diff options
| author | Adam Jackson <ajax@redhat.com> | 2011-12-13 21:00:05 -0500 |
|---|---|---|
| committer | Adam Jackson <ajax@redhat.com> | 2012-01-06 13:29:53 -0500 |
| commit | 11977fab546da35d579ebe285e3c26864007805e (patch) | |
| tree | ec8b3a9481677da0404cb0bbe39c2c9ab60bb60f /Xext/xace.c | |
| parent | a4553019a10b4e01cc06f3081db71a83338697b4 (diff) | |
xace: ricer tuning for XaceHook
gcc doesn't want to hoist the check for XaceHooks[hook] != NULL above the
varargs code for some reason, so do it ourselves.
Before:
40000000 trep @ 0.0010 msec (1050420.2/sec): PutImage 10x10 square
60000000 trep @ 0.0005 msec (1921147.6/sec): ShmPutImage 10x10 square
After:
40000000 trep @ 0.0009 msec (1087458.5/sec): PutImage 10x10 square
60000000 trep @ 0.0005 msec (2012238.6/sec): ShmPutImage 10x10 square
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Diffstat (limited to 'Xext/xace.c')
| -rw-r--r-- | Xext/xace.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Xext/xace.c b/Xext/xace.c index c757cad05..ef69fe363 100644 --- a/Xext/xace.c +++ b/Xext/xace.c @@ -101,6 +101,10 @@ int XaceHook(int hook, ...) } u; int *prv = NULL; /* points to return value from callback */ va_list ap; /* argument list */ + + if (!XaceHooks[hook]) + return Success; + va_start(ap, hook); /* Marshal arguments for passing to callback. |