| <!DOCTYPE html> |
| <!-- |
| Copyright 2015 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/tracing/base/base.html"> |
| |
| <script> |
| 'use strict'; |
| |
| tr.exportTo('tr.model', function() { |
| |
| /** |
| * HeapEntry represents a single value describing the state of the heap of an |
| * allocator in a single process. |
| * |
| * An entry specifies how much space (e.g. 19 MiB) was allocated in a |
| * particular context, which consists of a codepath (e.g. drawQuad <- draw <- |
| * MessageLoop::RunTask). |
| * |
| * @{constructor} |
| */ |
| function HeapEntry(heapDump, leafStackFrame, size) { |
| this.heapDump = heapDump; |
| |
| // The leaf stack frame of the associated backtrace (e.g. drawQuad for the |
| // drawQuad <- draw <- MessageLoop::RunTask backtrace). If undefined, the |
| // heap entry is a sum over all backtraces. On the other hand, an empty |
| // backtrace is represented by the root stack frame, which has an undefined |
| // name. |
| this.leafStackFrame = leafStackFrame; |
| |
| this.size = size; |
| } |
| |
| /** |
| * HeapDump represents a dump of the heap of an allocator in a single process |
| * at a particular timestamp. |
| * |
| * @{constructor} |
| */ |
| function HeapDump(processMemoryDump, allocatorName) { |
| this.processMemoryDump = processMemoryDump; |
| this.allocatorName = allocatorName; |
| this.entries = []; |
| } |
| |
| HeapDump.prototype = { |
| addEntry: function(leafStackFrame, size) { |
| var entry = new HeapEntry(this, leafStackFrame, size); |
| this.entries.push(entry); |
| return entry; |
| } |
| }; |
| |
| return { |
| HeapEntry: HeapEntry, |
| HeapDump: HeapDump |
| }; |
| }); |
| </script> |
