ungoogled-chromium-xdg-aur/free-the-X11-pixmap-in-the-NativePixmapEGLX11Bind.patch

From 42d57d016f5fb6d2a1a354743b9be911c1be87e8 Mon Sep 17 00:00:00 2001
From: Jianhui Dai <jianhui.j.dai@intel.com>
Date: Fri, 22 Sep 2023 21:30:04 +0000
Subject: [PATCH] [GL] Free the X11 pixmap in the NativePixmapEGLX11Binding
 destructor

This CL frees the X11 pixmap in the NativePixmapEGLX11Binding destructor
to prevent a memory leak in the X server.

Bug: 1467689
Change-Id: Id4cba30825417db52176f9165db34d7234a05a05
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4886249
Reviewed-by: Ted (Chromium) Meyer <tmathmeyer@chromium.org>
Commit-Queue: Ted (Chromium) Meyer <tmathmeyer@chromium.org>
Reviewed-by: Maksim Sisov <msisov@igalia.com>
Cr-Commit-Position: refs/heads/main@{#1200486}
---
 .../platform/x11/native_pixmap_egl_x11_binding.cc    | 12 +++++++++---
 .../platform/x11/native_pixmap_egl_x11_binding.h     |  2 ++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/ui/ozone/platform/x11/native_pixmap_egl_x11_binding.cc b/ui/ozone/platform/x11/native_pixmap_egl_x11_binding.cc
index 46a2d3274b9..b46eb67b9de 100644
--- a/ui/ozone/platform/x11/native_pixmap_egl_x11_binding.cc
+++ b/ui/ozone/platform/x11/native_pixmap_egl_x11_binding.cc
@@ -147,9 +147,17 @@ NativePixmapEGLX11Binding::~NativePixmapEGLX11Binding() {
   if (surface_) {
     eglDestroySurface(display_, surface_);
   }
+
+  if (pixmap_ != x11::Pixmap::None) {
+    auto* connection = x11::Connection::Get();
+    connection->FreePixmap({pixmap_});
+  }
 }
 
 bool NativePixmapEGLX11Binding::Initialize(x11::Pixmap pixmap) {
+  CHECK_NE(pixmap, x11::Pixmap::None);
+  pixmap_ = pixmap;
+
   if (eglInitialize(display_, nullptr, nullptr) != EGL_TRUE) {
     return false;
   }
@@ -223,9 +231,7 @@ std::unique_ptr<NativePixmapGLBinding> NativePixmapEGLX11Binding::Create(
     return nullptr;
   }
 
-  // TODO(https://crbug.com/1411749): if we early out below, should we call
-  // FreePixmap()?
-
+  // Transfer the ownership of `pixmap` to `NativePixmapEGLX11Binding`.
   if (!binding->Initialize(std::move(pixmap))) {
     VLOG(1) << "Unable to initialize binding from pixmap";
     return nullptr;
diff --git a/ui/ozone/platform/x11/native_pixmap_egl_x11_binding.h b/ui/ozone/platform/x11/native_pixmap_egl_x11_binding.h
index 013df3f776a..99b262b82ce 100644
--- a/ui/ozone/platform/x11/native_pixmap_egl_x11_binding.h
+++ b/ui/ozone/platform/x11/native_pixmap_egl_x11_binding.h
@@ -47,6 +47,8 @@ class NativePixmapEGLX11Binding : public NativePixmapGLBinding {
   EGLSurface surface_ = nullptr;
   EGLDisplay display_;
   gfx::BufferFormat format_;
+
+  x11::Pixmap pixmap_ = x11::Pixmap::None;
 };
 
 }  // namespace ui