test vips memory behaviour

danila.cpp

/* compile with
 *
 * g++ -g -Wall danila.cpp `pkg-config vips --cflags --libs`
 */

#include <vector>
#include <string>
#include <iostream>

#include <vips/vips.h>

int
main( int argc, char **argv )
{
	if( VIPS_INIT( argv[0] ) )
		vips_error_exit( NULL ); 

	vips_cache_set_max( 0 );

	std::vector<VipsImage *> aImages;

	for( int i = 0; i < argc - 1; i++ ) {
		VipsImage *image;
		VipsRegion *region;
	
		if( !(image = vips_image_new_from_file( argv[i + 1], NULL)) )
			vips_error_exit( NULL ); 

		aImages.push_back( image );

		VipsRect rect = { 0, 0, image->Xsize / 3, image->Ysize / 3 };

		region = vips_region_new( image );
		if( vips_region_prepare( region, &rect ) )
			vips_error_exit( NULL ); 
		g_object_unref( region );
	}

	std::cout << "Before image unref, ";
	std::cout << vips_tracked_get_allocs() << " allocations, ";
	std::cout << vips_tracked_get_mem() << " bytes, ";
	std::cout << vips_tracked_get_files() << " open files" << std::endl;

	// Here we check memory consumption
	std::cout << "Paused, type something and press return ..." << std::endl;
	std::string a;
	std::cin >> a;

	for( unsigned int i = 0; i < aImages.size(); i++ ) 
		g_object_unref( aImages[i] );

	std::cout << "Live objects:" << std::endl;
	vips_object_print_all();

	std::cout << "After image unref, ";
	std::cout << vips_tracked_get_allocs() << " allocations, ";
	std::cout << vips_tracked_get_mem() << " bytes, ";
	std::cout << vips_tracked_get_files() << " open files" << std::endl;

	// Here we check memory consumption
	std::cout << "Paused, type something and press return ..." << std::endl;
	std::cin >> a;

	std::cout << "Exiting ..." << std::endl;

	return( 0 );
}