diff options
Diffstat (limited to 'lib/PublicInbox/IPC.pm')
| -rw-r--r-- | lib/PublicInbox/IPC.pm | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/lib/PublicInbox/IPC.pm b/lib/PublicInbox/IPC.pm index 528b9133..39021f42 100644 --- a/lib/PublicInbox/IPC.pm +++ b/lib/PublicInbox/IPC.pm @@ -451,12 +451,18 @@ sub DESTROY { ipc_worker_stop($self); } +# _SC_NPROCESSORS_ONLN = 84 on both Linux glibc and musl, +# emitted using: $^X devel/sysdefs-list +my %NPROCESSORS_ONLN = ( + linux => 84, + freebsd => 58, + openbsd => 503, + netbsd => 1002 +); + sub detect_nproc () { - # _SC_NPROCESSORS_ONLN = 84 on both Linux glibc and musl - return POSIX::sysconf(84) if $^O eq 'linux'; - return POSIX::sysconf(58) if $^O eq 'freebsd'; - return POSIX::sysconf(503) if $^O eq 'openbsd'; - # TODO: more OSes + my $n = $NPROCESSORS_ONLN{$^O}; + return POSIX::sysconf($n) if defined $n; # getconf(1) is POSIX, but *NPROCESSORS* vars are not for (qw(_NPROCESSORS_ONLN NPROCESSORS_ONLN)) { |