forked from mirrors/gecko-dev
5de7c2d4c9
This provides the necessary C++ glue between the Rust factory (and its FFI) and the JS layer that'll be using this, and also the necessary storage. Differential Revision: https://phabricator.services.mozilla.com/D143050
121 lines
4.1 KiB
C++
121 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* 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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#include "mozilla/dom/DOMJSClass.h"
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#include "mozilla/dom/GleanBinding.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/glean/bindings/Glean.h"
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#include "mozilla/glean/bindings/Category.h"
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#include "mozilla/glean/bindings/GleanJSMetricsLookup.h"
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#include "mozilla/glean/bindings/jog/jog_ffi_generated.h"
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#include "mozilla/glean/bindings/jog/JOG.h"
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#include "MainThreadUtils.h"
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#include "js/PropertyAndElement.h" // JS_DefineProperty
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namespace mozilla::glean {
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// Whether the runtime-registered metrics should be treated as comprehensive,
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// or additive. If comprehensive, a metric not registered at runtime is a
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// metric that doesn't exist. If additive, a metric not registered at runtime
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// may still exist if it was registered at compile time.
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// If we're supporting Artefact Builds, we treat them as comprehensive.
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// Threading: Must only be read or written to on the main thread.
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static bool gRuntimeMetricsComprehensive = false;
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(Glean)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(Glean)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(Glean)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Glean)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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JSObject* Glean::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
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return dom::GleanImpl_Binding::Wrap(aCx, this, aGivenProto);
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}
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// static
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bool Glean::DefineGlean(JSContext* aCx, JS::Handle<JSObject*> aGlobal) {
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(JS::GetClass(aGlobal)->flags & JSCLASS_DOM_GLOBAL,
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"Passed object is not a global object!");
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nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
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if (NS_WARN_IF(!global)) {
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return false;
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}
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JS::Rooted<JS::Value> glean(aCx);
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js::AssertSameCompartment(aCx, aGlobal);
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auto impl = MakeRefPtr<Glean>();
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if (!dom::GetOrCreateDOMReflector(aCx, impl.get(), &glean)) {
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return false;
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}
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return JS_DefineProperty(aCx, aGlobal, "Glean", glean, JSPROP_ENUMERATE);
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}
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already_AddRefed<Category> Glean::NamedGetter(const nsAString& aName,
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bool& aFound) {
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MOZ_ASSERT(NS_IsMainThread());
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#ifndef MOZILLA_OFFICIAL
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// We only entertain the idea this might be an artefact build if
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// !MOZILLA_OFFICAL to avoid doing _main thread I/O_ (dun dun dunnn) on
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// important builds.
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static bool sRuntimeRegistrarRan = false;
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if (!sRuntimeRegistrarRan) {
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sRuntimeRegistrarRan = true;
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// Run the runtime metrics registrar.
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gRuntimeMetricsComprehensive = jog::jog_runtime_registrar();
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}
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#endif // MOZILLA_OFFICIAL
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NS_ConvertUTF16toUTF8 categoryName(aName);
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if (JOG::HasCategory(categoryName)) {
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aFound = true;
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return MakeAndAddRef<Category>(std::move(categoryName));
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}
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if (gRuntimeMetricsComprehensive) {
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// This category might be built-in, but since the runtime metrics are
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// comprehensive, that just signals that the category was removed locally.
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aFound = false;
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return nullptr;
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}
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Maybe<uint32_t> categoryIdx = CategoryByNameLookup(categoryName);
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if (categoryIdx.isNothing()) {
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aFound = false;
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return nullptr;
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}
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aFound = true;
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nsDependentCString name(&gCategoryStringTable[categoryIdx.value()]);
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return MakeAndAddRef<Category>(std::move(name));
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}
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bool Glean::NameIsEnumerable(const nsAString& aName) { return false; }
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void Glean::GetSupportedNames(nsTArray<nsString>& aNames) {
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JOG::GetCategoryNames(aNames);
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if (!JOG::AreRuntimeMetricsComprehensive()) {
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for (category_entry_t entry : sCategoryByNameLookupEntries) {
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const char* categoryName = GetCategoryName(entry);
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aNames.AppendElement()->AssignASCII(categoryName);
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}
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}
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}
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// static
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void Glean::TestSetRuntimeMetricsComprehensive(bool aIsComprehensive) {
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MOZ_ASSERT(NS_IsMainThread());
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gRuntimeMetricsComprehensive = aIsComprehensive;
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}
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} // namespace mozilla::glean
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