Struct ParallelScanInit 

#[non_exhaustive]
pub struct ParallelScanInit { /* private fields */ }

The two outputs of StorageEngine::parallel_scan_init: the engine-owned scan context that every later parallel_scan* call receives back, and the number of worker threads the engine will drive.

The context pointer is round-tripped through MySQL verbatim; the binding never dereferences it and the engine owns its lifetime (freed in StorageEngine::parallel_scan_end).

Implementations

impl ParallelScanInit

pub fn new(scan_ctx: *mut c_void, num_threads: usize) -> Self

Build the outcome from the engine’s scan context and worker-thread count. A null scan_ctx with num_threads == 0 signals “no parallel scan”.

pub fn scan_ctx(&self) -> *mut c_void

Engine-owned scan-context pointer handed back to MySQL

pub fn num_threads(&self) -> usize

Number of worker threads the engine will drive for the scan

Trait Implementations

impl Debug for ParallelScanInit

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

Formats the value using the given formatter.