esp-idf/components/newlib/sysconf.c

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/*
* SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <unistd.h>
#include <errno.h>
#include "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#define CPU_NUM portNUM_PROCESSORS
long sysconf(int arg)
{
switch (arg) {
case _SC_NPROCESSORS_CONF:
case _SC_NPROCESSORS_ONLN:
return CPU_NUM;
default:
errno = EINVAL;
return -1;
}
}