Function seek_buffer

crates/core/src/database_logger.rs:556–559

Allocate a buffer to use with [seek_to]. We assume a log line is typically around 150 bytes long, and allocate space to fit `num_lines` in one read. The max size of the buffer is 64KiB.

(num_lines: u32)

/// We assume a log line is typically around 150 bytes long, and allocate space
/// to fit `num_lines` in one read. The max size of the buffer is 64KiB.
fn seek_buffer(num_lines: u32) -> Vec<u8> {
    let chunk_size = std::cmp::min((num_lines as u64 * 150).next_power_of_two(), 0x10_000);
    vec![0; chunk_size as usize]
}

/// Set `file`'s position such that reading to the end will yield `num_lines`.
///