main.c

extremeDB s sample code,useful for you

/***************************************************************
 *                                                             *
 * Copyright (c) 2001-2006 McObject LLC. All Right Reserved.   *
 *                                                             *
 ***************************************************************/

/*
 * This sample demonstrates the use of VECTORS and vector-based
 * indexes. It is based on the schema described in vectors.mco
 */
#include "platform.h"
#include <stdio.h>
#include <stdlib.h>

#include "vectors.h"
#include "demo.h"

#define DB_MEM_SIZE 1024 * 10000				  /* bytes to be used by database */
#ifndef MCO_PLATFORM_X64
#define DB_PAGESIZE 120							  /* page size */
#else
#define DB_PAGESIZE 240							  /* page size */
#endif
const int MAP_ADDRESS =  0x20000000;

void _SH_(void) {

	char text[] = {
		"\nThis sample demonstrates the use of VECTOR declaration, vector-based\n"
		"operations and vector-based indexes.\n"
	};
	char text1[] = {
		"Copyright (c) 2001-2006 McObject LLC. All Right Reserved.\n\n"
	};

	printf("%s\neXtremeDB runtime version %d.%d, build %d\n%s\n\nPress Enter to start",
		text, MCO_COMP_VER_MAJOR, MCO_COMP_VER_MINOR, MCO_COMP_BUILD_NUM,text1);

	getchar();
}


int main( void ) {
	MCO_RET         rc;
	mco_db_h        db = 0;
	const char  *instance_name = "demoDb";
	void                *db_mem;
	mco_runtime_info_t info;

	_SH_();
	mco_get_runtime_info( &info);
	if ( info.mco_shm_supported ) {
		db_mem = (void*)MAP_ADDRESS;
	}
	else {
		db_mem = (void*)malloc(DB_MEM_SIZE);
		if (!db_mem) {
			printf("Couldn't allocated memory\n");
			exit (1);
		}
	};

	rc = mco_runtime_start();
	rc = mco_db_open( instance_name, vectors_get_dictionary(), db_mem, DB_MEM_SIZE, DB_PAGESIZE );

	if ( rc ) {
		printf( "\nerror creating database" );
		if ( !info.mco_shm_supported )
			free( db_mem );
		exit( 1 );
	}

	mco_db_connect( instance_name, &db );

	demo( db );

	mco_db_disconnect( db );
	mco_db_close( instance_name );
	mco_runtime_stop();

	if ( !info.mco_shm_supported )
		free( db_mem );

	printf( "\nPress Enter to exit" );
	getchar();
  PROG_EXIT(0);

}