0ad/source/lib/sysdep/cpu.h
Ralph Sennhauser 7dece41990
Fix includes in source/lib
Make include-what-you-use happy with some files in source/lib and fix
what needs to be fixed.

Ref: #8086
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>
2025-08-03 10:15:37 +02:00

65 lines
1.9 KiB
C++

/* Copyright (C) 2025 Wildfire Games.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* CPU and memory detection.
*/
#ifndef INCLUDED_CPU
#define INCLUDED_CPU
#include "lib/status.h"
#include "lib/sysdep/arch.h"
#include "lib/sysdep/compiler.h"
namespace ERR
{
const Status CPU_FEATURE_MISSING = -130000;
const Status CPU_UNKNOWN_OPCODE = -130001;
const Status CPU_UNKNOWN_VENDOR = -130002;
}
//-----------------------------------------------------------------------------
// CPU detection
/**
* @return string identifying the CPU (usually a cleaned-up version of the
* brand string)
**/
const char* cpu_IdentifierString();
/**
* pause in spin-wait loops, as a performance optimisation.
**/
inline void cpu_Pause()
{
#if MSC_VERSION && ARCH_X86_X64
_mm_pause();
#elif GCC_VERSION && ARCH_X86_X64
__asm__ __volatile__( "rep; nop" : : : "memory" );
#endif
}
#endif // #ifndef INCLUDED_CPU