source: asp3_tinet_ecnl_arm/trunk/curl-7.57.0/lib/nwlib.c@ 352

Last change on this file since 352 was 352, checked in by coas-nagasima, 6 years ago

arm向けASP3版ECNLを追加
  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc;charset=UTF-8
File size: 9.3 KB
Line 
1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2016, 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
39typedef struct
40{
41 int _errno;
42 void *twentybytes;
43} libthreaddata_t;
44
45typedef 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
55int gLibId = -1;
56void *gLibHandle = (void *) NULL;
57rtag_t gAllocTag = (rtag_t) NULL;
58NXMutex_t *gLibLock = (NXMutex_t *) NULL;
59
60/* internal library function prototypes... */
61int DisposeLibraryData(void *);
62void DisposeThreadData(void *);
63int GetOrSetUpData(int id, libdata_t **data, libthreaddata_t **threaddata);
64
65
66int _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 */
135void _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 */
152int _NonAppCheckUnload(void)
153{
154 return 0;
155}
156
157int 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 = malloc(sizeof(libdata_t));
190
191 if(app_data) {
192 memset(app_data, 0, sizeof(libdata_t));
193
194 app_data->tenbytes = malloc(10);
195 app_data->lock = NXMutexAlloc(0, 0, &liblock);
196
197 if(!app_data->tenbytes || !app_data->lock) {
198 if(app_data->lock)
199 NXMutexFree(app_data->lock);
200
201 free(app_data);
202 app_data = (libdata_t *) NULL;
203 err = ENOMEM;
204 }
205
206 if(app_data) {
207 /*
208 * Here we burn in the application data that we were trying to get
209 * by calling get_app_data(). Next time we call the first function,
210 * we'll get this data we're just now setting. We also go on here to
211 * establish the per-thread data for the calling thread, something
212 * we'll have to do on each application thread the first time
213 * it calls us.
214 */
215 err = set_app_data(gLibId, app_data);
216
217 if(err) {
218 free(app_data);
219 app_data = (libdata_t *) NULL;
220 err = ENOMEM;
221 }
222 else {
223 /* create key for thread-specific data... */
224 err = NXKeyCreate(DisposeThreadData, (void *) NULL, &key);
225
226 if(err) /* (no more keys left?) */
227 key = -1;
228
229 app_data->perthreadkey = key;
230 }
231 }
232 }
233 }
234
235 NXUnlock(gLibLock);
236 }
237
238 if(app_data) {
239 key = app_data->perthreadkey;
240
241 if(key != -1 /* couldn't create a key? no thread data */
242 && !(err = NXKeyGetValue(key, (void **) &thread_data))
243 && !thread_data) {
244 /*
245 * Allocate the per-thread data for the calling thread. Regardless of
246 * whether there was already application data or not, this may be the
247 * first call by a new thread. The fact that we allocation 20 bytes on
248 * a pointer is not very important, this just helps to demonstrate that
249 * we can have arbitrarily complex per-thread data.
250 */
251 thread_data = malloc(sizeof(libthreaddata_t));
252
253 if(thread_data) {
254 thread_data->_errno = 0;
255 thread_data->twentybytes = malloc(20);
256
257 if(!thread_data->twentybytes) {
258 free(thread_data);
259 thread_data = (libthreaddata_t *) NULL;
260 err = ENOMEM;
261 }
262
263 err = NXKeySetValue(key, thread_data);
264 if(err) {
265 free(thread_data->twentybytes);
266 free(thread_data);
267 thread_data = (libthreaddata_t *) NULL;
268 }
269 }
270 }
271 }
272
273 if(appData)
274 *appData = app_data;
275
276 if(threadData)
277 *threadData = thread_data;
278
279 return err;
280}
281
282int DisposeLibraryData(void *data)
283{
284 if(data) {
285 void *tenbytes = ((libdata_t *) data)->tenbytes;
286
287 free(tenbytes);
288 free(data);
289 }
290
291 return 0;
292}
293
294void DisposeThreadData(void *data)
295{
296 if(data) {
297 void *twentybytes = ((libthreaddata_t *) data)->twentybytes;
298
299 free(twentybytes);
300 free(data);
301 }
302}
303
304#else /* __NOVELL_LIBC__ */
305/* For native CLib-based NLM seems we can do a bit more simple. */
306#include <nwthread.h>
307
308int main(void)
309{
310 /* initialize any globals here... */
311
312 /* do this if any global initializing was done
313 SynchronizeStart();
314 */
315 ExitThread(TSR_THREAD, 0);
316 return 0;
317}
318
319#endif /* __NOVELL_LIBC__ */
320
321#else /* NETWARE */
322
323#ifdef __POCC__
324# pragma warn(disable:2024) /* Disable warning #2024: Empty input file */
325#endif
326
327#endif /* NETWARE */
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