8000 Update sync_pool.go by zonesowhat · Pull Request #4 · funny/slab · GitHub
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Update sync_pool.go #4

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Update sync_pool.go #4

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9 changes: 6 additions & 3 deletions sync_pool.go
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Original file line number Diff line number Diff line change
Expand Up @@ -39,16 +39,19 @@ func NewSyncPool(minSize, maxSize, factor int) *SyncPool {
}

// Alloc try alloc a []byte from internal slab class if no free chunk in slab class Alloc will make one.
func (pool *SyncPool) Alloc(size int) []byte {
// 1st returned value indicate a slice caller can use
// 2nd returned value indicate the capacity of the slice
// 3rd returned value indicate whether the slice is allocated from this pool or not
func (pool *SyncPool) Alloc(size int) ([]byte, int, bool) {
if size <= pool.maxSize {
for i := 0; i < len(pool.classesSize); i++ {
if pool.classesSize[i] >= size {
mem := pool.classes[i].Get().(*[]byte)
return (*mem)[:size]
return (*mem)[:size], pool.classesSize[i], true
}
}
}
return make([]byte, size)
return make([]byte, size), size, false
}

// Free release a []byte that alloc from Pool.Alloc.
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