dom/base/NodeUbiReporting.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "NodeUbiReporting.h"
   8 #include "js/UbiNodeUtils.h"
   9 #include "nsWindowSizes.h"
  10
  11 using JS::ubi::EdgeRange;
  12 using JS::ubi::SimpleEdgeRange;
  13
  14 const char16_t JS::ubi::Concrete<mozilla::dom::Document>::concreteTypeName[] =
  15     u"Document";
  16 const char16_t JS::ubi::Concrete<nsIContent>::concreteTypeName[] =
  17     u"nsIContent";
  18 const char16_t JS::ubi::Concrete<mozilla::dom::Attr>::concreteTypeName[] =
  19     u"Attr";
  20
  21 void JS::ubi::Concrete<nsINode>::construct(void* storage, nsINode* ptr) {
  22   // nsINode is abstract, and all of its inherited instances have
  23   // an overridden function with instructions to construct ubi::Nodes.
  24   // We actually want to call that function and construct from those instances.
  25   ptr->ConstructUbiNode(storage);
  26 }
  27
  28 js::UniquePtr<EdgeRange> JS::ubi::Concrete<nsINode>::edges(
  29     JSContext* cx, bool wantNames) const {
  30   AutoSuppressGCAnalysis suppress;
  31   auto range = js::MakeUnique<SimpleEdgeRange>();
  32   if (!range) {
  33     return nullptr;
  34   }
  35   if (get().GetParent()) {
  36     char16_t* edgeName = nullptr;
  37     if (wantNames) {
  38       edgeName = NS_xstrdup(u"Parent Node");
  39     }
  40     if (!range->addEdge(JS::ubi::Edge(edgeName, get().GetParent()))) {
  41       return nullptr;
  42     }
  43   }
  44   for (auto curr = get().GetFirstChild(); curr; curr = curr->GetNextSibling()) {
  45     char16_t* edgeName = nullptr;
  46     if (wantNames) {
  47       edgeName = NS_xstrdup(u"Child Node");
  48     }
  49     if (!range->addEdge(JS::ubi::Edge(edgeName, curr))) {
  50       return nullptr;
  51     }
  52   }
  53   return js::UniquePtr<EdgeRange>(range.release());
  54 }
  55
  56 JS::ubi::Node::Size JS::ubi::Concrete<nsINode>::size(
  57     mozilla::MallocSizeOf mallocSizeOf) const {
  58   AutoSuppressGCAnalysis suppress;
  59   mozilla::SizeOfState sz(mallocSizeOf);
  60   nsWindowSizes wn(sz);
  61   size_t n = 0;
  62   get().AddSizeOfIncludingThis(wn, &n);
  63   return n;
  64 }
  65
  66 const char16_t* JS::ubi::Concrete<nsINode>::descriptiveTypeName() const {
  67   return get().NodeName().get();
  68 }
  69
  70 JS::ubi::Node::Size JS::ubi::Concrete<mozilla::dom::Document>::size(
  71     mozilla::MallocSizeOf mallocSizeOf) const {
  72   AutoSuppressGCAnalysis suppress;
  73   mozilla::SizeOfState sz(mallocSizeOf);
  74   nsWindowSizes wn(sz);
  75   getDoc().DocAddSizeOfIncludingThis(wn);
  76   return wn.getTotalSize();
  77 }