feffccca22
(1) --prof-cpp: Collects ticks like --prof, but ignores code creation events to reduce distortion (so all JS ticks will be "unaccounted"). Useful for profiling C++ code. (2) --timed-range flag for tick processor: Ignores ticks before the first and after the last call to Date.now(). Useful for focusing on the timed section of a test. Review URL: https://codereview.chromium.org/802333002 Cr-Commit-Position: refs/heads/master@{#26168}
82 lines
3.0 KiB
JavaScript
82 lines
3.0 KiB
JavaScript
// 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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// Tick Processor's code flow.
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function processArguments(args) {
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var processor = new ArgumentsProcessor(args);
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if (processor.parse()) {
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return processor.result();
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} else {
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processor.printUsageAndExit();
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}
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}
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function initSourceMapSupport() {
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// Pull dev tools source maps into our name space.
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SourceMap = WebInspector.SourceMap;
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// Overwrite the load function to load scripts synchronously.
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SourceMap.load = function(sourceMapURL) {
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var content = readFile(sourceMapURL);
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var sourceMapObject = (JSON.parse(content));
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return new SourceMap(sourceMapURL, sourceMapObject);
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};
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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 params = processArguments(arguments);
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var sourceMap = null;
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if (params.sourceMap) {
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initSourceMapSupport();
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sourceMap = SourceMap.load(params.sourceMap);
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}
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var snapshotLogProcessor;
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if (params.snapshotLogFileName) {
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snapshotLogProcessor = new SnapshotLogProcessor();
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snapshotLogProcessor.processLogFile(params.snapshotLogFileName);
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}
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var tickProcessor = new TickProcessor(
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new (entriesProviders[params.platform])(params.nm, params.targetRootFS),
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params.separateIc,
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params.callGraphSize,
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params.ignoreUnknown,
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params.stateFilter,
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snapshotLogProcessor,
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params.distortion,
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params.range,
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sourceMap,
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params.timedRange);
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tickProcessor.processLogFile(params.logFileName);
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tickProcessor.printStatistics();
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