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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2010-2016. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
/*
* Description: CPU topology and related functionality
*
* Author: Rickard Green
*/
#ifndef ERL_CPU_TOPOLOGY_H__
#define ERL_CPU_TOPOLOGY_H__
void erts_pre_early_init_cpu_topology(int *max_rg_p,
int *conf_p,
int *onln_p,
int *avail_p);
void erts_early_init_cpu_topology(int no_schedulers,
int *max_main_threads_p,
int max_reader_groups,
int *reader_groups_p);
void erts_init_cpu_topology(void);
#define ERTS_INIT_SCHED_BIND_TYPE_SUCCESS 0
#define ERTS_INIT_SCHED_BIND_TYPE_NOT_SUPPORTED 1
#define ERTS_INIT_SCHED_BIND_TYPE_ERROR_NO_CPU_TOPOLOGY 2
#define ERTS_INIT_SCHED_BIND_TYPE_ERROR_BAD_TYPE 3
int erts_init_scheduler_bind_type_string(char *how);
#define ERTS_INIT_CPU_TOPOLOGY_OK 0
#define ERTS_INIT_CPU_TOPOLOGY_INVALID_ID 1
#define ERTS_INIT_CPU_TOPOLOGY_INVALID_ID_RANGE 2
#define ERTS_INIT_CPU_TOPOLOGY_INVALID_HIERARCHY 3
#define ERTS_INIT_CPU_TOPOLOGY_INVALID_ID_TYPE 4
#define ERTS_INIT_CPU_TOPOLOGY_INVALID_NODES 5
#define ERTS_INIT_CPU_TOPOLOGY_MISSING_LID 6
#define ERTS_INIT_CPU_TOPOLOGY_NOT_UNIQUE_LIDS 7
#define ERTS_INIT_CPU_TOPOLOGY_NOT_UNIQUE_ENTITIES 8
#define ERTS_INIT_CPU_TOPOLOGY_MISSING 9
int erts_init_cpu_topology_string(char *topology_str);
void erts_sched_check_cpu_bind(ErtsSchedulerData *esdp);
#ifdef ERTS_SMP
void erts_sched_init_check_cpu_bind(ErtsSchedulerData *esdp);
void erts_sched_check_cpu_bind_prep_suspend(ErtsSchedulerData *esdp);
void erts_sched_check_cpu_bind_post_suspend(ErtsSchedulerData *esdp);
#endif
int erts_update_cpu_info(void);
Eterm erts_bind_schedulers(Process *c_p, Eterm how);
Eterm erts_get_schedulers_binds(Process *c_p);
Eterm erts_get_reader_groups_map(Process *c_p);
Eterm erts_set_cpu_topology(Process *c_p, Eterm term);
Eterm erts_get_cpu_topology_term(Process *c_p, Eterm which);
int erts_update_cpu_info(void);
void erts_get_logical_processors(int *conf, int *onln, int *avail);
int erts_sched_bind_atthrcreate_prepare(void);
int erts_sched_bind_atthrcreate_child(int unbind);
void erts_sched_bind_atthrcreate_parent(int unbind);
int erts_sched_bind_atfork_prepare(void);
int erts_sched_bind_atfork_child(int unbind);
char *erts_sched_bind_atvfork_child(int unbind);
void erts_sched_bind_atfork_parent(int unbind);
Eterm erts_fake_scheduler_bindings(Process *p, Eterm how);
Eterm erts_debug_cpu_groups_map(Process *c_p, int groups);
typedef void (*erts_cpu_groups_callback_t)(int,
ErtsSchedulerData *,
int,
void *);
void erts_add_cpu_groups(int groups,
erts_cpu_groups_callback_t callback,
void *arg);
void erts_remove_cpu_groups(erts_cpu_groups_callback_t callback,
void *arg);
#endif
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