diff --git a/lang/pid/LICENSE b/lang/pid/LICENSE
new file mode 100644
index 00000000..e06d2081
--- /dev/null
+++ b/lang/pid/LICENSE
@@ -0,0 +1,202 @@
+Apache License
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+
diff --git a/lang/pid/README.md b/lang/pid/README.md
new file mode 100644
index 00000000..328518e9
--- /dev/null
+++ b/lang/pid/README.md
@@ -0,0 +1,9 @@
+# goid [![Build Status](https://travis-ci.org/petermattis/goid.svg?branch=master)](https://travis-ci.org/petermattis/goid)
+
+Programatically retrieve the current goroutine's ID. See [the CI
+configuration](.travis.yml) for supported Go versions. In addition,
+gccgo 7.2.1 (Go 1.8.3) is supported.
+
+The files in pid package are forked from pid[github.com/choleraehyq/pid],
+and we keep the original copyright and license for those files. We also 
+need to modify as we need, the modifications are Copyright of 2022 ByteDance Inc.
\ No newline at end of file
diff --git a/lang/pid/goid.go b/lang/pid/goid.go
new file mode 100644
index 00000000..dcf3c17f
--- /dev/null
+++ b/lang/pid/goid.go
@@ -0,0 +1,37 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+package goid
+
+import (
+	"bytes"
+	"runtime"
+	"strconv"
+)
+
+func ExtractGID(s []byte) int64 {
+	s = s[len("goroutine "):]
+	s = s[:bytes.IndexByte(s, ' ')]
+	gid, _ := strconv.ParseInt(string(s), 10, 64)
+	return gid
+}
+
+// Parse the goid from runtime.Stack() output. Slow, but it works.
+func getSlow() int64 {
+	var buf [64]byte
+	return ExtractGID(buf[:runtime.Stack(buf[:], false)])
+}
diff --git a/lang/pid/goid_gccgo.go b/lang/pid/goid_gccgo.go
new file mode 100644
index 00000000..a5dc174a
--- /dev/null
+++ b/lang/pid/goid_gccgo.go
@@ -0,0 +1,28 @@
+// Copyright 2018 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build gccgo
+// +build gccgo
+
+package goid
+
+//extern runtime.getg
+func getg() *g
+
+func Get() int64 {
+	return getg().goid
+}
diff --git a/lang/pid/goid_go1.3.c b/lang/pid/goid_go1.3.c
new file mode 100644
index 00000000..10cee75a
--- /dev/null
+++ b/lang/pid/goid_go1.3.c
@@ -0,0 +1,25 @@
+// Copyright 2015 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+// +build !go1.4
+
+#include <runtime.h>
+
+void ·Get(int64 ret) {
+  ret = g->goid;
+  USED(&ret);
+}
diff --git a/lang/pid/goid_go1.3.go b/lang/pid/goid_go1.3.go
new file mode 100644
index 00000000..431806a7
--- /dev/null
+++ b/lang/pid/goid_go1.3.go
@@ -0,0 +1,24 @@
+// Copyright 2015 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build !go1.4
+// +build !go1.4
+
+package goid
+
+// Get returns the id of the current goroutine.
+func Get() int64
diff --git a/lang/pid/goid_go1.4.go b/lang/pid/goid_go1.4.go
new file mode 100644
index 00000000..249937ae
--- /dev/null
+++ b/lang/pid/goid_go1.4.go
@@ -0,0 +1,37 @@
+// Copyright 2015 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build go1.4 && !go1.5
+// +build go1.4,!go1.5
+
+package goid
+
+import "unsafe"
+
+var pointerSize = unsafe.Sizeof(uintptr(0))
+
+// Backdoor access to runtime·getg().
+func getg() uintptr // in goid_go1.4.s
+
+// Get returns the id of the current goroutine.
+func Get() int64 {
+	// The goid is the 16th field in the G struct where each field is a
+	// pointer, uintptr or padded to that size. See runtime.h from the
+	// Go sources. I'm not aware of a cleaner way to determine the
+	// offset.
+	return *(*int64)(unsafe.Pointer(getg() + 16*pointerSize))
+}
diff --git a/lang/pid/goid_go1.4.s b/lang/pid/goid_go1.4.s
new file mode 100644
index 00000000..6bd1d796
--- /dev/null
+++ b/lang/pid/goid_go1.4.s
@@ -0,0 +1,20 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+// Assembly to get into package runtime without using exported symbols.
+// See https://github.com/golang/go/blob/release-branch.go1.4/misc/cgo/test/backdoor/thunk.s
+
+// +build amd64 amd64p32 arm 386
+// +build go1.4,!go1.5
+
+#include "textflag.h"
+
+#ifdef GOARCH_arm
+#define JMP B
+#endif
+
+TEXT ·getg(SB),NOSPLIT,$0-0
+	JMP	runtime·getg(SB)
diff --git a/lang/pid/goid_go1.5_amd64.go b/lang/pid/goid_go1.5_amd64.go
new file mode 100644
index 00000000..0b205a79
--- /dev/null
+++ b/lang/pid/goid_go1.5_amd64.go
@@ -0,0 +1,25 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build (amd64 || amd64p32) && gc && go1.5
+// +build amd64 amd64p32
+// +build gc
+// +build go1.5
+
+package goid
+
+func Get() int64
diff --git a/lang/pid/goid_go1.5_amd64.s b/lang/pid/goid_go1.5_amd64.s
new file mode 100644
index 00000000..5386f866
--- /dev/null
+++ b/lang/pid/goid_go1.5_amd64.s
@@ -0,0 +1,31 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+// Assembly to mimic runtime.getg.
+
+// +build amd64 amd64p32
+// +build gc,go1.5
+
+#include "go_asm.h"
+#include "textflag.h"
+
+// func Get() int64
+TEXT ·Get(SB),NOSPLIT,$0-8
+	MOVQ (TLS), R14
+	MOVQ g_goid(R14), R13
+	MOVQ R13, ret+0(FP)
+	RET
diff --git a/lang/pid/goid_go1.5_arm.go b/lang/pid/goid_go1.5_arm.go
new file mode 100644
index 00000000..a38f8c7c
--- /dev/null
+++ b/lang/pid/goid_go1.5_arm.go
@@ -0,0 +1,28 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build arm && gc && go1.5
+// +build arm,gc,go1.5
+
+package goid
+
+// Backdoor access to runtime·getg().
+func getg() *g // in goid_go1.5plus.s
+
+func Get() int64 {
+	return getg().goid
+}
diff --git a/lang/pid/goid_go1.5_arm.s b/lang/pid/goid_go1.5_arm.s
new file mode 100644
index 00000000..11714708
--- /dev/null
+++ b/lang/pid/goid_go1.5_arm.s
@@ -0,0 +1,29 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+// Assembly to mimic runtime.getg.
+// This should work on arm64 as well, but it hasn't been tested.
+
+// +build arm
+// +build gc,go1.5
+
+#include "textflag.h"
+
+// func getg() *g
+TEXT ·getg(SB),NOSPLIT,$0-8
+	MOVW g, ret+0(FP)
+	RET
diff --git a/lang/pid/goid_slow.go b/lang/pid/goid_slow.go
new file mode 100644
index 00000000..e0623d69
--- /dev/null
+++ b/lang/pid/goid_slow.go
@@ -0,0 +1,26 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build (go1.4 && !go1.5 && !amd64 && !amd64p32 && !arm && !386) || (go1.5 && !go1.6 && !amd64 && !amd64p32 && !arm) || (go1.6 && !amd64 && !amd64p32 && !arm) || (go1.9 && !amd64 && !amd64p32 && !arm)
+// +build go1.4,!go1.5,!amd64,!amd64p32,!arm,!386 go1.5,!go1.6,!amd64,!amd64p32,!arm go1.6,!amd64,!amd64p32,!arm go1.9,!amd64,!amd64p32,!arm
+
+package goid
+
+// Get returns the id of the current goroutine.
+func Get() int64 {
+	return getSlow()
+}
diff --git a/lang/pid/goid_test.go b/lang/pid/goid_test.go
new file mode 100644
index 00000000..d755488e
--- /dev/null
+++ b/lang/pid/goid_test.go
@@ -0,0 +1,52 @@
+// Copyright 2015 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+package goid
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestGet(t *testing.T) {
+	ch := make(chan *string, 100)
+	for i := 0; i < cap(ch); i++ {
+		go func(i int) {
+			goid := Get()
+			expected := getSlow()
+			if goid == expected {
+				ch <- nil
+				return
+			}
+			s := fmt.Sprintf("Expected %d, but got %d", expected, goid)
+			ch <- &s
+		}(i)
+	}
+
+	for i := 0; i < cap(ch); i++ {
+		val := <-ch
+		if val != nil {
+			t.Fatal(*val)
+		}
+	}
+}
+
+func BenchmarkGet(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		Get()
+	}
+}
diff --git a/lang/pid/os_darwin.go b/lang/pid/os_darwin.go
new file mode 100644
index 00000000..34b021e7
--- /dev/null
+++ b/lang/pid/os_darwin.go
@@ -0,0 +1,20 @@
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+package goid
+
+type sigset uint32
diff --git a/lang/pid/os_linux.go b/lang/pid/os_linux.go
new file mode 100644
index 00000000..07b7d8d3
--- /dev/null
+++ b/lang/pid/os_linux.go
@@ -0,0 +1,20 @@
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+package goid
+
+type sigset [2]uint32
diff --git a/lang/pid/os_windows.go b/lang/pid/os_windows.go
new file mode 100644
index 00000000..0080ec28
--- /dev/null
+++ b/lang/pid/os_windows.go
@@ -0,0 +1,20 @@
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+package goid
+
+type sigset struct{}
diff --git a/lang/pid/p_m_go1.10.go b/lang/pid/p_m_go1.10.go
new file mode 100644
index 00000000..880e1a1d
--- /dev/null
+++ b/lang/pid/p_m_go1.10.go
@@ -0,0 +1,50 @@
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build gc && go1.10 && !go1.13
+// +build gc,go1.10,!go1.13
+
+package goid
+
+type mutex struct {
+	// Futex-based impl treats it as uint32 key,
+	// while sema-based impl as M* waitm.
+	// Used to be a union, but unions break precise GC.
+	key uintptr
+}
+
+type p struct {
+	lock mutex
+	id   int32 // Here is pid
+}
+
+type m struct {
+	g0      uintptr // goroutine with scheduling stack
+	morebuf gobuf   // gobuf arg to morestack
+	divmod  uint32  // div/mod denominator for arm - known to liblink
+
+	// Fields not known to debuggers.
+	procid     uint64       // for debuggers, but offset not hard-coded
+	gsignal    uintptr      // signal-handling g
+	goSigStack gsignalStack // Go-allocated signal handling stack
+	sigmask    sigset       // storage for saved signal mask
+	tls        [6]uintptr   // thread-local storage (for x86 extern register)
+	mstartfn   func()
+	curg       uintptr // current running goroutine
+	caughtsig  uintptr // goroutine running during fatal signal
+	p          *p      // attached p for executing go code (nil if not executing go code)
+}
diff --git a/lang/pid/p_m_go1.13.go b/lang/pid/p_m_go1.13.go
new file mode 100644
index 00000000..0d065b7d
--- /dev/null
+++ b/lang/pid/p_m_go1.13.go
@@ -0,0 +1,42 @@
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build gc && go1.13 && !go1.19
+// +build gc,go1.13,!go1.19
+
+package goid
+
+type p struct {
+	id int32 // Here is pid
+}
+
+type m struct {
+	g0      uintptr // goroutine with scheduling stack
+	morebuf gobuf   // gobuf arg to morestack
+	divmod  uint32  // div/mod denominator for arm - known to liblink
+
+	// Fields not known to debuggers.
+	procid     uint64       // for debuggers, but offset not hard-coded
+	gsignal    uintptr      // signal-handling g
+	goSigStack gsignalStack // Go-allocated signal handling stack
+	sigmask    sigset       // storage for saved signal mask
+	tls        [6]uintptr   // thread-local storage (for x86 extern register)
+	mstartfn   func()
+	curg       uintptr // current running goroutine
+	caughtsig  uintptr // goroutine running during fatal signal
+	p          *p      // attached p for executing go code (nil if not executing go code)
+}
diff --git a/lang/pid/pid_go1.5.go b/lang/pid/pid_go1.5.go
new file mode 100644
index 00000000..4582efdf
--- /dev/null
+++ b/lang/pid/pid_go1.5.go
@@ -0,0 +1,32 @@
+// Copyright 2019 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build (amd64 || amd64p32 || arm64) && !windows && gc && go1.5
+// +build amd64 amd64p32 arm64
+// +build !windows
+// +build gc
+// +build go1.5
+
+package goid
+
+//go:nosplit
+func getPid() uintptr
+
+//go:nosplit
+func GetPid() int {
+	return int(getPid())
+}
diff --git a/lang/pid/pid_go1.5_amd64.s b/lang/pid/pid_go1.5_amd64.s
new file mode 100644
index 00000000..3ebca434
--- /dev/null
+++ b/lang/pid/pid_go1.5_amd64.s
@@ -0,0 +1,49 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file has been modified by Cholerae Hu.
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+// Assembly to mimic runtime.getg.
+
+// +build amd64 amd64p32
+// +build gc,go1.5
+
+#include "go_asm.h"
+#include "textflag.h"
+
+// func getPid() int64
+TEXT ·getPid(SB),NOSPLIT,$0-8
+	MOVQ (TLS), R14
+	MOVQ g_m(R14), R13
+	MOVQ m_p(R13), R14
+	MOVL p_id(R14), R13
+	MOVQ R13, ret+0(FP)
+	RET
diff --git a/lang/pid/pid_go1.5_arm64.s b/lang/pid/pid_go1.5_arm64.s
new file mode 100644
index 00000000..29e788b3
--- /dev/null
+++ b/lang/pid/pid_go1.5_arm64.s
@@ -0,0 +1,49 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file has been modified by Cholerae Hu.
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+// Assembly to mimic runtime.getg.
+
+// +build arm64
+// +build gc,go1.5
+
+#include "go_asm.h"
+#include "textflag.h"
+
+// func getPid() int64
+TEXT ·getPid(SB),NOSPLIT,$0-8
+    MOVD g, R14
+    MOVD g_m(R14), R13
+    MOVD m_p(R13), R14
+    MOVW p_id(R14), R13
+    MOVD R13, ret+0(FP)
+    RET
diff --git a/lang/pid/pid_go1.5_test.go b/lang/pid/pid_go1.5_test.go
new file mode 100644
index 00000000..51986622
--- /dev/null
+++ b/lang/pid/pid_go1.5_test.go
@@ -0,0 +1,88 @@
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build gc && go1.5
+// +build gc,go1.5
+
+package goid
+
+import (
+	"fmt"
+	"testing"
+	"unsafe"
+)
+
+var _ = unsafe.Sizeof(0)
+
+//go:linkname procPin runtime.procPin
+//go:nosplit
+func procPin() int
+
+//go:linkname procUnpin runtime.procUnpin
+//go:nosplit
+func procUnpin()
+
+func getTID() int {
+	tid := procPin()
+	procUnpin()
+	return tid
+}
+
+func TestParallelGetPid(t *testing.T) {
+	ch := make(chan *string, 100)
+	for i := 0; i < cap(ch); i++ {
+		go func(i int) {
+			id := GetPid()
+			expected := getTID()
+			if id == expected {
+				ch <- nil
+				return
+			}
+			s := fmt.Sprintf("Expected %d, but got %d", expected, id)
+			ch <- &s
+		}(i)
+	}
+
+	for i := 0; i < cap(ch); i++ {
+		val := <-ch
+		if val != nil {
+			t.Fatal(*val)
+		}
+	}
+}
+
+func TestGetPid(t *testing.T) {
+	p1 := GetPid()
+	p2 := getTID()
+	if p1 != p2 {
+		t.Fatalf("The result of GetPid %d procPin %d are not equal!", p1, p2)
+	}
+}
+
+func BenchmarkGetPid(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		GetPid()
+	}
+}
+
+func BenchmarkParallelGetPid(b *testing.B) {
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			GetPid()
+		}
+	})
+}
diff --git a/lang/pid/pid_go1.5_windows.go b/lang/pid/pid_go1.5_windows.go
new file mode 100644
index 00000000..ad19aa24
--- /dev/null
+++ b/lang/pid/pid_go1.5_windows.go
@@ -0,0 +1,26 @@
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build windows
+// +build windows
+
+package goid
+
+//go:nosplit
+func GetPid() int {
+	return 0
+}
diff --git a/lang/pid/runtime_gccgo_go1.8.go b/lang/pid/runtime_gccgo_go1.8.go
new file mode 100644
index 00000000..71868f35
--- /dev/null
+++ b/lang/pid/runtime_gccgo_go1.8.go
@@ -0,0 +1,19 @@
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build gccgo && go1.8
+// +build gccgo,go1.8
+
+package goid
+
+// https://github.com/gcc-mirror/gcc/blob/gcc-7-branch/libgo/go/runtime/runtime2.go#L329-L422
+
+type g struct {
+	_panic       uintptr
+	_defer       uintptr
+	m            uintptr
+	syscallsp    uintptr
+	syscallpc    uintptr
+	param        uintptr
+	atomicstatus uint32
+	goid         int64 // Here it is!
+}
diff --git a/lang/pid/runtime_go1.5.go b/lang/pid/runtime_go1.5.go
new file mode 100644
index 00000000..ad3dcb1a
--- /dev/null
+++ b/lang/pid/runtime_go1.5.go
@@ -0,0 +1,59 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build go1.5 && !go1.6
+// +build go1.5,!go1.6
+
+package goid
+
+// Just enough of the structs from runtime/runtime2.go to get the offset to goid.
+// See https://github.com/golang/go/blob/release-branch.go1.5/src/runtime/runtime2.go
+
+type stack struct {
+	lo uintptr
+	hi uintptr
+}
+
+type gobuf struct {
+	sp   uintptr
+	pc   uintptr
+	g    uintptr
+	ctxt uintptr
+	ret  uintptr
+	lr   uintptr
+	bp   uintptr
+}
+
+type g struct {
+	stack       stack
+	stackguard0 uintptr
+	stackguard1 uintptr
+
+	_panic       uintptr
+	_defer       uintptr
+	m            uintptr
+	stackAlloc   uintptr
+	sched        gobuf
+	syscallsp    uintptr
+	syscallpc    uintptr
+	stkbar       []uintptr
+	stkbarPos    uintptr
+	param        uintptr
+	atomicstatus uint32
+	stackLock    uint32
+	goid         int64 // Here it is!
+}
diff --git a/lang/pid/runtime_go1.6.go b/lang/pid/runtime_go1.6.go
new file mode 100644
index 00000000..932dba05
--- /dev/null
+++ b/lang/pid/runtime_go1.6.go
@@ -0,0 +1,45 @@
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build gc && go1.6 && !go1.9
+// +build gc,go1.6,!go1.9
+
+package goid
+
+// Just enough of the structs from runtime/runtime2.go to get the offset to goid.
+// See https://github.com/golang/go/blob/release-branch.go1.6/src/runtime/runtime2.go
+
+type stack struct {
+	lo uintptr
+	hi uintptr
+}
+
+type gobuf struct {
+	sp   uintptr
+	pc   uintptr
+	g    uintptr
+	ctxt uintptr
+	ret  uintptr
+	lr   uintptr
+	bp   uintptr
+}
+
+type g struct {
+	stack       stack
+	stackguard0 uintptr
+	stackguard1 uintptr
+
+	_panic       uintptr
+	_defer       uintptr
+	m            uintptr
+	stackAlloc   uintptr
+	sched        gobuf
+	syscallsp    uintptr
+	syscallpc    uintptr
+	stkbar       []uintptr
+	stkbarPos    uintptr
+	stktopsp     uintptr
+	param        uintptr
+	atomicstatus uint32
+	stackLock    uint32
+	goid         int64 // Here it is!
+}
diff --git a/lang/pid/runtime_go1.9.go b/lang/pid/runtime_go1.9.go
new file mode 100644
index 00000000..26272c1f
--- /dev/null
+++ b/lang/pid/runtime_go1.9.go
@@ -0,0 +1,46 @@
+// This file may have been modified by ByteDance Inc. ("ByteDance Modifications"). All ByteDance Modifications are Copyright 2022 ByteDance Inc.
+
+//go:build gc && go1.9
+// +build gc,go1.9
+
+package goid
+
+type stack struct {
+	lo uintptr
+	hi uintptr
+}
+
+type gobuf struct {
+	sp   uintptr
+	pc   uintptr
+	g    uintptr
+	ctxt uintptr
+	ret  uintptr
+	lr   uintptr
+	bp   uintptr
+}
+
+type g struct {
+	stack       stack
+	stackguard0 uintptr
+	stackguard1 uintptr
+
+	_panic       uintptr
+	_defer       uintptr
+	m            uintptr
+	sched        gobuf
+	syscallsp    uintptr
+	syscallpc    uintptr
+	stktopsp     uintptr
+	param        uintptr
+	atomicstatus uint32
+	stackLock    uint32
+	goid         int64 // Here it is!
+}
+
+type gsignalStack struct {
+	stack       stack
+	stackguard0 uintptr
+	stackguard1 uintptr
+	stktopsp    uintptr
+}