forked from influxdata/influxdb
/
pools.go
147 lines (131 loc) · 2.64 KB
/
pools.go
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package tsm1
import "sync"
var (
bufPool sync.Pool
float64ValuePool sync.Pool
int64ValuePool sync.Pool
boolValuePool sync.Pool
stringValuePool sync.Pool
)
// getBuf returns a buffer with length size from the buffer pool.
func getBuf(size int) []byte {
x := bufPool.Get()
if x == nil {
return make([]byte, size)
}
buf := x.([]byte)
if cap(buf) < size {
return make([]byte, size)
}
return buf[:size]
}
// putBuf returns a buffer to the pool.
func putBuf(buf []byte) {
bufPool.Put(buf)
}
// getBuf returns a buffer with length size from the buffer pool.
func getFloat64Values(size int) []Value {
var buf []Value
x := float64ValuePool.Get()
if x == nil {
buf = make([]Value, size)
} else {
buf = x.([]Value)
}
if cap(buf) < size {
return make([]Value, size)
}
for i, v := range buf {
if v == nil {
buf[i] = &FloatValue{}
}
}
return buf[:size]
}
// putBuf returns a buffer to the pool.
func putFloat64Values(buf []Value) {
float64ValuePool.Put(buf)
}
// getBuf returns a buffer with length size from the buffer pool.
func getInt64Values(size int) []Value {
var buf []Value
x := int64ValuePool.Get()
if x == nil {
buf = make([]Value, size)
} else {
buf = x.([]Value)
}
if cap(buf) < size {
return make([]Value, size)
}
for i, v := range buf {
if v == nil {
buf[i] = &Int64Value{}
}
}
return buf[:size]
}
// putBuf returns a buffer to the pool.
func putInt64Values(buf []Value) {
int64ValuePool.Put(buf)
}
// getBuf returns a buffer with length size from the buffer pool.
func getBoolValues(size int) []Value {
var buf []Value
x := boolValuePool.Get()
if x == nil {
buf = make([]Value, size)
} else {
buf = x.([]Value)
}
if cap(buf) < size {
return make([]Value, size)
}
for i, v := range buf {
if v == nil {
buf[i] = &BoolValue{}
}
}
return buf[:size]
}
// putBuf returns a buffer to the pool.
func putStringValues(buf []Value) {
stringValuePool.Put(buf)
}
// getBuf returns a buffer with length size from the buffer pool.
func getStringValues(size int) []Value {
var buf []Value
x := stringValuePool.Get()
if x == nil {
buf = make([]Value, size)
} else {
buf = x.([]Value)
}
if cap(buf) < size {
return make([]Value, size)
}
for i, v := range buf {
if v == nil {
buf[i] = &StringValue{}
}
}
return buf[:size]
}
// putBuf returns a buffer to the pool.
func putBoolValues(buf []Value) {
boolValuePool.Put(buf)
}
func putValue(buf []Value) {
if len(buf) > 0 {
switch buf[0].(type) {
case *FloatValue:
putFloat64Values(buf)
case *Int64Value:
putInt64Values(buf)
case *BoolValue:
putBoolValues(buf)
case *StringValue:
putBoolValues(buf)
}
}
}