From 2d4c46c975eb916dc622cc729a1a8d397582a76f Mon Sep 17 00:00:00 2001 From: David Sherret Date: Mon, 28 Nov 2022 17:28:54 -0500 Subject: refactor: create util folder, move nap_sym to napi/sym, move http_cache to cache folder (#16857) --- cli/util/unix.rs | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 cli/util/unix.rs (limited to 'cli/util/unix.rs') diff --git a/cli/util/unix.rs b/cli/util/unix.rs new file mode 100644 index 000000000..f282f6cfe --- /dev/null +++ b/cli/util/unix.rs @@ -0,0 +1,45 @@ +// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license. + +/// Raise soft file descriptor limit to hard file descriptor limit. +/// This is the difference between `ulimit -n` and `ulimit -n -H`. +pub fn raise_fd_limit() { + #[cfg(unix)] + // TODO(bartlomieju): + #[allow(clippy::undocumented_unsafe_blocks)] + unsafe { + let mut limits = libc::rlimit { + rlim_cur: 0, + rlim_max: 0, + }; + + if 0 != libc::getrlimit(libc::RLIMIT_NOFILE, &mut limits) { + return; + } + + if limits.rlim_cur == libc::RLIM_INFINITY { + return; + } + + // No hard limit? Do a binary search for the effective soft limit. + if limits.rlim_max == libc::RLIM_INFINITY { + let mut min = limits.rlim_cur; + let mut max = 1 << 20; + + while min + 1 < max { + limits.rlim_cur = min + (max - min) / 2; + match libc::setrlimit(libc::RLIMIT_NOFILE, &limits) { + 0 => min = limits.rlim_cur, + _ => max = limits.rlim_cur, + } + } + + return; + } + + // Raise the soft limit to the hard limit. + if limits.rlim_cur < limits.rlim_max { + limits.rlim_cur = limits.rlim_max; + libc::setrlimit(libc::RLIMIT_NOFILE, &limits); + } + } +} -- cgit v1.2.3