Filippo Valsorda c1b7112af8 os/signal: make NotifyContext cancel the context with a cause ... This is especially useful when combined with the nesting semantics of context.Cause, and with errgroup's use of CancelCauseFunc. For example, with the following code ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt) defer stop() serveGroup, ctx := errgroup.WithContext(ctx) calling context.Cause(ctx) after serveGroup.Wait() will return either "interrupt signal received" (if that happens first) or the error from serveGroup. Change-Id: Ie181f5f84269f6e39defdad2d5fd8ead6a6a6964 Reviewed-on: https://go-review.googlesource.com/c/go/+/721700 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Mark Freeman <markfreeman@google.com> Reviewed-by: Sean Liao <sean@liao.dev> Auto-Submit: Filippo Valsorda <filippo@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Commit-Queue: Junyang Shao <shaojunyang@google.com> Reviewed-by: Junyang Shao <shaojunyang@google.com>		2025-11-20 13:01:32 -08:00
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notifycontext.md	os/signal: make NotifyContext cancel the context with a cause	2025-11-20 13:01:32 -08:00