1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/* $Id: tstDarwinSched.cpp $ */
/** @file
* IPRT testcase - darwin scheduling.
*/
/*
* Copyright (C) 2009-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <mach/thread_act.h>
#include <mach/thread_policy.h>
#include <mach/thread_info.h>
#include <mach/host_info.h>
#include <mach/mach_init.h>
#include <mach/mach_host.h>
#include <pthread.h>
#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void thread_print_policies(int fDefault)
{
thread_extended_policy_data_t Extended = { 0 };
thread_time_constraint_policy_data_t TimeConstraint = { 0, 0, 0, 1 };
thread_precedence_policy_data_t Precedence = { 0 };
#ifdef THREAD_AFFINITY_POLICY /* 10.5 */
thread_affinity_policy_data_t Affinity = { 0 };
#endif
boolean_t GetDefault;
mach_msg_type_number_t Count;
kern_return_t krc;
GetDefault = fDefault;
Count = THREAD_EXTENDED_POLICY_COUNT;
krc = thread_policy_get(mach_thread_self(), THREAD_EXTENDED_POLICY, (thread_policy_t)&Extended, &Count, &GetDefault);
printf("THREAD_EXTENDED_POLICY: krc=%#x default=%d timeshare=%d (%#x)\n",
krc, GetDefault, Extended.timeshare, Extended.timeshare);
GetDefault = fDefault;
Count = THREAD_PRECEDENCE_POLICY_COUNT;
krc = thread_policy_get(mach_thread_self(), THREAD_PRECEDENCE_POLICY, (thread_policy_t)&Precedence, &Count, &GetDefault);
printf("THREAD_PRECEDENCE_POLICY: krc=%#x default=%d importance=%d (%#x)\n",
krc, GetDefault, Precedence.importance, Precedence.importance);
GetDefault = fDefault;
Count = THREAD_TIME_CONSTRAINT_POLICY_COUNT;
krc = thread_policy_get(mach_thread_self(), THREAD_TIME_CONSTRAINT_POLICY, (thread_policy_t)&TimeConstraint, &Count, &GetDefault);
printf("THREAD_TIME_CONSTRAINT_POLICY: krc=%#x default=%d period=%u (%#x) computation=%u (%#x) constraint=%u (%#x) preemptible=%d\n",
krc, GetDefault, TimeConstraint.period, TimeConstraint.period,
TimeConstraint.computation, TimeConstraint.computation,
TimeConstraint.constraint, TimeConstraint.constraint,
TimeConstraint.preemptible);
#ifdef THREAD_AFFINITY_POLICY /* 10.5 */
GetDefault = fDefault;
Count = THREAD_AFFINITY_POLICY_COUNT;
krc = thread_policy_get(mach_thread_self(), THREAD_AFFINITY_POLICY, (thread_policy_t)&Affinity, &Count, &GetDefault);
printf("THREAD_AFFINITY_POLICY: krc=%#x default=%d affinity_tag=%d (%#x)\n",
krc, GetDefault, Affinity.affinity_tag, Affinity.affinity_tag);
#endif
if (!fDefault)
{
struct sched_param Param;
int iPolicy = 0;
struct thread_basic_info BasicInfo = {{0,0},{0,0},0,0,0,0,0,0};
struct policy_timeshare_info TSInfo = {0,0,0,0,0};
int rc;
memset(&Param, 0, sizeof(Param));
rc = pthread_getschedparam(pthread_self(), &iPolicy, &Param);
printf("pthread_getschedparam: rc=%d iPolicy=%d (%#x) sched_priority=%d (%#x) opaque=%d (%#x)\n",
rc, iPolicy, iPolicy, Param.sched_priority, Param.sched_priority,
#ifdef THREAD_AFFINITY_POLICY /* 10.5 */
*(int *)&Param.__opaque, *(int *)&Param.__opaque);
#else
*(int *)&Param.opaque, *(int *)&Param.opaque);
#endif
Count = THREAD_BASIC_INFO_COUNT;
krc = thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)&BasicInfo, &Count);
printf("THREAD_BASIC_INFO: krc=%#x user_time=%d.%06d system_time=%d.%06d cpu_usage=%d policy=%d\n"
" run_state=%d flags=%#x suspend_count=%d sleep_time=%d\n",
krc,
BasicInfo.user_time.seconds, BasicInfo.user_time.microseconds,
BasicInfo.system_time.seconds, BasicInfo.system_time.microseconds,
BasicInfo.cpu_usage,
BasicInfo.policy,
BasicInfo.run_state,
BasicInfo.flags,
BasicInfo.suspend_count,
BasicInfo.sleep_time);
Count = POLICY_TIMESHARE_INFO_COUNT;
krc = thread_info(mach_thread_self(), THREAD_SCHED_TIMESHARE_INFO, (thread_info_t)&TSInfo, &Count);
printf("THREAD_SCHED_TIMESHARE_INFO: krc=%#x max_priority=%d (%#x) base_priority=%d (%#x) cur_priority=%d (%#x)\n"
" depressed=%d depress_priority=%d (%#x)\n",
krc,
TSInfo.max_priority, TSInfo.max_priority,
TSInfo.base_priority, TSInfo.base_priority,
TSInfo.cur_priority, TSInfo.cur_priority,
TSInfo.depressed,
TSInfo.depress_priority, TSInfo.depress_priority);
}
else
{
host_priority_info_data_t PriorityInfo = {0,0,0,0,0,0,0,0};
Count = HOST_PRIORITY_INFO_COUNT;
krc = host_info(mach_host_self(), HOST_PRIORITY_INFO, (host_info_t)&PriorityInfo, &Count);
printf("HOST_PRIORITY_INFO: krc=%#x \n"
" kernel_priority=%2d (%#x)\n"
" system_priority=%2d (%#x)\n"
" server_priority=%2d (%#x)\n"
" user_priority=%2d (%#x)\n"
" depress_priority=%2d (%#x)\n"
" idle_priority=%2d (%#x)\n"
" minimum_priority=%2d (%#x)\n"
" maximum_priority=%2d (%#x)\n",
krc,
PriorityInfo.kernel_priority, PriorityInfo.kernel_priority,
PriorityInfo.system_priority, PriorityInfo.system_priority,
PriorityInfo.server_priority, PriorityInfo.server_priority,
PriorityInfo.user_priority, PriorityInfo.user_priority,
PriorityInfo.depress_priority, PriorityInfo.depress_priority,
PriorityInfo.idle_priority, PriorityInfo.idle_priority,
PriorityInfo.minimum_priority, PriorityInfo.minimum_priority,
PriorityInfo.maximum_priority, PriorityInfo.maximum_priority);
}
}
int main()
{
struct sched_param Param;
int iPolicy;
int iPriority;
int rc;
printf("tstDarwinSched: Default policies:\n");
thread_print_policies(1);
printf("tstDarwinSched: Current policies:\n");
thread_print_policies(0);
printf("tstDarwinSched:\n");
printf("tstDarwinSched: Trying max priority using pthread API\n");
iPolicy = SCHED_OTHER;
memset(&Param, 0, sizeof(Param));
pthread_getschedparam(pthread_self(), &iPolicy, &Param);
Param.sched_priority = iPriority = sched_get_priority_max(iPolicy);
rc = pthread_setschedparam(pthread_self(), iPolicy, &Param);
if (!rc)
{
do
{
Param.sched_priority = ++iPriority;
rc = pthread_setschedparam(pthread_self(), iPolicy, &Param);
} while (!rc);
iPriority--;
rc = 0;
}
printf("tstDarwinSched: pthread_setschedparam(iPriority=%d [max=%d]) -> %d\n",
iPriority, sched_get_priority_max(iPolicy), rc);
thread_print_policies(0);
printf("tstDarwinSched:\n");
printf("tstDarwinSched: Trying min priority using pthread API\n");
iPolicy = SCHED_OTHER;
memset(&Param, 0, sizeof(Param));
pthread_getschedparam(pthread_self(), &iPolicy, &Param);
Param.sched_priority = iPriority = sched_get_priority_min(iPolicy);
rc = pthread_setschedparam(pthread_self(), iPolicy, &Param);
if (!rc)
{
do
{
Param.sched_priority = --iPriority;
rc = pthread_setschedparam(pthread_self(), iPolicy, &Param);
} while (!rc);
iPriority++;
rc = 0;
}
printf("tstDarwinSched: pthread_setschedparam(iPriority=%d [min=%d]) -> %d\n",
iPriority, sched_get_priority_min(iPolicy), rc);
thread_print_policies(0);
return 0;
}
|
