[gtksourceview] filesaver: use aligned pages for write chunks

[Christian Hergert <chergert src gnome org>]

commit 750729acf709ece28e1532400553b35dc8522067
Author: Christian Hergert <chergert redhat com>
Date:   Tue Dec 14 16:01:12 2021 -0800

    filesaver: use aligned pages for write chunks

 gtksourceview/gtksourcefilesaver.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)
---
diff --git a/gtksourceview/gtksourcefilesaver.c b/gtksourceview/gtksourcefilesaver.c
index b672ad6d..24722c0f 100644
--- a/gtksourceview/gtksourcefilesaver.c
+++ b/gtksourceview/gtksourcefilesaver.c
@@ -31,6 +31,7 @@
 #include "gtksourcebuffer.h"
 #include "gtksourcebuffer-private.h"
 #include "gtksource-enumtypes.h"
+#include "gtksourceutils-private.h"
 
 /**
  * GtkSourceFileSaver:
@@ -57,7 +58,8 @@
 #define DEBUG(x)
 #endif
 
-#define WRITE_CHUNK_SIZE 8192
+#define WRITE_N_PAGES 2
+#define WRITE_CHUNK_SIZE (_gtk_source_utils_get_page_size()*WRITE_N_PAGES)
 
 #define QUERY_ATTRIBUTES G_FILE_ATTRIBUTE_TIME_MODIFIED
 
@@ -127,7 +129,7 @@ typedef struct
 
        gssize chunk_bytes_read;
        gssize chunk_bytes_written;
-       gchar chunk_buffer[WRITE_CHUNK_SIZE];
+       gchar *chunk_buffer;
 
        guint tried_mount : 1;
 } TaskData;
@@ -143,7 +145,14 @@ static void recover_not_mounted (GTask *task);
 static TaskData *
 task_data_new (void)
 {
-       return g_new0 (TaskData, 1);
+       TaskData *task_data = g_new0 (TaskData, 1);
+
+       task_data->chunk_buffer =
+               _gtk_source_utils_aligned_alloc (_gtk_source_utils_get_page_size (),
+                                                WRITE_N_PAGES,
+                                                _gtk_source_utils_get_page_size ());
+
+       return task_data;
 }
 
 static void
@@ -166,6 +175,8 @@ task_data_free (gpointer data)
                task_data->progress_cb_notify (task_data->progress_cb_data);
        }
 
+       _gtk_source_utils_aligned_free (task_data->chunk_buffer);
+
        g_free (task_data);
 }