diff options
| author | Alejandro Colomar <alx@kernel.org> | 2023-11-03 17:41:22 +0100 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2023-11-03 23:05:48 +0100 |
| commit | 2be04e240deaac14500e079c956611e2c1d0c6f3 (patch) | |
| tree | 7eaaff79a06151fa6d3cb90aebe413a8862ce49a /share | |
| parent | 55dd5d7255c85c3229efb42cdedfef496d983c76 (diff) | |
bin/grepc: Optimize
Call pcre2grep(1) only once, which allows removing named pipes. This is
an important optimization, and will also allow accepting several file
names in the command line (in a future commit). The source code is also
significantly simplified.
It has a caveat: this single call to pcre2grep(1) will consume more
resources, and will crash on certain input files. The workaround is to
restrict the search to just one or a few types of code. Document this
in the manual page. This caveat only applies to very specific files,
which so far I've only found in the Linux kernel source tree.
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man1/grepc.1 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/share/man/man1/grepc.1 b/share/man/man1/grepc.1 index 2d9cde5..e80c648 100644 --- a/share/man/man1/grepc.1 +++ b/share/man/man1/grepc.1 @@ -151,6 +151,13 @@ This option can be passed multiple times to search for various types of code. Default: .BR "e f m t" . +.SH CAVEATS +In some cases, +internal calls to +.MR pcre2grep 1 +may fail after consuming too much resources. +To solve that, +restrict the "types of code" of your search. .SH EXAMPLES .EX .RB \(ti/src/nginx/unit$ " grepc nxt_sprintf;" |