d30ff6cfae
Instead of constantly making these updates, let's just remove the year since things are stored in git anyways, and this is not an actual modern legal risk anymore.
58 lines
2.3 KiB
Go
58 lines
2.3 KiB
Go
// Mgmt
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// Copyright (C) James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// Additional permission under GNU GPL version 3 section 7
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//
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// If you modify this program, or any covered work, by linking or combining it
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// with embedded mcl code and modules (and that the embedded mcl code and
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// modules which link with this program, contain a copy of their source code in
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// the authoritative form) containing parts covered by the terms of any other
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// license, the licensors of this program grant you additional permission to
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// convey the resulting work. Furthermore, the licensors of this program grant
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// the original author, James Shubin, additional permission to update this
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// additional permission if he deems it necessary to achieve the goals of this
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// additional permission.
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//go:build !darwin
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package coresys
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import (
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"syscall"
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)
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const (
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// LoadScale factor scales the output from sysinfo to the correct float
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// value.
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LoadScale = 65536 // XXX: is this correct or should it be 65535?
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)
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// load returns the system load averages for the last minute, five minutes and
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// fifteen minutes. Calling this more often than once every five seconds seems
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// to be unnecessary, since the kernel only updates these values that often.
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// TODO: is the kernel update interval configurable?
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func load() (one, five, fifteen float64, err error) {
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var sysinfo syscall.Sysinfo_t
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if err = syscall.Sysinfo(&sysinfo); err != nil {
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return
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}
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one = float64(sysinfo.Loads[0]) / LoadScale
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five = float64(sysinfo.Loads[1]) / LoadScale
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fifteen = float64(sysinfo.Loads[2]) / LoadScale
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return
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}
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