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Code Issues Releases Wiki Activity

Introduce the new PushOptimizedBitmap

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This commit is contained in:
Clément Renault 2024-09-23 16:38:21 +02:00
parent 835c5f98f9
commit 42b093687d
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GPG Key ID: F250A4C4E3AE5F5F
1 changed files with 48 additions and 18 deletions
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66
milli/src/update/new/extract/cache.rs
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@ -32,7 +32,7 @@ impl<MF: MergeFunction> CboCachedSorter<MF> {
pub fn insert_del_u32(&mut self, key: &[u8], n: u32) -> grenad::Result<(), MF::Error> { pub fn insert_del_u32(&mut self, key: &[u8], n: u32) -> grenad::Result<(), MF::Error> {
match self.cache.get_mut(key) { match self.cache.get_mut(key) {
Some(DelAddRoaringBitmap { del, add: _ }) => { Some(DelAddRoaringBitmap { del, add: _ }) => {
del.get_or_insert_with(RoaringBitmap::new).insert(n); del.get_or_insert_with(PushOptimizedBitmap::default).insert(n);
} }
None => { None => {
let value = DelAddRoaringBitmap::new_del_u32(n); let value = DelAddRoaringBitmap::new_del_u32(n);
@ -52,7 +52,7 @@ impl<MF: MergeFunction> CboCachedSorter<MF> {
) -> grenad::Result<(), MF::Error> { ) -> grenad::Result<(), MF::Error> {
match self.cache.get_mut(key) { match self.cache.get_mut(key) {
Some(DelAddRoaringBitmap { del, add: _ }) => { Some(DelAddRoaringBitmap { del, add: _ }) => {
*del.get_or_insert_with(RoaringBitmap::new) |= bitmap; del.get_or_insert_with(PushOptimizedBitmap::default).union_with_bitmap(bitmap);
} }
None => { None => {
let value = DelAddRoaringBitmap::new_del(bitmap); let value = DelAddRoaringBitmap::new_del(bitmap);
@ -68,7 +68,7 @@ impl<MF: MergeFunction> CboCachedSorter<MF> {
pub fn insert_add_u32(&mut self, key: &[u8], n: u32) -> grenad::Result<(), MF::Error> { pub fn insert_add_u32(&mut self, key: &[u8], n: u32) -> grenad::Result<(), MF::Error> {
match self.cache.get_mut(key) { match self.cache.get_mut(key) {
Some(DelAddRoaringBitmap { del: _, add }) => { Some(DelAddRoaringBitmap { del: _, add }) => {
add.get_or_insert_with(RoaringBitmap::new).insert(n); add.get_or_insert_with(PushOptimizedBitmap::default).insert(n);
} }
None => { None => {
let value = DelAddRoaringBitmap::new_add_u32(n); let value = DelAddRoaringBitmap::new_add_u32(n);
@ -88,7 +88,7 @@ impl<MF: MergeFunction> CboCachedSorter<MF> {
) -> grenad::Result<(), MF::Error> { ) -> grenad::Result<(), MF::Error> {
match self.cache.get_mut(key) { match self.cache.get_mut(key) {
Some(DelAddRoaringBitmap { del: _, add }) => { Some(DelAddRoaringBitmap { del: _, add }) => {
*add.get_or_insert_with(RoaringBitmap::new) |= bitmap; add.get_or_insert_with(PushOptimizedBitmap::default).union_with_bitmap(bitmap);
} }
None => { None => {
let value = DelAddRoaringBitmap::new_add(bitmap); let value = DelAddRoaringBitmap::new_add(bitmap);
@ -104,8 +104,8 @@ impl<MF: MergeFunction> CboCachedSorter<MF> {
pub fn insert_del_add_u32(&mut self, key: &[u8], n: u32) -> grenad::Result<(), MF::Error> { pub fn insert_del_add_u32(&mut self, key: &[u8], n: u32) -> grenad::Result<(), MF::Error> {
match self.cache.get_mut(key) { match self.cache.get_mut(key) {
Some(DelAddRoaringBitmap { del, add }) => { Some(DelAddRoaringBitmap { del, add }) => {
del.get_or_insert_with(RoaringBitmap::new).insert(n); del.get_or_insert_with(PushOptimizedBitmap::default).insert(n);
add.get_or_insert_with(RoaringBitmap::new).insert(n); add.get_or_insert_with(PushOptimizedBitmap::default).insert(n);
} }
None => { None => {
let value = DelAddRoaringBitmap::new_del_add_u32(n); let value = DelAddRoaringBitmap::new_del_add_u32(n);
@ -129,21 +129,21 @@ impl<MF: MergeFunction> CboCachedSorter<MF> {
match deladd { match deladd {
DelAddRoaringBitmap { del: Some(del), add: None } => { DelAddRoaringBitmap { del: Some(del), add: None } => {
self.cbo_buffer.clear(); self.cbo_buffer.clear();
CboRoaringBitmapCodec::serialize_into(&del, &mut self.cbo_buffer); CboRoaringBitmapCodec::serialize_into(&del.bitmap, &mut self.cbo_buffer);
value_writer.insert(DelAdd::Deletion, &self.cbo_buffer)?; value_writer.insert(DelAdd::Deletion, &self.cbo_buffer)?;
} }
DelAddRoaringBitmap { del: None, add: Some(add) } => { DelAddRoaringBitmap { del: None, add: Some(add) } => {
self.cbo_buffer.clear(); self.cbo_buffer.clear();
CboRoaringBitmapCodec::serialize_into(&add, &mut self.cbo_buffer); CboRoaringBitmapCodec::serialize_into(&add.bitmap, &mut self.cbo_buffer);
value_writer.insert(DelAdd::Addition, &self.cbo_buffer)?; value_writer.insert(DelAdd::Addition, &self.cbo_buffer)?;
} }
DelAddRoaringBitmap { del: Some(del), add: Some(add) } => { DelAddRoaringBitmap { del: Some(del), add: Some(add) } => {
self.cbo_buffer.clear(); self.cbo_buffer.clear();
CboRoaringBitmapCodec::serialize_into(&del, &mut self.cbo_buffer); CboRoaringBitmapCodec::serialize_into(&del.bitmap, &mut self.cbo_buffer);
value_writer.insert(DelAdd::Deletion, &self.cbo_buffer)?; value_writer.insert(DelAdd::Deletion, &self.cbo_buffer)?;
self.cbo_buffer.clear(); self.cbo_buffer.clear();
CboRoaringBitmapCodec::serialize_into(&add, &mut self.cbo_buffer); CboRoaringBitmapCodec::serialize_into(&add.bitmap, &mut self.cbo_buffer);
value_writer.insert(DelAdd::Addition, &self.cbo_buffer)?; value_writer.insert(DelAdd::Addition, &self.cbo_buffer)?;
} }
DelAddRoaringBitmap { del: None, add: None } => return Ok(()), DelAddRoaringBitmap { del: None, add: None } => return Ok(()),
@ -167,31 +167,61 @@ impl<MF: MergeFunction> CboCachedSorter<MF> {
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
pub struct DelAddRoaringBitmap { pub struct DelAddRoaringBitmap {
pub del: Option<RoaringBitmap>, pub del: Option<PushOptimizedBitmap>,
pub add: Option<RoaringBitmap>, pub add: Option<PushOptimizedBitmap>,
} }
impl DelAddRoaringBitmap { impl DelAddRoaringBitmap {
fn new_del_add_u32(n: u32) -> Self { fn new_del_add_u32(n: u32) -> Self {
DelAddRoaringBitmap { DelAddRoaringBitmap {
del: Some(RoaringBitmap::from([n])), del: Some(PushOptimizedBitmap::from_single(n)),
add: Some(RoaringBitmap::from([n])), add: Some(PushOptimizedBitmap::from_single(n)),
} }
} }
fn new_del(bitmap: RoaringBitmap) -> Self { fn new_del(bitmap: RoaringBitmap) -> Self {
DelAddRoaringBitmap { del: Some(bitmap), add: None } DelAddRoaringBitmap { del: Some(PushOptimizedBitmap::from_bitmap(bitmap)), add: None }
} }
fn new_del_u32(n: u32) -> Self { fn new_del_u32(n: u32) -> Self {
DelAddRoaringBitmap { del: Some(RoaringBitmap::from([n])), add: None } DelAddRoaringBitmap { del: Some(PushOptimizedBitmap::from_single(n)), add: None }
} }
fn new_add(bitmap: RoaringBitmap) -> Self { fn new_add(bitmap: RoaringBitmap) -> Self {
DelAddRoaringBitmap { del: None, add: Some(bitmap) } DelAddRoaringBitmap { del: None, add: Some(PushOptimizedBitmap::from_bitmap(bitmap)) }
} }
fn new_add_u32(n: u32) -> Self { fn new_add_u32(n: u32) -> Self {
DelAddRoaringBitmap { del: None, add: Some(RoaringBitmap::from([n])) } DelAddRoaringBitmap { del: None, add: Some(PushOptimizedBitmap::from_single(n)) }
}
}
#[derive(Debug, Clone, Default)]
struct PushOptimizedBitmap {
max: Option<u32>,
bitmap: RoaringBitmap,
}
impl PushOptimizedBitmap {
fn from_bitmap(bitmap: RoaringBitmap) -> PushOptimizedBitmap {
PushOptimizedBitmap { max: bitmap.max(), bitmap }
}
fn from_single(single: u32) -> PushOptimizedBitmap {
PushOptimizedBitmap { max: Some(single), bitmap: RoaringBitmap::from([single]) }
}
fn insert(&mut self, n: u32) {
if self.max.map_or(true, |max| n > max) {
self.max = Some(n);
self.bitmap.push(n);
} else {
self.bitmap.insert(n);
}
}
fn union_with_bitmap(&mut self, bitmap: RoaringBitmap) {
self.bitmap |= bitmap;
self.max = self.bitmap.max();
} }
} }