static int
buffer_move( VipsBuffer *buffer, VipsRect *area )
{
VipsImage *im = buffer->im;
size_t new_bsize;
g_assert( buffer->ref_count == 1 );
vips_buffer_undone( buffer );
g_assert( !buffer->done );
buffer->area = *area;
new_bsize = (size_t) VIPS_IMAGE_SIZEOF_PEL( im ) *
area->width * area->height;
if( buffer->bsize < new_bsize ||
!buffer->buf ) {
buffer->bsize = new_bsize;
VIPS_FREEF( vips_tracked_free, buffer->buf );
if( !(buffer->buf = vips_tracked_malloc( buffer->bsize )) )
return( -1 );
}
return( 0 );
}
/* Call this from the relinquishing thread. Removes the buffer (if any) from
* this thread's buffer cache.
*/
void
vips__region_no_ownership( VipsRegion *region )
{
VIPS_GATE_START( "vips__region_no_ownership: wait" );
g_mutex_lock( region->im->sslock );
VIPS_GATE_STOP( "vips__region_no_ownership: wait" );
vips__region_check_ownership( region );
region->thread = NULL;
if( region->buffer )
vips_buffer_undone( region->buffer );
g_mutex_unlock( region->im->sslock );
}
void
vips_buffer_unref( VipsBuffer *buffer )
{
#ifdef DEBUG_VERBOSE
printf( "** vips_buffer_unref: left = %d, top = %d, "
"width = %d, height = %d (%p)\n",
buffer->area.left, buffer->area.top,
buffer->area.width, buffer->area.height,
buffer );
#endif /*DEBUG_VERBOSE*/
g_assert( buffer->ref_count > 0 );
buffer->ref_count -= 1;
if( buffer->ref_count == 0 ) {
VipsBufferCache *cache;
#ifdef DEBUG_VERBOSE
if( !buffer->done )
printf( "vips_buffer_unref: buffer was not done\n" );
#endif /*DEBUG_VERBOSE*/
vips_buffer_undone( buffer );
/* Place on this thread's reserve list for reuse.
*/
if( (cache = buffer_cache_get( buffer->im )) &&
cache->n_reserve < buffer_cache_max_reserve ) {
g_assert( !buffer->cache );
cache->reserve =
g_slist_prepend( cache->reserve, buffer );
cache->n_reserve += 1;
buffer->cache = cache;
buffer->area.width = 0;
buffer->area.height = 0;
}
else
vips_buffer_free( buffer );
}
}
void
vips_buffer_unref( VipsBuffer *buffer )
{
#ifdef DEBUG
printf( "** vips_buffer_unref: left = %d, top = %d, "
"width = %d, height = %d (%p)\n",
buffer->area.left, buffer->area.top,
buffer->area.width, buffer->area.height,
buffer );
#endif /*DEBUG*/
g_assert( buffer->ref_count > 0 );
buffer->ref_count -= 1;
if( buffer->ref_count == 0 ) {
#ifdef DEBUG
if( !buffer->done )
printf( "vips_buffer_unref: buffer was not done\n" );
#endif /*DEBUG*/
vips_buffer_undone( buffer );
buffer->im = NULL;
vips_tracked_free( buffer->buf );
buffer->bsize = 0;
g_free( buffer );
#ifdef DEBUG
g_mutex_lock( vips__global_lock );
g_assert( g_slist_find( vips__buffers_all, buffer ) );
vips__buffers_all = g_slist_remove( vips__buffers_all, buffer );
printf( "%d buffers in vips\n",
g_slist_length( vips__buffers_all ) );
g_mutex_unlock( vips__global_lock );
#endif /*DEBUG*/
}
}
