|
1
|
1 /* |
|
|
2 |
|
2847
|
3 Copyright (C) 1996, 1997 John W. Eaton |
|
1
|
4 |
|
|
5 This file is part of Octave. |
|
|
6 |
|
|
7 Octave is free software; you can redistribute it and/or modify it |
|
|
8 under the terms of the GNU General Public License as published by the |
|
|
9 Free Software Foundation; either version 2, or (at your option) any |
|
|
10 later version. |
|
|
11 |
|
|
12 Octave is distributed in the hope that it will be useful, but WITHOUT |
|
|
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
|
15 for more details. |
|
|
16 |
|
|
17 You should have received a copy of the GNU General Public License |
|
|
18 along with Octave; see the file COPYING. If not, write to the Free |
|
1315
|
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
|
1
|
20 |
|
|
21 */ |
|
|
22 |
|
240
|
23 #ifdef HAVE_CONFIG_H |
|
1192
|
24 #include <config.h> |
|
1
|
25 #endif |
|
|
26 |
|
1664
|
27 #if defined (WITH_SHL) |
|
|
28 #include <cerrno> |
|
|
29 #include <cstring> |
|
|
30 #endif |
|
|
31 |
|
707
|
32 #include <strstream.h> |
|
|
33 |
|
1
|
34 extern "C" |
|
|
35 { |
|
1664
|
36 #if defined (WITH_DL) |
|
|
37 #include <dlfcn.h> |
|
1755
|
38 #ifndef RTLD_LAZY |
|
|
39 #define RTLD_LAZY 1 |
|
|
40 #endif |
|
1664
|
41 #elif defined (WITH_SHL) |
|
|
42 #include <dl.h> |
|
1102
|
43 #endif |
|
1
|
44 } |
|
|
45 |
|
2492
|
46 #include <defaults.h> |
|
1352
|
47 #include "dirfns.h" |
|
|
48 #include "dynamic-ld.h" |
|
|
49 #include "error.h" |
|
1670
|
50 #include "toplev.h" |
|
1155
|
51 #include "pathsearch.h" |
|
2862
|
52 #include "oct-obj.h" |
|
2969
|
53 #include "ov-builtin.h" |
|
2370
|
54 #include "ov.h" |
|
1352
|
55 #include "utils.h" |
|
707
|
56 #include "variables.h" |
|
1
|
57 |
|
1664
|
58 #if defined (WITH_DL) |
|
|
59 |
|
2894
|
60 class |
|
|
61 octave_dlopen_dynamic_loader : public octave_dynamic_loader |
|
1664
|
62 { |
|
2894
|
63 public: |
|
|
64 |
|
|
65 octave_dlopen_dynamic_loader (void) |
|
|
66 : octave_dynamic_loader () { } |
|
|
67 |
|
|
68 ~octave_dlopen_dynamic_loader (void) { } |
|
|
69 |
|
|
70 private: |
|
|
71 |
|
2969
|
72 octave_dynamic_loader::builtin_fcn_installer |
|
2894
|
73 resolve_reference (const string& mangled_name, const string& file); |
|
|
74 |
|
|
75 // No copying! |
|
|
76 |
|
|
77 octave_dlopen_dynamic_loader (const octave_dlopen_dynamic_loader&); |
|
|
78 |
|
|
79 octave_dlopen_dynamic_loader& |
|
|
80 operator = (const octave_dlopen_dynamic_loader&); |
|
|
81 }; |
|
|
82 |
|
2969
|
83 octave_dynamic_loader::builtin_fcn_installer |
|
2894
|
84 octave_dlopen_dynamic_loader::resolve_reference (const string& name, |
|
|
85 const string& file) |
|
|
86 { |
|
2969
|
87 octave_dynamic_loader::builtin_fcn_installer retval = 0; |
|
1665
|
88 |
|
1664
|
89 // Dynamic linking with dlopen/dlsym doesn't require specification |
|
|
90 // of the libraries at runtime. Instead, they are specified when |
|
|
91 // the .oct file is created. |
|
|
92 |
|
1755
|
93 void *handle = dlopen (file.c_str (), RTLD_LAZY); |
|
1664
|
94 |
|
2894
|
95 const char *nm = name.c_str (); |
|
|
96 |
|
1664
|
97 if (handle) |
|
|
98 { |
|
2895
|
99 void *tmp = dlsym (handle, nm); |
|
|
100 |
|
3145
|
101 retval = X_CAST (octave_dynamic_loader::builtin_fcn_installer, tmp); |
|
1664
|
102 |
|
1665
|
103 if (! retval) |
|
1664
|
104 { |
|
|
105 const char *errmsg = dlerror (); |
|
|
106 |
|
|
107 if (errmsg) |
|
2894
|
108 error("%s: `%s'", nm, errmsg); |
|
1664
|
109 else |
|
2894
|
110 error("unable to link function `%s'", nm); |
|
1664
|
111 |
|
|
112 dlclose (handle); |
|
|
113 } |
|
|
114 } |
|
|
115 else |
|
2894
|
116 error ("%s: %s `%s'", dlerror (), file.c_str (), nm); |
|
1665
|
117 |
|
|
118 return retval; |
|
1664
|
119 } |
|
|
120 |
|
|
121 #elif defined (WITH_SHL) |
|
|
122 |
|
2894
|
123 class |
|
|
124 octave_shl_load_dynamic_loader : public octave_dynamic_loader |
|
1664
|
125 { |
|
2894
|
126 public: |
|
|
127 |
|
|
128 octave_shl_load_dynamic_loader (void) |
|
|
129 : octave_dynamic_loader () { } |
|
|
130 |
|
|
131 ~octave_shl_load_dynamic_loader (void) { } |
|
|
132 |
|
|
133 private: |
|
|
134 |
|
2969
|
135 octave_dynamic_loader::builtin_fcn_installer |
|
2894
|
136 resolve_reference (const string& mangled_name, const string& file); |
|
|
137 |
|
|
138 // No copying! |
|
|
139 |
|
|
140 octave_shl_load_dynamic_loader (const octave_shl_load_dynamic_loader&); |
|
|
141 |
|
|
142 octave_shl_load_dynamic_loader& |
|
|
143 operator = (const octave_shl_load_dynamic_loader&); |
|
|
144 }; |
|
|
145 |
|
2969
|
146 octave_dynamic_loader::builtin_fcn_installer |
|
2894
|
147 octave_shl_load_dynamic_loader::resolve_reference (const string& name, |
|
|
148 const string& file) |
|
|
149 { |
|
2969
|
150 octave_dynamic_loader::builtin_fcn_installer retval = 0; |
|
1665
|
151 |
|
1664
|
152 // Dynamic linking with shl_load/shl_findsym doesn't require |
|
|
153 // specification of the libraries at runtime. Instead, they are |
|
|
154 // specified when the .oct file is created. |
|
|
155 |
|
2800
|
156 shl_t handle = shl_load (file.c_str (), BIND_DEFERRED, 0L); |
|
1664
|
157 |
|
2894
|
158 const char *nm = name.c_str (); |
|
|
159 |
|
1664
|
160 if (handle) |
|
|
161 { |
|
3033
|
162 // Don't use TYPE_PROCEDURE here. The man page says that future |
|
|
163 // versions of HP-UX may not support it. |
|
|
164 |
|
|
165 int status = shl_findsym (&handle, nm, TYPE_UNDEFINED, &retval); |
|
1664
|
166 |
|
|
167 if (status < 0) |
|
|
168 { |
|
|
169 const char *errmsg = strerror (errno); |
|
|
170 |
|
|
171 if (errmsg) |
|
2894
|
172 error("%s: `%s'", nm, errmsg); |
|
1664
|
173 else |
|
2894
|
174 error("unable to link function `%s'", nm); |
|
1664
|
175 |
|
1665
|
176 retval = 0; |
|
1664
|
177 } |
|
|
178 } |
|
|
179 else |
|
2894
|
180 error ("%s: %s `%s'", strerror (errno), file.c_str (), nm); |
|
1665
|
181 |
|
|
182 return retval; |
|
1664
|
183 } |
|
|
184 |
|
1742
|
185 #endif |
|
1664
|
186 |
|
2926
|
187 octave_dynamic_loader *octave_dynamic_loader::instance = 0; |
|
|
188 |
|
|
189 bool |
|
|
190 octave_dynamic_loader::instance_ok (void) |
|
|
191 { |
|
|
192 bool retval = true; |
|
|
193 |
|
|
194 if (! instance) |
|
|
195 make_dynamic_loader (); |
|
|
196 |
|
|
197 if (! instance) |
|
|
198 { |
|
|
199 error ("unable to create command history object!"); |
|
|
200 |
|
|
201 retval = false; |
|
|
202 } |
|
|
203 |
|
|
204 return retval; |
|
|
205 } |
|
|
206 |
|
|
207 void |
|
|
208 octave_dynamic_loader::make_dynamic_loader (void) |
|
2894
|
209 { |
|
|
210 #if defined (WITH_DL) |
|
2926
|
211 instance = new octave_dlopen_dynamic_loader (); |
|
2894
|
212 #elif defined (WITH_SHL) |
|
3130
|
213 instance = new octave_shl_load_dynamic_loader (); |
|
2894
|
214 #else |
|
2926
|
215 instance = new octave_dynamic_loader (); |
|
2894
|
216 #endif |
|
|
217 } |
|
|
218 |
|
2969
|
219 bool |
|
2894
|
220 octave_dynamic_loader::load_fcn_from_dot_oct_file (const string& fcn_name) |
|
707
|
221 { |
|
2926
|
222 if (! instance_ok ()) |
|
|
223 make_dynamic_loader (); |
|
2894
|
224 |
|
2969
|
225 bool retval = false; |
|
1664
|
226 |
|
2894
|
227 string oct_file = oct_file_in_path (fcn_name); |
|
707
|
228 |
|
1907
|
229 if (! oct_file.empty ()) |
|
707
|
230 { |
|
2894
|
231 string mangled_name = instance->mangle_name (fcn_name); |
|
707
|
232 |
|
2969
|
233 builtin_fcn_installer f |
|
|
234 = instance->resolve_reference (mangled_name, oct_file); |
|
707
|
235 |
|
3072
|
236 |
|
|
237 // XXX FIXME XXX -- this should probably be handled correctly by |
|
|
238 // mangle_octave_oct_file_name using a configure test. |
|
|
239 |
|
|
240 if (! f) |
|
|
241 { |
|
|
242 string t = "_"; |
|
|
243 |
|
|
244 mangled_name = t.append (mangled_name); |
|
|
245 |
|
|
246 f = instance->resolve_reference (mangled_name, oct_file); |
|
|
247 } |
|
|
248 |
|
707
|
249 if (f) |
|
2969
|
250 retval = f (); |
|
707
|
251 } |
|
|
252 |
|
2893
|
253 return retval; |
|
|
254 } |
|
|
255 |
|
2969
|
256 octave_dynamic_loader::builtin_fcn_installer |
|
2894
|
257 octave_dynamic_loader::resolve_reference (const string&, const string&) |
|
2893
|
258 { |
|
|
259 return 0; |
|
|
260 } |
|
707
|
261 |
|
2894
|
262 string |
|
|
263 octave_dynamic_loader::mangle_name (const string& name) |
|
|
264 { |
|
|
265 string retval ("FS"); |
|
|
266 retval.append (name); |
|
|
267 retval.append ("__Fv"); |
|
|
268 return retval; |
|
|
269 } |
|
707
|
270 |
|
1
|
271 /* |
|
|
272 ;;; Local Variables: *** |
|
|
273 ;;; mode: C++ *** |
|
|
274 ;;; End: *** |
|
|
275 */ |
