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wal_writer_thread_main

hypercall::journal::engine_journal_batcher

Function wal_writer_thread_main 

Source 
fn wal_writer_thread_main(
    wal_state: WalState,
    rx: Receiver<WalWriterMessage>,
    replication_tx: Sender<ReplicationMessage>,
    rsm_state: RsmWalWriterState,
)
Expand description

Dedicated WAL writer OS thread.

Owns WalState exclusively (no Arc/Mutex). Receives batches from the batcher task, writes to page cache, performs fsync (io_uring on Linux, sync_data elsewhere), fires durability acks, and enqueues records for async replication.