1 files changed, 171 insertions, 0 deletions
diff --git a/toolkit/components/perfmonitoring/PerformanceUtils.cpp b/toolkit/components/perfmonitoring/PerformanceUtils.cpp
new file mode 100644
index 0000000000..d119d4e7d0
--- /dev/null
+++ b/toolkit/components/perfmonitoring/PerformanceUtils.cpp
@@ -0,0 +1,171 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/PerformanceUtils.h"
+
+#include "mozilla/dom/DOMTypes.h"
+#include "mozilla/dom/DocGroup.h"
+#include "mozilla/dom/BrowsingContextGroup.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/WorkerDebugger.h"
+#include "mozilla/dom/WorkerDebuggerManager.h"
+
+#include "MediaDecoder.h"
+#include "jsfriendapi.h"
+#include "nsGlobalWindowOuter.h"
+#include "nsWindowSizes.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+namespace mozilla {
+
+nsTArray<RefPtr<PerformanceInfoPromise>> CollectPerformanceInfo() {
+  nsTArray<RefPtr<PerformanceInfoPromise>> promises;
+
+  // collecting ReportPerformanceInfo from all WorkerDebugger instances
+  RefPtr<mozilla::dom::WorkerDebuggerManager> wdm =
+      WorkerDebuggerManager::GetOrCreate();
+  if (NS_WARN_IF(!wdm)) {
+    return promises;
+  }
+
+  for (uint32_t i = 0; i < wdm->GetDebuggersLength(); i++) {
+    const RefPtr<WorkerDebugger> debugger = wdm->GetDebuggerAt(i);
+    promises.AppendElement(debugger->ReportPerformanceInfo());
+  }
+
+  nsTArray<RefPtr<BrowsingContextGroup>> groups;
+  BrowsingContextGroup::GetAllGroups(groups);
+
+  nsTArray<DocGroup*> docGroups;
+  for (auto& browsingContextGroup : groups) {
+    browsingContextGroup->GetDocGroups(docGroups);
+  }
+
+  for (DocGroup* docGroup : docGroups) {
+    promises.AppendElement(docGroup->ReportPerformanceInfo());
+  }
+
+  return promises;
+}
+
+void AddWindowTabSizes(nsGlobalWindowOuter* aWindow, nsTabSizes* aSizes) {
+  Document* document = aWindow->GetDocument();
+  if (document && document->GetCachedSizes(aSizes)) {
+    // We got a cached version
+    return;
+  }
+  // We measure the sizes on a fresh nsTabSizes instance
+  // because we want to cache the value and aSizes might
+  // already have some values from other windows.
+  nsTabSizes sizes;
+
+  // Measure the window.
+  SizeOfState state(moz_malloc_size_of);
+  nsWindowSizes windowSizes(state);
+  aWindow->AddSizeOfIncludingThis(windowSizes);
+  // Measure the inner window, if there is one.
+  nsGlobalWindowInner* inner = aWindow->GetCurrentInnerWindowInternal();
+  if (inner != nullptr) {
+    inner->AddSizeOfIncludingThis(windowSizes);
+  }
+  windowSizes.addToTabSizes(&sizes);
+  if (document) {
+    document->SetCachedSizes(&sizes);
+  }
+  aSizes->mDom += sizes.mDom;
+  aSizes->mStyle += sizes.mStyle;
+  aSizes->mOther += sizes.mOther;
+}
+
+nsresult GetTabSizes(BrowsingContext* aContext, nsTabSizes* aSizes) {
+  if (!aContext) {
+    return NS_OK;
+  }
+
+  // Add the window (and inner window) sizes. Might be cached.
+  nsGlobalWindowOuter* window =
+      nsGlobalWindowOuter::Cast(aContext->GetDOMWindow());
+  if (window) {
+    AddWindowTabSizes(window, aSizes);
+  }
+
+  // Measure this window's descendents.
+  for (const auto& child : aContext->Children()) {
+    MOZ_TRY(GetTabSizes(child, aSizes));
+  }
+  return NS_OK;
+}
+
+RefPtr<MemoryPromise> CollectMemoryInfo(
+    const RefPtr<DocGroup>& aDocGroup,
+    const RefPtr<AbstractThread>& aEventTarget) {
+  // Getting Dom sizes. -- XXX should we reimplement GetTabSizes to async here ?
+  nsTabSizes sizes;
+
+  for (const auto& document : *aDocGroup) {
+    nsGlobalWindowOuter* window =
+        document ? nsGlobalWindowOuter::Cast(document->GetWindow()) : nullptr;
+    if (window) {
+      AddWindowTabSizes(window, &sizes);
+    }
+  }
+
+  BrowsingContextGroup* group = aDocGroup->GetBrowsingContextGroup();
+  // Getting GC Heap Usage
+  uint64_t GCHeapUsage = 0;
+  JSObject* object = group->GetWrapper();
+  if (object != nullptr) {
+    GCHeapUsage = js::GetGCHeapUsageForObjectZone(object);
+  }
+
+  // Getting Media sizes.
+  return GetMediaMemorySizes()->Then(
+      aEventTarget, __func__,
+      [GCHeapUsage, sizes](const MediaMemoryInfo& media) {
+        return MemoryPromise::CreateAndResolve(
+            PerformanceMemoryInfo(media, sizes.mDom, sizes.mStyle, sizes.mOther,
+                                  GCHeapUsage),
+            __func__);
+      },
+      [](const nsresult rv) {
+        return MemoryPromise::CreateAndReject(rv, __func__);
+      });
+}
+
+RefPtr<MemoryPromise> CollectMemoryInfo(
+    const RefPtr<BrowsingContext>& aContext,
+    const RefPtr<AbstractThread>& aEventTarget) {
+  // Getting Dom sizes. -- XXX should we reimplement GetTabSizes to async here ?
+  nsTabSizes sizes;
+  nsresult rv = GetTabSizes(aContext, &sizes);
+  if (NS_FAILED(rv)) {
+    return MemoryPromise::CreateAndReject(rv, __func__);
+  }
+
+  // Getting GC Heap Usage
+  JSObject* obj = aContext->GetWrapper();
+  uint64_t GCHeapUsage = 0;
+  if (obj != nullptr) {
+    GCHeapUsage = js::GetGCHeapUsageForObjectZone(obj);
+  }
+
+  // Getting Media sizes.
+  return GetMediaMemorySizes()->Then(
+      aEventTarget, __func__,
+      [GCHeapUsage, sizes](const MediaMemoryInfo& media) {
+        return MemoryPromise::CreateAndResolve(
+            PerformanceMemoryInfo(media, sizes.mDom, sizes.mStyle, sizes.mOther,
+                                  GCHeapUsage),
+            __func__);
+      },
+      [](const nsresult rv) {
+        return MemoryPromise::CreateAndReject(rv, __func__);
+      });
+}
+
+}  // namespace mozilla