diff --git a/common/fdlimit/fdlimit_darwin.go b/common/fdlimit/fdlimit_darwin.go new file mode 100644 index 0000000000..ab92c93754 --- /dev/null +++ b/common/fdlimit/fdlimit_darwin.go @@ -0,0 +1,70 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build darwin + +package fdlimit + +import "syscall" + +// Raise tries to maximize the file descriptor allowance of this process +// to the maximum hard-limit allowed by the OS. +func Raise(max uint64) error { + // Get the current limit + var limit syscall.Rlimit + if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil { + return err + } + // Try to update the limit to the max allowance + limit.Cur = limit.Max + if limit.Cur > max { + limit.Cur = max + } + // https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/getrlimit.2.html + // + // setrlimit() now returns with errno set to EINVAL in places that histori-cally historically + // cally succeeded. It no longer accepts "rlim_cur = RLIM_INFINITY" for + // RLIM_NOFILE. Use "rlim_cur = min(OPEN_MAX, rlim_max)". + // + // OPEN_MAX is 10240 + if limit.Cur > 10240 { + limit.Cur = 10240 + } + if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil { + return err + } + return nil +} + +// Current retrieves the number of file descriptors allowed to be opened by this +// process. +func Current() (int, error) { + var limit syscall.Rlimit + if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil { + return 0, err + } + return int(limit.Cur), nil +} + +// Maximum retrieves the maximum number of file descriptors this process is +// allowed to request for itself. +func Maximum() (int, error) { + var limit syscall.Rlimit + if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil { + return 0, err + } + return int(limit.Max), nil +} diff --git a/common/fdlimit/fdlimit_unix.go b/common/fdlimit/fdlimit_unix.go index a258132353..06853c0a9c 100644 --- a/common/fdlimit/fdlimit_unix.go +++ b/common/fdlimit/fdlimit_unix.go @@ -14,7 +14,7 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -// +build linux darwin netbsd openbsd solaris +// +build linux netbsd openbsd solaris package fdlimit