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preallocate Batch's blocks buffer on commit.

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It's probably safe to assume that this buffer will be about the same time each
flush.

This could cause 1 extra allocation (if this is the last commit) but that's
unlikely to be an issue.

License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>
This commit is contained in:
Steven Allen
2017-10-11 11:43:30 -07:00
parent e41848c537
commit 9de031b432
1 changed files with 3 additions and 2 deletions
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5
merkledag/batch.go
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@ -43,7 +43,8 @@ func (t *Batch) processResults() {
}
func (t *Batch) asyncCommit() {
if len(t.blocks) == 0 || t.commitError != nil {
numBlocks := len(t.blocks)
if numBlocks == 0 || t.commitError != nil {
return
}
if t.activeCommits >= ParallelBatchCommits {
@ -61,7 +62,7 @@ func (t *Batch) asyncCommit() {
}(t.blocks)
t.activeCommits++
t.blocks = nil
t.blocks = make([]blocks.Block, 0, numBlocks)
t.size = 0
return