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| author | jilles <jilles@FreeBSD.org> | 2011-06-16 21:50:28 +0000 |
|---|---|---|
| committer | jilles <jilles@FreeBSD.org> | 2011-06-16 21:50:28 +0000 |
| commit | 00d33feb9db18288f251841bbebdf3b74f4d875e (patch) | |
| tree | 294e1c4d6e3e5c1512b2ca2ccbd4ef4b71e3362f /tools | |
| parent | b127ed6f91700e786b6d214b85775e125cb5688b (diff) | |
| download | FreeBSD-src-00d33feb9db18288f251841bbebdf3b74f4d875e.zip FreeBSD-src-00d33feb9db18288f251841bbebdf3b74f4d875e.tar.gz | |
sh: Reduce unnecessary forks with eval.
The eval special builtin now runs the code with EV_EXIT if it was run
with EV_EXIT itself.
In particular, this eliminates one fork when a command substitution contains
an eval command that ends with an external program or a subshell.
This is similar to what r220978 did for functions.
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/regression/bin/sh/expansion/cmdsubst11.0 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/regression/bin/sh/expansion/cmdsubst11.0 b/tools/regression/bin/sh/expansion/cmdsubst11.0 new file mode 100644 index 0000000..f1af547 --- /dev/null +++ b/tools/regression/bin/sh/expansion/cmdsubst11.0 @@ -0,0 +1,5 @@ +# $FreeBSD$ + +# Not required by POSIX but useful for efficiency. + +[ $$ = $(eval '${SH} -c echo\ \$PPID') ] |
