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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2011 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
/**
* \file SDL_cpuinfo.h
*
* CPU feature detection for SDL.
*/
#ifndef _SDL_cpuinfo_h
#define _SDL_cpuinfo_h
#include "SDL_stdinc.h"
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
extern "C" {
/* *INDENT-ON* */
#endif
/* This is a guess for the cacheline size used for padding.
* Most x86 processors have a 64 byte cache line.
* The 64-bit PowerPC processors have a 128 byte cache line.
* We'll use the larger value to be generally safe.
*/
#define SDL_CACHELINE_SIZE 128
/**
* This function returns the number of CPU cores available.
*/
extern DECLSPEC int SDLCALL SDL_GetCPUCount(void);
/**
* This function returns the L1 cache line size of the CPU
*
* This is useful for determining multi-threaded structure padding
* or SIMD prefetch sizes.
*/
extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void);
/**
* This function returns true if the CPU has the RDTSC instruction.
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void);
/**
* This function returns true if the CPU has MMX features.
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void);
/**
* This function returns true if the CPU has SSE features.
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void);
/**
* This function returns true if the CPU has SSE2 features.
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void);
/**
* This function returns true if the CPU has SSE3 features.
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void);
/**
* This function returns true if the CPU has SSE4 features.
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE4(void);
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
}
/* *INDENT-ON* */
#endif
#include "close_code.h"
#endif /* _SDL_cpuinfo_h */
/* vi: set ts=4 sw=4 expandtab: */
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