v8/test/inspector/cpu-profiler/coverage-block.js
Ulan Degenbaev d1070e417f [inspector] Make collectGarbage of HeapProfiler precise
Instead of forcing GC right away, the function now post a task and
performance GC from the task with an empty stack to avoid false positive
pointers in conservative stack scanning.

Bug: chromium:1098187
Change-Id: I88864845a1e395056c5d5f6e867ad774b87dbb6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2307217
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69444}
2020-08-18 07:24:14 +00:00

292 lines
11 KiB
JavaScript

// 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.
// Flags: --allow-natives-syntax --no-always-opt --opt
// Flags: --no-stress-flush-bytecode
// Flags: --no-stress-incremental-marking
var source =
`
function fib(x) {
if (x < 2) return 1;
return fib(x-1) + fib(x-2);
}
function is_optimized(f) {
return (%GetOptimizationStatus(f) & 16) ? "optimized" : "unoptimized";
}
(function iife() {
return 1;
})();
fib(5);
`;
var break_source =
`
function g() {
debugger;
}
function f(x) {
if (x == 0) g();
else f(x - 1);
}
function h() {
g();
}
f(3);
`;
var nested =
`
var f = (function outer() {
function nested_0() {
return function nested_1() {
return function nested_2() {
return function nested_3() {}
}
}
}
function nested_4() {}
return nested_0();
})();
f()()();
`;
let {session, contextGroup, Protocol} = InspectorTest.start("Test collecting code coverage data with Profiler.collectCoverage.");
function ClearAndGC() {
return Protocol.Runtime.evaluate({ expression: "fib = g = f = h = is_optimized = null;" })
.then(GC);
}
function GC() {
return Protocol.HeapProfiler.collectGarbage();
}
function LogSorted(message) {
message.result.result.sort((a, b) => parseInt(a.scriptId) - parseInt(b.scriptId));
return InspectorTest.logMessage(message);
}
InspectorTest.runTestSuite([
function testPreciseCountBaseline(next)
{
Protocol.Runtime.enable()
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(GC)
.then(Protocol.Profiler.enable)
.then(() => Protocol.Profiler.startPreciseCoverage({callCount: true, detailed: true}))
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
function testPreciseCountCoverage(next)
{
Protocol.Runtime.enable()
.then(Protocol.Profiler.enable)
.then(() => Protocol.Profiler.startPreciseCoverage({callCount: true, detailed: true}))
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(ClearAndGC)
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
function testPreciseCountCoverageIncremental(next)
{
Protocol.Runtime.enable()
.then(Protocol.Profiler.enable)
.then(() => Protocol.Profiler.startPreciseCoverage({callCount: true, detailed: true}))
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(() => Protocol.Runtime.evaluate({ expression: "is_optimized(fib)" }))
.then(message => InspectorTest.logMessage(message))
.then(() => Protocol.Runtime.evaluate({ expression: "fib(20)" }))
.then(message => InspectorTest.logMessage(message))
.then(() => Protocol.Runtime.evaluate({ expression: "is_optimized(fib)" }))
.then(message => InspectorTest.logMessage(message))
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
function testPreciseCoverageFail(next)
{
Protocol.Runtime.enable()
.then(Protocol.Profiler.enable)
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(ClearAndGC)
.then(Protocol.Profiler.takePreciseCoverage)
.then(InspectorTest.logMessage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
function testBestEffortCoverage(next)
{
Protocol.Runtime.enable()
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(ClearAndGC)
.then(Protocol.Profiler.getBestEffortCoverage)
.then(LogSorted)
.then(Protocol.Profiler.getBestEffortCoverage)
.then(LogSorted)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
function testBestEffortCoverageWithPreciseBinaryEnabled(next)
{
Protocol.Runtime.enable()
.then(Protocol.Profiler.enable)
.then(() => Protocol.Profiler.startPreciseCoverage({detailed: true}))
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(ClearAndGC)
.then(Protocol.Profiler.getBestEffortCoverage)
.then(LogSorted)
.then(Protocol.Profiler.getBestEffortCoverage)
.then(LogSorted)
.then(ClearAndGC)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
function testBestEffortCoverageWithPreciseCountEnabled(next)
{
Protocol.Runtime.enable()
.then(Protocol.Profiler.enable)
.then(() => Protocol.Profiler.startPreciseCoverage({callCount: true, detailed: true}))
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(ClearAndGC)
.then(Protocol.Profiler.getBestEffortCoverage)
.then(LogSorted)
.then(Protocol.Profiler.getBestEffortCoverage)
.then(LogSorted)
.then(ClearAndGC)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
function testEnablePreciseCountCoverageAtPause(next)
{
function handleDebuggerPause() {
Protocol.Profiler.enable()
.then(() => Protocol.Profiler.startPreciseCoverage({callCount: true, detailed: true}))
.then(Protocol.Debugger.resume)
}
Protocol.Debugger.enable();
Protocol.Debugger.oncePaused().then(handleDebuggerPause);
Protocol.Runtime.enable()
.then(() => Protocol.Runtime.compileScript({ expression: break_source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(ClearAndGC)
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(ClearAndGC)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(Protocol.Debugger.disable)
.then(ClearAndGC)
.then(next);
},
function testPreciseBinaryCoverage(next)
{
Protocol.Runtime.enable()
.then(Protocol.Profiler.enable)
.then(() => Protocol.Profiler.startPreciseCoverage({detailed: true}))
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(() => Protocol.Runtime.evaluate({ expression: "is_optimized(fib)" }))
.then(message => InspectorTest.logMessage(message))
.then(() => Protocol.Runtime.evaluate({ expression: "fib(20)" }))
.then(message => InspectorTest.logMessage(message))
.then(() => Protocol.Runtime.evaluate({ expression: "is_optimized(fib)" }))
.then(message => InspectorTest.logMessage(message))
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
function testPreciseEmptyScriptCoverageEntries(next)
{
// Enabling the debugger holds onto script objects even though its
// functions can be garbage collected. We would get empty ScriptCoverage
// entires unless we remove them.
Protocol.Debugger.enable()
.then(Protocol.Runtime.enable)
.then(() => Protocol.Runtime.compileScript({ expression: source, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(ClearAndGC)
.then(Protocol.Profiler.enable)
.then(() => Protocol.Profiler.startPreciseCoverage({detailed: true}))
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(Protocol.Debugger.disable)
.then(ClearAndGC)
.then(next);
},
function testPreciseCountCoveragePartial(next)
{
Protocol.Runtime.enable()
.then(Protocol.Profiler.enable)
.then(() => Protocol.Profiler.startPreciseCoverage({callCount: true, detailed: true}))
.then(() => Protocol.Runtime.compileScript({ expression: nested, sourceURL: arguments.callee.name, persistScript: true }))
.then((result) => Protocol.Runtime.runScript({ scriptId: result.result.scriptId }))
.then(InspectorTest.logMessage)
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(() => Protocol.Runtime.evaluate({ expression: "f()" }))
.then(Protocol.Profiler.takePreciseCoverage)
.then(LogSorted)
.then(Protocol.Profiler.stopPreciseCoverage)
.then(Protocol.Profiler.disable)
.then(Protocol.Runtime.disable)
.then(ClearAndGC)
.then(next);
},
]);