feat: add pprof

plugin/debug/pkg/internal/report/testdata/README.md

@@ -0,0 +1,10 @@
+sample/ contains a sample program that can be profiled.
+sample.bin is its x86-64 binary.
+sample.cpu is a profile generated by sample.bin.
+
+To update the binary and profile:
+
+```shell
+go build -o sample.bin ./sample
+./sample.bin -cpuprofile sample.cpu
+```

plugin/debug/pkg/internal/report/testdata/sample/sample.go

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+//  Copyright 2017 Google Inc. All Rights Reserved.
+//
+//  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.
+
+// sample program that is used to produce some of the files in
+// pprof/internal/report/testdata.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"math"
+	"os"
+	"runtime/pprof"
+)
+
+var cpuProfile = flag.String("cpuprofile", "", "where to write cpu profile")
+
+func main() {
+	flag.Parse()
+	f, err := os.Create(*cpuProfile)
+	if err != nil {
+		log.Fatal("could not create CPU profile: ", err)
+	}
+	if err := pprof.StartCPUProfile(f); err != nil {
+		log.Fatal("could not start CPU profile: ", err)
+	}
+	defer pprof.StopCPUProfile()
+	busyLoop()
+}
+
+func busyLoop() {
+	m := make(map[int]int)
+	for i := 0; i < 1000000; i++ {
+		m[i] = i + 10
+	}
+	var sum float64
+	for i := 0; i < 100; i++ {
+		for _, v := range m {
+			sum += math.Abs(float64(v))
+		}
+	}
+	fmt.Println("Sum", sum)
+}

plugin/debug/pkg/internal/report/testdata/source.dot

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+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Duration: 10s, Total samples = 11111 " [shape=box fontsize=16 label="Duration: 10s, Total samples = 11111 \lShowing nodes accounting for 11111, 100% of 11111 total\l\lSee https://git.io/JfYMW for how to read the graph\l"] }
+N1 [label="tee\nsource2:8\n10000 (90.00%)" id="node1" fontsize=24 shape=box tooltip="tee testdata/source2:8 (10000)" color="#b20500" fillcolor="#edd6d5"]
+N2 [label="main\nsource1:2:2\n1 (0.009%)\nof 11111 (100%)" id="node2" fontsize=9 shape=box tooltip="main testdata/source1:2:2 (11111)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="tee\nsource2:2\n1000 (9.00%)\nof 11000 (99.00%)" id="node3" fontsize=14 shape=box tooltip="tee testdata/source2:2 (11000)" color="#b20000" fillcolor="#edd5d5"]
+N4 [label="tee\nsource2:8\n100 (0.9%)" id="node4" fontsize=10 shape=box tooltip="tee testdata/source2:8 (100)" color="#b2b0aa" fillcolor="#edecec"]
+N5 [label="bar\nsource1:10\n10 (0.09%)" id="node5" fontsize=9 shape=box tooltip="bar testdata/source1:10 (10)" color="#b2b2b1" fillcolor="#ededed"]
+N6 [label="bar\nsource1:10\n0 of 100 (0.9%)" id="node6" fontsize=8 shape=box tooltip="bar testdata/source1:10 (100)" color="#b2b0aa" fillcolor="#edecec"]
+N7 [label="foo\nsource1:4:4\n0 of 10 (0.09%)" id="node7" fontsize=8 shape=box tooltip="foo testdata/source1:4:4 (10)" color="#b2b2b1" fillcolor="#ededed"]
+N2 -> N3 [label=" 11000" weight=100 penwidth=5 color="#b20000" tooltip="main testdata/source1:2:2 -> tee testdata/source2:2 (11000)" labeltooltip="main testdata/source1:2:2 -> tee testdata/source2:2 (11000)"]
+N3 -> N1 [label=" 10000" weight=91 penwidth=5 color="#b20500" tooltip="tee testdata/source2:2 -> tee testdata/source2:8 (10000)" labeltooltip="tee testdata/source2:2 -> tee testdata/source2:8 (10000)"]
+N6 -> N4 [label=" 100" color="#b2b0aa" tooltip="bar testdata/source1:10 -> tee testdata/source2:8 (100)" labeltooltip="bar testdata/source1:10 -> tee testdata/source2:8 (100)"]
+N2 -> N6 [label=" 100" color="#b2b0aa" tooltip="main testdata/source1:2:2 -> bar testdata/source1:10 (100)" labeltooltip="main testdata/source1:2:2 -> bar testdata/source1:10 (100)"]
+N7 -> N5 [label=" 10" color="#b2b2b1" tooltip="foo testdata/source1:4:4 -> bar testdata/source1:10 (10)" labeltooltip="foo testdata/source1:4:4 -> bar testdata/source1:10 (10)"]
+N2 -> N7 [label=" 10" color="#b2b2b1" tooltip="main testdata/source1:2:2 -> foo testdata/source1:4:4 (10)" labeltooltip="main testdata/source1:2:2 -> foo testdata/source1:4:4 (10)"]
+}

plugin/debug/pkg/internal/report/testdata/source.rpt

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+Total: 11111
+ROUTINE ======================== bar in testdata/source1
+        10        110 (flat, cum)  0.99% of Total
+         .          .      5:source1 line 5;
+         .          .      6:source1 line 6;
+         .          .      7:source1 line 7;
+         .          .      8:source1 line 8;
+         .          .      9:source1 line 9;
+        10        110     10:source1 line 10;
+         .          .     11:source1 line 11;
+         .          .     12:source1 line 12;
+         .          .     13:source1 line 13;
+         .          .     14:source1 line 14;
+         .          .     15:source1 line 15;
+ROUTINE ======================== foo in testdata/source1
+         0         10 (flat, cum)  0.09% of Total
+         .          .      1:source1 line 1;
+         .          .      2:source1 line 2;
+         .          .      3:source1 line 3;
+         .         10      4:source1 line 4;
+         .          .      5:source1 line 5;
+         .          .      6:source1 line 6;
+         .          .      7:source1 line 7;
+         .          .      8:source1 line 8;
+         .          .      9:source1 line 9;
+ROUTINE ======================== main in testdata/source1
+         1      11111 (flat, cum)   100% of Total
+         .          .      1:source1 line 1;
+         1      11111      2:source1 line 2;
+         .          .      3:source1 line 3;
+         .          .      4:source1 line 4;
+         .          .      5:source1 line 5;
+         .          .      6:source1 line 6;
+         .          .      7:source1 line 7;
+ROUTINE ======================== tee in testdata/source2
+     11100      21100 (flat, cum) 189.90% of Total
+         .          .      1:source2 line 1;
+      1000      11000      2:source2 line 2;
+         .          .      3:source2 line 3;
+         .          .      4:source2 line 4;
+         .          .      5:source2 line 5;
+         .          .      6:source2 line 6;
+         .          .      7:source2 line 7;
+     10100      10100      8:source2 line 8;
+         .          .      9:source2 line 9;
+         .          .     10:source2 line 10;
+         .          .     11:source2 line 11;
+         .          .     12:source2 line 12;
+         .          .     13:source2 line 13;

plugin/debug/pkg/internal/report/testdata/source1

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+source1 line 1;
+source1 line 2;
+source1 line 3;
+source1 line 4;
+source1 line 5;
+source1 line 6;
+source1 line 7;
+source1 line 8;
+source1 line 9;
+source1 line 10;
+source1 line 11;
+source1 line 12;
+source1 line 13;
+source1 line 14;
+source1 line 15;
+source1 line 16;
+source1 line 17;
+source1 line 18;
+

plugin/debug/pkg/internal/report/testdata/source2

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+source2 line 1;
+source2 line 2;
+source2 line 3;
+source2 line 4;
+source2 line 5;
+source2 line 6;
+source2 line 7;
+source2 line 8;
+source2 line 9;
+source2 line 10;
+source2 line 11;
+source2 line 12;
+source2 line 13;
+source2 line 14;
+source2 line 15;
+source2 line 16;
+source2 line 17;
+source2 line 18;
+