1 |
dashley |
64 |
/*$Header$ */
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2 |
dashley |
25 |
/*
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3 |
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* tclLoad.c --
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4 |
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*
|
5 |
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* This file provides the generic portion (those that are the same
|
6 |
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* on all platforms) of Tcl's dynamic loading facilities.
|
7 |
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*
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8 |
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* Copyright (c) 1995-1997 Sun Microsystems, Inc.
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9 |
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*
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10 |
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* See the file "license.terms" for information on usage and redistribution
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11 |
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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12 |
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*
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13 |
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* RCS: @(#) $Id: tclload.c,v 1.1.1.1 2001/06/13 04:42:55 dtashley Exp $
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14 |
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*/
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15 |
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16 |
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#include "tclInt.h"
|
17 |
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|
18 |
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/*
|
19 |
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* The following structure describes a package that has been loaded
|
20 |
|
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* either dynamically (with the "load" command) or statically (as
|
21 |
|
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* indicated by a call to TclGetLoadedPackages). All such packages
|
22 |
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* are linked together into a single list for the process. Packages
|
23 |
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* are never unloaded, so these structures are never freed.
|
24 |
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*/
|
25 |
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26 |
|
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typedef struct LoadedPackage {
|
27 |
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char *fileName; /* Name of the file from which the
|
28 |
|
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* package was loaded. An empty string
|
29 |
|
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* means the package is loaded statically.
|
30 |
|
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* Malloc-ed. */
|
31 |
|
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char *packageName; /* Name of package prefix for the package,
|
32 |
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* properly capitalized (first letter UC,
|
33 |
|
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* others LC), no "_", as in "Net".
|
34 |
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* Malloc-ed. */
|
35 |
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ClientData clientData; /* Token for the loaded file which should be
|
36 |
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* passed to TclpUnloadFile() when the file
|
37 |
|
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* is no longer needed. If fileName is NULL,
|
38 |
|
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* then this field is irrelevant. */
|
39 |
|
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Tcl_PackageInitProc *initProc;
|
40 |
|
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/* Initialization procedure to call to
|
41 |
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* incorporate this package into a trusted
|
42 |
|
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* interpreter. */
|
43 |
|
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Tcl_PackageInitProc *safeInitProc;
|
44 |
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/* Initialization procedure to call to
|
45 |
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* incorporate this package into a safe
|
46 |
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* interpreter (one that will execute
|
47 |
|
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* untrusted scripts). NULL means the
|
48 |
|
|
* package can't be used in unsafe
|
49 |
|
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* interpreters. */
|
50 |
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struct LoadedPackage *nextPtr;
|
51 |
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/* Next in list of all packages loaded into
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52 |
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* this application process. NULL means
|
53 |
|
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* end of list. */
|
54 |
|
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} LoadedPackage;
|
55 |
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|
56 |
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/*
|
57 |
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* TCL_THREADS
|
58 |
|
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* There is a global list of packages that is anchored at firstPackagePtr.
|
59 |
|
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* Access to this list is governed by a mutex.
|
60 |
|
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*/
|
61 |
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|
62 |
|
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static LoadedPackage *firstPackagePtr = NULL;
|
63 |
|
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/* First in list of all packages loaded into
|
64 |
|
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* this process. */
|
65 |
|
|
|
66 |
|
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TCL_DECLARE_MUTEX(packageMutex)
|
67 |
|
|
|
68 |
|
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/*
|
69 |
|
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* The following structure represents a particular package that has
|
70 |
|
|
* been incorporated into a particular interpreter (by calling its
|
71 |
|
|
* initialization procedure). There is a list of these structures for
|
72 |
|
|
* each interpreter, with an AssocData value (key "load") for the
|
73 |
|
|
* interpreter that points to the first package (if any).
|
74 |
|
|
*/
|
75 |
|
|
|
76 |
|
|
typedef struct InterpPackage {
|
77 |
|
|
LoadedPackage *pkgPtr; /* Points to detailed information about
|
78 |
|
|
* package. */
|
79 |
|
|
struct InterpPackage *nextPtr;
|
80 |
|
|
/* Next package in this interpreter, or
|
81 |
|
|
* NULL for end of list. */
|
82 |
|
|
} InterpPackage;
|
83 |
|
|
|
84 |
|
|
/*
|
85 |
|
|
* Prototypes for procedures that are private to this file:
|
86 |
|
|
*/
|
87 |
|
|
|
88 |
|
|
static void LoadCleanupProc _ANSI_ARGS_((ClientData clientData,
|
89 |
|
|
Tcl_Interp *interp));
|
90 |
|
|
|
91 |
|
|
/*
|
92 |
|
|
*----------------------------------------------------------------------
|
93 |
|
|
*
|
94 |
|
|
* Tcl_LoadObjCmd --
|
95 |
|
|
*
|
96 |
|
|
* This procedure is invoked to process the "load" Tcl command.
|
97 |
|
|
* See the user documentation for details on what it does.
|
98 |
|
|
*
|
99 |
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* Results:
|
100 |
|
|
* A standard Tcl result.
|
101 |
|
|
*
|
102 |
|
|
* Side effects:
|
103 |
|
|
* See the user documentation.
|
104 |
|
|
*
|
105 |
|
|
*----------------------------------------------------------------------
|
106 |
|
|
*/
|
107 |
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|
|
108 |
|
|
int
|
109 |
|
|
Tcl_LoadObjCmd(dummy, interp, objc, objv)
|
110 |
|
|
ClientData dummy; /* Not used. */
|
111 |
|
|
Tcl_Interp *interp; /* Current interpreter. */
|
112 |
|
|
int objc; /* Number of arguments. */
|
113 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
114 |
|
|
{
|
115 |
|
|
Tcl_Interp *target;
|
116 |
|
|
LoadedPackage *pkgPtr, *defaultPtr;
|
117 |
|
|
Tcl_DString pkgName, tmp, initName, safeInitName, fileName;
|
118 |
|
|
Tcl_PackageInitProc *initProc, *safeInitProc;
|
119 |
|
|
InterpPackage *ipFirstPtr, *ipPtr;
|
120 |
|
|
int code, namesMatch, filesMatch;
|
121 |
|
|
char *p, *tempString, *fullFileName, *packageName;
|
122 |
|
|
ClientData clientData;
|
123 |
|
|
Tcl_UniChar ch;
|
124 |
|
|
int offset;
|
125 |
|
|
|
126 |
|
|
if ((objc < 2) || (objc > 4)) {
|
127 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "fileName ?packageName? ?interp?");
|
128 |
|
|
return TCL_ERROR;
|
129 |
|
|
}
|
130 |
|
|
tempString = Tcl_GetString(objv[1]);
|
131 |
|
|
fullFileName = Tcl_TranslateFileName(interp, tempString, &fileName);
|
132 |
|
|
if (fullFileName == NULL) {
|
133 |
|
|
return TCL_ERROR;
|
134 |
|
|
}
|
135 |
|
|
Tcl_DStringInit(&pkgName);
|
136 |
|
|
Tcl_DStringInit(&initName);
|
137 |
|
|
Tcl_DStringInit(&safeInitName);
|
138 |
|
|
Tcl_DStringInit(&tmp);
|
139 |
|
|
|
140 |
|
|
packageName = NULL;
|
141 |
|
|
if (objc >= 3) {
|
142 |
|
|
packageName = Tcl_GetString(objv[2]);
|
143 |
|
|
if (packageName[0] == '\0') {
|
144 |
|
|
packageName = NULL;
|
145 |
|
|
}
|
146 |
|
|
}
|
147 |
|
|
if ((fullFileName[0] == 0) && (packageName == NULL)) {
|
148 |
|
|
Tcl_SetResult(interp,
|
149 |
|
|
"must specify either file name or package name",
|
150 |
|
|
TCL_STATIC);
|
151 |
|
|
code = TCL_ERROR;
|
152 |
|
|
goto done;
|
153 |
|
|
}
|
154 |
|
|
|
155 |
|
|
/*
|
156 |
|
|
* Figure out which interpreter we're going to load the package into.
|
157 |
|
|
*/
|
158 |
|
|
|
159 |
|
|
target = interp;
|
160 |
|
|
if (objc == 4) {
|
161 |
|
|
char *slaveIntName;
|
162 |
|
|
slaveIntName = Tcl_GetString(objv[3]);
|
163 |
|
|
target = Tcl_GetSlave(interp, slaveIntName);
|
164 |
|
|
if (target == NULL) {
|
165 |
|
|
return TCL_ERROR;
|
166 |
|
|
}
|
167 |
|
|
}
|
168 |
|
|
|
169 |
|
|
/*
|
170 |
|
|
* Scan through the packages that are currently loaded to see if the
|
171 |
|
|
* package we want is already loaded. We'll use a loaded package if
|
172 |
|
|
* it meets any of the following conditions:
|
173 |
|
|
* - Its name and file match the once we're looking for.
|
174 |
|
|
* - Its file matches, and we weren't given a name.
|
175 |
|
|
* - Its name matches, the file name was specified as empty, and there
|
176 |
|
|
* is only no statically loaded package with the same name.
|
177 |
|
|
*/
|
178 |
|
|
Tcl_MutexLock(&packageMutex);
|
179 |
|
|
|
180 |
|
|
defaultPtr = NULL;
|
181 |
|
|
for (pkgPtr = firstPackagePtr; pkgPtr != NULL; pkgPtr = pkgPtr->nextPtr) {
|
182 |
|
|
if (packageName == NULL) {
|
183 |
|
|
namesMatch = 0;
|
184 |
|
|
} else {
|
185 |
|
|
Tcl_DStringSetLength(&pkgName, 0);
|
186 |
|
|
Tcl_DStringAppend(&pkgName, packageName, -1);
|
187 |
|
|
Tcl_DStringSetLength(&tmp, 0);
|
188 |
|
|
Tcl_DStringAppend(&tmp, pkgPtr->packageName, -1);
|
189 |
|
|
Tcl_UtfToLower(Tcl_DStringValue(&pkgName));
|
190 |
|
|
Tcl_UtfToLower(Tcl_DStringValue(&tmp));
|
191 |
|
|
if (strcmp(Tcl_DStringValue(&tmp),
|
192 |
|
|
Tcl_DStringValue(&pkgName)) == 0) {
|
193 |
|
|
namesMatch = 1;
|
194 |
|
|
} else {
|
195 |
|
|
namesMatch = 0;
|
196 |
|
|
}
|
197 |
|
|
}
|
198 |
|
|
Tcl_DStringSetLength(&pkgName, 0);
|
199 |
|
|
|
200 |
|
|
filesMatch = (strcmp(pkgPtr->fileName, fullFileName) == 0);
|
201 |
|
|
if (filesMatch && (namesMatch || (packageName == NULL))) {
|
202 |
|
|
break;
|
203 |
|
|
}
|
204 |
|
|
if (namesMatch && (fullFileName[0] == 0)) {
|
205 |
|
|
defaultPtr = pkgPtr;
|
206 |
|
|
}
|
207 |
|
|
if (filesMatch && !namesMatch && (fullFileName[0] != 0)) {
|
208 |
|
|
/*
|
209 |
|
|
* Can't have two different packages loaded from the same
|
210 |
|
|
* file.
|
211 |
|
|
*/
|
212 |
|
|
|
213 |
|
|
Tcl_AppendResult(interp, "file \"", fullFileName,
|
214 |
|
|
"\" is already loaded for package \"",
|
215 |
|
|
pkgPtr->packageName, "\"", (char *) NULL);
|
216 |
|
|
code = TCL_ERROR;
|
217 |
|
|
Tcl_MutexUnlock(&packageMutex);
|
218 |
|
|
goto done;
|
219 |
|
|
}
|
220 |
|
|
}
|
221 |
|
|
Tcl_MutexUnlock(&packageMutex);
|
222 |
|
|
if (pkgPtr == NULL) {
|
223 |
|
|
pkgPtr = defaultPtr;
|
224 |
|
|
}
|
225 |
|
|
|
226 |
|
|
/*
|
227 |
|
|
* Scan through the list of packages already loaded in the target
|
228 |
|
|
* interpreter. If the package we want is already loaded there,
|
229 |
|
|
* then there's nothing for us to to.
|
230 |
|
|
*/
|
231 |
|
|
|
232 |
|
|
if (pkgPtr != NULL) {
|
233 |
|
|
ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
|
234 |
|
|
(Tcl_InterpDeleteProc **) NULL);
|
235 |
|
|
for (ipPtr = ipFirstPtr; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
|
236 |
|
|
if (ipPtr->pkgPtr == pkgPtr) {
|
237 |
|
|
code = TCL_OK;
|
238 |
|
|
goto done;
|
239 |
|
|
}
|
240 |
|
|
}
|
241 |
|
|
}
|
242 |
|
|
|
243 |
|
|
if (pkgPtr == NULL) {
|
244 |
|
|
/*
|
245 |
|
|
* The desired file isn't currently loaded, so load it. It's an
|
246 |
|
|
* error if the desired package is a static one.
|
247 |
|
|
*/
|
248 |
|
|
|
249 |
|
|
if (fullFileName[0] == 0) {
|
250 |
|
|
Tcl_AppendResult(interp, "package \"", packageName,
|
251 |
|
|
"\" isn't loaded statically", (char *) NULL);
|
252 |
|
|
code = TCL_ERROR;
|
253 |
|
|
goto done;
|
254 |
|
|
}
|
255 |
|
|
|
256 |
|
|
/*
|
257 |
|
|
* Figure out the module name if it wasn't provided explicitly.
|
258 |
|
|
*/
|
259 |
|
|
|
260 |
|
|
if (packageName != NULL) {
|
261 |
|
|
Tcl_DStringAppend(&pkgName, packageName, -1);
|
262 |
|
|
} else {
|
263 |
|
|
int retc;
|
264 |
|
|
/*
|
265 |
|
|
* Threading note - this call used to be protected by a mutex.
|
266 |
|
|
*/
|
267 |
|
|
retc = TclGuessPackageName(fullFileName, &pkgName);
|
268 |
|
|
if (!retc) {
|
269 |
|
|
int pargc;
|
270 |
|
|
char **pargv, *pkgGuess;
|
271 |
|
|
|
272 |
|
|
/*
|
273 |
|
|
* The platform-specific code couldn't figure out the
|
274 |
|
|
* module name. Make a guess by taking the last element
|
275 |
|
|
* of the file name, stripping off any leading "lib",
|
276 |
|
|
* and then using all of the alphabetic and underline
|
277 |
|
|
* characters that follow that.
|
278 |
|
|
*/
|
279 |
|
|
|
280 |
|
|
Tcl_SplitPath(fullFileName, &pargc, &pargv);
|
281 |
|
|
pkgGuess = pargv[pargc-1];
|
282 |
|
|
if ((pkgGuess[0] == 'l') && (pkgGuess[1] == 'i')
|
283 |
|
|
&& (pkgGuess[2] == 'b')) {
|
284 |
|
|
pkgGuess += 3;
|
285 |
|
|
}
|
286 |
|
|
for (p = pkgGuess; *p != 0; p += offset) {
|
287 |
|
|
offset = Tcl_UtfToUniChar(p, &ch);
|
288 |
|
|
if ((ch > 0x100)
|
289 |
|
|
|| !(isalpha(UCHAR(ch)) /* INTL: ISO only */
|
290 |
|
|
|| (UCHAR(ch) == '_'))) {
|
291 |
|
|
break;
|
292 |
|
|
}
|
293 |
|
|
}
|
294 |
|
|
if (p == pkgGuess) {
|
295 |
|
|
ckfree((char *)pargv);
|
296 |
|
|
Tcl_AppendResult(interp,
|
297 |
|
|
"couldn't figure out package name for ",
|
298 |
|
|
fullFileName, (char *) NULL);
|
299 |
|
|
code = TCL_ERROR;
|
300 |
|
|
goto done;
|
301 |
|
|
}
|
302 |
|
|
Tcl_DStringAppend(&pkgName, pkgGuess, (p - pkgGuess));
|
303 |
|
|
ckfree((char *)pargv);
|
304 |
|
|
}
|
305 |
|
|
}
|
306 |
|
|
|
307 |
|
|
/*
|
308 |
|
|
* Fix the capitalization in the package name so that the first
|
309 |
|
|
* character is in caps (or title case) but the others are all
|
310 |
|
|
* lower-case.
|
311 |
|
|
*/
|
312 |
|
|
|
313 |
|
|
Tcl_DStringSetLength(&pkgName,
|
314 |
|
|
Tcl_UtfToTitle(Tcl_DStringValue(&pkgName)));
|
315 |
|
|
|
316 |
|
|
/*
|
317 |
|
|
* Compute the names of the two initialization procedures,
|
318 |
|
|
* based on the package name.
|
319 |
|
|
*/
|
320 |
|
|
|
321 |
|
|
Tcl_DStringAppend(&initName, Tcl_DStringValue(&pkgName), -1);
|
322 |
|
|
Tcl_DStringAppend(&initName, "_Init", 5);
|
323 |
|
|
Tcl_DStringAppend(&safeInitName, Tcl_DStringValue(&pkgName), -1);
|
324 |
|
|
Tcl_DStringAppend(&safeInitName, "_SafeInit", 9);
|
325 |
|
|
|
326 |
|
|
/*
|
327 |
|
|
* Call platform-specific code to load the package and find the
|
328 |
|
|
* two initialization procedures.
|
329 |
|
|
*/
|
330 |
|
|
|
331 |
|
|
Tcl_MutexLock(&packageMutex);
|
332 |
|
|
code = TclpLoadFile(interp, fullFileName, Tcl_DStringValue(&initName),
|
333 |
|
|
Tcl_DStringValue(&safeInitName), &initProc, &safeInitProc,
|
334 |
|
|
&clientData);
|
335 |
|
|
Tcl_MutexUnlock(&packageMutex);
|
336 |
|
|
if (code != TCL_OK) {
|
337 |
|
|
goto done;
|
338 |
|
|
}
|
339 |
|
|
if (initProc == NULL) {
|
340 |
|
|
Tcl_AppendResult(interp, "couldn't find procedure ",
|
341 |
|
|
Tcl_DStringValue(&initName), (char *) NULL);
|
342 |
|
|
TclpUnloadFile(clientData);
|
343 |
|
|
code = TCL_ERROR;
|
344 |
|
|
goto done;
|
345 |
|
|
}
|
346 |
|
|
|
347 |
|
|
/*
|
348 |
|
|
* Create a new record to describe this package.
|
349 |
|
|
*/
|
350 |
|
|
|
351 |
|
|
pkgPtr = (LoadedPackage *) ckalloc(sizeof(LoadedPackage));
|
352 |
|
|
pkgPtr->fileName = (char *) ckalloc((unsigned)
|
353 |
|
|
(strlen(fullFileName) + 1));
|
354 |
|
|
strcpy(pkgPtr->fileName, fullFileName);
|
355 |
|
|
pkgPtr->packageName = (char *) ckalloc((unsigned)
|
356 |
|
|
(Tcl_DStringLength(&pkgName) + 1));
|
357 |
|
|
strcpy(pkgPtr->packageName, Tcl_DStringValue(&pkgName));
|
358 |
|
|
pkgPtr->clientData = clientData;
|
359 |
|
|
pkgPtr->initProc = initProc;
|
360 |
|
|
pkgPtr->safeInitProc = safeInitProc;
|
361 |
|
|
Tcl_MutexLock(&packageMutex);
|
362 |
|
|
pkgPtr->nextPtr = firstPackagePtr;
|
363 |
|
|
firstPackagePtr = pkgPtr;
|
364 |
|
|
Tcl_MutexUnlock(&packageMutex);
|
365 |
|
|
}
|
366 |
|
|
|
367 |
|
|
/*
|
368 |
|
|
* Invoke the package's initialization procedure (either the
|
369 |
|
|
* normal one or the safe one, depending on whether or not the
|
370 |
|
|
* interpreter is safe).
|
371 |
|
|
*/
|
372 |
|
|
|
373 |
|
|
if (Tcl_IsSafe(target)) {
|
374 |
|
|
if (pkgPtr->safeInitProc != NULL) {
|
375 |
|
|
code = (*pkgPtr->safeInitProc)(target);
|
376 |
|
|
} else {
|
377 |
|
|
Tcl_AppendResult(interp,
|
378 |
|
|
"can't use package in a safe interpreter: ",
|
379 |
|
|
"no ", pkgPtr->packageName, "_SafeInit procedure",
|
380 |
|
|
(char *) NULL);
|
381 |
|
|
code = TCL_ERROR;
|
382 |
|
|
goto done;
|
383 |
|
|
}
|
384 |
|
|
} else {
|
385 |
|
|
code = (*pkgPtr->initProc)(target);
|
386 |
|
|
}
|
387 |
|
|
|
388 |
|
|
/*
|
389 |
|
|
* Record the fact that the package has been loaded in the
|
390 |
|
|
* target interpreter.
|
391 |
|
|
*/
|
392 |
|
|
|
393 |
|
|
if (code == TCL_OK) {
|
394 |
|
|
/*
|
395 |
|
|
* Refetch ipFirstPtr: loading the package may have introduced
|
396 |
|
|
* additional static packages at the head of the linked list!
|
397 |
|
|
*/
|
398 |
|
|
|
399 |
|
|
ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
|
400 |
|
|
(Tcl_InterpDeleteProc **) NULL);
|
401 |
|
|
ipPtr = (InterpPackage *) ckalloc(sizeof(InterpPackage));
|
402 |
|
|
ipPtr->pkgPtr = pkgPtr;
|
403 |
|
|
ipPtr->nextPtr = ipFirstPtr;
|
404 |
|
|
Tcl_SetAssocData(target, "tclLoad", LoadCleanupProc,
|
405 |
|
|
(ClientData) ipPtr);
|
406 |
|
|
} else {
|
407 |
|
|
TclTransferResult(target, code, interp);
|
408 |
|
|
}
|
409 |
|
|
|
410 |
|
|
done:
|
411 |
|
|
Tcl_DStringFree(&pkgName);
|
412 |
|
|
Tcl_DStringFree(&initName);
|
413 |
|
|
Tcl_DStringFree(&safeInitName);
|
414 |
|
|
Tcl_DStringFree(&fileName);
|
415 |
|
|
Tcl_DStringFree(&tmp);
|
416 |
|
|
return code;
|
417 |
|
|
}
|
418 |
|
|
|
419 |
|
|
/*
|
420 |
|
|
*----------------------------------------------------------------------
|
421 |
|
|
*
|
422 |
|
|
* Tcl_StaticPackage --
|
423 |
|
|
*
|
424 |
|
|
* This procedure is invoked to indicate that a particular
|
425 |
|
|
* package has been linked statically with an application.
|
426 |
|
|
*
|
427 |
|
|
* Results:
|
428 |
|
|
* None.
|
429 |
|
|
*
|
430 |
|
|
* Side effects:
|
431 |
|
|
* Once this procedure completes, the package becomes loadable
|
432 |
|
|
* via the "load" command with an empty file name.
|
433 |
|
|
*
|
434 |
|
|
*----------------------------------------------------------------------
|
435 |
|
|
*/
|
436 |
|
|
|
437 |
|
|
void
|
438 |
|
|
Tcl_StaticPackage(interp, pkgName, initProc, safeInitProc)
|
439 |
|
|
Tcl_Interp *interp; /* If not NULL, it means that the
|
440 |
|
|
* package has already been loaded
|
441 |
|
|
* into the given interpreter by
|
442 |
|
|
* calling the appropriate init proc. */
|
443 |
|
|
char *pkgName; /* Name of package (must be properly
|
444 |
|
|
* capitalized: first letter upper
|
445 |
|
|
* case, others lower case). */
|
446 |
|
|
Tcl_PackageInitProc *initProc; /* Procedure to call to incorporate
|
447 |
|
|
* this package into a trusted
|
448 |
|
|
* interpreter. */
|
449 |
|
|
Tcl_PackageInitProc *safeInitProc; /* Procedure to call to incorporate
|
450 |
|
|
* this package into a safe interpreter
|
451 |
|
|
* (one that will execute untrusted
|
452 |
|
|
* scripts). NULL means the package
|
453 |
|
|
* can't be used in safe
|
454 |
|
|
* interpreters. */
|
455 |
|
|
{
|
456 |
|
|
LoadedPackage *pkgPtr;
|
457 |
|
|
InterpPackage *ipPtr, *ipFirstPtr;
|
458 |
|
|
|
459 |
|
|
/*
|
460 |
|
|
* Check to see if someone else has already reported this package as
|
461 |
|
|
* statically loaded. If this call is redundant then just return.
|
462 |
|
|
*/
|
463 |
|
|
|
464 |
|
|
Tcl_MutexLock(&packageMutex);
|
465 |
|
|
for (pkgPtr = firstPackagePtr; pkgPtr != NULL; pkgPtr = pkgPtr->nextPtr) {
|
466 |
|
|
if ((pkgPtr->initProc == initProc)
|
467 |
|
|
&& (pkgPtr->safeInitProc == safeInitProc)
|
468 |
|
|
&& (strcmp(pkgPtr->packageName, pkgName) == 0)) {
|
469 |
|
|
Tcl_MutexUnlock(&packageMutex);
|
470 |
|
|
return;
|
471 |
|
|
}
|
472 |
|
|
}
|
473 |
|
|
|
474 |
|
|
Tcl_MutexUnlock(&packageMutex);
|
475 |
|
|
|
476 |
|
|
pkgPtr = (LoadedPackage *) ckalloc(sizeof(LoadedPackage));
|
477 |
|
|
pkgPtr->fileName = (char *) ckalloc((unsigned) 1);
|
478 |
|
|
pkgPtr->fileName[0] = 0;
|
479 |
|
|
pkgPtr->packageName = (char *) ckalloc((unsigned)
|
480 |
|
|
(strlen(pkgName) + 1));
|
481 |
|
|
strcpy(pkgPtr->packageName, pkgName);
|
482 |
|
|
pkgPtr->clientData = NULL;
|
483 |
|
|
pkgPtr->initProc = initProc;
|
484 |
|
|
pkgPtr->safeInitProc = safeInitProc;
|
485 |
|
|
Tcl_MutexLock(&packageMutex);
|
486 |
|
|
pkgPtr->nextPtr = firstPackagePtr;
|
487 |
|
|
firstPackagePtr = pkgPtr;
|
488 |
|
|
Tcl_MutexUnlock(&packageMutex);
|
489 |
|
|
|
490 |
|
|
if (interp != NULL) {
|
491 |
|
|
ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(interp, "tclLoad",
|
492 |
|
|
(Tcl_InterpDeleteProc **) NULL);
|
493 |
|
|
ipPtr = (InterpPackage *) ckalloc(sizeof(InterpPackage));
|
494 |
|
|
ipPtr->pkgPtr = pkgPtr;
|
495 |
|
|
ipPtr->nextPtr = ipFirstPtr;
|
496 |
|
|
Tcl_SetAssocData(interp, "tclLoad", LoadCleanupProc,
|
497 |
|
|
(ClientData) ipPtr);
|
498 |
|
|
}
|
499 |
|
|
}
|
500 |
|
|
|
501 |
|
|
/*
|
502 |
|
|
*----------------------------------------------------------------------
|
503 |
|
|
*
|
504 |
|
|
* TclGetLoadedPackages --
|
505 |
|
|
*
|
506 |
|
|
* This procedure returns information about all of the files
|
507 |
|
|
* that are loaded (either in a particular intepreter, or
|
508 |
|
|
* for all interpreters).
|
509 |
|
|
*
|
510 |
|
|
* Results:
|
511 |
|
|
* The return value is a standard Tcl completion code. If
|
512 |
|
|
* successful, a list of lists is placed in the interp's result.
|
513 |
|
|
* Each sublist corresponds to one loaded file; its first
|
514 |
|
|
* element is the name of the file (or an empty string for
|
515 |
|
|
* something that's statically loaded) and the second element
|
516 |
|
|
* is the name of the package in that file.
|
517 |
|
|
*
|
518 |
|
|
* Side effects:
|
519 |
|
|
* None.
|
520 |
|
|
*
|
521 |
|
|
*----------------------------------------------------------------------
|
522 |
|
|
*/
|
523 |
|
|
|
524 |
|
|
int
|
525 |
|
|
TclGetLoadedPackages(interp, targetName)
|
526 |
|
|
Tcl_Interp *interp; /* Interpreter in which to return
|
527 |
|
|
* information or error message. */
|
528 |
|
|
char *targetName; /* Name of target interpreter or NULL.
|
529 |
|
|
* If NULL, return info about all interps;
|
530 |
|
|
* otherwise, just return info about this
|
531 |
|
|
* interpreter. */
|
532 |
|
|
{
|
533 |
|
|
Tcl_Interp *target;
|
534 |
|
|
LoadedPackage *pkgPtr;
|
535 |
|
|
InterpPackage *ipPtr;
|
536 |
|
|
char *prefix;
|
537 |
|
|
|
538 |
|
|
if (targetName == NULL) {
|
539 |
|
|
/*
|
540 |
|
|
* Return information about all of the available packages.
|
541 |
|
|
*/
|
542 |
|
|
|
543 |
|
|
prefix = "{";
|
544 |
|
|
Tcl_MutexLock(&packageMutex);
|
545 |
|
|
for (pkgPtr = firstPackagePtr; pkgPtr != NULL;
|
546 |
|
|
pkgPtr = pkgPtr->nextPtr) {
|
547 |
|
|
Tcl_AppendResult(interp, prefix, (char *) NULL);
|
548 |
|
|
Tcl_AppendElement(interp, pkgPtr->fileName);
|
549 |
|
|
Tcl_AppendElement(interp, pkgPtr->packageName);
|
550 |
|
|
Tcl_AppendResult(interp, "}", (char *) NULL);
|
551 |
|
|
prefix = " {";
|
552 |
|
|
}
|
553 |
|
|
Tcl_MutexUnlock(&packageMutex);
|
554 |
|
|
return TCL_OK;
|
555 |
|
|
}
|
556 |
|
|
|
557 |
|
|
/*
|
558 |
|
|
* Return information about only the packages that are loaded in
|
559 |
|
|
* a given interpreter.
|
560 |
|
|
*/
|
561 |
|
|
|
562 |
|
|
target = Tcl_GetSlave(interp, targetName);
|
563 |
|
|
if (target == NULL) {
|
564 |
|
|
return TCL_ERROR;
|
565 |
|
|
}
|
566 |
|
|
ipPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
|
567 |
|
|
(Tcl_InterpDeleteProc **) NULL);
|
568 |
|
|
prefix = "{";
|
569 |
|
|
for ( ; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
|
570 |
|
|
pkgPtr = ipPtr->pkgPtr;
|
571 |
|
|
Tcl_AppendResult(interp, prefix, (char *) NULL);
|
572 |
|
|
Tcl_AppendElement(interp, pkgPtr->fileName);
|
573 |
|
|
Tcl_AppendElement(interp, pkgPtr->packageName);
|
574 |
|
|
Tcl_AppendResult(interp, "}", (char *) NULL);
|
575 |
|
|
prefix = " {";
|
576 |
|
|
}
|
577 |
|
|
return TCL_OK;
|
578 |
|
|
}
|
579 |
|
|
|
580 |
|
|
/*
|
581 |
|
|
*----------------------------------------------------------------------
|
582 |
|
|
*
|
583 |
|
|
* LoadCleanupProc --
|
584 |
|
|
*
|
585 |
|
|
* This procedure is called to delete all of the InterpPackage
|
586 |
|
|
* structures for an interpreter when the interpreter is deleted.
|
587 |
|
|
* It gets invoked via the Tcl AssocData mechanism.
|
588 |
|
|
*
|
589 |
|
|
* Results:
|
590 |
|
|
* None.
|
591 |
|
|
*
|
592 |
|
|
* Side effects:
|
593 |
|
|
* Storage for all of the InterpPackage procedures for interp
|
594 |
|
|
* get deleted.
|
595 |
|
|
*
|
596 |
|
|
*----------------------------------------------------------------------
|
597 |
|
|
*/
|
598 |
|
|
|
599 |
|
|
static void
|
600 |
|
|
LoadCleanupProc(clientData, interp)
|
601 |
|
|
ClientData clientData; /* Pointer to first InterpPackage structure
|
602 |
|
|
* for interp. */
|
603 |
|
|
Tcl_Interp *interp; /* Interpreter that is being deleted. */
|
604 |
|
|
{
|
605 |
|
|
InterpPackage *ipPtr, *nextPtr;
|
606 |
|
|
|
607 |
|
|
ipPtr = (InterpPackage *) clientData;
|
608 |
|
|
while (ipPtr != NULL) {
|
609 |
|
|
nextPtr = ipPtr->nextPtr;
|
610 |
|
|
ckfree((char *) ipPtr);
|
611 |
|
|
ipPtr = nextPtr;
|
612 |
|
|
}
|
613 |
|
|
}
|
614 |
|
|
|
615 |
|
|
/*
|
616 |
|
|
*----------------------------------------------------------------------
|
617 |
|
|
*
|
618 |
|
|
* TclFinalizeLoad --
|
619 |
|
|
*
|
620 |
|
|
* This procedure is invoked just before the application exits.
|
621 |
|
|
* It frees all of the LoadedPackage structures.
|
622 |
|
|
*
|
623 |
|
|
* Results:
|
624 |
|
|
* None.
|
625 |
|
|
*
|
626 |
|
|
* Side effects:
|
627 |
|
|
* Memory is freed.
|
628 |
|
|
*
|
629 |
|
|
*----------------------------------------------------------------------
|
630 |
|
|
*/
|
631 |
|
|
|
632 |
|
|
void
|
633 |
|
|
TclFinalizeLoad()
|
634 |
|
|
{
|
635 |
|
|
LoadedPackage *pkgPtr;
|
636 |
|
|
|
637 |
|
|
/*
|
638 |
|
|
* No synchronization here because there should just be
|
639 |
|
|
* one thread alive at this point. Logically,
|
640 |
|
|
* packageMutex should be grabbed at this point, but
|
641 |
|
|
* the Mutexes get finalized before the call to this routine.
|
642 |
|
|
* The only subsystem left alive at this point is the
|
643 |
|
|
* memory allocator.
|
644 |
|
|
*/
|
645 |
|
|
|
646 |
|
|
while (firstPackagePtr != NULL) {
|
647 |
|
|
pkgPtr = firstPackagePtr;
|
648 |
|
|
firstPackagePtr = pkgPtr->nextPtr;
|
649 |
|
|
#if defined(TCL_UNLOAD_DLLS) || defined(__WIN32__)
|
650 |
|
|
/*
|
651 |
|
|
* Some Unix dlls are poorly behaved - registering things like
|
652 |
|
|
* atexit calls that can't be unregistered. If you unload
|
653 |
|
|
* such dlls, you get a core on exit because it wants to
|
654 |
|
|
* call a function in the dll after it's been unloaded.
|
655 |
|
|
*/
|
656 |
|
|
if (pkgPtr->fileName[0] != '\0') {
|
657 |
|
|
TclpUnloadFile(pkgPtr->clientData);
|
658 |
|
|
}
|
659 |
|
|
#endif
|
660 |
|
|
ckfree(pkgPtr->fileName);
|
661 |
|
|
ckfree(pkgPtr->packageName);
|
662 |
|
|
ckfree((char *) pkgPtr);
|
663 |
|
|
}
|
664 |
|
|
}
|
665 |
|
|
|
666 |
dashley |
64 |
/* End of tclload.c */
|