import CS gnome-shell-3.32.2-57.el8
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SOURCES/0001-st-theme-Reuse-stylesheets-if-possible.patch
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115
SOURCES/0001-st-theme-Reuse-stylesheets-if-possible.patch
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From 7909d2f989e937e9300933a718e1721bf7346d9d Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Florian=20M=C3=BCllner?= <fmuellner@gnome.org>
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Date: Wed, 29 Jan 2025 02:46:44 +0100
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Subject: [PATCH] st/theme: Reuse stylesheets if possible
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The following happens when processing an `@import()` rule:
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1. `_st_theme_resolve_url()` to resolve file
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2. `insert_stylesheet()` to track file/sheet
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a. take ownership of file/sheet (ref)
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b. use file as key in `stylesheets_by_file` hash table
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c. use file as value in `files_by_stylesheet` hash table
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3. release reference to file
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This leads to a refcount error when importing a file that
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was already parsed before:
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1. file start with refcount 1
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2. `insert_stylesheet()`
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a. increases refcount to 2
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b. inserting into `stylesheets_by_file` *decreases* the
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passed-in key if the key already exists
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c. `files_by_stylesheet` now tracks a file with recount 1
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3. releases the last reference to file
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The file object tracked in `files_by_stylesheet` is now invalid,
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and accessing it results in a crash.
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Avoid this issue by reusing existing stylesheets, so we don't insert
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a stylesheet that's already tracked.
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As a side-effect, this also saves us from re-parsing the same file
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unnecessarily.
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Closes: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/7306
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Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3619>
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---
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src/st/st-theme.c | 32 ++++++++++++++++++++++++++------
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1 file changed, 26 insertions(+), 6 deletions(-)
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diff --git a/src/st/st-theme.c b/src/st/st-theme.c
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index b567f7e5e3..3ecaf5ed1b 100644
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--- a/src/st/st-theme.c
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+++ b/src/st/st-theme.c
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@@ -249,6 +249,27 @@ insert_stylesheet (StTheme *theme,
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g_hash_table_insert (theme->files_by_stylesheet, stylesheet, file);
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}
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+static CRStyleSheet *
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+resolve_stylesheet (StTheme *theme,
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+ GFile *file,
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+ GError **error)
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+{
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+ CRStyleSheet *sheet;
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+
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+ sheet = g_hash_table_lookup (theme->stylesheets_by_file, file);
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+ if (sheet)
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+ {
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+ cr_stylesheet_ref (sheet);
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+ return sheet;
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+ }
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+
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+ sheet = parse_stylesheet (file, error);
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+ if (sheet)
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+ insert_stylesheet (theme, file, sheet);
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+
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+ return sheet;
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+}
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+
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gboolean
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st_theme_load_stylesheet (StTheme *theme,
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GFile *file,
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@@ -256,13 +277,12 @@ st_theme_load_stylesheet (StTheme *theme,
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{
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CRStyleSheet *stylesheet;
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- stylesheet = parse_stylesheet (file, error);
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+ stylesheet = resolve_stylesheet (theme, file, error);
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if (!stylesheet)
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return FALSE;
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stylesheet->app_data = GUINT_TO_POINTER (TRUE);
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- insert_stylesheet (theme, file, stylesheet);
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cr_stylesheet_ref (stylesheet);
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theme->custom_stylesheets = g_slist_prepend (theme->custom_stylesheets, stylesheet);
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g_signal_emit (theme, signals[STYLESHEETS_CHANGED], 0);
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@@ -873,6 +893,7 @@ add_matched_properties (StTheme *a_this,
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if (import_rule->sheet == NULL)
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{
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+ CRStyleSheet *sheet = NULL;
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GFile *file = NULL;
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if (import_rule->url->stryng && import_rule->url->stryng->str)
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@@ -880,13 +901,12 @@ add_matched_properties (StTheme *a_this,
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file = _st_theme_resolve_url (a_this,
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a_nodesheet,
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import_rule->url->stryng->str);
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- import_rule->sheet = parse_stylesheet (file, NULL);
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+ sheet = resolve_stylesheet (a_this, file, NULL);
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}
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- if (import_rule->sheet)
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+ if (sheet)
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{
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- insert_stylesheet (a_this, file, import_rule->sheet);
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- /* refcount of stylesheets starts off at zero, so we don't need to unref! */
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+ import_rule->sheet = sheet;
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}
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else
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{
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--
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2.49.0
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@ -6,7 +6,7 @@
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Name: gnome-shell
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Version: 3.32.2
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Release: 56%{?dist}
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Release: 57%{?dist}
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Summary: Window management and application launching for GNOME
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Group: User Interface/Desktops
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@ -78,6 +78,7 @@ Patch62: fix-nm-device-settings.patch
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Patch63: owe-support.patch
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Patch64: 0001-windowMenu-Ignore-release.patch
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Patch65: 0001-overview-Hide-the-overview-on-session-mode-hasOvervi.patch
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Patch66: 0001-st-theme-Reuse-stylesheets-if-possible.patch
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# Backport JS invalid access warnings (#1651894, #1663171, #1642482, #1637622)
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Patch70: fix-invalid-access-warnings.patch
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@ -304,6 +305,10 @@ desktop-file-validate %{buildroot}%{_datadir}/applications/evolution-calendar.de
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%endif
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%changelog
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* Thu May 15 2025 Florian Müllner <fmuellner@redhat.com> - 3.32.2-57
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- Fix refcount issue in stylesheet tracking
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Resolves: RHEL-91810
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* Wed Jul 10 2024 Florian Müllner <fmuellner@redhat.com> - 3.32.2-56
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- Only open portal login in response to user action
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Resolves: RHEL-39097
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