mirror of
https://github.com/classilla/tenfourfox.git
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32 lines
1.2 KiB
JavaScript
32 lines
1.2 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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function getInflatedStackLocations(thread, sample) {
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let stackTable = thread.stackTable;
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let frameTable = thread.frameTable;
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let stringTable = thread.stringTable;
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let SAMPLE_STACK_SLOT = thread.samples.schema.stack;
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let STACK_PREFIX_SLOT = stackTable.schema.prefix;
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let STACK_FRAME_SLOT = stackTable.schema.frame;
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let FRAME_LOCATION_SLOT = frameTable.schema.location;
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// Build the stack from the raw data and accumulate the locations in
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// an array.
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let stackIndex = sample[SAMPLE_STACK_SLOT];
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let locations = [];
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while (stackIndex !== null) {
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let stackEntry = stackTable.data[stackIndex];
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let frame = frameTable.data[stackEntry[STACK_FRAME_SLOT]];
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locations.push(stringTable[frame[FRAME_LOCATION_SLOT]]);
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stackIndex = stackEntry[STACK_PREFIX_SLOT];
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}
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// The profiler tree is inverted, so reverse the array.
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return locations.reverse();
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}
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