1 files changed, 80 insertions, 0 deletions
diff --git a/windows/JackAtomic_os.h b/windows/JackAtomic_os.h
new file mode 100644
index 00000000..38947437
--- /dev/null
+++ b/windows/JackAtomic_os.h
@@ -0,0 +1,80 @@
+/*
+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
+
+#ifdef __SMP__
+#	define LOCK "lock ; "
+#else
+#	define LOCK ""
+#endif
+
+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
+