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4be222528d89e7ebab68167b804972f6893e5e77
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scripts
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atomic
/
fallbacks
/
try_cmpxchg
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cat
<<
EOF
static
inline
bool
$
{
atomic
}
_try_cmpxchg$
{
order
}(
$
{
atomic
}
_t
*
v
,
$
{
int
}
*
old
,
$
{
int
}
new
)
{
$
{
int
}
r
,
o
=
*
old
;
r
=
$
{
atomic
}
_cmpxchg$
{
order
}(
v
,
o
,
new
);
if
(
unlikely
(
r
!=
o
))
*
old
=
r
;
return
likely
(
r
==
o
);
}
EOF