Mercurial > hgrepos > Python2 > PyMuPDF

comparison mupdf-source/thirdparty/curl/lib/nwlib.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22
23 #include "curl_setup.h"
24
25 #ifdef NETWARE /* Novell NetWare */
26
27 #ifdef __NOVELL_LIBC__
28 /* For native LibC-based NLM we need to register as a real lib. */
29 #include <library.h>
30 #include <netware.h>
31 #include <screen.h>
32 #include <nks/thread.h>
33 #include <nks/synch.h>
34
35 #include "curl_memory.h"
36 /* The last #include file should be: */
37 #include "memdebug.h"
38
39 typedef struct
40 {
41 int _errno;
42 void *twentybytes;
43 } libthreaddata_t;
44
45 typedef struct
46 {
47 int x;
48 int y;
49 int z;
50 void *tenbytes;
51 NXKey_t perthreadkey; /* if -1, no key obtained... */
52 NXMutex_t *lock;
53 } libdata_t;
54
55 int gLibId = -1;
56 void *gLibHandle = (void *) NULL;
57 rtag_t gAllocTag = (rtag_t) NULL;
58 NXMutex_t *gLibLock = (NXMutex_t *) NULL;
59
60 /* internal library function prototypes... */
61 int DisposeLibraryData(void *);
62 void DisposeThreadData(void *);
63 int GetOrSetUpData(int id, libdata_t **data, libthreaddata_t **threaddata);
64
65
66 int _NonAppStart(void *NLMHandle,
67 void *errorScreen,
68 const char *cmdLine,
69 const char *loadDirPath,
70 size_t uninitializedDataLength,
71 void *NLMFileHandle,
72 int (*readRoutineP)(int conn,
73 void *fileHandle, size_t offset,
74 size_t nbytes,
75 size_t *bytesRead,
76 void *buffer),
77 size_t customDataOffset,
78 size_t customDataSize,
79 int messageCount,
80 const char **messages)
81 {
82 NX_LOCK_INFO_ALLOC(liblock, "Per-Application Data Lock", 0);
83
84 #ifndef __GNUC__
85 #pragma unused(cmdLine)
86 #pragma unused(loadDirPath)
87 #pragma unused(uninitializedDataLength)
88 #pragma unused(NLMFileHandle)
89 #pragma unused(readRoutineP)
90 #pragma unused(customDataOffset)
91 #pragma unused(customDataSize)
92 #pragma unused(messageCount)
93 #pragma unused(messages)
94 #endif
95
96 /*
97 * Here we process our command line, post errors (to the error screen),
98 * perform initializations and anything else we need to do before being able
99 * to accept calls into us. If we succeed, we return non-zero and the NetWare
100 * Loader will leave us up, otherwise we fail to load and get dumped.
101 */
102 gAllocTag = AllocateResourceTag(NLMHandle,
103 "<library-name> memory allocations",
104 AllocSignature);
105
106 if(!gAllocTag) {
107 OutputToScreen(errorScreen, "Unable to allocate resource tag for "
108 "library memory allocations.\n");
109 return -1;
110 }
111
112 gLibId = register_library(DisposeLibraryData);
113
114 if(gLibId < -1) {
115 OutputToScreen(errorScreen, "Unable to register library with kernel.\n");
116 return -1;
117 }
118
119 gLibHandle = NLMHandle;
120
121 gLibLock = NXMutexAlloc(0, 0, &liblock);
122
123 if(!gLibLock) {
124 OutputToScreen(errorScreen, "Unable to allocate library data lock.\n");
125 return -1;
126 }
127
128 return 0;
129 }
130
131 /*
132 * Here we clean up any resources we allocated. Resource tags is a big part
133 * of what we created, but NetWare doesn't ask us to free those.
134 */
135 void _NonAppStop(void)
136 {
137 (void) unregister_library(gLibId);
138 NXMutexFree(gLibLock);
139 }
140
141 /*
142 * This function cannot be the first in the file for if the file is linked
143 * first, then the check-unload function's offset will be nlmname.nlm+0
144 * which is how to tell that there isn't one. When the check function is
145 * first in the linked objects, it is ambiguous. For this reason, we will
146 * put it inside this file after the stop function.
147 *
148 * Here we check to see if it's alright to ourselves to be unloaded. If not,
149 * we return a non-zero value. Right now, there isn't any reason not to allow
150 * it.
151 */
152 int _NonAppCheckUnload(void)
153 {
154 return 0;
155 }
156
157 int GetOrSetUpData(int id, libdata_t **appData,
158 libthreaddata_t **threadData)
159 {
160 int err;
161 libdata_t *app_data;
162 libthreaddata_t *thread_data;
163 NXKey_t key;
164 NX_LOCK_INFO_ALLOC(liblock, "Application Data Lock", 0);
165
166 err = 0;
167 thread_data = (libthreaddata_t *) NULL;
168
169 /*
170 * Attempt to get our data for the application calling us. This is where we
171 * store whatever application-specific information we need to carry in
172 * support of calling applications.
173 */
174 app_data = (libdata_t *) get_app_data(id);
175
176 if(!app_data) {
177 /*
178 * This application hasn't called us before; set up application AND
179 * per-thread data. Of course, just in case a thread from this same
180 * application is calling us simultaneously, we better lock our application
181 * data-creation mutex. We also need to recheck for data after we acquire
182 * the lock because WE might be that other thread that was too late to
183 * create the data and the first thread in will have created it.
184 */
185 NXLock(gLibLock);
186
187 app_data = (libdata_t *) get_app_data(id);
188 if(!app_data) {
189 app_data = calloc(1, sizeof(libdata_t));
190
191 if(app_data) {
192 app_data->tenbytes = malloc(10);
193 app_data->lock = NXMutexAlloc(0, 0, &liblock);
194
195 if(!app_data->tenbytes || !app_data->lock) {
196 if(app_data->lock)
197 NXMutexFree(app_data->lock);
198 free(app_data->tenbytes);
199 free(app_data);
200 app_data = (libdata_t *) NULL;
201 err = ENOMEM;
202 }
203
204 if(app_data) {
205 /*
206 * Here we burn in the application data that we were trying to get
207 * by calling get_app_data(). Next time we call the first function,
208 * we'll get this data we're just now setting. We also go on here to
209 * establish the per-thread data for the calling thread, something
210 * we'll have to do on each application thread the first time
211 * it calls us.
212 */
213 err = set_app_data(gLibId, app_data);
214
215 if(err) {
216 if(app_data->lock)
217 NXMutexFree(app_data->lock);
218 free(app_data->tenbytes);
219 free(app_data);
220 app_data = (libdata_t *) NULL;
221 err = ENOMEM;
222 }
223 else {
224 /* create key for thread-specific data... */
225 err = NXKeyCreate(DisposeThreadData, (void *) NULL, &key);
226
227 if(err) /* (no more keys left?) */
228 key = -1;
229
230 app_data->perthreadkey = key;
231 }
232 }
233 }
234 }
235
236 NXUnlock(gLibLock);
237 }
238
239 if(app_data) {
240 key = app_data->perthreadkey;
241
242 if(key != -1 /* couldn't create a key? no thread data */
243 && !(err = NXKeyGetValue(key, (void **) &thread_data))
244 && !thread_data) {
245 /*
246 * Allocate the per-thread data for the calling thread. Regardless of
247 * whether there was already application data or not, this may be the
248 * first call by a new thread. The fact that we allocation 20 bytes on
249 * a pointer is not very important, this just helps to demonstrate that
250 * we can have arbitrarily complex per-thread data.
251 */
252 thread_data = malloc(sizeof(libthreaddata_t));
253
254 if(thread_data) {
255 thread_data->_errno = 0;
256 thread_data->twentybytes = malloc(20);
257
258 if(!thread_data->twentybytes) {
259 free(thread_data);
260 thread_data = (libthreaddata_t *) NULL;
261 err = ENOMEM;
262 }
263
264 err = NXKeySetValue(key, thread_data);
265 if(err) {
266 free(thread_data->twentybytes);
267 free(thread_data);
268 thread_data = (libthreaddata_t *) NULL;
269 }
270 }
271 }
272 }
273
274 if(appData)
275 *appData = app_data;
276
277 if(threadData)
278 *threadData = thread_data;
279
280 return err;
281 }
282
283 int DisposeLibraryData(void *data)
284 {
285 if(data) {
286 void *tenbytes = ((libdata_t *) data)->tenbytes;
287
288 free(tenbytes);
289 free(data);
290 }
291
292 return 0;
293 }
294
295 void DisposeThreadData(void *data)
296 {
297 if(data) {
298 void *twentybytes = ((libthreaddata_t *) data)->twentybytes;
299
300 free(twentybytes);
301 free(data);
302 }
303 }
304
305 #else /* __NOVELL_LIBC__ */
306 /* For native CLib-based NLM seems we can do a bit more simple. */
307 #include <nwthread.h>
308
309 int main(void)
310 {
311 /* initialize any globals here... */
312
313 /* do this if any global initializing was done
314 SynchronizeStart();
315 */
316 ExitThread(TSR_THREAD, 0);
317 return 0;
318 }
319
320 #endif /* __NOVELL_LIBC__ */
321
322 #else /* NETWARE */
323
324 #ifdef __POCC__
325 # pragma warn(disable:2024) /* Disable warning #2024: Empty input file */
326 #endif
327
328 #endif /* NETWARE */