C++ (Cpp) gegl_tile_backend_swap_writeの例

コード例 #1

ファイル: gegl-tile-backend-swap.c プロジェクト: bantu/gegl

static gpointer
gegl_tile_backend_swap_writer_thread (gpointer ignored)
{
  while (TRUE)
    {
      ThreadParams *params;

      g_mutex_lock (&mutex);

      while (g_queue_is_empty (queue) && !exit_thread)
        g_cond_wait (&queue_cond, &mutex);

      if (exit_thread)
        {
          g_mutex_unlock (&mutex);
          GEGL_NOTE (GEGL_DEBUG_TILE_BACKEND, "exiting writer thread");
          return NULL;
        }

      params = (ThreadParams *)g_queue_pop_head (queue);
      if (params->operation == OP_WRITE)
        {
          in_progress = params;
          params->entry->link = NULL;
        }

      g_mutex_unlock (&mutex);

      switch (params->operation)
        {
        case OP_WRITE:
          gegl_tile_backend_swap_write (params);
          break;
        case OP_TRUNCATE:
          if (ftruncate (out_fd, total) != 0)
            g_warning ("failed to resize swap file: %s", g_strerror (errno));
          break;
        }

      g_mutex_lock (&mutex);

      in_progress = NULL;

      if (params->operation == OP_WRITE)
        gegl_tile_unref (params->tile);

      g_slice_free (ThreadParams, params);

      g_mutex_unlock (&mutex);
    }

  return NULL;
}

コード例 #2

ファイル: gegl-tile-backend-swap.c プロジェクト: ChristianBusch/gegl

static gpointer
gegl_tile_backend_swap_writer_thread (gpointer ignored)
{
  while (TRUE)
    {
      ThreadParams *params;

      g_mutex_lock (&mutex);

      while (g_queue_is_empty (queue) && !exit_thread)
        g_cond_wait (&queue_cond, &mutex);

      if (exit_thread)
        {
          g_mutex_unlock (&mutex);
          GEGL_NOTE (GEGL_DEBUG_TILE_BACKEND, "exiting writer thread");
          return NULL;
        }

      params = (ThreadParams *)g_queue_pop_head (queue);
      if (params->operation == OP_WRITE)
        {
          in_progress = params;
          params->entry->link = NULL;
        }

      g_mutex_unlock (&mutex);

      switch (params->operation)
        {
        case OP_WRITE:
          gegl_tile_backend_swap_write (params);
          break;
        case OP_TRUNCATE:
          if (ftruncate (out_fd, total) != 0)
            g_warning ("failed to resize swap file: %s", g_strerror (errno));
          break;
        }

      g_mutex_lock (&mutex);

      in_progress = NULL;

      if (params->operation == OP_WRITE)
        {
          queue_size -= params->length + sizeof (GList) +
            sizeof (ThreadParams);
          g_free (params->source);

          /* unblock the main thread if the queue had gotten too big */
          if (queue_size < gegl_config ()->queue_size)
            g_cond_signal (&max_cond);
        }

      g_slice_free (ThreadParams, params);

      g_mutex_unlock (&mutex);
    }

  return NULL;
}