collect-old-async-call-chains.js 6.52 KB
Newer Older
1 2 3 4
// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

5
let {session, contextGroup, Protocol} = InspectorTest.start('Checks that we drop old async call chains.');
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140

Protocol.Debugger.enable();
Protocol.Runtime.enable();
InspectorTest.runAsyncTestSuite([
  async function testInfrastructure() {
    Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});
    await setMaxAsyncTaskStacks(1024);
    runWithAsyncChainPromise(1, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(1024);
    runWithAsyncChainPromise(2, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(1024);
    runWithAsyncChainPromise(5, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(1024);
    runWithAsyncChainSetTimeout(1, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(1024);
    runWithAsyncChainSetTimeout(2, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(1024);
    runWithAsyncChainSetTimeout(5, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
  },

  async function testZeroLimit() {
    const limit = 0;
    Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainPromise(1, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainPromise(2, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainSetTimeout(1, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainSetTimeout(2, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
  },

  async function testOneLimit() {
    const limit = 1;
    Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainPromise(1, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainPromise(2, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainSetTimeout(1, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainSetTimeout(2, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
  },

  async function testTwoLimit() {
    const limit = 2;
    Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainPromise(1, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainPromise(2, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainPromise(3, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainSetTimeout(1, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainSetTimeout(2, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

    await setMaxAsyncTaskStacks(limit);
    runWithAsyncChainSetTimeout(3, 'console.trace(42)');
    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
  },

  async function testMoreThanTwoLimit() {
    for (let limit = 3; limit <= 7; ++limit) {
      Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});

      await setMaxAsyncTaskStacks(limit);
      runWithAsyncChainPromise(1, 'console.trace(42)');
      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

      await setMaxAsyncTaskStacks(limit);
      runWithAsyncChainPromise(2, 'console.trace(42)');
      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

      await setMaxAsyncTaskStacks(limit);
      runWithAsyncChainPromise(3, 'console.trace(42)');
      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

      await setMaxAsyncTaskStacks(limit);
      runWithAsyncChainSetTimeout(1, 'console.trace(42)');
      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

      await setMaxAsyncTaskStacks(limit);
      runWithAsyncChainSetTimeout(2, 'console.trace(42)');
      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());

      await setMaxAsyncTaskStacks(limit);
      runWithAsyncChainSetTimeout(3, 'console.trace(42)');
      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
    }
  },
]);

function runWithAsyncChainPromise(len, source) {
  InspectorTest.log(`Run expression '${source}' with async chain len: ${len}`);
141 142 143 144 145 146 147 148
  let asyncCall = `(function asyncCall(num) {
    if (num === 0) {
      ${source};
      return;
    }
    Promise.resolve().then(() => asyncCall(num - 1));
  })(${len})`;
  Protocol.Runtime.evaluate({expression: asyncCall});
149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
}

function runWithAsyncChainSetTimeout(len, source) {
  InspectorTest.log(`Run expression '${source}' with async chain len: ${len}`);
  let setTimeoutPrefix = '() => setTimeout(';
  let setTimeoutSuffix = ', 0)';
  Protocol.Runtime.evaluate({
    expression: `setTimeout(${setTimeoutPrefix.repeat(len - 1)}'${source}'${setTimeoutSuffix.repeat(len - 1)}, 0)`
  });
}

function dumpAsyncChainLength(message) {
  let stackTrace = message.params.asyncStackTrace || message.params.stackTrace.parent;
  let asyncChainCount = 0;
  while (stackTrace) {
    ++asyncChainCount;
    stackTrace = stackTrace.parent;
  }
  InspectorTest.log(`actual async chain len: ${asyncChainCount}\n`);
}

async function setMaxAsyncTaskStacks(max) {
171
  let expression = `inspector.setMaxAsyncTaskStacks(${max})`;
172 173 174
  InspectorTest.log(expression);
  await Protocol.Runtime.evaluate({expression});
}