Function WithFastValuesPrealloc

pkg/util/ctxutil/fast_value.go:74–83

WithFastValuesPrealloc is like WithFastValues, but preallocates multiple contexts that can later be reused on subsequent WithFastValue(s) calls to save on allocations.

(parent context.Context)

// contexts that can later be reused on subsequent WithFastValue(s) calls to
// save on allocations.
func WithFastValuesPrealloc(parent context.Context) FastValuesBuilder {
	ancestor, parent := findFastValuesCtxAncestor(parent)
	container := &fastValuesContainer{}
	container.used.Store(1)
	ctx := &container.buf[0]
	ctx.init(parent, container, ancestor)
	return FastValuesBuilder{
		ctx: ctx,
	}
}

// FastValuesBuilder contains multiple values; used for WithFastValues.
type FastValuesBuilder struct {