perf: use span cache for read

chore: use gopkg/spancache

benchmark/gen_code.sh

@@ -18,4 +18,4 @@ protoc --go_opt=paths=source_relative --go_out=./fastpb_gen --fastpb_opt=paths=s
 
 # gogo
 rm -rf ./gogo_gen && mkdir ./gogo_gen
-protoc --gogofaster_opt=paths=source_relative --gogofaster_out=./gogo_gen -I ./idl/ ./idl/testcase.proto
+protoc --gofast_opt=paths=source_relative --gofast_out=./gogo_gen -I ./idl/ ./idl/testcase.proto

fastpb_impl.go

@@ -20,6 +20,8 @@ import (
 	"math"
 	"unicode/utf8"
 
+	"github.com/bytedance/gopkg/lang/span"
+
 	"google.golang.org/protobuf/encoding/protowire"
 )
 
@@ -31,7 +33,10 @@ var Impl impl
 // to make room).
 const speculativeLength = 1
 
-var _ Protocol = impl{}
+var (
+	_         Protocol = impl{}
+	spanCache          = span.NewSpanCache(1024 * 1024) // 1MB
+)
 
 type impl struct{}
 
@@ -412,7 +417,8 @@ func (b impl) ReadString(buf []byte, _type int8) (value string, n int, err error
 	if EnforceUTF8() && !utf8.Valid(v) {
 		return value, 0, errInvalidUTF8
 	}
-	return string(v), n, nil
+	value = SliceByteToString(spanCache.Copy(v))
+	return value, n, nil
 }
 
 // ReadBytes .
@@ -425,8 +431,7 @@ func (b impl) ReadBytes(buf []byte, _type int8) (value []byte, n int, err error)
 	if n < 0 {
 		return value, 0, errDecode
 	}
-	value = make([]byte, len(v))
-	copy(value, v)
+	value = spanCache.Copy(v)
 	return value, n, nil
 }
 

go.mod

@@ -3,6 +3,9 @@ module github.com/cloudwego/fastpb
 go 1.17
 
 require (
-	github.com/gogo/protobuf v1.3.2
+	github.com/bytedance/gopkg v0.0.0-20240531030433-5df24c0168e2
+	github.com/golang/protobuf v1.5.0
 	google.golang.org/protobuf v1.28.0
 )
+
+require golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect

go.sum

@@ -1,38 +1,27 @@
-github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
-github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
+github.com/bytedance/gopkg v0.0.0-20240514070511-01b2cbcf35e1 h1:rT7Mm6uUpHeZQzfs2v0Mlj0SL02CzyVi+EB7VYPM/z4=
+github.com/bytedance/gopkg v0.0.0-20240514070511-01b2cbcf35e1/go.mod h1:FtQG3YbQG9L/91pbKSw787yBQPutC+457AvDW77fgUQ=
+github.com/bytedance/gopkg v0.0.0-20240531030433-5df24c0168e2 h1:e+WTWDw35RetW+Zuhcy4YPFmNPRh7yPG7lAaWJeUQl0=
+github.com/bytedance/gopkg v0.0.0-20240531030433-5df24c0168e2/go.mod h1:FtQG3YbQG9L/91pbKSw787yBQPutC+457AvDW77fgUQ=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/golang/protobuf v1.5.0 h1:LUVKkCeviFUMKqHa4tXIIij/lbhnMbP7Fn5wKdKkRh4=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
-github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
-github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
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-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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-golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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-golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
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 google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
 google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
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util.go

@@ -0,0 +1,9 @@
+package fastpb
+
+import "unsafe"
+
+// SliceByteToString converts []byte to string without copy.
+// DO NOT USE unless you know what you're doing.
+func SliceByteToString(b []byte) string {
+	return *(*string)(unsafe.Pointer(&b))
+}