|
3326
|
1 /* |
|
|
2 |
|
|
3 Copyright (C) 1999 John W. Eaton |
|
|
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 |
|
|
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
|
|
20 |
|
|
21 */ |
|
|
22 |
|
|
23 #ifdef HAVE_CONFIG_H |
|
|
24 #include <config.h> |
|
|
25 #endif |
|
|
26 |
|
|
27 #if defined (WITH_SHL) |
|
|
28 #include <cerrno> |
|
|
29 #include <cstring> |
|
|
30 #endif |
|
|
31 |
|
3503
|
32 #include <strstream> |
|
3326
|
33 |
|
|
34 extern "C" |
|
|
35 { |
|
|
36 #if defined (WITH_DL) |
|
|
37 #if defined (HAVE_DLFCN_H) |
|
|
38 #include <dlfcn.h> |
|
|
39 #else |
|
|
40 extern void *dlopen (const char *, int); |
|
|
41 extern const char *dlerror (void); |
|
|
42 extern void *dlsym (void *, const char *); |
|
|
43 extern int dlclose (void *); |
|
|
44 #endif |
|
|
45 #ifndef RTLD_LAZY |
|
|
46 #define RTLD_LAZY 1 |
|
|
47 #endif |
|
|
48 #elif defined (WITH_SHL) |
|
|
49 #include <dl.h> |
|
|
50 #endif |
|
|
51 } |
|
|
52 |
|
|
53 #include "file-stat.h" |
|
|
54 #include "lo-error.h" |
|
|
55 #include "oct-shlib.h" |
|
|
56 #include "str-vec.h" |
|
|
57 |
|
|
58 class |
|
|
59 octave_base_shlib : public octave_shlib |
|
|
60 { |
|
|
61 public: |
|
|
62 |
|
|
63 octave_base_shlib (void) |
|
|
64 : octave_shlib (octave_xshlib ()), file (), fcn_names (), |
|
|
65 tm_loaded (static_cast<time_t> (0)) |
|
|
66 { count = 1; } |
|
|
67 |
|
3504
|
68 octave_base_shlib (const std::string& f) |
|
3326
|
69 : octave_shlib (octave_xshlib ()), file (f), fcn_names (), |
|
|
70 tm_loaded (static_cast<time_t> (0)) |
|
|
71 { count = 1; } |
|
|
72 |
|
|
73 ~octave_base_shlib (void) { } |
|
|
74 |
|
3504
|
75 void open (const std::string&, bool = false) { } |
|
3326
|
76 |
|
3504
|
77 void *search (const std::string&, name_mangler = 0) { return 0; } |
|
3326
|
78 |
|
|
79 void close (octave_shlib::close_hook = 0) { } |
|
|
80 |
|
3504
|
81 bool remove (const std::string& fcn_name); |
|
3326
|
82 |
|
|
83 bool is_open (void) const { return false; } |
|
|
84 |
|
|
85 bool is_out_of_date (void) const; |
|
|
86 |
|
|
87 int number_of_functions_loaded (void) const { return fcn_names.length (); } |
|
|
88 |
|
3504
|
89 std::string file_name (void) const { return file; } |
|
3326
|
90 |
|
|
91 octave_time time_loaded (void) const { return tm_loaded; } |
|
|
92 |
|
|
93 protected: |
|
|
94 |
|
3504
|
95 std::string file; |
|
3326
|
96 |
|
|
97 string_vector fcn_names; |
|
|
98 |
|
|
99 octave_time tm_loaded; |
|
|
100 |
|
|
101 void stamp_time (bool warn_future = false); |
|
|
102 |
|
3504
|
103 void add_to_fcn_names (const std::string& name); |
|
3326
|
104 |
|
|
105 void do_close_hook (octave_shlib::close_hook = 0); |
|
|
106 |
|
|
107 void tabula_rasa (void); |
|
|
108 |
|
|
109 // No copying! |
|
|
110 |
|
|
111 octave_base_shlib (const octave_base_shlib&); |
|
|
112 |
|
|
113 octave_base_shlib& operator = (const octave_base_shlib&); |
|
|
114 }; |
|
|
115 |
|
|
116 bool |
|
3504
|
117 octave_base_shlib::remove (const std::string& fcn_name) |
|
3326
|
118 { |
|
|
119 bool retval = false; |
|
|
120 |
|
|
121 int n = number_of_functions_loaded (); |
|
|
122 |
|
|
123 string_vector new_fcn_names (n); |
|
|
124 |
|
|
125 int k = 0; |
|
|
126 |
|
|
127 for (int i = 0; i < n; i++) |
|
|
128 { |
|
|
129 if (fcn_names(i) == fcn_name) |
|
|
130 retval = true; |
|
|
131 else |
|
|
132 new_fcn_names(k++) = fcn_names(i); |
|
|
133 } |
|
|
134 |
|
|
135 new_fcn_names.resize (k); |
|
|
136 |
|
|
137 fcn_names = new_fcn_names; |
|
|
138 |
|
|
139 return retval; |
|
|
140 } |
|
|
141 |
|
|
142 bool |
|
|
143 octave_base_shlib::is_out_of_date (void) const |
|
|
144 { |
|
|
145 file_stat fs (file); |
|
|
146 |
|
|
147 return fs.is_newer (tm_loaded); |
|
|
148 } |
|
|
149 |
|
|
150 void |
|
|
151 octave_base_shlib::stamp_time (bool warn_future) |
|
|
152 { |
|
|
153 tm_loaded.stamp (); |
|
|
154 |
|
|
155 if (warn_future) |
|
|
156 { |
|
|
157 file_stat fs (file); |
|
|
158 |
|
|
159 if (fs.is_newer (tm_loaded)) |
|
|
160 (*current_liboctave_warning_handler) |
|
|
161 ("timestamp on file %s is in the future", file.c_str ()); |
|
|
162 } |
|
|
163 } |
|
|
164 |
|
|
165 void |
|
3504
|
166 octave_base_shlib::add_to_fcn_names (const std::string& name) |
|
3326
|
167 { |
|
|
168 int n = number_of_functions_loaded (); |
|
|
169 |
|
|
170 for (int i = 0; i < n; i++) |
|
|
171 if (fcn_names(i) == name) |
|
|
172 return; |
|
|
173 |
|
|
174 fcn_names.resize (n+1); |
|
|
175 |
|
|
176 fcn_names(n) = name; |
|
|
177 } |
|
|
178 |
|
|
179 void |
|
|
180 octave_base_shlib::do_close_hook (octave_shlib::close_hook cl_hook) |
|
|
181 { |
|
|
182 int n = number_of_functions_loaded (); |
|
|
183 |
|
|
184 for (int i = 0; i < n; i++) |
|
|
185 cl_hook (fcn_names(i)); |
|
|
186 } |
|
|
187 |
|
|
188 void |
|
|
189 octave_base_shlib::tabula_rasa (void) |
|
|
190 { |
|
|
191 file = ""; |
|
|
192 |
|
|
193 fcn_names.resize (0); |
|
|
194 |
|
|
195 tm_loaded = static_cast<time_t> (0); |
|
|
196 } |
|
|
197 |
|
|
198 #if defined (WITH_DL) |
|
|
199 |
|
|
200 class |
|
|
201 octave_dlopen_shlib : public octave_base_shlib |
|
|
202 { |
|
|
203 public: |
|
|
204 |
|
|
205 octave_dlopen_shlib (void); |
|
|
206 |
|
|
207 ~octave_dlopen_shlib (void); |
|
|
208 |
|
3504
|
209 void open (const std::string& f, bool warn_future = false); |
|
3326
|
210 |
|
3504
|
211 void *search (const std::string& name, name_mangler mangler = 0); |
|
3326
|
212 |
|
|
213 void close (octave_shlib::close_hook cl_hook = 0); |
|
|
214 |
|
|
215 bool is_open (void) const { return (library != 0); } |
|
|
216 |
|
|
217 private: |
|
|
218 |
|
|
219 // No copying! |
|
|
220 |
|
|
221 octave_dlopen_shlib (const octave_dlopen_shlib&); |
|
|
222 |
|
|
223 octave_dlopen_shlib& operator = (const octave_dlopen_shlib&); |
|
|
224 |
|
|
225 void *library; |
|
|
226 }; |
|
|
227 |
|
|
228 octave_dlopen_shlib::octave_dlopen_shlib (void) |
|
|
229 : octave_base_shlib (), library (0) |
|
|
230 { |
|
|
231 } |
|
|
232 |
|
|
233 octave_dlopen_shlib::~octave_dlopen_shlib (void) |
|
|
234 { |
|
|
235 close (); |
|
|
236 } |
|
|
237 |
|
|
238 void |
|
3504
|
239 octave_dlopen_shlib::open (const std::string& f, bool warn_future) |
|
3326
|
240 { |
|
|
241 if (! is_open ()) |
|
|
242 { |
|
|
243 file = f; |
|
|
244 |
|
|
245 library = dlopen (file.c_str (), RTLD_LAZY); |
|
|
246 |
|
|
247 if (library) |
|
|
248 stamp_time (warn_future); |
|
|
249 else |
|
|
250 { |
|
|
251 const char *msg = dlerror (); |
|
|
252 |
|
|
253 if (msg) |
|
|
254 (*current_liboctave_error_handler) ("%s", msg); |
|
|
255 } |
|
|
256 } |
|
|
257 else |
|
|
258 (*current_liboctave_error_handler) |
|
|
259 ("shared library %s is already open", file.c_str ()); |
|
|
260 } |
|
|
261 |
|
|
262 void * |
|
3504
|
263 octave_dlopen_shlib::search (const std::string& name, |
|
3326
|
264 octave_shlib::name_mangler mangler) |
|
|
265 { |
|
|
266 void *function = 0; |
|
|
267 |
|
|
268 if (is_open ()) |
|
|
269 { |
|
3504
|
270 std::string sym_name = name; |
|
3326
|
271 |
|
|
272 if (mangler) |
|
|
273 sym_name = mangler (name); |
|
|
274 |
|
|
275 function = dlsym (library, sym_name.c_str ()); |
|
|
276 |
|
|
277 if (function) |
|
|
278 add_to_fcn_names (name); |
|
|
279 } |
|
|
280 else |
|
|
281 (*current_liboctave_error_handler) |
|
|
282 ("shared library %s is not open", file.c_str ()); |
|
|
283 |
|
|
284 return function; |
|
|
285 } |
|
|
286 |
|
|
287 void |
|
|
288 octave_dlopen_shlib::close (octave_shlib::close_hook cl_hook) |
|
|
289 { |
|
|
290 if (is_open ()) |
|
|
291 { |
|
|
292 do_close_hook (cl_hook); |
|
|
293 |
|
|
294 dlclose (library); |
|
|
295 |
|
|
296 library = 0; |
|
|
297 |
|
|
298 tabula_rasa (); |
|
|
299 } |
|
|
300 } |
|
|
301 |
|
|
302 #elif defined (WITH_SHL) |
|
|
303 |
|
|
304 class |
|
|
305 octave_shl_load_shlib : public octave_base_shlib |
|
|
306 { |
|
|
307 public: |
|
|
308 |
|
|
309 octave_shl_load_shlib (void); |
|
|
310 |
|
|
311 ~octave_shl_load_shlib (void); |
|
|
312 |
|
3504
|
313 void open (const std::string& f, bool warn_future = false); |
|
3326
|
314 |
|
3504
|
315 void *search (const std::string& name, name_mangler mangler = 0); |
|
3326
|
316 |
|
|
317 void close (octave_shlib::close_hook cl_hook = 0); |
|
|
318 |
|
3609
|
319 bool is_open (void) const { return (library != 0); } |
|
3326
|
320 |
|
|
321 private: |
|
|
322 |
|
|
323 // No copying! |
|
|
324 |
|
|
325 octave_shl_load_shlib (const octave_shl_load_shlib&); |
|
|
326 |
|
|
327 octave_shl_load_shlib& operator = (const octave_shl_load_shlib&); |
|
|
328 |
|
|
329 shl_t library; |
|
|
330 }; |
|
|
331 |
|
|
332 octave_shl_load_shlib::octave_shl_load_shlib (void) |
|
|
333 : octave_base_shlib (), library (0) |
|
|
334 { |
|
|
335 } |
|
|
336 |
|
|
337 octave_shl_load_shlib::~octave_shl_load_shlib (void) |
|
|
338 { |
|
|
339 close (); |
|
|
340 } |
|
|
341 |
|
|
342 void |
|
3504
|
343 octave_shl_load_shlib::open (const std::string& f, bool warn_future) |
|
3326
|
344 { |
|
|
345 if (! is_open ()) |
|
|
346 { |
|
|
347 file = f; |
|
|
348 |
|
|
349 library = shl_load (file.c_str (), BIND_DEFERRED, 0L); |
|
|
350 |
|
|
351 if (library) |
|
|
352 stamp_time (warn_future); |
|
|
353 else |
|
3504
|
354 { |
|
|
355 using namespace std; |
|
|
356 (*current_liboctave_error_handler) ("%s", strerror (errno)); |
|
|
357 } |
|
3326
|
358 } |
|
|
359 else |
|
|
360 (*current_liboctave_error_handler) |
|
|
361 ("shared library %s is already open", file.c_str ()); |
|
|
362 } |
|
|
363 |
|
|
364 void * |
|
3504
|
365 octave_shl_load_shlib::search (const std::string& name, |
|
3326
|
366 octave_shlib::name_mangler mangler) |
|
|
367 { |
|
|
368 void *function = 0; |
|
|
369 |
|
|
370 if (is_open ()) |
|
|
371 { |
|
3609
|
372 std::string sym_name = name; |
|
3326
|
373 |
|
|
374 if (mangler) |
|
|
375 sym_name = mangler (name); |
|
|
376 |
|
|
377 int status = shl_findsym (&library, sym_name.c_str (), |
|
|
378 TYPE_UNDEFINED, &function); |
|
|
379 |
|
|
380 if (status == 0) |
|
|
381 add_to_fcn_names (name); |
|
|
382 } |
|
|
383 else |
|
|
384 (*current_liboctave_error_handler) |
|
|
385 ("shared library %s is not open", file.c_str ()); |
|
|
386 |
|
|
387 return function; |
|
|
388 } |
|
|
389 |
|
|
390 void |
|
|
391 octave_shl_load_shlib::close (octave_shlib::close_hook cl_hook) |
|
|
392 { |
|
|
393 if (is_open ()) |
|
|
394 { |
|
|
395 do_close_hook (cl_hook); |
|
|
396 |
|
|
397 shl_unload (library); |
|
|
398 |
|
|
399 library = 0; |
|
|
400 |
|
|
401 tabula_rasa (); |
|
|
402 } |
|
|
403 } |
|
|
404 |
|
|
405 #endif |
|
|
406 |
|
|
407 octave_shlib * |
|
|
408 octave_shlib::make_shlib (void) |
|
|
409 { |
|
|
410 #if defined (WITH_DL) |
|
|
411 return new octave_dlopen_shlib (); |
|
|
412 #elif defined (WITH_SHL) |
|
|
413 return new octave_shl_load_shlib (); |
|
|
414 #else |
|
|
415 return new octave_base_shlib (); |
|
|
416 #endif |
|
|
417 } |
|
|
418 |
|
|
419 /* |
|
|
420 ;;; Local Variables: *** |
|
|
421 ;;; mode: C++ *** |
|
|
422 ;;; End: *** |
|
|
423 */ |
