Bug 1665373 - Stop using nsCountedRef in widget/gtk. r=karlt

Instead, use RefPtrTraits.

Differential Revision: https://phabricator.services.mozilla.com/D90397

widget/gtk/GRefPtr.h

@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 GRefPtr_h_
+#define GRefPtr_h_
+
+// Allows to use RefPtr<T> with various kinds of GObjects
+
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include "mozilla/RefPtr.h"
+
+namespace mozilla {
+
+template <typename T>
+struct GObjectRefPtrTraits {
+  static void AddRef(T* aObject) { g_object_ref(aObject); }
+  static void Release(T* aObject) { g_object_unref(aObject); }
+};
+
+template <>
+struct RefPtrTraits<GtkWidget> : public GObjectRefPtrTraits<GtkWidget> {};
+
+template <>
+struct RefPtrTraits<GdkDragContext>
+    : public GObjectRefPtrTraits<GdkDragContext> {};
+
+}  // namespace mozilla
+
+#endif

widget/gtk/ProcInfo.cpp

@@ -8,7 +8,6 @@
 #include "mozilla/Sprintf.h"
 #include "mozilla/Logging.h"
 #include "mozilla/ipc/GeckoChildProcessHost.h"
-#include "nsAutoRef.h"
 #include "nsLocalFile.h"
 #include "nsMemoryReporterManager.h"
 #include "nsNetCID.h"
@@ -21,12 +20,6 @@
 
 #define NANOPERSEC 1000000000.
 
-template <>
-class nsAutoRefTraits<DIR> : public nsPointerRefTraits<DIR> {
- public:
-  static void Release(DIR* dirHandle) { closedir(dirHandle); }
-};
-
 namespace mozilla {
 
 // StatReader can parse and tokenize a POSIX stat file.
@@ -253,14 +246,15 @@ RefPtr<ProcInfoPromise> GetProcInfo(nsTArray<ProcInfoRequest>&& aRequests) {
           // Let's look at the threads
           nsCString taskPath;
           taskPath.AppendPrintf("/proc/%u/task", request.pid);
-          nsAutoRef<DIR> dirHandle(opendir(taskPath.get()));
+          DIR* dirHandle = opendir(taskPath.get());
           if (!dirHandle) {
             // For some reason, we have no data on the threads for this process.
             // Most likely reason is that we have just lost a race condition and
             // the process is dead.
             // Let's stop here and ignore the entire process.
             continue;
           }
+          auto cleanup = mozilla::MakeScopeExit([&] { closedir(dirHandle); });
 
           // If we can't read some thread info, we ignore that thread.
           dirent* entry;

widget/gtk/nsDragService.cpp

@@ -28,6 +28,7 @@
 #include "mozilla/Services.h"
 #include "mozilla/ClearOnShutdown.h"
 #include "mozilla/PresShell.h"
+#include "GRefPtr.h"
 
 #include "gfxXlibSurface.h"
 #include "gfxContext.h"
@@ -1897,7 +1898,7 @@ gboolean nsDragService::RunScheduledTask() {
   // We still reply appropriately to indicate that the drop will or didn't
   // succeeed.
   mTargetWidget = mTargetWindow->GetMozContainerWidget();
-  mTargetDragContext.steal(mPendingDragContext);
+  mTargetDragContext = std::move(mPendingDragContext);
 #ifdef MOZ_WAYLAND
   mTargetWaylandDragContext = std::move(mPendingWaylandDragContext);
 #endif

widget/gtk/nsDragService.h

@@ -10,7 +10,6 @@
 #include "mozilla/RefPtr.h"
 #include "nsBaseDragService.h"
 #include "nsIObserver.h"
-#include "nsAutoRef.h"
 #include <gtk/gtk.h>
 
 class nsWindow;
@@ -22,29 +21,6 @@ class SourceSurface;
 }
 }  // namespace mozilla
 
-#ifndef HAVE_NSGOBJECTREFTRAITS
-#  define HAVE_NSGOBJECTREFTRAITS
-template <class T>
-class nsGObjectRefTraits : public nsPointerRefTraits<T> {
- public:
-  static void Release(T* aPtr) { g_object_unref(aPtr); }
-  static void AddRef(T* aPtr) { g_object_ref(aPtr); }
-};
-#endif
-
-#ifndef HAVE_NSAUTOREFTRAITS_GTKWIDGET
-#  define HAVE_NSAUTOREFTRAITS_GTKWIDGET
-template <>
-class nsAutoRefTraits<GtkWidget> : public nsGObjectRefTraits<GtkWidget> {};
-#endif
-
-#ifndef HAVE_NSAUTOREFTRAITS_GDKDRAGCONTEXT
-#  define HAVE_NSAUTOREFTRAITS_GDKDRAGCONTEXT
-template <>
-class nsAutoRefTraits<GdkDragContext>
-    : public nsGObjectRefTraits<GdkDragContext> {};
-#endif
-
 /**
  * Native GTK DragService wrapper
  */
@@ -148,7 +124,7 @@ class nsDragService final : public nsBaseDragService, public nsIObserver {
   // will be nullptr if the scheduled task is eDragTaskLeave.
   RefPtr<nsWindow> mPendingWindow;
   mozilla::LayoutDeviceIntPoint mPendingWindowPoint;
-  nsCountedRef<GdkDragContext> mPendingDragContext;
+  RefPtr<GdkDragContext> mPendingDragContext;
 #ifdef MOZ_WAYLAND
   RefPtr<nsWaylandDragContext> mPendingWaylandDragContext;
 #endif
@@ -161,14 +137,14 @@ class nsDragService final : public nsBaseDragService, public nsIObserver {
   mozilla::LayoutDeviceIntPoint mTargetWindowPoint;
   // mTargetWidget and mTargetDragContext are set only while dispatching
   // motion or drop events.  mTime records the corresponding timestamp.
-  nsCountedRef<GtkWidget> mTargetWidget;
-  nsCountedRef<GdkDragContext> mTargetDragContext;
+  RefPtr<GtkWidget> mTargetWidget;
+  RefPtr<GdkDragContext> mTargetDragContext;
 #ifdef MOZ_WAYLAND
   RefPtr<nsWaylandDragContext> mTargetWaylandDragContext;
 #endif
   // mTargetDragContextForRemote is set while waiting for a reply from
   // a child process.
-  nsCountedRef<GdkDragContext> mTargetDragContextForRemote;
+  RefPtr<GdkDragContext> mTargetDragContextForRemote;
 #ifdef MOZ_WAYLAND
   RefPtr<nsWaylandDragContext> mTargetWaylandDragContextForRemote;
 #endif