init

Create the deadline to expire after the given amount of time in nanoseconds passes. Pass in null to have the deadline call Futex.wait() and never expire.

Function parameters

Parameters

expires_in_ns:?u64

Deadline is used to wait efficiently for a pointer's value to change using Futex and a fixed timeout.

Types

Deadline: Deadline is used to wait efficiently for a pointer's value to change using Futex and a fixed timeout.

Checks if `ptr` still contains the value `expect` and, if so, blocks the caller until either:

Functions

wait: Checks if `ptr` still contains the value `expect` and, if so, blocks the caller until either:
timedWait: Checks if `ptr` still contains the value `expect` and, if so, blocks the caller until either:
wake: Unblocks at most `max_waiters` callers blocked in a `wait()` call on `ptr`.

Source

Implementation

pub fn init(expires_in_ns: ?u64) Deadline {
    var deadline: Deadline = undefined;
    deadline.timeout = expires_in_ns;

    // std.time.Timer is required to be supported for somewhat accurate reportings of error.Timeout.
    if (deadline.timeout != null) {
        deadline.started = std.time.Timer.start() catch unreachable;
    }

    return deadline;
}