Made GEGL clean up the swap dir on launch for all swap files belonging to

* gegl/gegl-init.c: (pid_is_running), (swap_clean), (gegl_exit),
(gegl_post_parse_hook): Made GEGL clean up the swap dir on launch
for all swap files belonging to non running processes, also fixed
the glob used to find the current process' swaps.

svn path=/trunk/; revision=2704

ChangeLog

+2008-11-08  Øyvind Kolås  <pippin@gimp.org>
+
+	* gegl/gegl-init.c: (pid_is_running), (swap_clean), (gegl_exit),
+	(gegl_post_parse_hook): Made GEGL clean up the swap dir on launch
+	for all swap files belonging to non running processes, also fixed
+	the glob used to find the current process' swaps.
+
 2008-11-08  Øyvind Kolås  <pippin@gimp.org>
 
 	* bin/gegl.c: updated splash, fixed utf8 encodings of names and

gegl/gegl-init.c

@@ -252,6 +252,49 @@ void gegl_tile_backend_tiledir_stats (void);
 #endif
 void gegl_tile_backend_file_stats (void);
 
+static gboolean
+pid_is_running (gint pid)
+{
+  gchar buf[512];
+  g_sprintf (buf, "/proc/%i", pid);
+  return g_file_test (buf, G_FILE_TEST_EXISTS);
+}
+
+
+static void swap_clean (void)
+{ 
+  GDir         *dir     = g_dir_open (gegl_swap_dir (), 0, NULL);
+  gchar        *glob    = g_strdup_printf ("*");
+  GPatternSpec *pattern = g_pattern_spec_new (glob);
+  g_free (glob);
+
+  if (dir != NULL)
+    {
+      const gchar *name;
+
+      while ((name = g_dir_read_name (dir)) != NULL)
+        {
+          if (g_pattern_match_string (pattern, name))
+            {
+              gint readpid = atoi (name);
+                  
+              if (!pid_is_running (readpid))
+                {
+                  gchar *fname = g_build_filename (gegl_swap_dir (),
+                                                       name,
+                                                       NULL);
+                  g_unlink (fname);
+                  g_free (fname);
+                }
+            }
+         }
+       g_dir_close (dir);
+    }
+
+ g_pattern_spec_free (pattern);
+}
+
+
 void
 gegl_exit (void)
 {
@@ -301,7 +344,7 @@ gegl_exit (void)
       guint         pid     = getpid ();
       GDir         *dir     = g_dir_open (gegl_swap_dir (), 0, NULL);
 
-      gchar        *glob    = g_strdup_printf ("GEGL-%i-*.swap", pid);
+      gchar        *glob    = g_strdup_printf ("%i-*", pid);
       GPatternSpec *pattern = g_pattern_spec_new (glob);
       g_free (glob);
 
@@ -332,6 +375,7 @@ gegl_exit (void)
   g_print ("\n");
 }
 
+static void swap_clean (void);
 
 
 static void
@@ -486,6 +530,7 @@ gegl_post_parse_hook (GOptionContext *context,
         g_object_set (config, "quality", 1.0, NULL);
     }
 
+  swap_clean ();
   return TRUE;
 }