[gegl] buffer: don't acquire tile storage lock in NN sampler ...

[N/A <ell src gnome org>]

commit eb33c65ea8f143d0dd811fe43b3dd4576e08673c
Author: Ell <ell_se yahoo com>
Date:   Thu Sep 15 08:17:30 2016 +0000

    buffer: don't acquire tile storage lock in NN sampler ...
    
    ... when not using multithreading

 gegl/buffer/gegl-sampler-nearest.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/gegl/buffer/gegl-sampler-nearest.c b/gegl/buffer/gegl-sampler-nearest.c
index 956d78d..4ec2cab 100644
--- a/gegl/buffer/gegl-sampler-nearest.c
+++ b/gegl/buffer/gegl-sampler-nearest.c
@@ -131,7 +131,8 @@ gegl_sampler_get_pixel (GeglSampler    *sampler,
     }
 
   gegl_buffer_lock (sampler->buffer);
-  g_rec_mutex_lock (&buffer->tile_storage->mutex);
+  if (gegl_config_threads()>1)
+    g_rec_mutex_lock (&buffer->tile_storage->mutex);
 
   {
     gint tile_width  = buffer->tile_width;
@@ -166,7 +167,8 @@ gegl_sampler_get_pixel (GeglSampler    *sampler,
         babl_process (sampler->fish, tp, buf, 1);
       }
   }
-  g_rec_mutex_unlock (&buffer->tile_storage->mutex);
+  if (gegl_config_threads()>1)
+    g_rec_mutex_unlock (&buffer->tile_storage->mutex);
   gegl_buffer_unlock (sampler->buffer);
 }