> 4 byte atomic write

> 4 byte atomic write

Postby Guest » Mon Sep 11, 2006 7:25 pm

Is it possible to write more than 4 bytes atomically?
Guest
 

Postby VDO » Mon Sep 11, 2006 7:28 pm

mem qword 0

LOCK CMPXCH8B [mem]

if (edx:eax == dest)
{
zf = 1
dest = ecx:ebx
}
else
{
zf = 0
edx:eax = dest
}
VDO
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