mirror of https://github.com/lukechilds/node.git
Fedor Indutny
12 years ago
19 changed files with 355 additions and 44 deletions
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// Copyright 2012 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax
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// Should not take a very long time (n^2 algorithms are bad)
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function ensureNotNegative(x) { |
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return Math.max(0, x | 0); |
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} |
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ensureNotNegative(1); |
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ensureNotNegative(2); |
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%OptimizeFunctionOnNextCall(ensureNotNegative); |
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var r = ensureNotNegative(-1); |
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assertEquals(0, r); |
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<!DOCTYPE html> |
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<!-- Copyright 2012 the V8 project authors. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are |
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met: |
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* Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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* Redistributions in binary form must reproduce the above |
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copyright notice, this list of conditions and the following |
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disclaimer in the documentation and/or other materials provided |
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with the distribution. |
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* Neither the name of Google Inc. nor the names of its |
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contributors may be used to endorse or promote products derived |
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from this software without specific prior written permission. |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --> |
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<html lang="en"> |
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<head> |
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<meta charset="utf-8"/> |
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<title>V8 Tick Processor</title> |
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<style type="text/css"> |
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body { |
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font-family: Verdana, Arial, Helvetica, sans-serif; |
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font-size: 10pt; |
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} |
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h4 { |
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margin-bottom: 0px; |
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} |
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p { |
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margin-top: 0px; |
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} |
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</style> |
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<script src="splaytree.js"></script> |
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<script src="codemap.js"></script> |
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<script src="csvparser.js"></script> |
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<script src="consarray.js"></script> |
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<script src="profile.js"></script> |
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<script src="profile_view.js"></script> |
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<script src="logreader.js"></script> |
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<script src="tickprocessor.js"></script> |
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<script type="text/javascript"> |
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var v8log_content; |
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var textout; |
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function load_logfile(evt) { |
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textout.value = ""; |
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var f = evt.target.files[0]; |
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if (f) { |
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var reader = new FileReader(); |
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reader.onload = function(event) { |
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v8log_content = event.target.result; |
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start_process(); |
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}; |
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reader.onerror = function(event) { |
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console.error("File could not be read! Code " + event.target.error.code); |
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}; |
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reader.readAsText(f); |
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} else { |
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alert("Failed to load file"); |
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} |
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} |
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function print(arg) { |
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textout.value+=arg+"\n"; |
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} |
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function start_process() { |
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ArgumentsProcessor.DEFAULTS = { |
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logFileName: 'v8.log', |
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snapshotLogFileName: null, |
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platform: 'unix', |
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stateFilter: null, |
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callGraphSize: 5, |
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ignoreUnknown: false, |
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separateIc: false, |
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targetRootFS: '', |
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nm: 'nm' |
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}; |
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var entriesProviders = { |
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'unix': UnixCppEntriesProvider, |
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'windows': WindowsCppEntriesProvider, |
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'mac': MacCppEntriesProvider |
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}; |
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var snapshotLogProcessor; // not used |
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var tickProcessor = new TickProcessor( |
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new (entriesProviders[ArgumentsProcessor.DEFAULTS.platform])( |
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ArgumentsProcessor.DEFAULTS.nm, |
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ArgumentsProcessor.DEFAULTS.targetRootFS), |
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ArgumentsProcessor.DEFAULTS.separateIc, |
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ArgumentsProcessor.DEFAULTS.callGraphSize, |
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ArgumentsProcessor.DEFAULTS.ignoreUnknown, |
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ArgumentsProcessor.DEFAULTS.stateFilter, |
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snapshotLogProcessor); |
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tickProcessor.processLogChunk(v8log_content); |
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tickProcessor.printStatistics(); |
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} |
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function Load() { |
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document.getElementById('fileinput').addEventListener( |
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'change', load_logfile, false); |
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textout = document.getElementById('textout'); |
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} |
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</script> |
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</head> |
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<body onLoad="Load()"> |
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<h3 style="margin-top: 2px;"> |
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Chrome V8 profiling log processor |
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</h3> |
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<p> |
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Process V8's profiling information log (sampling profiler tick information) |
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in your browser. Particularly useful if you don't have the V8 shell (d8) |
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at hand on your system. You still have to run Chrome with the appropriate |
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<a href="https://code.google.com/p/v8/wiki/ProfilingChromiumWithV8"> |
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command line flags</a> |
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to produce the profiling log. |
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</p> |
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<h4>Usage:</h4> |
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<p> |
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Click on the button and browse to the profiling log file (usually, v8.log). |
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Process will start automatically and the output will be visible in the below |
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text area. |
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</p> |
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<h4>Limitations and disclaimer:</h4> |
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<p> |
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This page offers a subset of the functionalities of the command-line tick |
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processor utility in the V8 repository. In particular, this page cannot |
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access the command-line utility that provides library symbol information, |
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hence the [C++] section of the output stays empty. Also consider that this |
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web-based tool is provided only for convenience and quick reference, you |
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should refer to the |
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<a href="https://code.google.com/p/v8/wiki/V8Profiler"> |
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command-line</a> |
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version for full output. |
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</p> |
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<p> |
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<input type="file" id="fileinput" /> |
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</p> |
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<p> |
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<textarea name="myTextArea" cols="120" rows="40" wrap="off" id="textout" |
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readonly="yes"></textarea> |
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</p> |
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<p style="font-style:italic;"> |
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Copyright the V8 Authors - Last change to this page: 12/12/2012 |
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</p> |
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</body> |
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</html> |
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