sergiotarxz/libvips
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fix a segv

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vips_image_write() needs to ref its argument if it's a delayed
calculation ... fixes a segv under heavy load
This commit is contained in:
John Cupitt 2012-03-06 13:24:40 +00:00
parent 3297400952
commit 91837d8277
2 changed files with 20 additions and 5 deletions
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8
libvips/iofuncs/image.c
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@ -1651,6 +1651,14 @@ vips_image_write( VipsImage *image, VipsImage *out )
vips_demand_hint( out,
VIPS_DEMAND_STYLE_THINSTRIP, image, NULL );
/* If this will be a delayed calculation we need to keep @image
* around for as long as @out is about.
*/
if( vips_image_ispartial( image ) ) {
g_object_ref( image );
vips_object_local( out, image );
}
if( vips_image_generate( out,
vips_start_one, vips_image_write_gen, vips_stop_one,
image, NULL ) )

17
libvips/iofuncs/region.c
View File

@ -282,6 +282,7 @@ vips_region_dispose( GObject *gobject )
image->regions = g_slist_remove( image->regions, region );
g_mutex_unlock( image->sslock );
region->im = NULL;
g_object_unref( image );
G_OBJECT_CLASS( vips_region_parent_class )->dispose( gobject );
@ -461,20 +462,26 @@ vips_region_new( VipsImage *image )
{
VipsRegion *region;
region = VIPS_REGION( g_object_new( VIPS_TYPE_REGION, NULL ) );
/* We can't use the property system, we need to be very threaded.
/* Ref quickly, we want to make sure we keep the image around.
* We can't use the property system, we need to be very threaded.
*/
region->im = image;
g_object_ref( image );
g_assert( G_OBJECT( image )->ref_count > 1 );
#ifdef DEBUG
g_assert( vips_object_sanity( VIPS_OBJECT( image ) ) );
#endif /*DEBUG*/
region = VIPS_REGION( g_object_new( VIPS_TYPE_REGION, NULL ) );
region->im = image;
if( vips_object_build( VIPS_OBJECT( region ) ) ) {
VIPS_UNREF( region );
return( NULL );
}
#ifdef DEBUG
g_assert( vips_object_sanity( VIPS_OBJECT( image ) ) );
g_assert( vips_object_sanity( VIPS_OBJECT( region ) ) );
#endif /*DEBUG*/