mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2024-09-30 19:14:27 +00:00
acc333c40b
When GTS is running in a container runtime which has configured CPU or memory limits or under an init system that uses cgroups to impose CPU and memory limits the values the Go runtime sees for GOMAXPROCS and GOMEMLIMIT are still based on the host resources, not the cgroup. At least for the throttling middlewares which use GOMAXPROCS to configure their queue size, this can result in GTS running with values too big compared to the resources that will actuall be available to it. This introduces 2 dependencies which can pick up resource contraints from the current cgroup and tune the Go runtime accordingly. This should result in the different queues being appropriately sized and in general more predictable performance. These dependencies are a no-op on non-Linux systems or if running in a cgroup that doesn't set a limit on CPU or memory. The automatic tuning of GOMEMLIMIT can be disabled by either explicitly setting GOMEMLIMIT yourself or by setting AUTOMEMLIMIT=off. The automatic tuning of GOMAXPROCS can similarly be counteracted by setting GOMAXPROCS yourself.
101 lines
3.7 KiB
Go
101 lines
3.7 KiB
Go
// Go support for Protocol Buffers - Google's data interchange format
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//
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// Copyright 2016 The Go Authors. All rights reserved.
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// https://github.com/golang/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package proto
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// This file implements conversions between google.protobuf.Duration
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// and time.Duration.
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import (
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"errors"
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"fmt"
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"time"
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)
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const (
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// Range of a Duration in seconds, as specified in
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// google/protobuf/duration.proto. This is about 10,000 years in seconds.
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maxSeconds = int64(10000 * 365.25 * 24 * 60 * 60)
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minSeconds = -maxSeconds
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)
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// validateDuration determines whether the Duration is valid according to the
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// definition in google/protobuf/duration.proto. A valid Duration
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// may still be too large to fit into a time.Duration (the range of Duration
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// is about 10,000 years, and the range of time.Duration is about 290).
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func validateDuration(d *duration) error {
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if d == nil {
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return errors.New("duration: nil Duration")
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}
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if d.Seconds < minSeconds || d.Seconds > maxSeconds {
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return fmt.Errorf("duration: %#v: seconds out of range", d)
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}
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if d.Nanos <= -1e9 || d.Nanos >= 1e9 {
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return fmt.Errorf("duration: %#v: nanos out of range", d)
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}
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// Seconds and Nanos must have the same sign, unless d.Nanos is zero.
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if (d.Seconds < 0 && d.Nanos > 0) || (d.Seconds > 0 && d.Nanos < 0) {
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return fmt.Errorf("duration: %#v: seconds and nanos have different signs", d)
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}
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return nil
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}
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// DurationFromProto converts a Duration to a time.Duration. DurationFromProto
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// returns an error if the Duration is invalid or is too large to be
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// represented in a time.Duration.
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func durationFromProto(p *duration) (time.Duration, error) {
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if err := validateDuration(p); err != nil {
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return 0, err
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}
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d := time.Duration(p.Seconds) * time.Second
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if int64(d/time.Second) != p.Seconds {
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return 0, fmt.Errorf("duration: %#v is out of range for time.Duration", p)
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}
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if p.Nanos != 0 {
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d += time.Duration(p.Nanos)
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if (d < 0) != (p.Nanos < 0) {
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return 0, fmt.Errorf("duration: %#v is out of range for time.Duration", p)
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}
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}
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return d, nil
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}
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// DurationProto converts a time.Duration to a Duration.
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func durationProto(d time.Duration) *duration {
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nanos := d.Nanoseconds()
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secs := nanos / 1e9
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nanos -= secs * 1e9
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return &duration{
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Seconds: secs,
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Nanos: int32(nanos),
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}
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}
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