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https://github.com/superseriousbusiness/gotosocial.git
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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.
70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
package dbus
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import (
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"context"
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"errors"
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)
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var errSignature = errors.New("dbus: mismatched signature")
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// Call represents a pending or completed method call.
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type Call struct {
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Destination string
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Path ObjectPath
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Method string
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Args []interface{}
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// Strobes when the call is complete.
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Done chan *Call
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// After completion, the error status. If this is non-nil, it may be an
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// error message from the peer (with Error as its type) or some other error.
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Err error
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// Holds the response once the call is done.
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Body []interface{}
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// ResponseSequence stores the sequence number of the DBus message containing
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// the call response (or error). This can be compared to the sequence number
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// of other call responses and signals on this connection to determine their
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// relative ordering on the underlying DBus connection.
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// For errors, ResponseSequence is populated only if the error came from a
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// DBusMessage that was received or if there was an error receiving. In case of
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// failure to make the call, ResponseSequence will be NoSequence.
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ResponseSequence Sequence
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// tracks context and canceler
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ctx context.Context
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ctxCanceler context.CancelFunc
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}
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func (c *Call) Context() context.Context {
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if c.ctx == nil {
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return context.Background()
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}
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return c.ctx
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}
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func (c *Call) ContextCancel() {
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if c.ctxCanceler != nil {
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c.ctxCanceler()
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}
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}
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// Store stores the body of the reply into the provided pointers. It returns
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// an error if the signatures of the body and retvalues don't match, or if
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// the error status is not nil.
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func (c *Call) Store(retvalues ...interface{}) error {
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if c.Err != nil {
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return c.Err
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}
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return Store(c.Body, retvalues...)
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}
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func (c *Call) done() {
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c.Done <- c
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c.ContextCancel()
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}
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