Use atomic reference counting.

2008-08-22  Behdad Esfahbod  <behdad@gnome.org>

        * pango/fonts.c (pango_font_metrics_ref),
        (pango_font_metrics_unref):
        * pango/pango-attributes.c (pango_attr_list_ref),
        (pango_attr_list_unref):
        * pango/pango-coverage.c (pango_coverage_ref),
        (pango_coverage_unref):
        * pango/pango-layout.c (pango_layout_line_ref),
        (pango_layout_line_unref):
        * pango/pangowin32-fontcache.c (cache_entry_unref),
        (pango_win32_font_cache_loadw):
        * pango/pangox-fontcache.c (cache_entry_unref),
        (pango_x_font_cache_load):
        Use atomic reference counting.

        Pango may not be thread safe yet, but fixing it little by little
        is easier than doing all in one round.

svn path=/trunk/; revision=2705

1 files changed, 2 insertions, 4 deletions

diff --git a/pango/pango-coverage.c b/pango/pango-coverage.c
index f22431b7..77559d0a 100644
--- a/pango/pango-coverage.c
+++ b/pango/pango-coverage.c
@@ -122,7 +122,7 @@ pango_coverage_ref (PangoCoverage *coverage)
 {
   g_return_val_if_fail (coverage != NULL, NULL);
 
-  coverage->ref_count++;
+  g_atomic_int_inc (&coverage->ref_count);
 
   return coverage;
 }
@@ -142,9 +142,7 @@ pango_coverage_unref (PangoCoverage *coverage)
   g_return_if_fail (coverage != NULL);
   g_return_if_fail (coverage->ref_count > 0);
 
-  coverage->ref_count--;
-
-  if (coverage->ref_count == 0)
+  if (g_atomic_int_dec_and_test (&coverage->ref_count))
     {
       for (i=0; i<coverage->n_blocks; i++)
 	g_free (coverage->blocks[i].data);