e8f52c35ce
By replacing grpc with ttrpc, we can reduce total memory runtime requirements and binary size. With minimal code changes, the shim can now be controlled by the much lightweight protocol, reducing the total memory required per container. When reviewing this change, take particular notice of the generated shim code. Signed-off-by: Stephen J Day <stephen.day@docker.com>
31 lines
794 B
Go
31 lines
794 B
Go
package main
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import (
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"os"
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"os/signal"
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"github.com/containerd/containerd/reaper"
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"github.com/containerd/containerd/sys"
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runc "github.com/containerd/go-runc"
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"github.com/stevvooe/ttrpc"
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)
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// setupSignals creates a new signal handler for all signals and sets the shim as a
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// sub-reaper so that the container processes are reparented
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func setupSignals() (chan os.Signal, error) {
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signals := make(chan os.Signal, 2048)
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signal.Notify(signals)
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// make sure runc is setup to use the monitor
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// for waiting on processes
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runc.Monitor = reaper.Default
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// set the shim as the subreaper for all orphaned processes created by the container
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if err := sys.SetSubreaper(1); err != nil {
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return nil, err
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}
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return signals, nil
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}
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func newServer() *ttrpc.Server {
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return ttrpc.NewServer()
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}
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