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Diffstat (limited to 'src/VBox/Runtime/testcase/tstDarwinSched.cpp')
| -rw-r--r-- | src/VBox/Runtime/testcase/tstDarwinSched.cpp | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstDarwinSched.cpp b/src/VBox/Runtime/testcase/tstDarwinSched.cpp new file mode 100644 index 00000000..0c5740d5 --- /dev/null +++ b/src/VBox/Runtime/testcase/tstDarwinSched.cpp @@ -0,0 +1,225 @@ +/* $Id: tstDarwinSched.cpp $ */ +/** @file + * IPRT testcase - darwin scheduling. + */ + +/* + * Copyright (C) 2009-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox 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. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* 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; +} + |