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allow env speicified buffer size

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Darien Raymond 2016-08-25 11:21:32 +02:00
parent fcad4aa212
commit 59125f665b
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GPG Key ID: 7251FFA14BB18169
1 changed files with 31 additions and 7 deletions
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38
common/alloc/buffer_pool.go
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@ -1,6 +1,8 @@
package alloc package alloc
import ( import (
"os"
"strconv"
"sync" "sync"
) )
@ -14,14 +16,14 @@ type BufferPool struct {
allocator *sync.Pool allocator *sync.Pool
} }
func NewBufferPool(bufferSize, poolSize int) *BufferPool { func NewBufferPool(bufferSize, poolSize uint32) *BufferPool {
pool := &BufferPool{ pool := &BufferPool{
chain: make(chan []byte, poolSize), chain: make(chan []byte, poolSize),
allocator: &sync.Pool{ allocator: &sync.Pool{
New: func() interface{} { return make([]byte, bufferSize) }, New: func() interface{} { return make([]byte, bufferSize) },
}, },
} }
for i := 0; i < poolSize; i++ { for i := uint32(0); i < poolSize; i++ {
pool.chain <- make([]byte, bufferSize) pool.chain <- make([]byte, bufferSize)
} }
return pool return pool
@ -51,10 +53,32 @@ func (p *BufferPool) Free(buffer *Buffer) {
const ( const (
SmallBufferSize = 1600 - defaultOffset SmallBufferSize = 1600 - defaultOffset
BufferSize = 8*1024 - defaultOffset
LargeBufferSize = 64*1024 - defaultOffset mediumBufferByteSize = 8 * 1024
BufferSize = mediumBufferByteSize - defaultOffset
largeBufferByteSize = 64 * 1024
LargeBufferSize = largeBufferByteSize - defaultOffset
PoolSizeEnvKey = "v2ray.buffer.size"
) )
var smallPool = NewBufferPool(1600, 256) var (
var mediumPool = NewBufferPool(8*1024, 1024) smallPool = NewBufferPool(1600, 256)
var largePool = NewBufferPool(64*1024, 32) mediumPool *BufferPool
largePool *BufferPool
)
func init() {
var size uint32 = 20
sizeStr := os.Getenv(PoolSizeEnvKey)
if len(sizeStr) > 0 {
customSize, err := strconv.ParseUint(sizeStr, 10, 32)
if err == nil {
size = uint32(customSize)
}
}
totalByteSize := size * 1024 * 1024
mediumPool = NewBufferPool(mediumBufferByteSize, totalByteSize/4*3/mediumBufferByteSize)
largePool = NewBufferPool(largeBufferByteSize, totalByteSize/4/largeBufferByteSize)
}