1 karl 1.12 //%2005////////////////////////////////////////////////////////////////////////
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2 chuck 1.1 //
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3 karl 1.11 // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
4 // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
5 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
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6 karl 1.8 // IBM Corp.; EMC Corporation, The Open Group.
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7 karl 1.11 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
8 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
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9 karl 1.12 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
10 // EMC Corporation; VERITAS Software Corporation; The Open Group.
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11 chuck 1.1 //
12 // Permission is hereby granted, free of charge, to any person obtaining a copy
13 // of this software and associated documentation files (the "Software"), to
14 // deal in the Software without restriction, including without limitation the
15 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
16 // sell copies of the Software, and to permit persons to whom the Software is
17 // furnished to do so, subject to the following conditions:
18 //
19 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
20 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
21 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
22 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
23 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
24 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 //
28 //==============================================================================
29 //
30 // Author: Chuck Carmack (carmack@us.ibm.com)
31 //
32 chuck 1.1 //%/////////////////////////////////////////////////////////////////////////////
33
34 #ifndef IPC_OS400_include
35 #define IPC_OS400_include
36
37 #define _MULTI_THREADED // must be before pthread.h
38
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39 chuck 1.2 #include <limits.h> // has SEM_VALUE_MAX
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40 chuck 1.1 #include <sched.h>
41 #include <semaphore.h>
42 #include <pthread.h>
43 #include <signal.h>
44 #include <errno.h>
45 #include <sys/time.h>
46 #include <time.h>
47 //#include <sys/timex.h>
48 #include <unistd.h>
49
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50 chuck 1.2 //#define SEM_VALUE_MAX 0xffffffff - defined in limits.h
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51 chuck 1.1
52 PEGASUS_NAMESPACE_BEGIN
53
54 //typedef sem_t PEGASUS_SEMAPHORE_TYPE;
55
56 //typedef pthread_t PEGASUS_THREAD_TYPE;
57
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58 chuck 1.3 // Redefine PEGASUS_THREAD_TYPE as a class on OS/400. On other platforms
59 // this is an int and Pegasus sets this to 0 to indicate
60 // that the thread is 'dead'. Also, we cannot use == operator
61 // on pthread_t, but need to call pthread_equal( ), so the ==
62 // operation is overloaded. Other operators are overloaded in this file.
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63 chuck 1.1 typedef class __pegasus_os400_thread_type {
64 public:
65 pthread_t thid; // An opaque struct on OS/400
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66 chuck 1.5 PEGASUS_UINT64 pegasusValue; // Needed because Pegasus sets PEGASUS_THREAD_TYPEs to 0
67 // to indicate the thread is dead, but
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68 chuck 1.3 // pthread_t structs cannot be changed on OS/400.
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69 chuck 1.1
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70 chuck 1.3 // Overloaded operators.
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71 chuck 1.1 __pegasus_os400_thread_type& operator=(const PEGASUS_UINT64 & rval);
72 operator pthread_t*();
73 operator pthread_t();
74 operator Uint32 ();
75 } PEGASUS_THREAD_TYPE;
76
77 typedef pthread_mutex_t PEGASUS_MUTEX_TYPE;
78
79 typedef struct {
80 sem_t sem;
81 PEGASUS_THREAD_TYPE owner;
82 } PEGASUS_SEM_HANDLE ;
83
84 typedef struct {
85 pthread_mutex_t mut;
86 pthread_mutexattr_t mutatt;
87 PEGASUS_THREAD_TYPE owner;
88 } PEGASUS_MUTEX_HANDLE ;
89
90 typedef PEGASUS_MUTEX_HANDLE PEGASUS_CRIT_TYPE;
91
92 chuck 1.1
93 struct _pthread_cleanup_buffer {
94 void (*__routine) (void *); /* Function to call. */
95 void *__arg; /* Its argument. */
96 int __canceltype; /* Saved cancellation type. */
97 struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions.*/
98 };
99 typedef struct _pthread_cleanup_buffer PEGASUS_CLEANUP_HANDLE;
100
101 //#define PEGASUS_THREAD_CDECL __cdecl
102 #define PEGASUS_THREAD_CDECL
103
104 typedef void *PEGASUS_THREAD_RETURN;
105
106 typedef struct {
107 PEGASUS_THREAD_TYPE thid;
108 pthread_attr_t thatt;
109 } PEGASUS_THREAD_HANDLE ;
110
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111 chuck 1.7
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112 chuck 1.1 //-----------------------------------------------------------------
113 /// Conditionals to support native or generic Conditional Semaphore
114 //-----------------------------------------------------------------
115
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116 kumpf 1.10 #define PEGASUS_CONDITIONAL_NATIVE
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117 chuck 1.1
118 typedef pthread_cond_t PEGASUS_COND_TYPE;
119
120 typedef struct {
121 pthread_cond_t cond;
122 PEGASUS_THREAD_TYPE owner;
123 } PEGASUS_COND_HANDLE;
124
125 //-----------------------------------------------------------------
126 /// Conditionals to support native or generic atomic variables
127 //-----------------------------------------------------------------
128
129
130 //-----------------------------------------------------------------
131 /// Conditionals to support native or generic read/write semaphores
132 //-----------------------------------------------------------------
133
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134 gerarda 1.4 /* Gerarda - commented out the following code */
135 /*
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136 kumpf 1.10 #define PEGASUS_READWRITE_NATIVE
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137 chuck 1.1
138 typedef struct {
139 pthread_rwlock_t rwlock;
140 PEGASUS_THREAD_TYPE owner;
141 } PEGASUS_RWLOCK_HANDLE;
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142 gerarda 1.4 */
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143 chuck 1.1
144
145 inline void pegasus_yield(void)
146 {
147 sched_yield();
148 }
149
150 // pthreads cancellation calls
151 inline void disable_cancel(void)
152 {
153 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
154 }
155
156 inline void enable_cancel(void)
157 {
158 pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
159 }
160
161
162 inline void pegasus_sleep(int msec)
163 {
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164 gerarda 1.4 /* Gerarda - redid the sleep routine */
165 int loop;
166 int microsecs = msec * 1000; /* convert from milliseconds to microseconds */
167
168 if (microsecs < 1000000)
169 usleep(microsecs);
170 else
171 {
172 loop = microsecs / 1000000;
173 for(int i = 0; i < loop; i++)
174 usleep(1000000);
175 if ((loop*1000000) < microsecs)
176 usleep(microsecs - (loop*1000000));
177 }
178
179 /* Turns out the following code does not induce sleep on OS400 */
180 /*
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181 chuck 1.1 struct timespec wait;
182 pthread_mutex_t sleep_mut = PTHREAD_MUTEX_INITIALIZER;
183 pthread_cond_t sleep_cond;
184 pthread_cond_init (&sleep_cond, NULL);
185 pthread_mutex_lock(&sleep_mut);
186 wait.tv_sec = msec / 1000;
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187 kumpf 1.6 wait.tv_nsec = (msec % 1000) * 1000000;
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188 chuck 1.1 pthread_cond_timedwait(&sleep_cond,&sleep_mut,&wait);
189 pthread_mutex_unlock(&sleep_mut);
190 pthread_cond_destroy(&sleep_cond);
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191 gerarda 1.4 */
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192 chuck 1.1 }
193
194 inline void init_crit(PEGASUS_CRIT_TYPE *crit)
195 {
196 pthread_mutex_init(&(crit->mut), NULL);
197 }
198
199 inline void enter_crit(PEGASUS_CRIT_TYPE *crit)
200 {
201 pthread_mutex_lock(&(crit->mut));
202 }
203
204 inline void try_crit(PEGASUS_CRIT_TYPE *crit)
205 {
206 pthread_mutex_trylock(&(crit->mut));
207 }
208
209 inline void exit_crit(PEGASUS_CRIT_TYPE *crit)
210 {
211 pthread_mutex_unlock(&(crit->mut));
212 }
213 chuck 1.1
214 inline void destroy_crit(PEGASUS_CRIT_TYPE *crit)
215 {
216 pthread_mutexattr_destroy(&(crit->mutatt));
217 }
218
219 inline static int pegasus_gettimeofday(struct timeval *tv)
220 {
221 return gettimeofday(tv,NULL);
222 }
223
224 inline void exit_thread(PEGASUS_THREAD_RETURN rc)
225 {
226 pthread_exit(rc);
227 }
228
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229 chuck 1.3 // Overload pegasus_thread_self to construct our
230 // PEGASUS_THREAD_TYPE with all the variables set.
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231 chuck 1.1 inline PEGASUS_THREAD_TYPE pegasus_thread_self(void)
232 {
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233 chuck 1.3 // Construct a PEGASUS_THREAD_TYPE with the
234 // pegasusValue initialized to 1 (ie. the thread
235 // is 'alive')
236 PEGASUS_THREAD_TYPE thrd = {pthread_self(),1};
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237 chuck 1.1 return thrd;
238 }
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239 chuck 1.7
240 // l10n start
241 typedef pthread_key_t PEGASUS_THREAD_KEY_TYPE;
242
243 inline Uint32 pegasus_key_create(PEGASUS_THREAD_KEY_TYPE * key)
244 {
245 // Note: a destructor is not supported
246 // (because not supported on Windows (?))
247 return pthread_key_create(key, NULL);
248 }
249
250 inline Uint32 pegasus_key_delete(PEGASUS_THREAD_KEY_TYPE key)
251 {
252 return pthread_key_delete(key);
253 }
254
255 inline void * pegasus_get_thread_specific(PEGASUS_THREAD_KEY_TYPE key)
256 {
257 return pthread_getspecific(key);
258 }
259
260 chuck 1.7 inline Uint32 pegasus_set_thread_specific(PEGASUS_THREAD_KEY_TYPE key,
261 void * value)
262 {
263 return pthread_setspecific(key, value);
264 }
265 // l10n end
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266 chuck 1.1
267 inline void destroy_thread(PEGASUS_THREAD_TYPE th, PEGASUS_THREAD_RETURN rc)
268 {
269 pthread_cancel(th.thid);
270
271 }
272
273 // Need to overload some operators because Pegasus does compares,
274 // and assignments using the thread type, but pthread_t is a structure
275 // on OS/400
276 inline int operator==(const PEGASUS_THREAD_TYPE & lval,
277 const PEGASUS_THREAD_TYPE & rval)
278 {
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279 chuck 1.9 return (pthread_equal(lval.thid, rval.thid) &&
280 (lval.pegasusValue == rval.pegasusValue));
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281 chuck 1.1 }
282
283 inline int operator==(const PEGASUS_THREAD_TYPE & lval,
284 const PEGASUS_UINT64 & rval)
285 {
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286 chuck 1.3 return ( lval.pegasusValue == rval);
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287 chuck 1.1 }
288
289
290 inline int operator!=(const PEGASUS_THREAD_TYPE & lval,
291 const PEGASUS_THREAD_TYPE & rval)
292 {
293 return !operator==(lval,rval);
294 }
295
296
297 inline int operator!=(const PEGASUS_THREAD_TYPE & lval,
298 const PEGASUS_UINT64 & rval)
299 {
300 return !operator==(lval,rval);
301 }
302
303 inline int operator!=(const PEGASUS_THREAD_TYPE & lval,
304 const int & rval)
305 {
306 return !operator==(lval,(PEGASUS_UINT64)rval);
307 }
308 chuck 1.1
309 inline int operator==(const PEGASUS_THREAD_TYPE & lval,
310 const int & rval)
311 {
312 return operator==(lval,(PEGASUS_UINT64)rval);
313 }
314
315 inline __pegasus_os400_thread_type& __pegasus_os400_thread_type::operator=(const PEGASUS_UINT64 & rval)
316 {
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317 chuck 1.3 pegasusValue = rval;
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318 chuck 1.1 return *this;
319 }
320
321 inline __pegasus_os400_thread_type::operator pthread_t *()
322 {
323 return &thid;
324 }
325
326 inline __pegasus_os400_thread_type::operator pthread_t ()
327 {
328 return thid;
329 }
330
331 inline __pegasus_os400_thread_type::operator Uint32 ()
332 {
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333 chuck 1.5 pthread_id_np_t tid;
334 pthread_getunique_np(&thid, &tid);
335 return (Uint32)(tid.intId.lo);
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336 chuck 1.1 }
337
338 PEGASUS_NAMESPACE_END
339
340 #endif // IPCOS400Include
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