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simplify content storage in packed packets

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It's not necessary to store both the packetBuffer and the slice
containing the raw data in the packet.
This commit is contained in:
Marten Seemann 2020-02-11 11:50:57 +07:00
parent 077504f557
commit d642bf9098
10 changed files with 112 additions and 103 deletions
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15
buffer_pool.go
View file

@ -7,9 +7,9 @@ import (
)
type packetBuffer struct {
Slice []byte
Data []byte
// refCount counts how many packets the Slice is used in.
// refCount counts how many packets Data is used in.
// It doesn't support concurrent use.
// It is > 1 when used for coalesced packet.
refCount int
@ -50,8 +50,13 @@ func (b *packetBuffer) Release() {
b.putBack()
}
// Len returns the length of Data
func (b *packetBuffer) Len() protocol.ByteCount {
return protocol.ByteCount(len(b.Data))
}
func (b *packetBuffer) putBack() {
if cap(b.Slice) != int(protocol.MaxReceivePacketSize) {
if cap(b.Data) != int(protocol.MaxReceivePacketSize) {
panic("putPacketBuffer called with packet of wrong size!")
}
bufferPool.Put(b)
@ -62,14 +67,14 @@ var bufferPool sync.Pool
func getPacketBuffer() *packetBuffer {
buf := bufferPool.Get().(*packetBuffer)
buf.refCount = 1
buf.Slice = buf.Slice[:protocol.MaxReceivePacketSize]
buf.Data = buf.Data[:0]
return buf
}
func init() {
bufferPool.New = func() interface{} {
return &packetBuffer{
Slice: make([]byte, 0, protocol.MaxReceivePacketSize),
Data: make([]byte, 0, protocol.MaxReceivePacketSize),
}
}
}