1.3.2

Fix import of multithreaded Chrome profiles (#194 )
In #160, I wrote code which incorrectly assumed that at most one profile would be active at a time. It turns out this assumption is incorrect because of webworkers! This PR introduces a fix which correctly separates samples taken on the main thread from samples taken on worker threads, and allows viewing both in speedscope. Fixes #171
2018-12-03 19:25:54 -08:00 · 2018-12-03 19:21:59 -08:00 · 2018-11-08 10:05:52 -08:00 · 2018-11-08 10:01:05 -08:00 · 2018-10-29 09:56:06 -07:00 · 2018-10-29 09:43:10 -07:00
22 changed files with 9798 additions and 48 deletions
@@ -1,5 +1,34 @@
 ## Unreleased

+## [1.3.2] - 2018-12-03
+
+* Fixed import of multithreaded Chrome profiles [#19] (by @jlfwong)
+
+### Fixed
+
+## [1.3.1] - 2018-11-08
+
+### Fixed
+
+* Fixed a file import performance regression by using TextDecoder [#188] (by @jlfwong)
+
+## [1.3.0] - 2018-10-29
+
+### Added
+
+* Support import from Haskell GHC JSON format support [#183] (by @trishume)
+
+### Fixed
+
+* Make the wasd keymappings work on azerty keyboards [#184] (by @vrischmann)
+* Fix import of binary formats via profileURL [#179] (by @f-hj)
+
+## [1.2.0] - 2018-10-08
+
+### Added
+
+* Add import of v8 heap allocation profile [#170] (by @vmarchaud)
+
 ## [1.1.0] - 2018-09-26

 ### Added
@@ -24,7 +53,7 @@

 * Allow optional CR before LF when probing collapsed stacks files [#154]
 * Fix import for Firefox 63 [#156]
-* Change time formatting for minutes from 1.50min to 1:30 [#153]
+* Change time formatting for minutes from 1.50min to 1:30 [#153] (by @Alex-Diez)

 ## [1.0.1] - 2018-08-23

@@ -40,9 +40,12 @@ speedscope is designed to ingest profiles from a variety of different profilers
 - Ruby
  - [Importing from stackprof](https://github.com/jlfwong/speedscope/wiki/Importing-from-stackprof-(ruby))
  - [Importing from rbspy](https://github.com/jlfwong/speedscope/wiki/Importing-from-rbspy-(ruby))
+- Go
+  - [Importing from pprof](https://github.com/jlfwong/speedscope/wiki/Importing-from-pprof-(go))  
 - Native code
  - [Importing from Instruments.app](https://github.com/jlfwong/speedscope/wiki/Importing-from-Instruments.app) (macOS)
  - [Importing from `perf`](https://github.com/jlfwong/speedscope/wiki/Importing-from-perf-(linux)) (linux)
+- [Importing from GHC (Haskell)](https://github.com/jlfwong/speedscope/wiki/Importing-from-Haskell)
 - [Importing from custom sources](https://github.com/jlfwong/speedscope/wiki/Importing-from-custom-sources)

 Contributions to add support for additional formats are welcome! See issues with the ["import source" tag](https://github.com/jlfwong/speedscope/issues?q=is%3Aissue+is%3Aopen+label%3A%22import+source%22).
@@ -1,6 +1,6 @@
 {
  "name": "speedscope",
-  "version": "1.1.0",
+  "version": "1.3.2",
  "description": "",
  "repository": "jlfwong/speedscope",
  "main": "index.js",
@@ -17,15 +17,8 @@
    "test": "tsc --noEmit && npm run lint && npm run coverage",
    "serve": "parcel assets/index.html --open --no-autoinstall"
  },
-  "files": [
-    "bin/cli.js",
-    "dist/release/**",
-    "!*.map"
-  ],
-  "browserslist": [
-    "last 2 Chrome versions",
-    "last 2 Firefox versions"
-  ],
+  "files": ["bin/cli.js", "dist/release/**", "!*.map"],
+  "browserslist": ["last 2 Chrome versions", "last 2 Firefox versions"],
  "author": "",
  "license": "MIT",
  "devDependencies": {
@@ -58,17 +51,8 @@
      "^.+\\.tsx?$": "ts-jest"
    },
    "testRegex": "\\.test\\.tsx?$",
-    "collectCoverageFrom": [
-      "**/*.{ts,tsx}",
-      "!**/*.d.{ts,tsx}"
-    ],
-    "moduleFileExtensions": [
-      "ts",
-      "tsx",
-      "js",
-      "jsx",
-      "json"
-    ]
+    "collectCoverageFrom": ["**/*.{ts,tsx}", "!**/*.d.{ts,tsx}"],
+    "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json"]
  },
  "dependencies": {
    "opn": "5.3.0"
@@ -0,0 +1,28 @@
+<script>
+  function banana() {
+    let prod = 1
+    for (let i = 1; i < 1000; i++) {
+      prod *= i
+    }
+    return prod
+  }
+
+  function apple() {
+    for (let i = 0; i < 1000; i++) {
+      banana()
+    }
+  }
+
+  let bounces = 0
+
+  const worker = new Worker('./worker.js')
+
+  worker.onmessage = function() {
+    apple()
+    if (bounces++ < 10) {
+      worker.postMessage('ping')
+    }
+  }
+
+  worker.postMessage('ping')
+</script>
@@ -0,0 +1,18 @@
+function gamma() {
+  let prod = 1
+  for (let i = 1; i < 1000; i++) {
+    prod *= i
+  }
+  return prod
+}
+
+function alpha() {
+  for (let i = 0; i < 1000; i++) {
+    gamma()
+  }
+}
+
+onmessage = function(e) {
+  alpha()
+  postMessage('pong')
+}
@@ -515,6 +515,845 @@ exports[`importFromChromeTimeline Chrome 69: indexToView 1`] = `0`;

 exports[`importFromChromeTimeline Chrome 69: profileGroup.name 1`] = `"simple.json"`;

+exports[`importFromChromeTimeline Workers Chrome 70 1`] = `
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+      "key": "apple:http://127.0.0.1:8081/worker.html:9:16",
+      "line": 9,
+      "name": "apple",
+      "selfWeight": 660,
+      "totalWeight": 20852,
+    },
+    Frame {
+      "col": 17,
+      "file": "http://127.0.0.1:8081/worker.html",
+      "key": "banana:http://127.0.0.1:8081/worker.html:1:17",
+      "line": 1,
+      "name": "banana",
+      "selfWeight": 18755,
+      "totalWeight": 20192,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": "postMessage:undefined:undefined:undefined",
+      "line": undefined,
+      "name": "postMessage",
+      "selfWeight": 251,
+      "totalWeight": 251,
+    },
+  ],
+  "name": "worker.json - CrRendererMain",
+  "stacks": Array [
+    " 15.06ms",
+    "(anonymous);(anonymous);saveBuiltin;makeCallable;(anonymous) 102.00µs",
+    "(anonymous);(anonymous);saveBuiltin 92.00µs",
+    "(anonymous);(anonymous);saveBuiltin;(program) 2.62ms",
+    " 312.00µs",
+    "(program) 295.00µs",
+    " 105.00µs",
+    "(program) 306.00µs",
+    " 111.00µs",
+    "(program) 109.00µs",
+    " 197.00µs",
+    "(program) 110.00µs",
+    "(program);(garbage collector) 102.00µs",
+    "(program) 1.25ms",
+    "(anonymous);(anonymous);saveBuiltin 141.00µs",
+    "(anonymous);(anonymous);saveBuiltin;makeCallable 122.00µs",
+    "(anonymous);(anonymous);saveBuiltin;makeCallable;(program) 6.65ms",
+    "(anonymous) 598.00µs",
+    "(anonymous);(garbage collector) 778.00µs",
+    "(anonymous) 660.00µs",
+    "(anonymous);La 407.00µs",
+    "(anonymous);La;get webstore 139.00µs",
+    "(anonymous);La;get webstore;(anonymous) 1.15ms",
+    "(anonymous);La;get webstore;(anonymous);privates 132.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous) 791.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates 135.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous) 669.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous) 375.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates 134.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous) 256.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates 135.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous) 847.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates 133.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous) 580.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous) 153.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);expose;target.(anonymous function);Apply 146.00µs",
+    "(anonymous);La;get webstore;(anonymous) 744.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous) 151.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates;(anonymous);expose 147.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates 141.00µs",
+    "(anonymous);La;get webstore;(anonymous) 146.00µs",
+    "(anonymous);La;get webstore;(anonymous);privates 139.00µs",
+    "(anonymous);La;get webstore;(anonymous) 142.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;privates 120.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;shouldCheckUnprivileged;target.(anonymous function);Apply 146.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply 259.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);JSONSchemaValidator.addTypes 149.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply 153.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply 251.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous);target.(anonymous function) 292.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous) 295.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply 152.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous) 159.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);privates 135.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);privates 133.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);Event 139.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);Event;privates.constructPrivate;target.(anonymous function);Apply 137.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);Event;privates.constructPrivate;target.(anonymous function);Apply;EventImpl 125.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous) 142.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;addProperties 149.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;addProperties;forEach;target.(anonymous function);Apply 126.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate 149.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;runHooks_;target.(anonymous function);Apply;(anonymous) 141.00µs",
+    "(anonymous);La;get webstore;(anonymous);generate;runHooks_;target.(anonymous function);Apply;(anonymous);(anonymous) 132.00µs",
+    "(anonymous) 160.00µs",
+    "(anonymous);l 127.00µs",
+    "(anonymous) 132.00µs",
+    "(anonymous);publicClassPrototype.(anonymous function);target.(anonymous function);Apply 141.00µs",
+    "(anonymous);publicClassPrototype.(anonymous function);target.(anonymous function);Apply;EventImpl.addListener 135.00µs",
+    "(anonymous);bb 146.00µs",
+    "(anonymous);(anonymous) 141.00µs",
+    "(anonymous);(anonymous);(program) 930.00µs",
+    "(anonymous);(anonymous);saveBuiltin;makeCallable;(anonymous) 132.00µs",
+    "(anonymous);(anonymous);(anonymous) 116.00µs",
+    "(anonymous);(anonymous);(anonymous);(program) 27.49ms",
+    "(anonymous) 542.00µs",
+    "(anonymous);insertTextScript 392.00µs",
+    "(anonymous);insertTextScript;insertHeaderNode 292.00µs",
+    "(anonymous);insertTextScript;insertHeaderNode;appendChild;(anonymous);(anonymous) 148.00µs",
+    "(anonymous);insertTextScript;insertHeaderNode;appendChild 145.00µs",
+    "(anonymous);listenForMessage;get webstore 148.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous) 121.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous) 130.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous);privates;(anonymous) 254.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);privates;(anonymous);privates;(anonymous);(anonymous) 135.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);privates 122.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);privates;(anonymous);target.(anonymous function);Apply 130.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous) 141.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function) 154.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous) 123.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous);target.(anonymous function) 137.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply 257.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(garbage collector) 1.58ms",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous) 128.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply;(anonymous);target.(anonymous function);Apply 289.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);privates 292.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;target.(anonymous function);Apply;(anonymous);Event;privates.constructPrivate;target.(anonymous function);Apply;EventImpl 126.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;addProperties;forEach;target.(anonymous function) 144.00µs",
+    "(anonymous);listenForMessage;get webstore;(anonymous);generate;addProperties;forEach;target.(anonymous function);(program) 291.00µs",
+    "(anonymous);Worker 416.00µs",
+    "(anonymous);Worker;(program) 523.00µs",
+    "cb;$a 278.00µs",
+    "cb;$a;(program) 81.00µs",
+    "(anonymous);setTimeout 42.00µs",
+    "(anonymous);setTimeout;(program) 641.00µs",
+    "(anonymous);setTimeout 21.00µs",
+    "(anonymous) 117.00µs",
+    "(anonymous);(program) 540.00µs",
+    " 511.00µs",
+    "(program) 125.00µs",
+    " 136.00µs",
+    "(program) 1.06ms",
+    " 133.00µs",
+    "(program) 1.46ms",
+    " 261.00µs",
+    "(program) 147.00µs",
+    " 4.74ms",
+    "(program) 145.00µs",
+    " 525.00µs",
+    "(program) 221.00µs",
+    " 325.00µs",
+    "(program) 399.00µs",
+    " 146.00µs",
+    "(program) 391.00µs",
+    " 4.01ms",
+    "(program) 131.00µs",
+    " 1.10ms",
+    "(program) 146.00µs",
+    " 2.91ms",
+    "(program) 280.00µs",
+    "worker.onmessage;apple;banana 420.00µs",
+    "worker.onmessage;apple 128.00µs",
+    "worker.onmessage;apple;banana 1.27ms",
+    "worker.onmessage;apple 146.00µs",
+    "worker.onmessage;apple;banana 1.06ms",
+    "worker.onmessage;apple 130.00µs",
+    "worker.onmessage;apple;banana 129.00µs",
+    "worker.onmessage;postMessage 143.00µs",
+    " 1.80ms",
+    "worker.onmessage;apple;banana 1.53ms",
+    "worker.onmessage;postMessage 108.00µs",
+    " 1.63ms",
+    "(program) 141.00µs",
+    "worker.onmessage;apple;banana 1.86ms",
+    " 1.75ms",
+    "worker.onmessage;apple;banana 1.67ms",
+    " 1.84ms",
+    "worker.onmessage;apple;banana 1.62ms",
+    "worker.onmessage;apple;banana;(program) 146.00µs",
+    " 1.67ms",
+    "worker.onmessage;apple;banana 1.45ms",
+    "worker.onmessage;apple;banana;(garbage collector) 923.00µs",
+    "worker.onmessage;apple;banana 136.00µs",
+    "worker.onmessage;apple;banana;(program) 132.00µs",
+    " 1.81ms",
+    "(program) 136.00µs",
+    "worker.onmessage;apple;banana 1.69ms",
+    " 1.75ms",
+    "(program) 131.00µs",
+    "worker.onmessage;apple;banana 282.00µs",
+    "worker.onmessage;apple 128.00µs",
+    "worker.onmessage;apple;banana 1.10ms",
+    "worker.onmessage;apple;banana;(program) 136.00µs",
+    " 1.57ms",
+    "worker.onmessage;apple;banana 665.00µs",
+    "worker.onmessage;apple 128.00µs",
+    "worker.onmessage;apple;banana 779.00µs",
+    " 1.56ms",
+    "(program) 131.00µs",
+    "worker.onmessage;apple;banana 1.56ms",
+    " 1.57ms",
+    "(program) 149.00µs",
+    "worker.onmessage;apple;banana 1.54ms",
+    "worker.onmessage;apple;banana;(program) 100.00µs",
+    " 52.45ms",
+    "(program) 125.00µs",
+    " 88.71ms",
+    "(program) 1.06ms",
+  ],
+}
+`;
+
+exports[`importFromChromeTimeline Workers Chrome 70 2`] = `
+Object {
+  "frames": Array [
+    Frame {
+      "col": 20,
+      "file": "http://127.0.0.1:8081/worker.js",
+      "key": "onmessage:http://127.0.0.1:8081/worker.js:14:20",
+      "line": 14,
+      "name": "onmessage",
+      "selfWeight": 402,
+      "totalWeight": 187278,
+    },
+    Frame {
+      "col": 14,
+      "file": "http://127.0.0.1:8081/worker.js",
+      "key": "alpha:http://127.0.0.1:8081/worker.js:8:14",
+      "line": 8,
+      "name": "alpha",
+      "selfWeight": 7945,
+      "totalWeight": 177837,
+    },
+    Frame {
+      "col": 14,
+      "file": "http://127.0.0.1:8081/worker.js",
+      "key": "gamma:http://127.0.0.1:8081/worker.js:0:14",
+      "line": 0,
+      "name": "gamma",
+      "selfWeight": 13631,
+      "totalWeight": 21888,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": "(program):undefined:undefined:undefined",
+      "line": undefined,
+      "name": "(program)",
+      "selfWeight": 164753,
+      "totalWeight": 164753,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": "postMessage:undefined:undefined:undefined",
+      "line": undefined,
+      "name": "postMessage",
+      "selfWeight": 547,
+      "totalWeight": 5452,
+    },
+  ],
+  "name": "worker.json - DedicatedWorker thread",
+  "stacks": Array [
+    " 4.33ms",
+    "onmessage;alpha;gamma 604.00µs",
+    "onmessage;alpha 1.38ms",
+    "onmessage;alpha;gamma 3.31ms",
+    "onmessage 270.00µs",
+    "onmessage;(program) 3.59ms",
+    "onmessage;alpha;gamma 127.00µs",
+    "onmessage;alpha 128.00µs",
+    "onmessage;alpha;gamma 1.48ms",
+    "onmessage;alpha;gamma;(program) 1.68ms",
+    "onmessage;alpha;gamma 1.65ms",
+    "onmessage;alpha;gamma;(program) 2.00ms",
+    "onmessage;alpha;gamma 1.62ms",
+    "onmessage;postMessage 146.00µs",
+    "onmessage;postMessage;(program) 1.65ms",
+    "onmessage;alpha;gamma 1.70ms",
+    "onmessage;postMessage 256.00µs",
+    "onmessage;postMessage;(program) 1.63ms",
+    "onmessage;alpha;gamma 670.00µs",
+    "onmessage;alpha 134.00µs",
+    "onmessage;alpha;gamma 899.00µs",
+    "onmessage;alpha;gamma;(program) 2.72ms",
+    "onmessage 132.00µs",
+    "onmessage;alpha;gamma 1.57ms",
+    "onmessage;alpha;gamma;(program) 1.85ms",
+    "onmessage;alpha 1.75ms",
+    "onmessage;alpha;(program) 1.76ms",
+    "onmessage;alpha 1.44ms",
+    "onmessage;postMessage 145.00µs",
+    "onmessage;postMessage;(program) 1.63ms",
+    "onmessage;alpha 1.57ms",
+    "onmessage;alpha;(program) 1.60ms",
+    "onmessage;alpha 1.55ms",
+    "onmessage;alpha;(program) 144.64ms",
+  ],
+}
+`;
+
+exports[`importFromChromeTimeline Workers Chrome 70: indexToView 1`] = `0`;
+
+exports[`importFromChromeTimeline Workers Chrome 70: profileGroup.name 1`] = `"worker.json"`;
+
 exports[`importFromChromeTimeline: indexToView 1`] = `0`;

 exports[`importFromChromeTimeline: profileGroup.name 1`] = `"simple-timeline.json"`;
@@ -0,0 +1,864 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`importFromHaskell 1`] = `
+Object {
+  "frames": Array [
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 144,
+      "line": undefined,
+      "name": "MAIN.MAIN",
+      "selfWeight": 0,
+      "totalWeight": 798,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 56,
+      "line": undefined,
+      "name": "GHC.Conc.Signal.CAF",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 73,
+      "line": undefined,
+      "name": "GHC.IO.Encoding.CAF",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 75,
+      "line": undefined,
+      "name": "GHC.IO.Encoding.Iconv.CAF",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 84,
+      "line": undefined,
+      "name": "GHC.IO.Handle.FD.CAF",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 119,
+      "line": undefined,
+      "name": "Text.Printf.CAF",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 26,
+      "line": undefined,
+      "name": "Main.CAF:eta1_r6nI",
+      "selfWeight": 0,
+      "totalWeight": 1,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:(21,1)-(38,42)",
+      "key": 19,
+      "line": undefined,
+      "name": "Main.main",
+      "selfWeight": 0,
+      "totalWeight": 733,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:(56,1)-(57,42)",
+      "key": 4,
+      "line": undefined,
+      "name": "Main.check",
+      "selfWeight": 320,
+      "totalWeight": 320,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:31:9-29",
+      "key": 16,
+      "line": undefined,
+      "name": "Main.main.long",
+      "selfWeight": 0,
+      "totalWeight": 3,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 28,
+      "line": undefined,
+      "name": "Main.CAF:eta_r6nG",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 35,
+      "line": undefined,
+      "name": "Main.CAF:io1",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 27,
+      "line": undefined,
+      "name": "Main.CAF:lvl2_r6nH",
+      "selfWeight": 0,
+      "totalWeight": 3,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:(61,1)-(63,26)",
+      "key": 3,
+      "line": undefined,
+      "name": "Main.make",
+      "selfWeight": 406,
+      "totalWeight": 409,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:63:19-26",
+      "key": 1,
+      "line": undefined,
+      "name": "Main.make.d2",
+      "selfWeight": 2,
+      "totalWeight": 2,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:63:9-16",
+      "key": 2,
+      "line": undefined,
+      "name": "Main.make.i2",
+      "selfWeight": 1,
+      "totalWeight": 1,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 24,
+      "line": undefined,
+      "name": "Main.CAF:lvl4_r6nL",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 22,
+      "line": undefined,
+      "name": "Main.CAF:lvl8_r6nP",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 21,
+      "line": undefined,
+      "name": "Main.CAF:main1",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 29,
+      "line": undefined,
+      "name": "Main.CAF:main11",
+      "selfWeight": 0,
+      "totalWeight": 4,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:27:9-35",
+      "key": 15,
+      "line": undefined,
+      "name": "Main.main.c",
+      "selfWeight": 0,
+      "totalWeight": 8,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 30,
+      "line": undefined,
+      "name": "Main.CAF:main12",
+      "selfWeight": 0,
+      "totalWeight": 4,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 23,
+      "line": undefined,
+      "name": "Main.CAF:main5",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 31,
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+    Frame {
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+    },
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+      "name": "Main.CAF:main_maxN",
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+    },
+    Frame {
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+      "file": "src/Main.hs:23:9-35",
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+      "name": "Main.main.maxN",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:22:9",
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+      "line": undefined,
+      "name": "Main.CAF:main_n",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:22:9-14",
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+      "line": undefined,
+      "name": "Main.main.n",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:24:9-16",
+      "key": 32,
+      "line": undefined,
+      "name": "Main.CAF:main_stretchN",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:24:9-27",
+      "key": 14,
+      "line": undefined,
+      "name": "Main.main.stretchN",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:17:1-4",
+      "key": 36,
+      "line": undefined,
+      "name": "Main.CAF:minN",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:17:1-8",
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+      "name": "Main.minN",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "name": "GC.GC",
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+      "totalWeight": 46,
+    },
+    Frame {
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+      "file": undefined,
+      "key": 147,
+      "line": undefined,
+      "name": "PROFILING.OVERHEAD_of",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": undefined,
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+      "line": undefined,
+      "name": "SYSTEM.SYSTEM",
+      "selfWeight": 19,
+      "totalWeight": 19,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:35:26-54",
+      "key": 18,
+      "line": undefined,
+      "name": "Main.main.\\\\",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:19:1-56",
+      "key": 8,
+      "line": undefined,
+      "name": "Main.io",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:34:9-28",
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+      "line": undefined,
+      "name": "Main.main.vs",
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+      "totalWeight": 721,
+    },
+    Frame {
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+      "file": "src/Main.hs:(42,1)-(45,38)",
+      "key": 11,
+      "line": undefined,
+      "name": "Main.depth",
+      "selfWeight": 0,
+      "totalWeight": 721,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:(49,1)-(52,31)",
+      "key": 7,
+      "line": undefined,
+      "name": "Main.sumT",
+      "selfWeight": 0,
+      "totalWeight": 721,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:51:9-31",
+      "key": 6,
+      "line": undefined,
+      "name": "Main.sumT.a",
+      "selfWeight": 3,
+      "totalWeight": 369,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:52:9-31",
+      "key": 5,
+      "line": undefined,
+      "name": "Main.sumT.b",
+      "selfWeight": 1,
+      "totalWeight": 352,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:45:9-38",
+      "key": 10,
+      "line": undefined,
+      "name": "Main.depth.n",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+  ],
+  "name": "binary-trees time",
+  "stacks": Array [
+    "MAIN.MAIN;Main.CAF:eta1_r6nI;Main.main;Main.check 1.00ms",
+    "MAIN.MAIN;Main.CAF:lvl2_r6nH;Main.main;Main.main.long;Main.make 3.00ms",
+    "MAIN.MAIN;Main.CAF:main11;Main.main;Main.main.c;Main.check 4.00ms",
+    "MAIN.MAIN;Main.CAF:main12;Main.main;Main.main.c;Main.make 4.00ms",
+    "MAIN.MAIN;GC.GC 46.00ms",
+    "MAIN.MAIN;SYSTEM.SYSTEM 19.00ms",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.a;Main.check 153.00ms",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.a;Main.make;Main.make.d2 2.00ms",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.a;Main.make;Main.make.i2 1.00ms",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.a;Main.make 210.00ms",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.a 3.00ms",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.b;Main.check 162.00ms",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.b;Main.make 189.00ms",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.b 1.00ms",
+  ],
+}
+`;
+
+exports[`importFromHaskell 2`] = `
+Object {
+  "frames": Array [
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+      "file": undefined,
+      "key": 144,
+      "line": undefined,
+      "name": "MAIN.MAIN",
+      "selfWeight": 648,
+      "totalWeight": 1921672664,
+    },
+    Frame {
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+      "totalWeight": 640,
+    },
+    Frame {
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+    },
+    Frame {
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+    },
+    Frame {
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+    },
+    Frame {
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+      "name": "Main.main",
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+      "totalWeight": 1921591544,
+    },
+    Frame {
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+      "name": "Main.check",
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+      "totalWeight": 406149056,
+    },
+    Frame {
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+      "name": "Main.main.long",
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+    },
+    Frame {
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+      "name": "Main.CAF:eta_r6nG",
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+    },
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+      "name": "Main.CAF:io1",
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+      "totalWeight": 1888,
+    },
+    Frame {
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+      "name": "Main.CAF:lvl2_r6nH",
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+    },
+    Frame {
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+      "file": "src/Main.hs:(61,1)-(63,26)",
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+      "name": "Main.make",
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+    },
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+      "name": "Main.make.d2",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:63:9-16",
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+      "name": "Main.make.i2",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "line": undefined,
+      "name": "Main.CAF:lvl4_r6nL",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "name": "Main.CAF:lvl8_r6nP",
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+      "totalWeight": 520,
+    },
+    Frame {
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+      "name": "Main.CAF:main1",
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+      "totalWeight": 16,
+    },
+    Frame {
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+      "name": "Main.CAF:main11",
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+      "totalWeight": 4194304,
+    },
+    Frame {
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+      "file": "src/Main.hs:27:9-35",
+      "key": 15,
+      "line": undefined,
+      "name": "Main.main.c",
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+      "totalWeight": 19922736,
+    },
+    Frame {
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+      "name": "Main.CAF:main12",
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+      "totalWeight": 15728432,
+    },
+    Frame {
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+      "line": undefined,
+      "name": "Main.CAF:main5",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
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+      "name": "Main.CAF:main7",
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+      "totalWeight": 880,
+    },
+    Frame {
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+      "line": undefined,
+      "name": "Main.CAF:main9",
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+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:23:9-12",
+      "key": 33,
+      "line": undefined,
+      "name": "Main.CAF:main_maxN",
+      "selfWeight": 0,
+      "totalWeight": 32,
+    },
+    Frame {
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+      "file": "src/Main.hs:23:9-35",
+      "key": 13,
+      "line": undefined,
+      "name": "Main.main.maxN",
+      "selfWeight": 32,
+      "totalWeight": 32,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:22:9",
+      "key": 34,
+      "line": undefined,
+      "name": "Main.CAF:main_n",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:22:9-14",
+      "key": 12,
+      "line": undefined,
+      "name": "Main.main.n",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
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+      "file": "src/Main.hs:24:9-16",
+      "key": 32,
+      "line": undefined,
+      "name": "Main.CAF:main_stretchN",
+      "selfWeight": 0,
+      "totalWeight": 32,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:24:9-27",
+      "key": 14,
+      "line": undefined,
+      "name": "Main.main.stretchN",
+      "selfWeight": 32,
+      "totalWeight": 32,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:17:1-4",
+      "key": 36,
+      "line": undefined,
+      "name": "Main.CAF:minN",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:17:1-8",
+      "key": 9,
+      "line": undefined,
+      "name": "Main.minN",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 146,
+      "line": undefined,
+      "name": "GC.GC",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 147,
+      "line": undefined,
+      "name": "PROFILING.OVERHEAD_of",
+      "selfWeight": 2496,
+      "totalWeight": 2496,
+    },
+    Frame {
+      "col": undefined,
+      "file": undefined,
+      "key": 145,
+      "line": undefined,
+      "name": "SYSTEM.SYSTEM",
+      "selfWeight": 34736,
+      "totalWeight": 34736,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:35:26-54",
+      "key": 18,
+      "line": undefined,
+      "name": "Main.main.\\\\",
+      "selfWeight": 2224,
+      "totalWeight": 46672,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:19:1-56",
+      "key": 8,
+      "line": undefined,
+      "name": "Main.io",
+      "selfWeight": 67912,
+      "totalWeight": 67912,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:34:9-28",
+      "key": 17,
+      "line": undefined,
+      "name": "Main.main.vs",
+      "selfWeight": 0,
+      "totalWeight": 1891637344,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:(42,1)-(45,38)",
+      "key": 11,
+      "line": undefined,
+      "name": "Main.depth",
+      "selfWeight": 1120,
+      "totalWeight": 1891637344,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:(49,1)-(52,31)",
+      "key": 7,
+      "line": undefined,
+      "name": "Main.sumT",
+      "selfWeight": 0,
+      "totalWeight": 1891636224,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:51:9-31",
+      "key": 6,
+      "line": undefined,
+      "name": "Main.sumT.a",
+      "selfWeight": 1397760,
+      "totalWeight": 945818112,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:52:9-31",
+      "key": 5,
+      "line": undefined,
+      "name": "Main.sumT.b",
+      "selfWeight": 1397760,
+      "totalWeight": 945818112,
+    },
+    Frame {
+      "col": undefined,
+      "file": "src/Main.hs:45:9-38",
+      "key": 10,
+      "line": undefined,
+      "name": "Main.depth.n",
+      "selfWeight": 0,
+      "totalWeight": 0,
+    },
+  ],
+  "name": "binary-trees allocation",
+  "stacks": Array [
+    "MAIN.MAIN;GHC.Conc.Signal.CAF 640 B",
+    "MAIN.MAIN;GHC.IO.Encoding.CAF 2.70 KB",
+    "MAIN.MAIN;GHC.IO.Encoding.Iconv.CAF 200 B",
+    "MAIN.MAIN;GHC.IO.Handle.FD.CAF 33.89 KB",
+    "MAIN.MAIN;Text.Printf.CAF 528 B",
+    "MAIN.MAIN;Main.CAF:eta1_r6nI;Main.main;Main.check 2.00 MB",
+    "MAIN.MAIN;Main.CAF:eta1_r6nI;Main.main 32 B",
+    "MAIN.MAIN;Main.CAF:eta_r6nG 1.07 KB",
+    "MAIN.MAIN;Main.CAF:io1 1.84 KB",
+    "MAIN.MAIN;Main.CAF:lvl2_r6nH;Main.main;Main.main.long;Main.make 7.50 MB",
+    "MAIN.MAIN;Main.CAF:lvl2_r6nH;Main.main;Main.main.long 32 B",
+    "MAIN.MAIN;Main.CAF:lvl8_r6nP 520 B",
+    "MAIN.MAIN;Main.CAF:main1 16 B",
+    "MAIN.MAIN;Main.CAF:main11;Main.main;Main.main.c;Main.check 4.00 MB",
+    "MAIN.MAIN;Main.CAF:main11;Main.main;Main.main.c 32 B",
+    "MAIN.MAIN;Main.CAF:main12;Main.main;Main.main.c;Main.make 15.00 MB",
+    "MAIN.MAIN;Main.CAF:main12;Main.main;Main.main.c 32 B",
+    "MAIN.MAIN;Main.CAF:main7 880 B",
+    "MAIN.MAIN;Main.CAF:main_maxN;Main.main;Main.main.maxN 32 B",
+    "MAIN.MAIN;Main.CAF:main_stretchN;Main.main;Main.main.stretchN 32 B",
+    "MAIN.MAIN;PROFILING.OVERHEAD_of 2.44 KB",
+    "MAIN.MAIN;SYSTEM.SYSTEM 33.92 KB",
+    "MAIN.MAIN;Main.main;Main.main.\\\\;Main.io 43.41 KB",
+    "MAIN.MAIN;Main.main;Main.main.\\\\ 2.17 KB",
+    "MAIN.MAIN;Main.main;Main.io 22.91 KB",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.a;Main.check 190.67 MB",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.a;Main.make 710.00 MB",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.a 1.33 MB",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.b;Main.check 190.67 MB",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.b;Main.make 710.00 MB",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth;Main.sumT;Main.sumT.b 1.33 MB",
+    "MAIN.MAIN;Main.main;Main.main.vs;Main.depth 1.09 KB",
+    "MAIN.MAIN 648 B",
+  ],
+}
+`;
+
+exports[`importFromHaskell: indexToView 1`] = `0`;
+
+exports[`importFromHaskell: profileGroup.name 1`] = `"binary-trees"`;
@@ -11,3 +11,7 @@ test('importFromChromeTimeline', async () => {
 test('importFromChromeTimeline Chrome 69', async () => {
  await checkProfileSnapshot('./sample/profiles/Chrome/69/simple.json')
 })
+
+test('importFromChromeTimeline Workers Chrome 70', async () => {
+  await checkProfileSnapshot('./sample/profiles/Chrome/70/worker.json')
+})
@@ -1,5 +1,5 @@
-import {Profile, FrameInfo, CallTreeProfileBuilder} from '../lib/profile'
-import {getOrInsert, lastOf, sortBy} from '../lib/utils'
+import {Profile, FrameInfo, CallTreeProfileBuilder, ProfileGroup} from '../lib/profile'
+import {getOrInsert, lastOf, sortBy, itForEach} from '../lib/utils'
 import {TimeFormatter} from '../lib/value-formatters'

 // See: https://github.com/v8/v8/blob/master/src/inspector/js_protocol.json
@@ -15,6 +15,7 @@ interface TimelineEvent {
  tdur: number
  tts: number
  args: {[key: string]: any}
+  id?: string
 }

 interface PositionTickInfo {
@@ -61,33 +62,54 @@ export function isChromeTimeline(rawProfile: any): boolean {
  return true
 }

-export function importFromChromeTimeline(events: TimelineEvent[]): Profile {
+export function importFromChromeTimeline(events: TimelineEvent[], fileName: string): ProfileGroup {
  // It seems like sometimes Chrome timeline files contain multiple CpuProfiles?
  // For now, choose the first one in the list.

-  let cpuProfile: CPUProfile | null = null
+  const cpuProfileByID = new Map<string, CPUProfile>()
+
+  // Maps profile IDs (like "0x3") to pid/tid pairs formatted as `${pid}:${tid}`
+  const pidTidById = new Map<string, string>()
+
+  // Maps pid/tid pairs to thread names
+  const threadNameByPidTid = new Map<string, string>()

  // The events aren't necessarily recorded in chronological order. Sort them so
  // that they are.
  sortBy(events, e => e.ts)

+  const DEFAULT_ID = '(default id)'
+
  for (let event of events) {
-    if (event.name == 'CpuProfile') {
-      cpuProfile = event.args.data.cpuProfile as CPUProfile
+    if (event.name === 'CpuProfile') {
+      cpuProfileByID.set(event.id || DEFAULT_ID, event.args.data.cpuProfile as CPUProfile)
+
+      if (event.id) {
+        pidTidById.set(event.id, `${event.pid}:${event.tid}`)
+      }
    }

-    if (event.name == 'Profile') {
-      cpuProfile = {
+    if (event.name === 'Profile') {
+      cpuProfileByID.set(event.id || DEFAULT_ID, {
        startTime: 0,
        endTime: 0,
        nodes: [],
        samples: [],
        timeDeltas: [],
        ...event.args.data,
+      })
+
+      if (event.id) {
+        pidTidById.set(event.id, `${event.pid}:${event.tid}`)
      }
    }

-    if (event.name == 'ProfileChunk') {
+    if (event.name === 'thread_name') {
+      threadNameByPidTid.set(`${event.pid}:${event.tid}`, event.args.name)
+    }
+
+    if (event.name === 'ProfileChunk') {
+      const cpuProfile = cpuProfileByID.get(event.id || DEFAULT_ID)
      if (cpuProfile) {
        const chunk = event.args.data
        if (chunk.cpuProfile) {
@@ -108,13 +130,38 @@ export function importFromChromeTimeline(events: TimelineEvent[]): Profile {
          cpuProfile.endTime = chunk.endTime
        }
      } else {
-        console.log('Ignoring ProfileChunk when no Profile is active')
+        console.warn(
+          `Ignoring ProfileChunk for undeclared Profile with id ${event.id || DEFAULT_ID}`,
+        )
      }
    }
  }

-  if (cpuProfile) {
-    return importFromChromeCPUProfile(cpuProfile as CPUProfile)
+  if (cpuProfileByID.size > 0) {
+    const profiles: Profile[] = []
+    let indexToView = 0
+
+    itForEach(cpuProfileByID.keys(), profileId => {
+      let threadName: string | null = null
+      let pidTid = pidTidById.get(profileId)
+      if (pidTid) {
+        threadName = threadNameByPidTid.get(pidTid) || null
+        if (threadName) {
+        }
+      }
+      const profile = importFromChromeCPUProfile(cpuProfileByID.get(profileId)!)
+      if (threadName && cpuProfileByID.size > 1) {
+        profile.setName(`${fileName} - ${threadName}`)
+        if (threadName === 'CrRendererMain') {
+          indexToView = profiles.length
+        }
+      } else {
+        profile.setName(`${fileName}`)
+      }
+      profiles.push(profile)
+    })
+
+    return {name: fileName, indexToView, profiles}
  } else {
    throw new Error('Could not find CPU profile in Timeline')
  }
@@ -198,7 +245,8 @@ export function importFromChromeCPUProfile(chromeProfile: CPUProfile): Profile {
    } else {
      let timeDelta = chromeProfile.timeDeltas[i + 1]
      if (timeDelta < 0) {
-        console.warn('Substituting zero for unexpected time delta:', timeDelta, 'at index', i)
+        // This is super noisy, but can be helpful when debugging strange data
+        // console.warn('Substituting zero for unexpected time delta:', timeDelta, 'at index', i)
        timeDelta = 0
      }

@@ -0,0 +1,5 @@
+import {checkProfileSnapshot} from '../lib/test-utils'
+
+test('importFromHaskell', async () => {
+  await checkProfileSnapshot('./sample/profiles/haskell/simple.prof')
+})
@@ -0,0 +1,98 @@
+import {ProfileGroup, FrameInfo, CallTreeProfileBuilder} from '../lib/profile'
+import {TimeFormatter, ByteFormatter} from '../lib/value-formatters'
+
+// See https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/profiling.html#json-profile-format
+// for information on the GHC profiler JSON output format.
+
+interface CostCentre {
+  id: number
+  label: string
+  module: string
+  src_loc: string
+  is_caf: boolean
+}
+
+interface ProfileTree {
+  id: number
+  entries: number
+  alloc: number
+  ticks: number
+  children: ProfileTree[]
+}
+
+interface HaskellProfile {
+  program: string
+  arguments: string[]
+  rts_arguments: string[]
+  end_time: string
+  initial_capabilities: number
+  total_time: number
+  total_ticks: number
+  tick_interval: number
+  total_alloc: number
+  cost_centres: CostCentre[]
+  profile: ProfileTree
+}
+
+// The profiler already collapses recursion before output so using the JS stack here should be fine
+function addToProfile(
+  tree: ProfileTree,
+  startVal: number,
+  profile: CallTreeProfileBuilder,
+  infos: Map<number, FrameInfo>,
+  attribute: (tree: ProfileTree) => number,
+): number {
+  // If the expression never did anything we don't care about it
+  if (tree.ticks === 0 && tree.entries === 0 && tree.alloc === 0 && tree.children.length === 0)
+    return startVal
+
+  let curVal = startVal
+  let frameInfo = infos.get(tree.id)!
+
+  profile.enterFrame(frameInfo, curVal)
+
+  for (let child of tree.children) {
+    curVal = addToProfile(child, curVal, profile, infos, attribute)
+  }
+
+  curVal += attribute(tree)
+
+  profile.leaveFrame(frameInfo, curVal)
+
+  return curVal
+}
+
+export function importFromHaskell(haskellProfile: HaskellProfile): ProfileGroup {
+  const idToFrameInfo = new Map<number, FrameInfo>()
+  for (let centre of haskellProfile.cost_centres) {
+    const frameInfo: FrameInfo = {
+      key: centre.id,
+      name: `${centre.module}.${centre.label}`,
+    }
+
+    // Ignore things like <entire-module> and <no location info>
+    if (!centre.src_loc.startsWith('<')) {
+      // This also contains line and column information, but sometimes it contains ranges,
+      // and in varying formats, so it's a better experience just to leave it as is
+      frameInfo.file = centre.src_loc
+    }
+
+    idToFrameInfo.set(centre.id, frameInfo)
+  }
+
+  const timeProfile = new CallTreeProfileBuilder(haskellProfile.total_ticks)
+  addToProfile(haskellProfile.profile, 0, timeProfile, idToFrameInfo, tree => tree.ticks)
+  timeProfile.setValueFormatter(new TimeFormatter('milliseconds'))
+  timeProfile.setName(`${haskellProfile.program} time`)
+
+  const allocProfile = new CallTreeProfileBuilder(haskellProfile.total_ticks)
+  addToProfile(haskellProfile.profile, 0, allocProfile, idToFrameInfo, tree => tree.alloc)
+  allocProfile.setValueFormatter(new ByteFormatter())
+  allocProfile.setName(`${haskellProfile.program} allocation`)
+
+  return {
+    name: haskellProfile.program,
+    indexToView: 0,
+    profiles: [timeProfile.build(), allocProfile.build()],
+  }
+}
@@ -9,9 +9,11 @@ import {importFromFirefox} from './firefox'
 import {importSpeedscopeProfiles} from '../lib/file-format'
 import {importFromV8ProfLog} from './v8proflog'
 import {importFromLinuxPerf} from './linux-tools-perf'
+import {importFromHaskell} from './haskell'
 import {ProfileDataSource, TextProfileDataSource, MaybeCompressedDataReader} from './utils'
 import {importAsPprofProfile} from './pprof'
 import {decodeBase64} from '../lib/utils'
+import {importFromChromeHeapProfile} from './v8heapalloc'

 export async function importProfileGroupFromText(
  fileName: string,
@@ -87,7 +89,7 @@ async function _importProfileGroup(dataSource: ProfileDataSource): Promise<Profi
    return toGroup(importFromChromeCPUProfile(JSON.parse(contents)))
  } else if (fileName.endsWith('.chrome.json') || /Profile-\d{8}T\d{6}/.exec(fileName)) {
    console.log('Importing as Chrome Timeline')
-    return toGroup(importFromChromeTimeline(JSON.parse(contents)))
+    return importFromChromeTimeline(JSON.parse(contents), fileName)
  } else if (fileName.endsWith('.stackprof.json')) {
    console.log('Importing as stackprof profile')
    return toGroup(importFromStackprof(JSON.parse(contents)))
@@ -103,6 +105,9 @@ async function _importProfileGroup(dataSource: ProfileDataSource): Promise<Profi
  } else if (fileName.endsWith('.v8log.json')) {
    console.log('Importing as --prof-process v8 log')
    return toGroup(importFromV8ProfLog(JSON.parse(contents)))
+  } else if (fileName.endsWith('.heapprofile')) {
+    console.log('Importing as Chrome Heap Profile')
+    return toGroup(importFromChromeHeapProfile(JSON.parse(contents)))
  }

  // Second pass: Try to guess what file format it is based on structure
@@ -119,7 +124,7 @@ async function _importProfileGroup(dataSource: ProfileDataSource): Promise<Profi
      return toGroup(importFromFirefox(parsed))
    } else if (isChromeTimeline(parsed)) {
      console.log('Importing as Chrome CPU Profile')
-      return toGroup(importFromChromeTimeline(parsed))
+      return importFromChromeTimeline(parsed, fileName)
    } else if ('nodes' in parsed && 'samples' in parsed && 'timeDeltas' in parsed) {
      console.log('Importing as Chrome Timeline')
      return toGroup(importFromChromeCPUProfile(parsed))
@@ -129,6 +134,12 @@ async function _importProfileGroup(dataSource: ProfileDataSource): Promise<Profi
    } else if ('code' in parsed && 'functions' in parsed && 'ticks' in parsed) {
      console.log('Importing as --prof-process v8 log')
      return toGroup(importFromV8ProfLog(parsed))
+    } else if ('head' in parsed && 'selfSize' in parsed['head']) {
+      console.log('Importing as Chrome Heap Profile')
+      return toGroup(importFromChromeHeapProfile(JSON.parse(contents)))
+    } else if ('rts_arguments' in parsed && 'initial_capabilities' in parsed) {
+      console.log('Importing as Haskell GHC JSON Profile')
+      return importFromHaskell(parsed)
    }
  } else {
    // Format is not JSON
@@ -53,13 +53,18 @@ export class MaybeCompressedDataReader implements ProfileDataSource {
    const buffer = await this.readAsArrayBuffer()
    let ret: string = ''

-    // JavaScript strings are UTF-16 encoded, but we're reading data
-    // from disk that we're going to asusme is UTF-8 encoded.
-    const array = new Uint8Array(buffer)
-    for (let i = 0; i < array.length; i++) {
-      ret += String.fromCharCode(array[i])
+    if (typeof TextDecoder !== 'undefined') {
+      const decoder = new TextDecoder()
+      return decoder.decode(buffer)
+    } else {
+      // JavaScript strings are UTF-16 encoded, but we're reading data
+      // from disk that we're going to asusme is UTF-8 encoded.
+      const array = new Uint8Array(buffer)
+      for (let i = 0; i < array.length; i++) {
+        ret += String.fromCharCode(array[i])
+      }
+      return ret
    }
-    return ret
  }

  static fromFile(file: File): MaybeCompressedDataReader {
@@ -0,0 +1,9 @@
+import {checkProfileSnapshot} from '../lib/test-utils'
+
+test('importV8HeapAlloc from Chrome', async () => {
+  await checkProfileSnapshot('./sample/profiles/Chrome/69/Heap-20181005T144546.heapprofile')
+})
+
+test('importV8HeapAlloc from NodeJS', async () => {
+  await checkProfileSnapshot('./sample/profiles/node/10.11.0/Heap-20181003T105432.heapprofile')
+})
@@ -0,0 +1,109 @@
+import {Profile, FrameInfo, StackListProfileBuilder} from '../lib/profile'
+import {getOrInsert} from '../lib/utils'
+import {ByteFormatter} from '../lib/value-formatters'
+
+/**
+ * The V8 Heap Allocation profile is a way to represent heap allocation for each
+ * javascript function. The format is a simple tree where the weight of each node
+ * represent the memory allocated by the function and all its callee.
+ * You can find more information on how to get a profile there :
+ * https://developers.google.com/web/tools/chrome-devtools/memory-problems/#allocation-profile
+ * You need to scroll down to "Investigate memory allocation by function"
+ *
+ * Note that Node.JS can retrieve this kind of profile via the Inspector protocol.
+ */
+
+interface HeapProfileCallFrame {
+  columnNumber: number
+  functionName: string
+  lineNumber: number
+  scriptId: string
+  url: string
+}
+
+interface HeapProfileNode {
+  callFrame: HeapProfileCallFrame
+  selfSize: number
+  children: HeapProfileNode[]
+  id: number
+  parent?: number
+  totalSize: number
+}
+
+interface HeapProfile {
+  head: HeapProfileNode
+}
+
+const callFrameToFrameInfo = new Map<HeapProfileCallFrame, FrameInfo>()
+function frameInfoForCallFrame(callFrame: HeapProfileCallFrame) {
+  return getOrInsert(callFrameToFrameInfo, callFrame, callFrame => {
+    const name = callFrame.functionName || '(anonymous)'
+    const file = callFrame.url
+    const line = callFrame.lineNumber
+    const col = callFrame.columnNumber
+    return {
+      key: `${name}:${file}:${line}:${col}`,
+      name,
+      file,
+      line,
+      col,
+    }
+  })
+}
+
+export function importFromChromeHeapProfile(chromeProfile: HeapProfile): Profile {
+  const nodeById = new Map<number, HeapProfileNode>()
+  let currentId = 0
+  const computeId = (node: HeapProfileNode, parent?: HeapProfileNode) => {
+    node.id = currentId++
+    nodeById.set(node.id, node)
+    if (parent) {
+      node.parent = parent.id
+    }
+
+    node.children.forEach(children => computeId(children, node))
+  }
+  computeId(chromeProfile.head)
+
+  // Compute the total size
+  const computeTotalSize = (node: HeapProfileNode): number => {
+    if (node.children.length === 0) return node.selfSize || 0
+    const totalChild = node.children.reduce((total: number, children) => {
+      total += computeTotalSize(children)
+      return total
+    }, node.selfSize)
+    node.totalSize = totalChild
+    return totalChild
+  }
+  const total = computeTotalSize(chromeProfile.head)
+
+  // Compute all stacks by taking each last node and going upward
+  const stacks: HeapProfileNode[][] = []
+  for (let currentNode of nodeById.values()) {
+    let stack: HeapProfileNode[] = []
+    stack.push(currentNode)
+    // While we found a parent
+    while (true) {
+      if (currentNode.parent === undefined) break
+      const parent = nodeById.get(currentNode.parent)
+      if (parent === undefined) break
+      // Push the parent at the beginning of the stack
+      stack.unshift(parent)
+      currentNode = parent
+    }
+    stacks.push(stack)
+  }
+
+  const profile = new StackListProfileBuilder(total)
+
+  for (let stack of stacks) {
+    const lastFrame = stack[stack.length - 1]
+    profile.appendSampleWithWeight(
+      stack.map(frame => frameInfoForCallFrame(frame.callFrame)),
+      lastFrame.selfSize,
+    )
+  }
+
+  profile.setValueFormatter(new ByteFormatter())
+  return profile.build()
+}
@@ -33,6 +33,13 @@ async function importProfilesFromBase64(
  return (await importModule).importProfileGroupFromBase64(fileName, contents)
 }

+async function importProfilesFromArrayBuffer(
+  fileName: string,
+  contents: ArrayBuffer,
+): Promise<ProfileGroup | null> {
+  return (await importModule).importProfilesFromArrayBuffer(fileName, contents)
+}
+
 async function importProfilesFromFile(file: File): Promise<ProfileGroup | null> {
  return (await importModule).importProfilesFromFile(file)
 }
@@ -512,7 +519,7 @@ export class Application extends StatelessComponent<ApplicationProps> {
        if (filename.includes('/')) {
          filename = filename.slice(filename.lastIndexOf('/') + 1)
        }
-        return await importProfilesFromText(filename, await response.text())
+        return await importProfilesFromArrayBuffer(filename, await response.arrayBuffer())
      })
    } else if (this.props.hashParams.localProfilePath) {
      // There isn't good cross-browser support for XHR of local files, even from
@@ -660,15 +660,20 @@ export class FlamechartPanZoomView extends Component<FlamechartPanZoomViewProps,

    if (ev.ctrlKey || ev.shiftKey || ev.metaKey) return

+    // NOTE: We intentionally use ev.code rather than ev.key for
+    // WASD in order to have the keys retain the same layout even
+    // if the keyboard layout is not QWERTY.
+    //
+    // See: https://github.com/jlfwong/speedscope/pull/184
    if (ev.key === '0') {
      this.zoom(new Vec2(width / 2, height / 2), 1e9)
-    } else if (ev.key === 'ArrowRight' || ev.key === 'd') {
+    } else if (ev.key === 'ArrowRight' || ev.code === 'KeyD') {
      this.pan(new Vec2(100, 0))
-    } else if (ev.key === 'ArrowLeft' || ev.key === 'a') {
+    } else if (ev.key === 'ArrowLeft' || ev.code === 'KeyA') {
      this.pan(new Vec2(-100, 0))
-    } else if (ev.key === 'ArrowUp' || ev.key === 'w') {
+    } else if (ev.key === 'ArrowUp' || ev.code === 'KeyW') {
      this.pan(new Vec2(0, -100))
-    } else if (ev.key === 'ArrowDown' || ev.key === 's') {
+    } else if (ev.key === 'ArrowDown' || ev.code === 'KeyS') {
      this.pan(new Vec2(0, 100))
    } else if (ev.key === 'Escape') {
      this.props.onNodeSelect(null)
Author	SHA1	Message	Date
Jamie Wong	519847b489	1.3.2	2018-12-03 19:25:54 -08:00
Jamie Wong	6d4f3499da	Fix import of multithreaded Chrome profiles (#194 ) In #160, I wrote code which incorrectly assumed that at most one profile would be active at a time. It turns out this assumption is incorrect because of webworkers! This PR introduces a fix which correctly separates samples taken on the main thread from samples taken on worker threads, and allows viewing both in speedscope. Fixes #171	2018-12-03 19:21:59 -08:00
Jamie Wong	ad49dacb29	1.3.1	2018-11-08 10:05:52 -08:00
Jamie Wong	6562fec7a7	Use TextDecoder if available for converting from an ArrayBuffer for speed (#188 ) #165 introduced a performance regression by using a really inefficient method for converting from array buffers into string. This should ix it by using `TextDecoder` instead.	2018-11-08 10:01:05 -08:00
Jamie Wong	23d4042e04	1.3.0	2018-10-29 09:56:06 -07:00
Vincent Rischmann	9961ed8295	Make the wasd keymappings work on azerty keyboards (#184 ) Instead of using `key`, use `code` which according to [this](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/code) should work consistently for different layouts. I tested the modification on a french AZERTY keyboard and it works fine.	2018-10-29 09:43:10 -07:00
Tristan Hume	e35335fe3c	Haskell GHC JSON format support (fixes #182 ) (#183 ) Fixes #182 by adding support for importing the JSON profiling format created by GHC's built in profiling support when the executable is passed the `-pj` option. Produces a profile group containing both a time and allocation profile. Unfortunately, GHC doesn't provide the raw sample information to get the time view to be useful, so only left heavy and sandwich are useful. Includes a test profile, and I've also tested it on a more real large 2MB profile file in the UI and it works great. I also modified the Readme to link to a wiki page I'm unable to create, but that should have something like this content copy-pasted into it: # Importing from Haskell GHC provides built in profiling support that can export a JSON file. In order to do this you need to compile your executable with profiling support and then pass the `-pj` RTS flag to the executable. This will produce a `my-binary.prof` file in the current directory which you can import into speedscope. ## Using GHC See the [GHC manual page on profiling](https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/profiling.html) for more extensive information on the command line flags available. ``` $ ghc -prof -fprof-auto -rtsopts Main.hs $ ./Main +RTS -pj -RTS ``` ## Using Stack ### With executables ``` $ stack build --profile $ stack exec -- my-executable +RTS -pj -RTS ``` ### With tests ``` stack test --profile --test-arguments "+RTS -pj -RTS" ```	2018-10-29 09:37:11 -07:00
Florian Hermouet-Joscht	86f4ba636d	Use arrayBuffer instead of text for profileURL (#179 ) When using #profileURL, some binary characters cannot be read if we use `fetch text`. So I changed that to use `arrayBuffer`. Now we can read pprof protobuf files and normal JSON files instead of only text files.	2018-10-12 17:22:45 -07:00
Jamie Wong	0fe0c454d3	1.2.0	2018-10-08 09:49:15 -07:00
vmarchaud	4b292b2acf	Add import of v8 heap allocation profile (#170 ) This adds support for importing heap profiles from Chrome: https://developers.google.com/web/tools/chrome-devtools/memory-problems/#allocation-profile	2018-10-08 09:15:39 -07:00
Jamie Wong	d78d20e005	Update README.md	2018-09-26 13:38:36 -07:00