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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2006-2016. 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%
*/
#ifndef ERL_MISC_UTILS_H_
#define ERL_MISC_UTILS_H_
#include "erl_errno.h"
typedef struct erts_cpu_info_t_ erts_cpu_info_t;
typedef struct {
int node;
int processor;
int processor_node;
int core;
int thread;
int logical;
} erts_cpu_topology_t;
erts_cpu_info_t *erts_cpu_info_create(void);
void erts_cpu_info_destroy(erts_cpu_info_t *cpuinfo);
int erts_cpu_info_update(erts_cpu_info_t *cpuinfo);
int erts_get_cpu_configured(erts_cpu_info_t *cpuinfo);
int erts_get_cpu_online(erts_cpu_info_t *cpuinfo);
int erts_get_cpu_available(erts_cpu_info_t *cpuinfo);
char *erts_get_unbind_from_cpu_str(erts_cpu_info_t *cpuinfo);
int erts_get_available_cpu(erts_cpu_info_t *cpuinfo, int no);
int erts_get_cpu_topology_size(erts_cpu_info_t *cpuinfo);
int erts_get_cpu_topology(erts_cpu_info_t *cpuinfo,
erts_cpu_topology_t *topology);
int erts_is_cpu_available(erts_cpu_info_t *cpuinfo, int id);
int erts_bind_to_cpu(erts_cpu_info_t *cpuinfo, int cpu);
int erts_unbind_from_cpu(erts_cpu_info_t *cpuinfo);
int erts_unbind_from_cpu_str(char *str);
int erts_milli_sleep(long);
#ifdef __WIN32__
int erts_map_win_error_to_errno(DWORD win_error);
int erts_get_last_win_errno(void);
#endif
#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
#define __DARWIN__ 1
#endif
/*
* ERTS_PREMATURE_TIMEOUT() expects time units
* 1000 (millisec), 1000000 (microsec), or
* 1000000000 (nanosec). Might not work properly
* otherwise.
*/
#undef ERTS_USE_PREMATURE_TIMEOUT
#undef ERTS_PREMATURE_TIMEOUT
#if defined(__DARWIN__)
#define ERTS_USE_PREMATURE_TIMEOUT 1
#define ERTS_PREMATURE_TIMEOUT(TMO, TU) \
((TMO) >= 1 * ((TU) / 1000) \
? ((TMO) >= 20 * ((TU) / 1000) \
? 15 * ((TU) / 1000) \
: ((TMO) >= 5 * ((TU) / 1000) \
? 3 * ((TU) / 1000) \
: 5 * ((TU) / 10000))) \
: 0)
#else
#define ERTS_USE_PREMATURE_TIMEOUT 0
#define ERTS_PREMATURE_TIMEOUT(TMO, TU) (0)
#endif
#endif /* #ifndef ERL_MISC_UTILS_H_ */
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