1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "content/shell/renderer/leak_detector.h" 6 7 #include "base/json/json_writer.h" 8 #include "base/logging.h" 9 #include "base/values.h" 10 #include "content/shell/renderer/webkit_test_runner.h" 11 #include "third_party/WebKit/public/web/WebLeakDetector.h" 12 13 using blink::WebLeakDetector; 14 15 namespace content { 16 17 // The initial states of the DOM objects at about:blank. The four nodes are a 18 // Document, a HTML, a HEAD and a BODY. 19 // 20 // TODO(hajimehoshi): Now these are hard-corded. If we add target to count like 21 // RefCoutned objects whose initial state is diffcult to estimate, we stop using 22 // hard-coded values. Instead, we need to load about:blank ahead of the layout 23 // tests actually and initialize LeakDetector by the got values. 24 const int kInitialNumberOfLiveDocuments = 1; 25 const int kInitialNumberOfLiveNodes = 4; 26 27 LeakDetector::LeakDetector(WebKitTestRunner* test_runner) 28 : test_runner_(test_runner), 29 web_leak_detector_(blink::WebLeakDetector::create(this)) { 30 previous_result_.numberOfLiveDocuments = kInitialNumberOfLiveDocuments; 31 previous_result_.numberOfLiveNodes = kInitialNumberOfLiveNodes; 32 } 33 34 LeakDetector::~LeakDetector() { 35 } 36 37 void LeakDetector::TryLeakDetection(blink::WebLocalFrame* frame) { 38 web_leak_detector_->collectGarbageAndGetDOMCounts(frame); 39 } 40 41 void LeakDetector::onLeakDetectionComplete( 42 const WebLeakDetectorClient::Result& result) { 43 LeakDetectionResult report; 44 report.leaked = 45 (previous_result_.numberOfLiveDocuments < result.numberOfLiveDocuments || 46 previous_result_.numberOfLiveNodes < result.numberOfLiveNodes); 47 48 if (report.leaked) { 49 base::DictionaryValue detail; 50 base::ListValue* list = new base::ListValue(); 51 list->AppendInteger(previous_result_.numberOfLiveDocuments); 52 list->AppendInteger(result.numberOfLiveDocuments); 53 detail.Set("numberOfLiveDocuments", list); 54 55 list = new base::ListValue(); 56 list->AppendInteger(previous_result_.numberOfLiveNodes); 57 list->AppendInteger(result.numberOfLiveNodes); 58 detail.Set("numberOfLiveNodes", list); 59 60 std::string detail_str; 61 base::JSONWriter::Write(&detail, &detail_str); 62 report.detail = detail_str; 63 } 64 65 previous_result_ = result; 66 test_runner_->ReportLeakDetectionResult(report); 67 } 68 69 } // namespace content 70