Module task 

Timer, thread, and async task management. Timer and thread management for asynchronous operations.

This module provides:

• TimerId / ThreadId: Unique identifiers for timers and background threads
• Instant / Duration: Cross-platform time types (works on no_std with tick counters)
• ThreadReceiver: Channel for receiving messages from the main thread
• Callback types for thread communication and system time queries

Structs

CheckThreadFinishedCallback

Wrapper for thread completion check callback.

GetSystemTimeCallback

InstantPtr

FFI-safe wrapper around std::time::Instant with custom clone/drop callbacks.

InstantPtrCloneCallback

InstantPtrDestructorCallback

LibrarySendThreadMsgCallback

Wrapper for thread message send callback.

SystemTick

Tick-based timestamp for systems without a real-time clock.

SystemTickDiff

Represents a difference in ticks for systems that don’t support timing

SystemTimeDiff

Duration represented as seconds + nanoseconds (mirrors std::time::Duration).

ThreadId

ID for uniquely identifying a background thread

ThreadIdVec

ThreadIdVecSlice

C-compatible slice type for $struct_name. This is a non-owning view into a Vec’s data.

ThreadReceiver

Channel endpoint for receiving messages from the main thread in a background thread.

ThreadReceiverDestructorCallback

Wrapper for thread receiver destructor callback.

ThreadReceiverInner

Inner receiver state containing the actual channel and callbacks.

ThreadRecvCallback

Wrapper for thread message receive callback.

TimerId

ID for uniquely identifying a timer

TimerIdVec

TimerIdVecSlice

C-compatible slice type for $struct_name. This is a non-owning view into a Vec’s data.

Enums

Duration

A span of time, either from the system clock or as tick difference.

Instant

A point in time, either from the system clock or a tick counter.

OptionDuration

OptionInstant

OptionThreadId

OptionThreadSendMsg

OptionTimerId

TerminateTimer

Should a timer terminate or not - used to remove active timers

ThreadIdVecDestructor

ThreadSendMsg

Message that can be sent from the main thread to the Thread using the ThreadId.

TimerIdVecDestructor

Constants

CAPABILITY_PUMP_TIMER_ID

Timer ID for the single-threaded capability pump (MWA-A1).

CURSOR_BLINK_TIMER_ID

Timer ID for cursor blinking in contenteditable elements (~530ms interval)

DRAG_AUTOSCROLL_TIMER_ID

Timer ID for auto-scroll during drag operations near edges

LONG_PRESS_TIMER_ID

Timer ID for the one-shot long-press wake-up (MWA-B12).

SCROLL_MOMENTUM_TIMER_ID

Timer ID for scroll momentum/inertia animation

TOOLTIP_DELAY_TIMER_ID

Timer ID for tooltip show delay.

USER_TIMER_ID_START

First available ID for user-defined timers

Statics

TEST_CLOCK_OFFSET_MS

Injectable test-clock offset, in milliseconds, added to every Instant::now().

Functions

advance_test_clock_ms

Advance the injectable test clock by ms (E2E tick_ms).

get_system_time_libstd

Default implementation that gets the current system time.

test_clock_offset_ms

The current test-clock offset in ms (0 unless tick_ms was used).

Type Aliases

CheckThreadFinishedCallbackType

Callback to check if a thread has finished execution.

GetSystemTimeCallbackType

Get the current system type, equivalent to std::time::Instant::now(), except it also works on systems that don’t have a clock (such as embedded timers)

InstantPtrCloneCallbackType

InstantPtrDestructorCallbackType

LibrarySendThreadMsgCallbackType

Callback to send a message to a background thread.

ThreadIdVecDestructorType

ThreadReceiverDestructorCallbackType

Callback to destroy a ThreadReceiver.

ThreadRecvCallbackType

Callback for a running thread to receive messages from the main thread.

TimerIdVecDestructorType