| 1 |
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| 2 | /*******************************************************************************
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| 3 | * Header Files *
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| 4 | *******************************************************************************/
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| 5 | #include <mach/thread_act.h>
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| 6 | #include <mach/thread_policy.h>
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| 7 | #include <mach/thread_info.h>
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| 8 | #include <mach/host_info.h>
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| 9 | #include <mach/mach_init.h>
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| 10 | #include <mach/mach_host.h>
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| 11 | #include <pthread.h>
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| 12 | #include <sched.h>
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| 13 | #include <stdio.h>
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| 14 | #include <stdlib.h>
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| 15 | #include <string.h>
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| 16 |
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| 17 |
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| 18 | static void thread_print_policies(int fDefault)
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| 19 | {
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| 20 | thread_extended_policy_data_t Extended = { 0 };
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| 21 | thread_time_constraint_policy_data_t TimeConstraint = { 0, 0, 0, 1 };
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| 22 | thread_precedence_policy_data_t Precedence = { 0 };
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| 23 | #ifdef THREAD_AFFINITY_POLICY /* 10.5 */
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| 24 | thread_affinity_policy_data_t Affinity = { 0 };
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| 25 | #endif
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| 26 | boolean_t GetDefault;
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| 27 | mach_msg_type_number_t Count;
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| 28 | kern_return_t krc;
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| 29 |
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| 30 | GetDefault = fDefault;
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| 31 | Count = THREAD_EXTENDED_POLICY_COUNT;
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| 32 | krc = thread_policy_get(mach_thread_self(), THREAD_EXTENDED_POLICY, (thread_policy_t)&Extended, &Count, &GetDefault);
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| 33 | printf("THREAD_EXTENDED_POLICY: krc=%#x default=%d timeshare=%d (%#x)\n",
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| 34 | krc, GetDefault, Extended.timeshare, Extended.timeshare);
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| 35 |
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| 36 | GetDefault = fDefault;
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| 37 | Count = THREAD_PRECEDENCE_POLICY_COUNT;
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| 38 | krc = thread_policy_get(mach_thread_self(), THREAD_PRECEDENCE_POLICY, (thread_policy_t)&Precedence, &Count, &GetDefault);
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| 39 | printf("THREAD_PRECEDENCE_POLICY: krc=%#x default=%d importance=%d (%#x)\n",
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| 40 | krc, GetDefault, Precedence.importance, Precedence.importance);
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| 41 |
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| 42 | GetDefault = fDefault;
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| 43 | Count = THREAD_TIME_CONSTRAINT_POLICY_COUNT;
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| 44 | krc = thread_policy_get(mach_thread_self(), THREAD_TIME_CONSTRAINT_POLICY, (thread_policy_t)&TimeConstraint, &Count, &GetDefault);
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| 45 | printf("THREAD_TIME_CONSTRAINT_POLICY: krc=%#x default=%d period=%u (%#x) computation=%u (%#x) constraint=%u (%#x) preemptible=%d\n",
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| 46 | krc, GetDefault, TimeConstraint.period, TimeConstraint.period,
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| 47 | TimeConstraint.computation, TimeConstraint.computation,
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| 48 | TimeConstraint.constraint, TimeConstraint.constraint,
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| 49 | TimeConstraint.preemptible);
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| 50 |
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| 51 | #ifdef THREAD_AFFINITY_POLICY /* 10.5 */
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| 52 | GetDefault = fDefault;
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| 53 | Count = THREAD_AFFINITY_POLICY_COUNT;
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| 54 | krc = thread_policy_get(mach_thread_self(), THREAD_AFFINITY_POLICY, (thread_policy_t)&Affinity, &Count, &GetDefault);
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| 55 | printf("THREAD_AFFINITY_POLICY: krc=%#x default=%d affinity_tag=%d (%#x)\n",
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| 56 | krc, GetDefault, Affinity.affinity_tag, Affinity.affinity_tag);
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| 57 | #endif
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| 58 |
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| 59 | if (!fDefault)
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| 60 | {
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| 61 | struct sched_param Param;
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| 62 | int iPolicy = 0;
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| 63 | struct thread_basic_info BasicInfo = {{0,0},{0,0},0,0,0,0,0,0};
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| 64 | struct policy_timeshare_info TSInfo = {0,0,0,0,0};
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| 65 | int rc;
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| 66 | int i;
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| 67 |
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| 68 | memset(&Param, 0, sizeof(Param));
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| 69 | rc = pthread_getschedparam(pthread_self(), &iPolicy, &Param);
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| 70 | printf("pthread_getschedparam: rc=%d iPolicy=%d (%#x) sched_priority=%d (%#x) opaque=%d (%#x)\n",
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| 71 | rc, iPolicy, iPolicy, Param.sched_priority, Param.sched_priority,
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| 72 | #ifdef THREAD_AFFINITY_POLICY /* 10.5 */
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| 73 | *(int *)&Param.__opaque, *(int *)&Param.__opaque);
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| 74 | #else
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| 75 | *(int *)&Param.opaque, *(int *)&Param.opaque);
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| 76 | #endif
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| 77 |
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| 78 | Count = THREAD_BASIC_INFO_COUNT;
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| 79 | krc = thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)&BasicInfo, &Count);
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| 80 | printf("THREAD_BASIC_INFO: krc=%#x user_time=%d.%06d system_time=%d.%06d cpu_usage=%d policy=%d\n"
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| 81 | " run_state=%d flags=%#x suspend_count=%d sleep_time=%d\n",
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| 82 | krc,
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| 83 | BasicInfo.user_time.seconds, BasicInfo.user_time.microseconds,
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| 84 | BasicInfo.system_time.seconds, BasicInfo.system_time.microseconds,
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| 85 | BasicInfo.cpu_usage,
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| 86 | BasicInfo.policy,
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| 87 | BasicInfo.run_state,
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| 88 | BasicInfo.flags,
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| 89 | BasicInfo.suspend_count,
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| 90 | BasicInfo.sleep_time);
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| 91 |
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| 92 | Count = POLICY_TIMESHARE_INFO_COUNT;
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| 93 | krc = thread_info(mach_thread_self(), THREAD_SCHED_TIMESHARE_INFO, (thread_info_t)&TSInfo, &Count);
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| 94 | printf("THREAD_SCHED_TIMESHARE_INFO: krc=%#x max_priority=%d (%#x) base_priority=%d (%#x) cur_priority=%d (%#x)\n"
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| 95 | " depressed=%d depress_priority=%d (%#x)\n",
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| 96 | krc,
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| 97 | TSInfo.max_priority, TSInfo.max_priority,
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| 98 | TSInfo.base_priority, TSInfo.base_priority,
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| 99 | TSInfo.cur_priority, TSInfo.cur_priority,
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| 100 | TSInfo.depressed,
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| 101 | TSInfo.depress_priority, TSInfo.depress_priority);
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| 102 | }
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| 103 | else
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| 104 | {
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| 105 | host_priority_info_data_t PriorityInfo = {0,0,0,0,0,0,0,0};
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| 106 |
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| 107 | Count = HOST_PRIORITY_INFO_COUNT;
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| 108 | krc = host_info(mach_host_self(), HOST_PRIORITY_INFO, (host_info_t)&PriorityInfo, &Count);
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| 109 | printf("HOST_PRIORITY_INFO: krc=%#x \n"
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| 110 | " kernel_priority=%2d (%#x)\n"
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| 111 | " system_priority=%2d (%#x)\n"
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| 112 | " server_priority=%2d (%#x)\n"
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| 113 | " user_priority=%2d (%#x)\n"
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| 114 | " depress_priority=%2d (%#x)\n"
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| 115 | " idle_priority=%2d (%#x)\n"
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| 116 | " minimum_priority=%2d (%#x)\n"
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| 117 | " maximum_priority=%2d (%#x)\n",
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| 118 | krc,
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| 119 | PriorityInfo.kernel_priority, PriorityInfo.kernel_priority,
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| 120 | PriorityInfo.system_priority, PriorityInfo.system_priority,
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| 121 | PriorityInfo.server_priority, PriorityInfo.server_priority,
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| 122 | PriorityInfo.user_priority, PriorityInfo.user_priority,
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| 123 | PriorityInfo.depress_priority, PriorityInfo.depress_priority,
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| 124 | PriorityInfo.idle_priority, PriorityInfo.idle_priority,
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| 125 | PriorityInfo.minimum_priority, PriorityInfo.minimum_priority,
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| 126 | PriorityInfo.maximum_priority, PriorityInfo.maximum_priority);
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | int main()
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| 131 | {
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| 132 | struct sched_param Param;
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| 133 | int iPolicy;
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| 134 | int iPriority;
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| 135 | int rc;
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| 136 |
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| 137 | printf("tstDarwinSched: Default policies:\n");
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| 138 | thread_print_policies(1);
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| 139 |
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| 140 | printf("tstDarwinSched: Current policies:\n");
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| 141 | thread_print_policies(0);
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| 142 |
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| 143 |
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| 144 | printf("tstDarwinSched:\n");
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| 145 | printf("tstDarwinSched: Trying max priority using pthread API\n");
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| 146 | iPolicy = SCHED_OTHER;
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| 147 | memset(&Param, 0, sizeof(Param));
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| 148 | pthread_getschedparam(pthread_self(), &iPolicy, &Param);
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| 149 | Param.sched_priority = iPriority = sched_get_priority_max(iPolicy);
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| 150 | rc = pthread_setschedparam(pthread_self(), iPolicy, &Param);
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| 151 | if (!rc)
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| 152 | {
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| 153 | do
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| 154 | {
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| 155 | Param.sched_priority = ++iPriority;
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| 156 | rc = pthread_setschedparam(pthread_self(), iPolicy, &Param);
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| 157 | } while (!rc);
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| 158 | iPriority--;
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| 159 | rc = 0;
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| 160 | }
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| 161 | printf("tstDarwinSched: pthread_setschedparam(iPriority=%d [max=%d]) -> %d\n",
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| 162 | iPriority, sched_get_priority_max(iPolicy), rc);
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| 163 | thread_print_policies(0);
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| 164 |
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| 165 |
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| 166 | printf("tstDarwinSched:\n");
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| 167 | printf("tstDarwinSched: Trying min priority using pthread API\n");
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| 168 | iPolicy = SCHED_OTHER;
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| 169 | memset(&Param, 0, sizeof(Param));
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| 170 | pthread_getschedparam(pthread_self(), &iPolicy, &Param);
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| 171 | Param.sched_priority = iPriority = sched_get_priority_min(iPolicy);
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| 172 | rc = pthread_setschedparam(pthread_self(), iPolicy, &Param);
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| 173 | if (!rc)
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| 174 | {
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| 175 | do
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| 176 | {
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| 177 | Param.sched_priority = --iPriority;
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| 178 | rc = pthread_setschedparam(pthread_self(), iPolicy, &Param);
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| 179 | } while (!rc);
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| 180 | iPriority++;
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| 181 | rc = 0;
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| 182 | }
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| 183 | printf("tstDarwinSched: pthread_setschedparam(iPriority=%d [min=%d]) -> %d\n",
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| 184 | iPriority, sched_get_priority_min(iPolicy), rc);
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| 185 | thread_print_policies(0);
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| 186 |
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| 187 |
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| 188 | return 0;
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| 189 | }
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| 190 |
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