API
#contextBackground / WithCancel / WithTimeout; Done is a chan. No WithValue.
struct Contextpub struct Context {
pub done chan int
pub deadline_ns int
pub keys []string
pub vals []string
}Public struct `Context`.
done chan intdeadline_ns intkeys []stringvals []stringstruct Cancelpub struct Cancel {
pub ctx Context
}Public struct `Cancel`.
ctx Contextbackgroundpub fn background() Contextbackground; returns Context.
none
Context — a value of this type
with_cancelpub fn with_cancel() CancelDerive a new value with cancel.
none
Cancel — a value of this type
(&mut Cancel) cancelpub fn (c &mut Cancel) cancel()Call `cancel` on `&mut Cancel`.
c &mut Cancelwith_cancel_parentpub fn with_cancel_parent(parent &Context) Cancelwith_cancel_parent is the parent-aware form of with_cancel. The returned context shares the parent's deadline and is canceled when the parent's Done channel closes. Parent and child Cancel values can still be canceled explicitly; close_once makes all three paths idempotent.
parent &ContextCancel — a value of this type
with_timeoutpub fn with_timeout(timeout_ns int) CancelDerive a new value with timeout.
timeout_ns intCancel — a value of this type
with_deadlinepub fn with_deadline(deadline_ns int) CancelDerive a new value with deadline.
deadline_ns intCancel — a value of this type
(Context) deadlinepub fn (c Context) deadline() intCall `deadline` on `Context`.
c Contextint — a value of this type
errpub fn err(c &Context) interr; returns int. Throws on failure.
c &Contextint — a value of this type
with_valuepub fn with_value(parent &Context, key string, val string) Contextwith_value attaches a string key/value ( WithValue; v1 keys and values are strings, not any). Later with_value of the same key shadows earlier ones.
parent &Contextkey stringval stringContext — a value of this type
valuepub fn value(c &Context, key string) stringvalue; returns string. Throws on failure.
c &Contextkey stringstring — result string
without_cancelpub fn without_cancel(parent &Context) Contextwithout_cancel is WithoutCancel: values are copied, deadline and cancellation are not. The new Done channel never closes.
parent &ContextContext — a value of this type