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