Mercurial > cpython-lru_cache-weakref
annotate Modules/dlmodule.c @ 3216:d00a79ebb027 legacy-trunk
Added missing imgpbm and imgsgi modules
| author | Jack Jansen <jack.jansen@cwi.nl> |
|---|---|
| date | Thu, 12 Oct 1995 10:23:27 +0000 |
| parents | 172ba04a5191 |
| children | 65d2d8e67da3 |
| rev | line source |
|---|---|
| 1650 | 1 /*********************************************************** |
|
2061
172ba04a5191
Added 1995 to copyright message.
Guido van Rossum <guido@python.org>
parents:
1650
diff
changeset
|
2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
|
172ba04a5191
Added 1995 to copyright message.
Guido van Rossum <guido@python.org>
parents:
1650
diff
changeset
|
3 The Netherlands. |
| 1650 | 4 |
| 5 All Rights Reserved | |
| 6 | |
| 7 Permission to use, copy, modify, and distribute this software and its | |
| 8 documentation for any purpose and without fee is hereby granted, | |
| 9 provided that the above copyright notice appear in all copies and that | |
| 10 both that copyright notice and this permission notice appear in | |
| 11 supporting documentation, and that the names of Stichting Mathematisch | |
| 12 Centrum or CWI not be used in advertising or publicity pertaining to | |
| 13 distribution of the software without specific, written prior permission. | |
| 14 | |
| 15 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO | |
| 16 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 17 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE | |
| 18 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
| 21 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 22 | |
| 23 ******************************************************************/ | |
| 24 | |
| 25 /* dl module */ | |
| 26 | |
| 27 #include "allobjects.h" | |
| 28 #include "modsupport.h" | |
| 29 | |
| 30 #include <dlfcn.h> | |
| 31 | |
| 32 #ifndef RTLD_LAZY | |
| 33 #define RTLD_LAZY 1 | |
| 34 #endif | |
| 35 | |
| 36 typedef struct { | |
| 37 OB_HEAD | |
| 38 ANY *dl_handle; | |
| 39 } dlobject; | |
| 40 | |
| 41 staticforward typeobject Dltype; | |
| 42 | |
| 43 static object *Dlerror; | |
| 44 | |
| 45 static object * | |
| 46 newdlobject(handle) | |
| 47 ANY *handle; | |
| 48 { | |
| 49 dlobject *xp; | |
| 50 xp = NEWOBJ(dlobject, &Dltype); | |
| 51 if (xp == NULL) | |
| 52 return NULL; | |
| 53 xp->dl_handle = handle; | |
| 54 return (object *)xp; | |
| 55 } | |
| 56 | |
| 57 static void | |
| 58 dl_dealloc(xp) | |
| 59 dlobject *xp; | |
| 60 { | |
| 61 if (xp->dl_handle != NULL) | |
| 62 dlclose(xp->dl_handle); | |
| 63 DEL(xp); | |
| 64 } | |
| 65 | |
| 66 static object * | |
| 67 dl_close(xp, args) | |
| 68 dlobject *xp; | |
| 69 object *args; | |
| 70 { | |
| 71 if (!getargs(args, "")) | |
| 72 return NULL; | |
| 73 if (xp->dl_handle != NULL) { | |
| 74 dlclose(xp->dl_handle); | |
| 75 xp->dl_handle = NULL; | |
| 76 } | |
| 77 INCREF(None); | |
| 78 return None; | |
| 79 } | |
| 80 | |
| 81 static object * | |
| 82 dl_sym(xp, args) | |
| 83 dlobject *xp; | |
| 84 object *args; | |
| 85 { | |
| 86 char *name; | |
| 87 ANY *func; | |
| 88 if (!getargs(args, "s", &name)) | |
| 89 return NULL; | |
| 90 func = dlsym(xp->dl_handle, name); | |
| 91 if (func == NULL) { | |
| 92 INCREF(None); | |
| 93 return None; | |
| 94 } | |
| 95 return newintobject((long)func); | |
| 96 } | |
| 97 | |
| 98 static object * | |
| 99 dl_call(xp, args) | |
| 100 dlobject *xp; | |
| 101 object *args; /* (varargs) */ | |
| 102 { | |
| 103 object *name; | |
| 104 long (*func)(); | |
| 105 long alist[10]; | |
| 106 long res; | |
| 107 int i; | |
| 108 int n = gettuplesize(args); | |
| 109 if (n < 1) { | |
| 110 err_setstr(TypeError, "at least a name is needed"); | |
| 111 return NULL; | |
| 112 } | |
| 113 name = gettupleitem(args, 0); | |
| 114 if (!is_stringobject(name)) { | |
| 115 err_setstr(TypeError, "function name must be a string"); | |
| 116 return NULL; | |
| 117 } | |
| 118 func = dlsym(xp->dl_handle, getstringvalue(name)); | |
| 119 if (func == NULL) { | |
| 120 err_setstr(ValueError, dlerror()); | |
| 121 return NULL; | |
| 122 } | |
| 123 if (n-1 > 10) { | |
| 124 err_setstr(TypeError, "too many arguments (max 10)"); | |
| 125 return NULL; | |
| 126 } | |
| 127 for (i = 1; i < n; i++) { | |
| 128 object *v = gettupleitem(args, i); | |
| 129 if (is_intobject(v)) | |
| 130 alist[i-1] = getintvalue(v); | |
| 131 else if (is_stringobject(v)) | |
| 132 alist[i-1] = (long)getstringvalue(v); | |
| 133 else if (v == None) | |
| 134 alist[i-1] = (long) ((char *)NULL); | |
| 135 else { | |
| 136 err_setstr(TypeError, | |
| 137 "arguments must be int, string or None"); | |
| 138 return NULL; | |
| 139 } | |
| 140 } | |
| 141 for (; i <= 10; i++) | |
| 142 alist[i-1] = 0; | |
| 143 res = (*func)(alist[0], alist[1], alist[2], alist[3], alist[4], | |
| 144 alist[5], alist[6], alist[7], alist[8], alist[9]); | |
| 145 return newintobject(res); | |
| 146 } | |
| 147 | |
| 148 static struct methodlist dlobject_methods[] = { | |
| 149 {"call", (method)dl_call, 1 /* varargs */}, | |
| 150 {"sym", (method)dl_sym}, | |
| 151 {"close", (method)dl_close}, | |
| 152 {NULL, NULL} /* Sentinel */ | |
| 153 }; | |
| 154 | |
| 155 static object * | |
| 156 dl_getattr(xp, name) | |
| 157 dlobject *xp; | |
| 158 char *name; | |
| 159 { | |
| 160 return findmethod(dlobject_methods, (object *)xp, name); | |
| 161 } | |
| 162 | |
| 163 | |
| 164 static typeobject Dltype = { | |
| 165 OB_HEAD_INIT(&Typetype) | |
| 166 0, /*ob_size*/ | |
| 167 "dl", /*tp_name*/ | |
| 168 sizeof(dlobject), /*tp_basicsize*/ | |
| 169 0, /*tp_itemsize*/ | |
| 170 /* methods */ | |
| 171 (destructor)dl_dealloc, /*tp_dealloc*/ | |
| 172 0, /*tp_print*/ | |
| 173 (getattrfunc)dl_getattr,/*tp_getattr*/ | |
| 174 0, /*tp_setattr*/ | |
| 175 0, /*tp_compare*/ | |
| 176 0, /*tp_repr*/ | |
| 177 0, /*tp_as_number*/ | |
| 178 0, /*tp_as_sequence*/ | |
| 179 0, /*tp_as_mapping*/ | |
| 180 0, /*tp_hash*/ | |
| 181 }; | |
| 182 | |
| 183 static object * | |
| 184 dl_open(self, args) | |
| 185 object *self; | |
| 186 object *args; | |
| 187 { | |
| 188 char *name; | |
| 189 int mode; | |
| 190 ANY *handle; | |
| 191 if (getargs(args, "z", &name)) | |
| 192 mode = RTLD_LAZY; | |
| 193 else { | |
| 194 err_clear(); | |
| 195 if (!getargs(args, "(zi)", &name, &mode)) | |
| 196 return NULL; | |
| 197 #ifndef RTLD_NOW | |
| 198 if (mode != RTLD_LAZY) { | |
| 199 err_setstr(ValueError, "mode must be 1"); | |
| 200 return NULL; | |
| 201 } | |
| 202 #endif | |
| 203 } | |
| 204 handle = dlopen(name, mode); | |
| 205 if (handle == NULL) { | |
| 206 err_setstr(Dlerror, dlerror()); | |
| 207 return NULL; | |
| 208 } | |
| 209 return newdlobject(handle); | |
| 210 } | |
| 211 | |
| 212 static struct methodlist dl_methods[] = { | |
| 213 {"open", dl_open}, | |
| 214 {NULL, NULL} /* sentinel */ | |
| 215 }; | |
| 216 | |
| 217 void | |
| 218 initdl() | |
| 219 { | |
| 220 object *m, *d, *x; | |
| 221 | |
| 222 if (sizeof(int) != sizeof(long) || | |
| 223 sizeof(long) != sizeof(char *)) | |
| 224 fatal( | |
| 225 "module dl requires sizeof(int) == sizeof(long) == sizeof(char*)"); | |
| 226 | |
| 227 /* Create the module and add the functions */ | |
| 228 m = initmodule("dl", dl_methods); | |
| 229 | |
| 230 /* Add some symbolic constants to the module */ | |
| 231 d = getmoduledict(m); | |
| 232 Dlerror = x = newstringobject("dl.error"); | |
| 233 dictinsert(d, "error", x); | |
| 234 x = newintobject((long)RTLD_LAZY); | |
| 235 dictinsert(d, "RTLD_LAZY", x); | |
| 236 #ifdef RTLD_NOW | |
| 237 x = newintobject((long)RTLD_NOW); | |
| 238 dictinsert(d, "RTLD_NOW", x); | |
| 239 #endif | |
| 240 | |
| 241 /* Check for errors */ | |
| 242 if (err_occurred()) | |
| 243 fatal("can't initialize module dl"); | |
| 244 } |