1 karl 1.12 //%2006////////////////////////////////////////////////////////////////////////
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2 mike 1.2 //
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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.;
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6 karl 1.6 // IBM Corp.; EMC Corporation, The Open Group.
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7 karl 1.8 // 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 1.9 // 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 karl 1.12 // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
12 // EMC Corporation; Symantec Corporation; The Open Group.
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13 mike 1.2 //
14 // Permission is hereby granted, free of charge, to any person obtaining a copy
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15 kumpf 1.3 // of this software and associated documentation files (the "Software"), to
16 // deal in the Software without restriction, including without limitation the
17 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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18 mike 1.2 // sell copies of the Software, and to permit persons to whom the Software is
19 // furnished to do so, subject to the following conditions:
20 //
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21 kumpf 1.3 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
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22 mike 1.2 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
23 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
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24 kumpf 1.3 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
25 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
26 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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27 mike 1.2 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 //
30 //==============================================================================
31 //
32 // Author: Mike Day (mdday@us.ibm.com) and Roger Kumpf (roger_kumpf@hp.com)
33 //
34 // Modified By:
35 //
36 //%/////////////////////////////////////////////////////////////////////////////
37
38
39 #include <sched.h>
40 #include <pthread.h>
41 #include <semaphore.h>
42 #include <signal.h>
43 #include <errno.h>
44 #include <sys/time.h>
45 #include <time.h>
46
47
48 mike 1.2 typedef sem_t PEGASUS_SEMAPHORE_TYPE;
49 typedef pthread_t PEGASUS_THREAD_TYPE;
50 typedef pthread_mutex_t PEGASUS_MUTEX_TYPE;
51
52 typedef struct {
53 sem_t sem;
54 pthread_t owner;
55 } PEGASUS_SEM_HANDLE ;
56
57 typedef struct {
58 pthread_mutex_t mut;
59 pthread_mutexattr_t mutatt;
60 pthread_t owner;
61 } PEGASUS_MUTEX_HANDLE ;
62
63 typedef PEGASUS_MUTEX_HANDLE PEGASUS_CRIT_TYPE;
64
65 typedef __pthread_cleanup_handler_t PEGASUS_CLEANUP_HANDLE ;
66 typedef void *PEGASUS_THREAD_RETURN;
67
68 #define PEGASUS_THREAD_CDECL
69 mike 1.2
70 typedef struct {
71 pthread_t thid;
72 pthread_attr_t thatt;
73 } PEGASUS_THREAD_HANDLE ;
74
75 //-----------------------------------------------------------------
76 /// Conditionals to support native or generic Conditional Semaphore
77 //-----------------------------------------------------------------
78
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79 kumpf 1.7 #define PEGASUS_CONDITIONAL_NATIVE
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80 mike 1.2
81 typedef pthread_cond_t PEGASUS_COND_TYPE;
82
83 typedef struct {
84 pthread_cond_t cond;
85 pthread_t owner;
86 } PEGASUS_COND_HANDLE;
87
88
89 //-----------------------------------------------------------------
90 /// Conditionals to support native or generic atomic variables
91 //-----------------------------------------------------------------
92
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93 kumpf 1.7 // #define PEGASUS_ATOMIC_INT_NATIVE
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94 mike 1.2
95
96 //-----------------------------------------------------------------
97 /// Conditionals to support native or generic read/write semaphores
98 //-----------------------------------------------------------------
99
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100 kumpf 1.7 #define PEGASUS_READWRITE_NATIVE
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101 mike 1.2
102 typedef struct {
103 pthread_rwlock_t rwlock;
104 pthread_t owner;
105 } PEGASUS_RWLOCK_HANDLE;
106
107
108 PEGASUS_NAMESPACE_BEGIN
109 inline void pegasus_yield(void)
110 {
111 sched_yield();
112 }
113
114
115 // pthreads cancellation calls
116 inline void disable_cancel(void)
117 {
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118 kumpf 1.11 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
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119 mike 1.2 }
120
121 inline void enable_cancel(void)
122 {
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123 kumpf 1.11 pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
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124 mike 1.2 }
125
126
127 // the next two routines are macros that MUST SHARE the same stack frame
128 // they are implemented as macros by glibc.
129 // native_cleanup_push( void (*func)(void *) ) ;
130 // these ALSO SET CANCEL STATE TO DEFER
131 #define native_cleanup_push( func, arg ) \
132 pthread_cleanup_push_defer_np((func), arg)
133
134 // native cleanup_pop(Boolean execute) ;
135 #define native_cleanup_pop(execute) \
136 pthread_cleanup_pop_restore_np(execute)
137
138 inline void pegasus_sleep(int msec)
139 {
140 struct timespec wait;
141 wait.tv_sec = msec / 1000;
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142 kumpf 1.4 wait.tv_nsec = (msec % 1000) * 1000000;
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143 mike 1.2 nanosleep(&wait, NULL);
144 }
145
146 inline void init_crit(PEGASUS_CRIT_TYPE *crit)
147 {
148 pthread_mutexattr_init(&(crit->mutatt));
149 pthread_mutexattr_setspin_np(&(crit->mutatt), PTHREAD_MUTEX_SPINONLY_NP);
150 pthread_mutex_init(&(crit->mut), &(crit->mutatt));
151 crit->owner = 0;
152 }
153
154 inline void enter_crit(PEGASUS_CRIT_TYPE *crit)
155 {
156 pthread_mutex_lock(&(crit->mut));
157 }
158
159 inline void try_crit(PEGASUS_CRIT_TYPE *crit)
160 {
161 pthread_mutex_trylock(&(crit->mut));
162 }
163
164 mike 1.2 inline void exit_crit(PEGASUS_CRIT_TYPE *crit)
165 {
166 pthread_mutex_unlock(&(crit->mut));
167 }
168
169 inline void destroy_crit(PEGASUS_CRIT_TYPE *crit)
170 {
171 while( EBUSY == pthread_mutex_destroy(&(crit->mut)))
172 {
173 pegasus_yield();
174 }
175 pthread_mutexattr_destroy(&(crit->mutatt));
176 }
177
178 static inline int pegasus_gettimeofday(struct timeval *tv) { return(gettimeofday(tv, NULL)); }
179
180 inline void exit_thread(PEGASUS_THREAD_RETURN rc)
181 {
182 pthread_exit(rc);
183 }
184
185 mike 1.2 inline PEGASUS_THREAD_TYPE pegasus_thread_self(void)
186 {
187 return(pthread_self());
188 }
189
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190 chuck 1.5 // l10n start
191 typedef pthread_key_t PEGASUS_THREAD_KEY_TYPE;
192
193 inline Uint32 pegasus_key_create(PEGASUS_THREAD_KEY_TYPE * key)
194 {
195 // Note: a destructor is not supported
196 // (because not supported on Windows (?))
197 return pthread_key_create(key, NULL);
198 }
199
200 inline Uint32 pegasus_key_delete(PEGASUS_THREAD_KEY_TYPE key)
201 {
202 return pthread_key_delete(key);
203 }
204
205 inline void * pegasus_get_thread_specific(PEGASUS_THREAD_KEY_TYPE key)
206 {
207 return pthread_getspecific(key);
208 }
209
210 inline Uint32 pegasus_set_thread_specific(PEGASUS_THREAD_KEY_TYPE key,
211 chuck 1.5 void * value)
212 {
213 return pthread_setspecific(key, value);
214 }
215 // l10n end
216
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217 mike 1.2 inline void destroy_thread(PEGASUS_THREAD_TYPE th, PEGASUS_THREAD_RETURN rc)
218 {
219 pthread_cancel(th);
220 }
221
222
223 PEGASUS_NAMESPACE_END
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