parallel_processor/buckets/
concurrent.rs

1use crate::buckets::bucket_writer::BucketItemSerializer;
2use crate::buckets::{LockFreeBucket, MultiThreadBuckets};
3use crate::memory_data_size::MemoryDataSize;
4use crate::utils::panic_on_drop::PanicOnDrop;
5use std::sync::Arc;
6
7use super::ChunkingStatus;
8
9pub struct BucketsThreadBuffer {
10    buffers: Vec<Vec<u8>>,
11}
12
13impl BucketsThreadBuffer {
14    pub const EMPTY: Self = Self { buffers: vec![] };
15
16    pub fn new(max_buffer_size: MemoryDataSize, buckets_count: usize) -> Self {
17        let mut buffers = Vec::with_capacity(buckets_count);
18        let capacity = max_buffer_size.as_bytes();
19        for _ in 0..buckets_count {
20            buffers.push(Vec::with_capacity(capacity));
21        }
22
23        Self { buffers }
24    }
25}
26
27pub struct BucketsThreadDispatcher<B: LockFreeBucket, S: BucketItemSerializer> {
28    mtb: Arc<MultiThreadBuckets<B>>,
29    thread_data: BucketsThreadBuffer,
30    drop_panic: PanicOnDrop,
31    serializers: Vec<S>,
32}
33
34impl<B: LockFreeBucket, S: BucketItemSerializer> BucketsThreadDispatcher<B, S> {
35    pub fn new(
36        mtb: &Arc<MultiThreadBuckets<B>>,
37        thread_data: BucketsThreadBuffer,
38        deserializer_init_data: S::InitData,
39    ) -> Self
40    where
41        S::InitData: Copy,
42    {
43        assert_eq!(mtb.active_buckets.len(), thread_data.buffers.len());
44        Self {
45            mtb: mtb.clone(),
46            thread_data,
47            drop_panic: PanicOnDrop::new("buckets thread dispatcher not finalized"),
48            serializers: (0..mtb.active_buckets.len())
49                .map(|_| S::new(deserializer_init_data))
50                .collect(),
51        }
52    }
53
54    #[inline]
55    pub fn add_element_extended(
56        &mut self,
57        bucket: u16,
58        extra_data: &S::ExtraData,
59        extra_data_buffer: &S::ExtraDataBuffer,
60        element: &S::InputElementType<'_>,
61    ) -> ChunkingStatus {
62        let bucket_buf = &mut self.thread_data.buffers[bucket as usize];
63        let mut chunking_status = ChunkingStatus::SameChunk;
64        if self.serializers[bucket as usize].get_size(element, extra_data) + bucket_buf.len()
65            > bucket_buf.capacity()
66            && bucket_buf.len() > 0
67        {
68            chunking_status = self.mtb.add_data(bucket, bucket_buf.as_slice());
69            bucket_buf.clear();
70            self.serializers[bucket as usize].reset();
71        }
72        self.serializers[bucket as usize].write_to(
73            element,
74            bucket_buf,
75            extra_data,
76            extra_data_buffer,
77        );
78        chunking_status
79    }
80
81    #[inline]
82    pub fn add_element(
83        &mut self,
84        bucket: u16,
85        extra_data: &S::ExtraData,
86        element: &S::InputElementType<'_>,
87    ) where
88        S: BucketItemSerializer<ExtraDataBuffer = ()>,
89    {
90        self.add_element_extended(bucket, extra_data, &(), element);
91    }
92
93    pub fn finalize(mut self) -> (BucketsThreadBuffer, Arc<MultiThreadBuckets<B>>) {
94        for (index, vec) in self.thread_data.buffers.iter_mut().enumerate() {
95            if vec.len() == 0 {
96                continue;
97            }
98            self.mtb.add_data(index as u16, vec.as_slice());
99            vec.clear();
100        }
101        self.drop_panic.disengage();
102        (self.thread_data, self.mtb)
103    }
104}
parallel_processor/buckets/concurrent.rs

parallel_processor/buckets/
concurrent.rs
