#  include <unistd.h>
48#endif
49
50/* Import internal interfaces...  */
51#include "lt__alloc.h"
52#include "lt__dirent.h"
53#include "lt__strl.h"
54#include "lt__glibc.h"
55
56/* ...and all exported interfaces.  */
57#include "ltdl.h"
58
59#if defined WITH_DMALLOC
60#  include <dmalloc.h>
61#endif
62
63/* DLL building support on win32 hosts;  mostly to workaround their
64   ridiculous implementation of data symbol exporting. */
65#ifndef LT_GLOBAL_DATA
66# if defined __WINDOWS__ || defined __CYGWIN__
67#  if defined DLL_EXPORT        /* defined by libtool (if required) */
68#   define LT_GLOBAL_DATA       __declspec(dllexport)
69#  endif
70# endif
71# ifndef LT_GLOBAL_DATA
72#  define LT_GLOBAL_DATA        /* static linking or !__WINDOWS__ */
73# endif
74#endif
75
76#ifndef __attribute__
77# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
78#  define __attribute__(x)
79# endif
80#endif
81
82#ifndef LT__UNUSED
83# define LT__UNUSED __attribute__ ((__unused__))
84#endif
85
86
87LT_BEGIN_C_DECLS
88
89#if !defined errno
90extern int errno;
91#endif
92
93LT_SCOPE void   lt__alloc_die_callback (void);
94
95
96/* For readability:  */
97#define STRNEQ(s1, s2)  (strcmp((s1), (s2)) != 0)
98#define STREQ(s1, s2)   (strcmp((s1), (s2)) == 0)
99
100
101
102/* --- OPAQUE STRUCTURES DECLARED IN LTDL.H --- */
103
104/* This type is used for the array of interface data sets in each handler. */
105typedef struct {
106  lt_dlinterface_id     key;
107  void *                data;
108} lt_interface_data;
109
110struct lt__handle {
111  lt_dlhandle           next;
112  const lt_dlvtable *   vtable;         /* dlopening interface */
113  lt_dlinfo             info;           /* user visible fields */
114  int                   depcount;       /* number of dependencies */
115  lt_dlhandle *         deplibs;        /* dependencies */
116  lt_module             module;         /* system module handle */
117  void *                system;         /* system specific data */
118  lt_interface_data *   interface_data; /* per caller associated data */
119  int                   flags;          /* various boolean stats */
120};
121
122struct lt__advise {
123  unsigned int  try_ext:1;      /* try system library extensions.  */
124  unsigned int  is_resident:1;  /* module can't be unloaded. */
125  unsigned int  is_symglobal:1; /* module symbols can satisfy
126                                   subsequently loaded modules.  */
127  unsigned int  is_symlocal:1;  /* module symbols are only available
128                                   locally. */
129  unsigned int  try_preload_only:1;/* only preloaded modules will be tried. */
130};
131
132/* --- ERROR HANDLING --- */
133
134/* Extract the diagnostic strings from the error table macro in the same
135   order as the enumerated indices in lt_error.h. */
136
137#define LT__STRERROR(name)      lt__error_string(LT_CONC(LT_ERROR_,name))
138
139#define LT__GETERROR(lvalue)          (lvalue) = lt__get_last_error()
140#define LT__SETERRORSTR(errormsg)     lt__set_last_error(errormsg)
141#define LT__SETERROR(errorcode)       LT__SETERRORSTR(LT__STRERROR(errorcode))
142
143LT_SCOPE const char *lt__error_string   (int errorcode);
144LT_SCOPE const char *lt__get_last_error (void);
145LT_SCOPE const char *lt__set_last_error (const char *errormsg);
146
147LT_END_C_DECLS
148
149#endif /*!defined LT__PRIVATE_H*/
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