Jack2: JackAtomic_os.h Source File

Jack2 1.9.12

windows/JackAtomic_os.h
1 /*
2 Copyright (C) 2004-2008 Grame
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published by
6 the Free Software Foundation; either version 2.1 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17
18 */
19
20 #ifndef __JackAtomic_WIN32__
21 #define __JackAtomic_WIN32__
22
23 #include "JackTypes.h"
24
25 #ifndef __MINGW32__
26 #ifdef __SMP__
27 # define LOCK lock
28 #else
29 # define LOCK
30 #endif
31
32 #ifndef inline
33 #define inline __inline
34 #endif
35
36 //----------------------------------------------------------------
37 // CAS functions
38 //----------------------------------------------------------------
39 inline char CAS(volatile UInt32 value, UInt32 newvalue, volatile void * addr)
40 {
41 register char c;
42 __asm {
43 push ebx
44 push esi
45 mov esi, addr
46 mov eax, value
47 mov ebx, newvalue
48 LOCK cmpxchg dword ptr [esi], ebx
49 sete c
50 pop esi
51 pop ebx
52 }
53 return c;
54 }
55
56 #else
57
58 #define LOCK "lock ; "
59
60 static inline char CAS(volatile UInt32 value, UInt32 newvalue, volatile void* addr)
61 {
62 register char ret;
63 __asm__ __volatile__ (
64 "# CAS \n\t"
65 LOCK "cmpxchg %2, (%1) \n\t"
66 "sete %0 \n\t"
67 : "=a" (ret)
68 : "c" (addr), "d" (newvalue), "a" (value)
69 );
70 return ret;
71 }
72
73 #endif
74
75 #endif
76