1 mike 1.2 //%2006////////////////////////////////////////////////////////////////////////
2 //
3 // 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.
7 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
8 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
9 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
10 // EMC Corporation; VERITAS Software Corporation; The Open Group.
11 // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
12 // EMC Corporation; Symantec Corporation; The Open Group.
13 //
14 // Permission is hereby granted, free of charge, to any person obtaining a copy
15 // 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
18 // 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 //
21 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
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
24 // 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
27 // 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 //%/////////////////////////////////////////////////////////////////////////////
33
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34 mike 1.5 #include <errno.h>
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35 mike 1.2 #include "Threads.h"
36 #include "IDFactory.h"
37 #include "TSDKey.h"
38 #include "Once.h"
39
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40 a.dunfey 1.7 #if defined(PEGASUS_OS_TYPE_WINDOWS)
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41 mike 1.2 # include <sys/timeb.h>
42 #endif
43
44 PEGASUS_NAMESPACE_BEGIN
45
46 void Threads::sleep(int msec)
47 {
48 #if defined(PEGASUS_HAVE_NANOSLEEP)
49
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50 dave.sudlik 1.8 struct timespec wait, remwait;
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51 mike 1.2 wait.tv_sec = msec / 1000;
52 wait.tv_nsec = (msec % 1000) * 1000000;
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53 dave.sudlik 1.8
54 while ((nanosleep(&wait, &remwait) == -1) && (errno == EINTR))
55 {
56 wait.tv_sec = remwait.tv_sec;
57 wait.tv_nsec = remwait.tv_nsec;
58 }
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59 mike 1.2
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60 a.dunfey 1.7 #elif defined(PEGASUS_OS_TYPE_WINDOWS)
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61 mike 1.2
62 if (msec == 0)
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63 kumpf 1.6 {
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64 mike 1.2 Sleep(0);
65 return;
66 }
67
68 struct _timeb end, now;
69 _ftime( &end );
70 end.time += (msec / 1000);
71 msec -= (msec / 1000);
72 end.millitm += msec;
73
74 do
75 {
76 Sleep(0);
77 _ftime(&now);
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78 kumpf 1.6 }
79 while (end.millitm > now.millitm && end.time >= now.time);
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80 mike 1.2
81 #elif defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)
82 int seconds;
83 if (msec < 1000)
84 {
85 usleep(msec*1000);
86 }
87 else
88 {
89 // sleep for loop seconds
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90 mike 1.3 ::sleep(msec / 1000);
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91 mike 1.2 // Usleep the remaining micro seconds
92 usleep( (msec*1000) % 1000000 );
93 }
94 #endif
95 }
96
97 //==============================================================================
98 //
99 // Thread id TSD:
100 //
101 //==============================================================================
102
103 static Once _once = PEGASUS_ONCE_INITIALIZER;
104 static TSDKeyType _key;
105
106 static void _create_key()
107 {
108 TSDKey::create(&_key);
109 }
110
111 static inline void _set_id_tsd(Uint32 id)
112 mike 1.2 {
113 once(&_once, _create_key);
114 TSDKey::set_thread_specific(_key, (void*)(long)id);
115 }
116
117 static inline Uint32 _get_id_tsd()
118 {
119 once(&_once, _create_key);
120 void* ptr = TSDKey::get_thread_specific(_key);
121
122 if (!ptr)
123 {
124 // Main thread's id is 1!
125 return 1;
126 }
127
128 return (Uint32)(long)ptr;
129 }
130
131 //==============================================================================
132 //
133 mike 1.2 // _get_stack_multiplier()
134 //
135 //==============================================================================
136
137 static inline int _get_stack_multiplier()
138 {
139 #if defined(PEGASUS_OS_VMS)
140
141 static int _multiplier = 0;
142 static MutexType _multiplier_mutex = PEGASUS_MUTEX_INITIALIZER;
143
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144 kumpf 1.6 //
145 // This code uses a, 'hidden' (non-documented), VMS only, logical
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146 mike 1.2 // name (environment variable), PEGASUS_VMS_THREAD_STACK_MULTIPLIER,
147 // to allow in the field adjustment of the thread stack size.
148 //
149 // We only check for the logical name once to not have an
150 // impact on performance.
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151 kumpf 1.6 //
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152 mike 1.2 // Note: This code may have problems in a multithreaded environment
153 // with the setting of doneOnce to true.
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154 kumpf 1.6 //
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155 mike 1.2 // Current code in Cimserver and the clients do some serial thread
156 // creations first so this is not a problem now.
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157 kumpf 1.6 //
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158 mike 1.2
159 if (_multiplier == 0)
160 {
161 mutex_lock(&_multiplier_mutex);
162
163 if (_multiplier == 0)
164 {
165 const char *env = getenv("PEGASUS_VMS_THREAD_STACK_MULTIPLIER");
166
167 if (env)
168 _multiplier = atoi(env);
169
170 if (_multiplier == 0)
171 _multiplier = 2;
172 }
173
174 mutex_unlock(&_multiplier_mutex);
175 }
176
177 return _multiplier;
178 #else
179 mike 1.2 return 2;
180 #endif
181 }
182
183 //==============================================================================
184 //
185 // PEGASUS_HAVE_PTHREADS
186 //
187 //==============================================================================
188
189 #if defined(PEGASUS_HAVE_PTHREADS)
190
191 int Threads::create(
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192 kumpf 1.6 ThreadType& thread,
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193 mike 1.2 Type type,
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194 kumpf 1.6 void* (*start)(void*),
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195 mike 1.2 void* arg)
196 {
197 // Initialize thread attributes:
198
199 pthread_attr_t attr;
200 pthread_attr_init(&attr);
201
202 // Detached:
203
204 if (type == DETACHED)
205 {
206 #if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)
207 int ds = 1;
208 pthread_attr_setdetachstate(&attr, &ds);
209 #else
210 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
211 #endif
212 }
213
214 // Stack size:
215
216 mike 1.2 #if defined(PEGASUS_PLATFORM_HPUX_PARISC_ACC) || defined(PEGASUS_OS_VMS)
217 {
218 size_t stacksize;
219
220 if (pthread_attr_getstacksize(&attr, &stacksize) == 0)
221 {
222 int m = _get_stack_multiplier();
223 int rc = pthread_attr_setstacksize(&attr, stacksize * m);
224 PEGASUS_ASSERT(rc == 0);
225 }
226 }
227 #endif
228
229 // Scheduling policy:
230
231 #if defined(PEGASUS_PLATFORM_SOLARIS_SPARC_GNU) || \
232 defined(PEGASUS_PLATFORM_SOLARIS_SPARC_CC)
233 # if defined SUNOS_5_7
234 pthread_attr_setschedpolicy(&attr, SCHED_RR);
235 # else
236 pthread_attr_setschedpolicy(&attr, SCHED_OTHER);
237 mike 1.2 # endif
238 #endif // PEGASUS_PLATFORM_SOLARIS_SPARC_GNU
239
240 // Create thread:
241
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242 mike 1.4 int rc = pthread_create(&thread.thread, &attr, start, arg);
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243 mike 1.2
244 if (rc != 0)
245 {
246 thread = ThreadType();
247 return rc;
248 }
249
250 // Destroy attributes now.
251
252 pthread_attr_destroy(&attr);
253
254 // Return:
255
256 return 0;
257 }
258
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259 kumpf 1.6 ThreadType Threads::self()
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260 mike 1.2 {
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261 mike 1.4 ThreadType tt;
262 tt.thread = pthread_self();
263 return tt;
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264 mike 1.2 }
265
266 #endif /* PEGASUS_HAVE_PTHREADS */
267
268 PEGASUS_NAMESPACE_END
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Return to
Threads.cpp
CVS log
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