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TaskWorkItem

Struct TaskWorkItem 

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#[repr(C)]
pub struct TaskWorkItem {
Show 16 fields pub state: u32, pub op_handle: u32, pub tenant_id: u32, pub priority: u32, pub input_handle: u32, pub output_handle: u32, pub param: u32, pub continuation_pc: u32, pub continuation_data: u32, pub resume_epoch: u32, pub task_id: u32, pub parent_task_id: u32, pub age_ticks: u32, pub requeue_count: u32, pub yield_count: u32, pub flags: u32,
}
Expand description

One device-visible continuation task slot.

The first four words match the persistent ring header: status, opcode, tenant, priority. The remaining twelve words are the slot payload. Words 4..6 preserve the legacy MegakernelWorkItem payload; words 7..15 carry continuation and scheduler state.

Fields§

§state: u32

Raw TaskState word.

§op_handle: u32

Stable op id index into the dialect registry.

§tenant_id: u32

Tenant id checked by the runtime scheduler.

§priority: u32

Raw TaskPriority word.

§input_handle: u32

Input-buffer handle.

§output_handle: u32

Output-buffer handle.

§param: u32

Per-item parameter word.

§continuation_pc: u32

Program counter or block id where the worker should resume.

§continuation_data: u32

Opaque continuation-local scratch word.

§resume_epoch: u32

Device-visible epoch at which the task may resume.

§task_id: u32

Stable task id used to join yielded/requeued continuations.

§parent_task_id: u32

Parent task id for split or fan-out work; zero when absent.

§age_ticks: u32

Scheduler age ticks accumulated while waiting.

§requeue_count: u32

Number of times this task has been requeued.

§yield_count: u32

Number of times this task has yielded.

§flags: u32

Bitset of TASK_FLAG_* continuation flags.

Implementations§

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impl TaskWorkItem

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pub const fn from_work_item( task_id: u32, tenant_id: u32, priority: TaskPriority, item: MegakernelWorkItem, ) -> Self

Construct a ready continuation task from the compact legacy work item.

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pub const fn work_item(&self) -> MegakernelWorkItem

Return the compact legacy work item payload carried by this task.

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pub const fn task_state(&self) -> Option<TaskState>

Decode the task state word.

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pub const fn task_priority(&self) -> Option<TaskPriority>

Decode the task priority word.

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pub const fn is_schedulable(&self) -> bool

Return true when the task is eligible to be claimed by a worker.

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pub const fn paused( self, continuation_pc: u32, continuation_data: u32, resume_epoch: u32, ) -> Self

Encode a pause at continuation_pc until resume_epoch.

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pub const fn resumed(self) -> Self

Mark a paused task ready for GPU-side resume.

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pub const fn yielded(self, continuation_pc: u32, continuation_data: u32) -> Self

Yield this task back to the scheduler at continuation_pc.

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pub const fn requeued( self, continuation_pc: u32, continuation_data: u32, priority: TaskPriority, ) -> Self

Requeue this task, optionally changing its priority partition.

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pub const fn completed(self) -> Self

Mark this task completed.

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pub const fn faulted(self, fault_code: u32) -> Self

Mark this task faulted with a compact fault code.

Trait Implementations§

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impl Clone for TaskWorkItem

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fn clone(&self) -> TaskWorkItem

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TaskWorkItem

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for TaskWorkItem

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fn eq(&self, other: &TaskWorkItem) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Zeroable for TaskWorkItem

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fn zeroed() -> Self

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impl Copy for TaskWorkItem

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impl Eq for TaskWorkItem

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impl Pod for TaskWorkItem

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impl StructuralPartialEq for TaskWorkItem

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type Bits = T

Self must have the same layout as the specified Bits except for the possible invalid bit patterns being checked during is_valid_bit_pattern.
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If this function returns true, then it must be valid to reinterpret bits as &Self.
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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