mirror of
https://github.com/luxfi/node.git
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zeekay
7cf87b230b
The module already called itself github.com/luxfi/node while containing no node in Go: cmd/luxd was twenty-one lines that printed the size of a few types, and the Go column of the matrix measured a VM plugin. A repo that fetches the thing it claims to be has not replaced it, so the Go sources move in — 1515 files, the daemon and everything under it — and the build reaches outside this module for nothing. Rust and C++ sit beside it unchanged and are still measured against it by the differential. That is the point of one repo: the reference implementation and the two ports are the same checkout, so parity is a thing you can run rather than a thing you assert. Verified: builds, and the closure carries no lux-private — checked at build time rather than believed. The daemon starts twelve chains on a local network (P X C Q Z A B G K M F, plus D through its plugin) and reports healthy.
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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//go:build linux
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// ^ SIGTERM signal is not available on Windows
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// ^ syscall.SysProcAttr only has field Pdeathsig on Linux
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package subprocess
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import (
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"context"
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"os/exec"
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"syscall"
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"github.com/luxfi/log"
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"github.com/luxfi/node/vms/rpcchainvm/runtime"
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"github.com/luxfi/util/wrappers"
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)
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func NewCmd(path string, args ...string) *exec.Cmd {
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cmd := exec.Command(path, args...)
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// NOTE: Pdeathsig removed — Go's M-thread recycling can prematurely
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// deliver SIGTERM to the child when the spawning OS thread is parked.
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// Subprocess lifecycle is managed explicitly via stopper.Stop().
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cmd.SysProcAttr = &syscall.SysProcAttr{}
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return cmd
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}
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func stop(ctx context.Context, log log.Logger, cmd *exec.Cmd) {
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waitChan := make(chan error)
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go func() {
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// attempt graceful shutdown
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errs := wrappers.Errs{}
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err := cmd.Process.Signal(syscall.SIGTERM)
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errs.Add(err)
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_, err = cmd.Process.Wait()
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errs.Add(err)
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waitChan <- errs.Err
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close(waitChan)
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}()
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ctx, cancel := context.WithTimeout(ctx, runtime.DefaultGracefulTimeout)
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defer cancel()
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select {
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case err := <-waitChan:
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if err == nil {
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log.Debug("subprocess gracefully shutdown")
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} else {
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log.Error("subprocess graceful shutdown failed", "error", err)
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}
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case <-ctx.Done():
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// force kill
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err := cmd.Process.Kill()
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log.Error("subprocess was killed", "error", err)
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}
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}
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