source: UsbWattMeter/trunk/curl-7.47.1/lib/nwlib.c@ 164

Last change on this file since 164 was 164, checked in by coas-nagasima, 6 years ago

TOPPERS/ECNLサンプルアプリ「USB充電器電力計」を追加

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
  • Property svn:mime-type set to text/x-csrc
File size: 9.3 KB
Line 
1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2012, 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 if(!(app_data = (libdata_t *) get_app_data(id))) {
188 app_data = malloc(sizeof(libdata_t));
189
190 if(app_data) {
191 memset(app_data, 0, sizeof(libdata_t));
192
193 app_data->tenbytes = malloc(10);
194 app_data->lock = NXMutexAlloc(0, 0, &liblock);
195
196 if(!app_data->tenbytes || !app_data->lock) {
197 if(app_data->lock)
198 NXMutexFree(app_data->lock);
199
200 free(app_data);
201 app_data = (libdata_t *) NULL;
202 err = ENOMEM;
203 }
204
205 if(app_data) {
206 /*
207 * Here we burn in the application data that we were trying to get
208 * by calling get_app_data(). Next time we call the first function,
209 * we'll get this data we're just now setting. We also go on here to
210 * establish the per-thread data for the calling thread, something
211 * we'll have to do on each application thread the first time
212 * it calls us.
213 */
214 err = set_app_data(gLibId, app_data);
215
216 if(err) {
217 free(app_data);
218 app_data = (libdata_t *) NULL;
219 err = ENOMEM;
220 }
221 else {
222 /* create key for thread-specific data... */
223 err = NXKeyCreate(DisposeThreadData, (void *) NULL, &key);
224
225 if(err) /* (no more keys left?) */
226 key = -1;
227
228 app_data->perthreadkey = key;
229 }
230 }
231 }
232 }
233
234 NXUnlock(gLibLock);
235 }
236
237 if(app_data) {
238 key = app_data->perthreadkey;
239
240 if(key != -1 /* couldn't create a key? no thread data */
241 && !(err = NXKeyGetValue(key, (void **) &thread_data))
242 && !thread_data) {
243 /*
244 * Allocate the per-thread data for the calling thread. Regardless of
245 * whether there was already application data or not, this may be the
246 * first call by a new thread. The fact that we allocation 20 bytes on
247 * a pointer is not very important, this just helps to demonstrate that
248 * we can have arbitrarily complex per-thread data.
249 */
250 thread_data = malloc(sizeof(libthreaddata_t));
251
252 if(thread_data) {
253 thread_data->_errno = 0;
254 thread_data->twentybytes = malloc(20);
255
256 if(!thread_data->twentybytes) {
257 free(thread_data);
258 thread_data = (libthreaddata_t *) NULL;
259 err = ENOMEM;
260 }
261
262 if((err = NXKeySetValue(key, thread_data))) {
263 free(thread_data->twentybytes);
264 free(thread_data);
265 thread_data = (libthreaddata_t *) NULL;
266 }
267 }
268 }
269 }
270
271 if(appData)
272 *appData = app_data;
273
274 if(threadData)
275 *threadData = thread_data;
276
277 return err;
278}
279
280int DisposeLibraryData( void *data )
281{
282 if(data) {
283 void *tenbytes = ((libdata_t *) data)->tenbytes;
284
285 free(tenbytes);
286 free(data);
287 }
288
289 return 0;
290}
291
292void DisposeThreadData( void *data )
293{
294 if(data) {
295 void *twentybytes = ((libthreaddata_t *) data)->twentybytes;
296
297 free(twentybytes);
298 free(data);
299 }
300}
301
302#else /* __NOVELL_LIBC__ */
303/* For native CLib-based NLM seems we can do a bit more simple. */
304#include <nwthread.h>
305
306int main ( void )
307{
308 /* initialize any globals here... */
309
310 /* do this if any global initializing was done
311 SynchronizeStart();
312 */
313 ExitThread (TSR_THREAD, 0);
314 return 0;
315}
316
317#endif /* __NOVELL_LIBC__ */
318
319#else /* NETWARE */
320
321#ifdef __POCC__
322# pragma warn(disable:2024) /* Disable warning #2024: Empty input file */
323#endif
324
325#endif /* NETWARE */
Note: See TracBrowser for help on using the repository browser.