libvips/libvips/include/vips/pool.h

93 lines
2.4 KiB
C

/* manage pools of objects for unreffing
*/
/*
Copyright (C) 1991-2003 The National Gallery
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifndef VIPS_POOL_H
#define VIPS_POOL_H
#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/
/* A pool context ... just an array of GObject pointers.
*/
typedef GPtrArray VipsPoolContext;
/* A VipsPool is really just a hash table, but we make it a VipsObject so we
* can put pools into other pools.
*/
#define VIPS_TYPE_POOL (vips_pool_get_type())
#define VIPS_POOL( obj ) \
(G_TYPE_CHECK_INSTANCE_CAST( (obj), VIPS_TYPE_POOL, VipsPool ))
#define VIPS_POOL_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_CAST( (klass), VIPS_TYPE_POOL, VipsPoolClass))
#define VIPS_IS_POOL( obj ) \
(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_POOL ))
#define VIPS_IS_POOL_CLASS( klass ) \
(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_POOL ))
#define VIPS_POOL_GET_CLASS( obj ) \
(G_TYPE_INSTANCE_GET_CLASS( (obj), VIPS_TYPE_POOL, VipsPoolClass ))
typedef struct _VipsPool {
VipsObject parent_object;
/* A table of all the contexts we've seen.
*/
GHashTable *contexts;
/* Track a name for debugging.
*/
const char *name;
} VipsPool;
typedef struct _VipsPoolClass {
VipsObjectClass parent_class;
} VipsPoolClass;
GType vips_pool_get_type( void );
VipsPool *vips_pool_new( const char *name );
VipsPoolContext *vips_pool_context_new( VipsPool *pool );
GObject **vips_pool_context_object( VipsPoolContext *context, int n );
/* Save some typing. This assumes you have a (VipsPoolContext *) called
* "context" in scope.
*/
#define VIPS_VI( N ) \
(*((VipsImage **) vips_pool_context_object( context, (N) )))
#ifdef __cplusplus
}
#endif /*__cplusplus*/
#endif /*VIPS_POOL_H*/