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This commit is contained in:
Igor Katson 2021-06-27 10:10:59 +01:00
parent 0bd3f95891
commit 5c092389f9
4 changed files with 112 additions and 45 deletions
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40
crates/librqbit/src/chunk_tracker.rs
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@ -2,7 +2,7 @@ use log::{debug, info};
use crate::{
buffers::ByteString,
lengths::{Lengths, ValidPieceIndex},
lengths::{ChunkInfo, Lengths, ValidPieceIndex},
peer_comms::Piece,
type_aliases::BF,
};
@ -50,6 +50,12 @@ fn compute_chunk_status(lengths: &Lengths, needed_pieces: &BF) -> BF {
chunk_bf
}
pub enum ChunkMarkingResult {
PreviouslyCompleted,
NotCompleted,
Completed,
}
impl ChunkTracker {
pub fn new(needed_pieces: BF, have_pieces: BF, lengths: Lengths) -> Self {
Self {
@ -84,19 +90,33 @@ impl ChunkTracker {
self.have.set(idx.get() as usize, true)
}
// return true if the whole piece is marked downloaded
pub fn mark_chunk_downloaded(&mut self, piece: &Piece<ByteString>) -> Option<bool> {
let chunk_info = self.lengths.chunk_info_from_received_piece(piece)?;
self.chunk_status
.set(chunk_info.absolute_index as usize, true);
let chunk_range = self.lengths.chunk_range(chunk_info.piece_index);
let chunk_range = self.chunk_status.get(chunk_range).unwrap();
let all = chunk_range.all();
pub fn is_chunk_downloaded(&self, chunk: &ChunkInfo) -> bool {
*self
.chunk_status
.get(chunk.absolute_index as usize)
.unwrap()
}
// return true if the whole piece is marked downloaded
pub fn mark_chunk_downloaded(
&mut self,
piece: &Piece<ByteString>,
) -> Option<ChunkMarkingResult> {
let chunk_info = self.lengths.chunk_info_from_received_piece(piece)?;
let chunk_range = self.lengths.chunk_range(chunk_info.piece_index);
let chunk_range = self.chunk_status.get_mut(chunk_range).unwrap();
if chunk_range.all() {
return Some(ChunkMarkingResult::PreviouslyCompleted);
}
chunk_range.set(chunk_info.chunk_index as usize, true);
debug!(
"piece={}, chunk_info={:?}, bits={:?}",
piece.index, chunk_info, chunk_range,
);
Some(all)
if chunk_range.all() {
return Some(ChunkMarkingResult::Completed);
}
return Some(ChunkMarkingResult::NotCompleted);
}
}