Bug 1419771 - Introduce DOMPrefs, a thread-safe access to preferences for DOM - part 1 - dump enabled, r=asuth

dom/base/DOMPrefs.cpp

@@ -0,0 +1,51 @@
+/* -*- 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 "DOMPrefs.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/Preferences.h"
+
+namespace mozilla {
+namespace dom {
+
+#define PREF(name, pref)                                             \
+  /* static */ bool                                                  \
+  DOMPrefs::name()                                                   \
+  {                                                                  \
+    static bool initialized = false;                                 \
+    static Atomic<bool> cachedValue;                                 \
+    if (!initialized) {                                              \
+      initialized = true;                                            \
+      Preferences::AddAtomicBoolVarCache(&cachedValue, pref, false); \
+    }                                                                \
+    return cachedValue;                                              \
+  }
+
+#if !(defined(DEBUG) || defined(MOZ_ENABLE_JS_DUMP))
+PREF(DumpEnabled, "browser.dom.window.dump.enabled")
+#else
+/* static */ bool
+DOMPrefs::DumpEnabled()
+{
+  return true;
+}
+#endif
+
+#undef PREF
+
+#define PREF_WEBIDL(name)                        \
+  /* static */ bool                              \
+  DOMPrefs::name(JSContext* aCx, JSObject* aObj) \
+  {                                              \
+    return DOMPrefs::name();                     \
+  }
+
+// It will be useful, eventually.
+
+#undef PREF_WEBIDL
+
+} // dom namespace
+} // mozilla namespace

dom/base/DOMPrefs.h

@@ -0,0 +1,23 @@
+/* -*- 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/. */
+
+#ifndef mozilla_dom_DOMPrefs_h
+#define mozilla_dom_DOMPrefs_h
+
+namespace mozilla {
+namespace dom {
+
+class DOMPrefs final
+{
+public:
+  // Returns true if the browser.dom.window.dump.enabled pref is set.
+  static bool DumpEnabled();
+};
+
+} // dom namespace
+} // mozilla namespace
+
+#endif // mozilla_dom_DOMPrefs_h

dom/base/moz.build

@@ -172,6 +172,7 @@ EXPORTS.mozilla.dom += [
     'DOMMatrix.h',
     'DOMParser.h',
     'DOMPoint.h',
+    'DOMPrefs.h',
     'DOMQuad.h',
     'DOMRect.h',
     'DOMRequest.h',
@@ -250,6 +251,7 @@ UNIFIED_SOURCES += [
     'DOMMatrix.cpp',
     'DOMParser.cpp',
     'DOMPoint.cpp',
+    'DOMPrefs.cpp',
     'DOMQuad.cpp',
     'DOMRect.cpp',
     'DOMRequest.cpp',

dom/base/nsContentUtils.cpp

@@ -334,10 +334,6 @@ nsIParser* nsContentUtils::sXMLFragmentParser = nullptr;
 nsIFragmentContentSink* nsContentUtils::sXMLFragmentSink = nullptr;
 bool nsContentUtils::sFragmentParsingActive = false;
 
-#if !(defined(DEBUG) || defined(MOZ_ENABLE_JS_DUMP))
-bool nsContentUtils::sDOMWindowDumpEnabled;
-#endif
-
 bool nsContentUtils::sDoNotTrackEnabled = false;
 
 mozilla::LazyLogModule nsContentUtils::sDOMDumpLog("Dump");
@@ -694,11 +690,6 @@ nsContentUtils::Init()
                                "network.cookie.cookieBehavior",
                                nsICookieService::BEHAVIOR_ACCEPT);
 
-#if !(defined(DEBUG) || defined(MOZ_ENABLE_JS_DUMP))
-  Preferences::AddBoolVarCache(&sDOMWindowDumpEnabled,
-                               "browser.dom.window.dump.enabled");
-#endif
-
   Preferences::AddBoolVarCache(&sDoNotTrackEnabled,
                                "privacy.donottrackheader.enabled", false);
 
@@ -7586,19 +7577,6 @@ nsContentUtils::IsAllowedNonCorsContentType(const nsACString& aHeaderValue)
          contentType.LowerCaseEqualsLiteral("multipart/form-data");
 }
 
-bool
-nsContentUtils::DOMWindowDumpEnabled()
-{
-#if !(defined(DEBUG) || defined(MOZ_ENABLE_JS_DUMP))
-  // In optimized builds we check a pref that controls if we should
-  // enable output from dump() or not, in debug builds it's always
-  // enabled.
-  return nsContentUtils::sDOMWindowDumpEnabled;
-#else
-  return true;
-#endif
-}
-
 bool
 nsContentUtils::DoNotTrackEnabled()
 {

dom/base/nsContentUtils.h

@@ -2695,11 +2695,6 @@ public:
    */
   static mozilla::HTMLEditor* GetHTMLEditor(nsPresContext* aPresContext);
 
-  /**
-   * Returns true if the browser.dom.window.dump.enabled pref is set.
-   */
-  static bool DOMWindowDumpEnabled();
-
   /**
    * Returns true if the privacy.donottrackheader.enabled pref is set.
    */
@@ -3472,9 +3467,6 @@ private:
   // bytecode out of the nsCacheInfoChannel.
   static nsCString* sJSBytecodeMimeType;
 
-#if !(defined(DEBUG) || defined(MOZ_ENABLE_JS_DUMP))
-  static bool sDOMWindowDumpEnabled;
-#endif
   static bool sDoNotTrackEnabled;
   static mozilla::LazyLogModule sDOMDumpLog;
 

dom/base/nsFrameMessageManager.cpp

@@ -36,6 +36,7 @@
 #include "mozilla/Preferences.h"
 #include "mozilla/ScriptPreloader.h"
 #include "mozilla/Telemetry.h"
+#include "mozilla/dom/DOMPrefs.h"
 #include "mozilla/dom/File.h"
 #include "mozilla/dom/MessagePort.h"
 #include "mozilla/dom/ContentParent.h"
@@ -805,7 +806,7 @@ nsFrameMessageManager::ReleaseCachedProcesses()
 NS_IMETHODIMP
 nsFrameMessageManager::Dump(const nsAString& aStr)
 {
-  if (!nsContentUtils::DOMWindowDumpEnabled()) {
+  if (!DOMPrefs::DumpEnabled()) {
     return NS_OK;
   }
 

dom/base/nsGlobalWindowInner.cpp

@@ -17,6 +17,7 @@
 #include "nsHistory.h"
 #include "nsDOMNavigationTiming.h"
 #include "nsIDOMStorageManager.h"
+#include "mozilla/dom/DOMPrefs.h"
 #include "mozilla/dom/LocalStorage.h"
 #include "mozilla/dom/Storage.h"
 #include "mozilla/dom/IdleRequest.h"
@@ -3520,7 +3521,7 @@ nsGlobalWindowInner::GetFullScreen()
 void
 nsGlobalWindowInner::Dump(const nsAString& aStr)
 {
-  if (!nsContentUtils::DOMWindowDumpEnabled()) {
+  if (!DOMPrefs::DumpEnabled()) {
     return;
   }
 

dom/workers/WorkerPrefs.h

@@ -21,9 +21,6 @@
 //   * First argument is the name of the pref.
 //   * The name of the function that updates the new value of a pref.
 
-#if !(defined(DEBUG) || defined(MOZ_ENABLE_JS_DUMP))
-WORKER_SIMPLE_PREF("browser.dom.window.dump.enabled", DumpEnabled, DUMP)
-#endif
 WORKER_SIMPLE_PREF("canvas.imagebitmap_extensions.enabled", ImageBitmapExtensionsEnabled, IMAGEBITMAP_EXTENSIONS_ENABLED)
 WORKER_SIMPLE_PREF("dom.caches.enabled", DOMCachesEnabled, DOM_CACHES)
 WORKER_SIMPLE_PREF("dom.caches.testing.enabled", DOMCachesTestingEnabled, DOM_CACHES_TESTING)

dom/workers/WorkerScope.cpp

@@ -12,6 +12,7 @@
 #include "mozilla/dom/Clients.h"
 #include "mozilla/dom/Console.h"
 #include "mozilla/dom/DedicatedWorkerGlobalScopeBinding.h"
+#include "mozilla/dom/DOMPrefs.h"
 #include "mozilla/dom/Fetch.h"
 #include "mozilla/dom/FunctionBinding.h"
 #include "mozilla/dom/IDBFactory.h"
@@ -371,7 +372,7 @@ WorkerGlobalScope::Dump(const Optional<nsAString>& aString) const
   }
 
 #if !(defined(DEBUG) || defined(MOZ_ENABLE_JS_DUMP))
-  if (!mWorkerPrivate->DumpEnabled()) {
+  if (!DOMPrefs::DumpEnabled()) {
     return;
   }
 #endif

dom/worklet/WorkletGlobalScope.cpp

@@ -7,7 +7,7 @@
 #include "WorkletGlobalScope.h"
 #include "mozilla/dom/WorkletGlobalScopeBinding.h"
 #include "mozilla/dom/Console.h"
-#include "nsContentUtils.h"
+#include "mozilla/dom/DOMPrefs.h"
 
 namespace mozilla {
 namespace dom {
@@ -71,7 +71,7 @@ WorkletGlobalScope::GetConsole(ErrorResult& aRv)
 void
 WorkletGlobalScope::Dump(const Optional<nsAString>& aString) const
 {
-  if (!nsContentUtils::DOMWindowDumpEnabled()) {
+  if (!DOMPrefs::DumpEnabled()) {
     return;
   }
 

js/xpconnect/loader/mozJSComponentLoader.cpp

@@ -50,6 +50,7 @@
 #include "mozilla/MacroForEach.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/ScriptPreloader.h"
+#include "mozilla/dom/DOMPrefs.h"
 #include "mozilla/dom/ScriptSettings.h"
 #include "mozilla/UniquePtrExtensions.h"
 #include "mozilla/Unused.h"
@@ -88,7 +89,7 @@ static LazyLogModule gJSCLLog("JSComponentLoader");
 static bool
 Dump(JSContext* cx, unsigned argc, Value* vp)
 {
-    if (!nsContentUtils::DOMWindowDumpEnabled()) {
+    if (!mozilla::dom::DOMPrefs::DumpEnabled()) {
         return true;
     }
 

js/xpconnect/src/Sandbox.cpp

@@ -32,6 +32,7 @@
 #include "mozilla/dom/cache/CacheStorage.h"
 #include "mozilla/dom/CSSBinding.h"
 #include "mozilla/dom/DirectoryBinding.h"
+#include "mozilla/dom/DOMPrefs.h"
 #include "mozilla/dom/IndexedDatabaseManager.h"
 #include "mozilla/dom/Fetch.h"
 #include "mozilla/dom/FileBinding.h"
@@ -114,7 +115,7 @@ xpc::NewSandboxConstructor()
 static bool
 SandboxDump(JSContext* cx, unsigned argc, Value* vp)
 {
-    if (!nsContentUtils::DOMWindowDumpEnabled()) {
+    if (!DOMPrefs::DumpEnabled()) {
         return true;
     }
 

js/xpconnect/src/XPCWrappedJSClass.cpp

@@ -9,7 +9,6 @@
 #include "xpcprivate.h"
 #include "jsprf.h"
 #include "nsArrayEnumerator.h"
-#include "nsContentUtils.h"
 #include "nsINamed.h"
 #include "nsIScriptError.h"
 #include "nsWrapperCache.h"
@@ -20,6 +19,7 @@
 #include "mozilla/dom/BindingUtils.h"
 #include "mozilla/dom/DOMException.h"
 #include "mozilla/dom/DOMExceptionBinding.h"
+#include "mozilla/dom/DOMPrefs.h"
 #include "mozilla/jsipc/CrossProcessObjectWrappers.h"
 
 #include "jsapi.h"
@@ -948,7 +948,7 @@ nsXPCWrappedJSClass::CheckForException(XPCCallContext & ccx,
             }
 
             if (reportable) {
-                if (nsContentUtils::DOMWindowDumpEnabled()) {
+                if (DOMPrefs::DumpEnabled()) {
                     static const char line[] =
                         "************************************************************\n";
                     static const char preamble[] =

js/xpconnect/src/nsXPConnect.cpp

@@ -23,6 +23,7 @@
 
 #include "mozilla/dom/BindingUtils.h"
 #include "mozilla/dom/DOMException.h"
+#include "mozilla/dom/DOMPrefs.h"
 #include "mozilla/dom/Exceptions.h"
 #include "mozilla/dom/Promise.h"
 
@@ -269,7 +270,7 @@ xpc::ErrorBase::AppendErrorDetailsTo(nsCString& error)
 void
 xpc::ErrorNote::LogToStderr()
 {
-    if (!nsContentUtils::DOMWindowDumpEnabled())
+    if (!DOMPrefs::DumpEnabled())
         return;
 
     nsAutoCString error;
@@ -283,7 +284,7 @@ xpc::ErrorNote::LogToStderr()
 void
 xpc::ErrorReport::LogToStderr()
 {
-    if (!nsContentUtils::DOMWindowDumpEnabled())
+    if (!DOMPrefs::DumpEnabled())
         return;
 
     nsAutoCString error;