mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2025-06-05 21:59:39 +02:00
[chore] Update a bunch of database dependencies (#1772)
* [chore] Update a bunch of database dependencies * fix lil thing
This commit is contained in:
70
vendor/github.com/jackc/pgx/v5/internal/iobufpool/iobufpool.go
generated
vendored
Normal file
70
vendor/github.com/jackc/pgx/v5/internal/iobufpool/iobufpool.go
generated
vendored
Normal file
@ -0,0 +1,70 @@
|
||||
// Package iobufpool implements a global segregated-fit pool of buffers for IO.
|
||||
//
|
||||
// It uses *[]byte instead of []byte to avoid the sync.Pool allocation with Put. Unfortunately, using a pointer to avoid
|
||||
// an allocation is purposely not documented. https://github.com/golang/go/issues/16323
|
||||
package iobufpool
|
||||
|
||||
import "sync"
|
||||
|
||||
const minPoolExpOf2 = 8
|
||||
|
||||
var pools [18]*sync.Pool
|
||||
|
||||
func init() {
|
||||
for i := range pools {
|
||||
bufLen := 1 << (minPoolExpOf2 + i)
|
||||
pools[i] = &sync.Pool{
|
||||
New: func() any {
|
||||
buf := make([]byte, bufLen)
|
||||
return &buf
|
||||
},
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Get gets a []byte of len size with cap <= size*2.
|
||||
func Get(size int) *[]byte {
|
||||
i := getPoolIdx(size)
|
||||
if i >= len(pools) {
|
||||
buf := make([]byte, size)
|
||||
return &buf
|
||||
}
|
||||
|
||||
ptrBuf := (pools[i].Get().(*[]byte))
|
||||
*ptrBuf = (*ptrBuf)[:size]
|
||||
|
||||
return ptrBuf
|
||||
}
|
||||
|
||||
func getPoolIdx(size int) int {
|
||||
size--
|
||||
size >>= minPoolExpOf2
|
||||
i := 0
|
||||
for size > 0 {
|
||||
size >>= 1
|
||||
i++
|
||||
}
|
||||
|
||||
return i
|
||||
}
|
||||
|
||||
// Put returns buf to the pool.
|
||||
func Put(buf *[]byte) {
|
||||
i := putPoolIdx(cap(*buf))
|
||||
if i < 0 {
|
||||
return
|
||||
}
|
||||
|
||||
pools[i].Put(buf)
|
||||
}
|
||||
|
||||
func putPoolIdx(size int) int {
|
||||
minPoolSize := 1 << minPoolExpOf2
|
||||
for i := range pools {
|
||||
if size == minPoolSize<<i {
|
||||
return i
|
||||
}
|
||||
}
|
||||
|
||||
return -1
|
||||
}
|
Reference in New Issue
Block a user