windows/JackAtomic_os.h
/*
Copyright (C) 2004-2008 Grame
This program 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 program 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __JackAtomic_WIN32__
#define __JackAtomic_WIN32__
#include "JackTypes.h"
#ifndef __MINGW32__
#ifdef __SMP__
# define LOCK lock
#else
# define LOCK
#endif
#ifndef inline
#define inline __inline
#endif
//----------------------------------------------------------------
// CAS functions
//----------------------------------------------------------------
inline char CAS(volatile UInt32 value, UInt32 newvalue, volatile void * addr)
{
register char c;
__asm {
push ebx
push esi
mov esi, addr
mov eax, value
mov ebx, newvalue
LOCK cmpxchg dword ptr [esi], ebx
sete c
pop esi
pop ebx
}
return c;
}
#else
#define LOCK "lock ; "
static inline char CAS(volatile UInt32 value, UInt32 newvalue, volatile void* addr)
{
register char ret;
__asm__ __volatile__ (
"# CAS \n\t"
LOCK "cmpxchg %2, (%1) \n\t"
"sete %0 \n\t"
: "=a" (ret)
: "c" (addr), "d" (newvalue), "a" (value)
);
return ret;
}
#endif
#endif