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 // _get_stack_multiplier()
100 //
101 //==============================================================================
102
103 static inline int _get_stack_multiplier()
104 {
105 #if defined(PEGASUS_OS_VMS)
106
107 static int _multiplier = 0;
108 static MutexType _multiplier_mutex = PEGASUS_MUTEX_INITIALIZER;
109
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110 kumpf 1.6 //
111 // This code uses a, 'hidden' (non-documented), VMS only, logical
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112 mike 1.2 // name (environment variable), PEGASUS_VMS_THREAD_STACK_MULTIPLIER,
113 // to allow in the field adjustment of the thread stack size.
114 //
115 // We only check for the logical name once to not have an
116 // impact on performance.
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117 kumpf 1.6 //
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118 mike 1.2 // Note: This code may have problems in a multithreaded environment
119 // with the setting of doneOnce to true.
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120 kumpf 1.6 //
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121 mike 1.2 // Current code in Cimserver and the clients do some serial thread
122 // creations first so this is not a problem now.
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123 kumpf 1.6 //
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124 mike 1.2
125 if (_multiplier == 0)
126 {
127 mutex_lock(&_multiplier_mutex);
128
129 if (_multiplier == 0)
130 {
131 const char *env = getenv("PEGASUS_VMS_THREAD_STACK_MULTIPLIER");
132
133 if (env)
134 _multiplier = atoi(env);
135
136 if (_multiplier == 0)
137 _multiplier = 2;
138 }
139
140 mutex_unlock(&_multiplier_mutex);
141 }
142
143 return _multiplier;
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144 kumpf 1.10.8.1 #elif defined(PEGASUS_PLATFORM_HPUX_PARISC_ACC)
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145 mike 1.2 return 2;
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146 kumpf 1.10.8.1 #else
147 return 1;
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148 mike 1.2 #endif
149 }
150
151 //==============================================================================
152 //
153 // PEGASUS_HAVE_PTHREADS
154 //
155 //==============================================================================
156
157 #if defined(PEGASUS_HAVE_PTHREADS)
158
159 int Threads::create(
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160 kumpf 1.6 ThreadType& thread,
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161 mike 1.2 Type type,
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162 kumpf 1.6 void* (*start)(void*),
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163 mike 1.2 void* arg)
164 {
165 // Initialize thread attributes:
166
167 pthread_attr_t attr;
168 pthread_attr_init(&attr);
169
170 // Detached:
171
172 if (type == DETACHED)
173 {
174 #if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)
175 int ds = 1;
176 pthread_attr_setdetachstate(&attr, &ds);
177 #else
178 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
179 #endif
180 }
181
182 // Stack size:
183
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184 kumpf 1.10.8.1 int multiplier = _get_stack_multiplier();
185
186 if (multiplier != 1)
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187 mike 1.2 {
188 size_t stacksize;
189
190 if (pthread_attr_getstacksize(&attr, &stacksize) == 0)
191 {
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192 kumpf 1.10.8.1 int rc = pthread_attr_setstacksize(&attr, stacksize * multiplier);
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193 mike 1.2 PEGASUS_ASSERT(rc == 0);
194 }
195 }
196
197 // Scheduling policy:
198
199 #if defined(PEGASUS_PLATFORM_SOLARIS_SPARC_GNU) || \
200 defined(PEGASUS_PLATFORM_SOLARIS_SPARC_CC)
201 # if defined SUNOS_5_7
202 pthread_attr_setschedpolicy(&attr, SCHED_RR);
203 # else
204 pthread_attr_setschedpolicy(&attr, SCHED_OTHER);
205 # endif
206 #endif // PEGASUS_PLATFORM_SOLARIS_SPARC_GNU
207
208 // Create thread:
209
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210 mike 1.4 int rc = pthread_create(&thread.thread, &attr, start, arg);
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211 mike 1.2
212 if (rc != 0)
213 {
214 thread = ThreadType();
215 return rc;
216 }
217
218 // Destroy attributes now.
219
220 pthread_attr_destroy(&attr);
221
222 // Return:
223
224 return 0;
225 }
226
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227 kumpf 1.6 ThreadType Threads::self()
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228 mike 1.2 {
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229 mike 1.4 ThreadType tt;
230 tt.thread = pthread_self();
231 return tt;
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232 mike 1.2 }
233
234 #endif /* PEGASUS_HAVE_PTHREADS */
235
236 PEGASUS_NAMESPACE_END
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Return to
Threads.cpp
CVS log
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