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Feat: mempool #13

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21 changes: 21 additions & 0 deletions utils/mempool.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
package utils

import (
"math/big"
"sync"
)

var intPool = &sync.Pool{
New: func() interface{} {
return new(big.Int)
},
}

func GetBigInt() *big.Int {
return intPool.Get().(*big.Int)
}

func PutBigInt(i *big.Int) {
i.SetInt64(0) // or you might want to reset to some default value
intPool.Put(i)
}
10 changes: 6 additions & 4 deletions utils/tick_math.go
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Original file line number Diff line number Diff line change
Expand Up @@ -25,8 +25,8 @@ var (
)

func mulShift(val *big.Int, mulBy *big.Int) *big.Int {

return new(big.Int).Rsh(new(big.Int).Mul(val, mulBy), 128)
return GetBigInt().Rsh(new(big.Int).Mul(val, mulBy), 128)
//return new(big.Int).Rsh(new(big.Int).Mul(val, mulBy), 128)
}

var (
Expand Down Expand Up @@ -66,10 +66,11 @@ func GetSqrtRatioAtTick(tick int) (*big.Int, error) {
absTick = -tick
}
var ratio *big.Int

if absTick&0x1 != 0 {
ratio = sqrtConst1
ratio = GetBigInt().Set(sqrtConst1)
} else {
ratio = sqrtConst2
ratio = GetBigInt().Set(sqrtConst2)
}
if (absTick & 0x2) != 0 {
ratio = mulShift(ratio, sqrtConst3)
Expand Down Expand Up @@ -132,6 +133,7 @@ func GetSqrtRatioAtTick(tick int) (*big.Int, error) {
ratio = new(big.Int).Div(entities.MaxUint256, ratio)
}

defer PutBigInt(ratio)
// back to Q96
if new(big.Int).Rem(ratio, Q32).Cmp(constants.Zero) > 0 {
return new(big.Int).Add((new(big.Int).Div(ratio, Q32)), constants.One), nil
Expand Down