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remove snappy_buffer_size constant in favor of max_compressed_len

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This commit is contained in:
Robert Habermeier 2016-06-15 13:05:00 +02:00
parent 53b3a6f0a1
commit 9badb310ae
1 changed files with 2 additions and 6 deletions
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8
ethcore/src/snapshot/mod.rs
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@ -40,10 +40,6 @@ mod block;
// Try to have chunks be around 16MB (before compression) // Try to have chunks be around 16MB (before compression)
const PREFERRED_CHUNK_SIZE: usize = 16 * 1024 * 1024; const PREFERRED_CHUNK_SIZE: usize = 16 * 1024 * 1024;
// use initially 20MB for the reusable snappy buffers.
// should always be larger than PREFERRED_CHUNK_SIZE for fault tolerance.
const SNAPPY_BUFFER_SIZE: usize = 20 * 1024 * 1024;
// compresses the data into the buffer, resizing if necessary. // compresses the data into the buffer, resizing if necessary.
fn compression_helper(input: &[u8], output: &mut Vec<u8>) -> usize { fn compression_helper(input: &[u8], output: &mut Vec<u8>) -> usize {
let max_size = snappy::max_compressed_len(input.len()); let max_size = snappy::max_compressed_len(input.len());
@ -159,7 +155,7 @@ pub fn chunk_blocks(client: &BlockChainClient, best_block_hash: H256, genesis_ha
rlps: VecDeque::new(), rlps: VecDeque::new(),
current_hash: best_block_hash, current_hash: best_block_hash,
hashes: Vec::new(), hashes: Vec::new(),
snappy_buffer: vec![0; SNAPPY_BUFFER_SIZE], snappy_buffer: vec![0; snappy::max_compressed_len(PREFERRED_CHUNK_SIZE)],
}; };
try!(chunker.chunk_all(genesis_hash, path)); try!(chunker.chunk_all(genesis_hash, path));
@ -229,7 +225,7 @@ pub fn chunk_state(db: &HashDB, root: &H256, path: &Path) -> Result<Vec<H256>, E
rlps: Vec::new(), rlps: Vec::new(),
cur_size: 0, cur_size: 0,
snapshot_path: path, snapshot_path: path,
snappy_buffer: vec![0; SNAPPY_BUFFER_SIZE], snappy_buffer: vec![0; snappy::max_compressed_len(PREFERRED_CHUNK_SIZE)],
}; };
trace!(target: "snapshot", "beginning state chunking"); trace!(target: "snapshot", "beginning state chunking");