From ca63f541c329985270ba69429981ef20e568f7f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20Geisend=C3=B6rfer?=
 <felix.geisendoerfer@datadoghq.com>
Date: Mon, 24 May 2021 11:50:26 +0200
Subject: [PATCH] examples

---
 examples/delve-trace/go.mod     |  3 +++
 examples/delve-trace/main.go    | 24 ++++++++++++++++++++++++
 examples/frame-order/frames.txt | 13 +++++++++++++
 examples/frame-order/go.mod     |  3 +++
 examples/frame-order/main.go    | 21 +++++++++++++++++++++
 5 files changed, 64 insertions(+)
 create mode 100644 examples/delve-trace/go.mod
 create mode 100644 examples/delve-trace/main.go
 create mode 100644 examples/frame-order/frames.txt
 create mode 100644 examples/frame-order/go.mod
 create mode 100644 examples/frame-order/main.go

diff --git a/examples/delve-trace/go.mod b/examples/delve-trace/go.mod
new file mode 100644
index 0000000..c73f106
--- /dev/null
+++ b/examples/delve-trace/go.mod
@@ -0,0 +1,3 @@
+module github.com/felixge/go-profiler-notes/examples/delve-trace
+
+go 1.16
diff --git a/examples/delve-trace/main.go b/examples/delve-trace/main.go
new file mode 100644
index 0000000..36f6ba4
--- /dev/null
+++ b/examples/delve-trace/main.go
@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	if err := run(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func run() error {
+	for i := 0; i < 10; i++ {
+		foo(i)
+	}
+	return nil
+}
+
+func foo(i int) int {
+	return i * 2
+}
diff --git a/examples/frame-order/frames.txt b/examples/frame-order/frames.txt
new file mode 100644
index 0000000..a999441
--- /dev/null
+++ b/examples/frame-order/frames.txt
@@ -0,0 +1,13 @@
+goroutine 1 [running]:
+runtime/pprof.writeGoroutineStacks(0x111e660, 0xc0000a0018, 0x30, 0x12b3aa8)
+	/usr/local/Cellar/go/1.15.7_1/libexec/src/runtime/pprof/pprof.go:693 +0x9f
+runtime/pprof.writeGoroutine(0x111e660, 0xc0000a0018, 0x2, 0x0, 0x602e6537)
+	/usr/local/Cellar/go/1.15.7_1/libexec/src/runtime/pprof/pprof.go:682 +0x45
+runtime/pprof.(*Profile).WriteTo(0x11ae4e0, 0x111e660, 0xc0000a0018, 0x2, 0xc0000a0020, 0x0)
+	/usr/local/Cellar/go/1.15.7_1/libexec/src/runtime/pprof/pprof.go:331 +0x3f2
+main.bar()
+	/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/frame-order/main.go:19 +0xd5
+main.foo(...)
+	/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/frame-order/main.go:13
+main.main()
+	/Users/felix.geisendoerfer/go/src/github.com/felixge/go-profiler-notes/examples/frame-order/main.go:9 +0x25
diff --git a/examples/frame-order/go.mod b/examples/frame-order/go.mod
new file mode 100644
index 0000000..d22e7fe
--- /dev/null
+++ b/examples/frame-order/go.mod
@@ -0,0 +1,3 @@
+module github.com/felixge/go-profiler-notes/examples/frame-order
+
+go 1.15
diff --git a/examples/frame-order/main.go b/examples/frame-order/main.go
new file mode 100644
index 0000000..cc1e232
--- /dev/null
+++ b/examples/frame-order/main.go
@@ -0,0 +1,21 @@
+package main
+
+import (
+	"os"
+	"runtime/pprof"
+)
+
+func main() {
+	foo()
+}
+
+func foo() {
+	bar()
+}
+func bar() {
+	debug2, _ := os.Create("frames.txt")
+	debug0, _ := os.Create("frames.pb.gz")
+
+	pprof.Lookup("goroutine").WriteTo(debug2, 2)
+	pprof.Lookup("goroutine").WriteTo(debug0, 0)
+}