1 /*
2 * File: priority2.c
3 *
4 *
5 * --------------------------------------------------------------------------
6 *
7 * Pthreads-win32 - POSIX Threads Library for Win32
8 * Copyright(C) 1998 John E. Bossom
9 * Copyright(C) 1999,2005 Pthreads-win32 contributors
10 *
11 * Contact Email: rpj@callisto.canberra.edu.au
12 *
13 * The current list of contributors is contained
14 * in the file CONTRIBUTORS included with the source
15 * code distribution. The list can also be seen at the
16 * following World Wide Web location:
17 * http://sources.redhat.com/pthreads-win32/contributors.html
18 *
19 * This library is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU Lesser General Public
21 * License as published by the Free Software Foundation; either
22 * version 2 of the License, or (at your option) any later version.
23 *
24 * This library is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * Lesser General Public License for more details.
28 *
29 * You should have received a copy of the GNU Lesser General Public
30 * License along with this library in the file COPYING.LIB;
31 * if not, write to the Free Software Foundation, Inc.,
32 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
33 *
34 * --------------------------------------------------------------------------
35 *
36 * Test Synopsis:
37 * - Test thread priority setting after creation.
38 *
39 * Test Method (Validation or Falsification):
40 * -
41 *
42 * Requirements Tested:
43 * -
44 *
45 * Features Tested:
46 * -
47 *
48 * Cases Tested:
49 * -
50 *
51 * Description:
52 * -
53 *
54 * Environment:
55 * -
56 *
57 * Input:
58 * - None.
59 *
60 * Output:
61 * - File name, Line number, and failed expression on failure.
62 * - No output on success.
63 *
64 * Assumptions:
65 * -
66 *
67 * Pass Criteria:
68 * - Process returns zero exit status.
69 *
70 * Fail Criteria:
71 * - Process returns non-zero exit status.
72 */
73
74 #include "test.h"
75
76 enum {
77 PTW32TEST_THREAD_INIT_PRIO = 0,
78 PTW32TEST_MAXPRIORITIES = 512
79 };
80
81 int minPrio;
82 int maxPrio;
83 int validPriorities[PTW32TEST_MAXPRIORITIES];
84 pthread_barrier_t startBarrier, endBarrier;
85
func(void * arg)86 void * func(void * arg)
87 {
88 int policy;
89 int result;
90 struct sched_param param;
91
92 result = pthread_barrier_wait(&startBarrier);
93 assert(result == 0 || result == PTHREAD_BARRIER_SERIAL_THREAD);
94 assert(pthread_getschedparam(pthread_self(), &policy, ¶m) == 0);
95 assert(policy == SCHED_OTHER);
96 result = pthread_barrier_wait(&endBarrier);
97 assert(result == 0 || result == PTHREAD_BARRIER_SERIAL_THREAD);
98 return (void *) (size_t) param.sched_priority;
99 }
100
101
102 void *
getValidPriorities(void * arg)103 getValidPriorities(void * arg)
104 {
105 int prioSet;
106 pthread_t thread = pthread_self();
107 HANDLE threadH = pthread_getw32threadhandle_np(thread);
108 struct sched_param param;
109
110 for (prioSet = minPrio;
111 prioSet <= maxPrio;
112 prioSet++)
113 {
114 /*
115 * If prioSet is invalid then the threads priority is unchanged
116 * from the previous value. Make the previous value a known
117 * one so that we can check later.
118 */
119 param.sched_priority = prioSet;
120 assert(pthread_setschedparam(thread, SCHED_OTHER, ¶m) == 0);
121 validPriorities[prioSet+(PTW32TEST_MAXPRIORITIES/2)] = GetThreadPriority(threadH);
122 }
123
124 return (void *) 0;
125 }
126
127
128 int
main()129 main()
130 {
131 pthread_t t;
132 void * result = NULL;
133 int result2;
134 struct sched_param param;
135
136 assert((maxPrio = sched_get_priority_max(SCHED_OTHER)) != -1);
137 assert((minPrio = sched_get_priority_min(SCHED_OTHER)) != -1);
138
139 assert(pthread_create(&t, NULL, getValidPriorities, NULL) == 0);
140 assert(pthread_join(t, &result) == 0);
141
142 assert(pthread_barrier_init(&startBarrier, NULL, 2) == 0);
143 assert(pthread_barrier_init(&endBarrier, NULL, 2) == 0);
144
145 /* Set the thread's priority to a known initial value.
146 * If the new priority is invalid then the threads priority
147 * is unchanged from the previous value.
148 */
149 SetThreadPriority(pthread_getw32threadhandle_np(pthread_self()),
150 PTW32TEST_THREAD_INIT_PRIO);
151
152 for (param.sched_priority = minPrio;
153 param.sched_priority <= maxPrio;
154 param.sched_priority++)
155 {
156 assert(pthread_create(&t, NULL, func, NULL) == 0);
157 assert(pthread_setschedparam(t, SCHED_OTHER, ¶m) == 0);
158 result2 = pthread_barrier_wait(&startBarrier);
159 assert(result2 == 0 || result2 == PTHREAD_BARRIER_SERIAL_THREAD);
160 result2 = pthread_barrier_wait(&endBarrier);
161 assert(result2 == 0 || result2 == PTHREAD_BARRIER_SERIAL_THREAD);
162 assert(GetThreadPriority(pthread_getw32threadhandle_np(t)) ==
163 validPriorities[param.sched_priority+(PTW32TEST_MAXPRIORITIES/2)]);
164 pthread_join(t, &result);
165 assert(param.sched_priority == (int) (size_t) result);
166 fprintf (stderr, ".");
167 }
168
169 return 0;
170 }
171