Struct MemoryDecision 

pub struct MemoryDecision {
    pub label: String,
    pub fixed_bytes: u64,
    pub bytes_per_event: u64,
    pub chunk_events: usize,
    pub estimated_peak_bytes: u64,
    pub actual_high_water_bytes: Option<u64>,
    pub strategy: String,
}

One memory-derived execution decision.

Fields

label: String

Operation or dataset label.

fixed_bytes: u64

Fixed bytes required regardless of event count.

bytes_per_event: u64

Estimated incremental bytes per event.

chunk_events: usize

Chosen internal event count.

estimated_peak_bytes: u64

Estimated peak tracked bytes.

actual_high_water_bytes: Option<u64>

Actual tracked high-water bytes when known.

strategy: String

Selected storage/execution strategy.

Implementations

impl MemoryDecision

pub fn fit( label: impl Into<String>, fixed_bytes: u64, bytes_per_event: u64, available_bytes: u64, event_limit: usize, strategy: impl Into<String>, ) -> Result<MemoryDecision, MemoryError>

Derives the largest nonzero event chunk fitting within available_bytes.

Errors

Returns MemoryError::BudgetExceeded when fixed cost plus one event cannot fit.

Trait Implementations

impl Clone for MemoryDecision

fn clone(&self) -> MemoryDecision

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MemoryDecision

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MemoryDecision

fn deserialize<__D>( __deserializer: __D, ) -> Result<MemoryDecision, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MemoryDecision

impl PartialEq for MemoryDecision

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for MemoryDecision

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MemoryDecision