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cpuinfo.h
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cpuinfo.h
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/*
* Copyright 2016 Alexander Peslyak
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(__linux__) && (defined(__x86_64__) || defined(__i386__))
#define HAVE_CPUINFO
#include <stdint.h>
#include <sched.h>
#define CPUINFO_LOGICAL_MAX 1024
#define CPUINFO_CHIP_MAX 16
#define CPUINFO_CORE_MAX 256
typedef struct {
struct {
uint32_t chip, core, seq;
} log2phy[CPUINFO_LOGICAL_MAX];
uint32_t phy2log[CPUINFO_CHIP_MAX][CPUINFO_CORE_MAX];
uint32_t logical, physical;
} cpuinfo_t;
extern cpuinfo_t cpuinfo;
extern int cpuinfo_init(void);
#endif