Function readLastAssumeLength [src]

Reads last length bytes written to the ring buffer into dest; Asserts that length not greater than ring buffer or dest length Uses memcpy and so dest must not overlap ring buffer data. Reduces write index by length.

Prototype

pub fn readLastAssumeLength(self: *RingBuffer, dest: []u8, length: usize) void

Parameters

self: *RingBufferdest: []u8length: usize

Source

  pub fn readLastAssumeLength(self: *RingBuffer, dest: []u8, length: usize) void {
    assert(length <= self.len() and length <= dest.len);
    const slice = self.sliceLast(length);
    slice.copyTo(dest);
    self.write_index = if (self.write_index >= self.data.len)
        self.write_index - length
    else
        self.mask(self.write_index + self.data.len - length);
}  