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authorTavian Barnes <tavianator@tavianator.com>2024-05-23 14:28:02 -0400
committerTavian Barnes <tavianator@tavianator.com>2024-05-23 14:34:33 -0400
commit65a7814b2dbc10ea86610092f03d0c1df95d08ad (patch)
tree3075cb84811b6be8dba357f96dcbbf955905b2e3 /src/expr.c
parent07b0c50e94543a88f699fa60b577d8e53c978ff1 (diff)
downloadbfs-65a7814b2dbc10ea86610092f03d0c1df95d08ad.tar.xz
opt: Don't raise RLIMIT_NOFILE if it would prevent using posix_spawn()
If we raise RLIMIT_NOFILE, we have to lower it before calling exec() for compatibility with select(). If posix_spawn() doesn't support that, we fall back to fork(), which is quite a bit slower. Therefore, if we're going to exec() on most files, it's better to keep RLIMIT_NOFILE the same to avoid the fork() cost, even though it makes bftw() somewhat slower.
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