37d3972429
As this is only needed for internal profiling (not for DevTools), the following approach had been chosen: - during snapshot creation, positions of serialized objects inside a snapshot are logged; - then during V8 initialization, positions of deserealized objects are logged; - those positions are used for retrieving code objects names from snapshot creation log, which needs to be supplied to tick processor script. Positions logging is controlled with the new flag: --log_snapshot_positions. This flag is turned off by default, and this adds no startup penalty. To plug this fix to Golem, the following actions are needed: - logs created using 'mksnapshot' need to be stored along with VM images; - tick processor script needs to be run with '--snapshot-log=...' cmdline argument. BUG=571 Review URL: http://codereview.chromium.org/551062 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3635 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
60 lines
2.4 KiB
JavaScript
60 lines
2.4 KiB
JavaScript
// Copyright 2009 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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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 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),
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params.separateIc,
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params.ignoreUnknown,
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params.stateFilter,
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snapshotLogProcessor);
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tickProcessor.processLogFile(params.logFileName);
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tickProcessor.printStatistics();
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