eXtremeDB API使用演示

    这里写了一段code，加深对eXtremeDB API的使用方法的认识。

#define DATABASE_SEGMENT_SIZE 300 * 1024
#define MEMORY_PAGE_SIZE 128
const char * db_name = "SimpleDb";
void main()
{
RC rc;
mco_device_t dev;
mco_db_params_t db_params;
/* start eXtremeDB runtime */
mco_runtime_start();
/* setup memory device as a plain conventional memory region */
dev.type = MCO_MEMORY_CONV;
dev.assignment = MCO_MEMORY_ASSIGN_DATABASE;
dev.size = DATABASE_SEGMENT_SIZE;
dev.dev.conv.ptr = (void*)malloc( DATABASE_SEGMENT_SIZE );
/* initialize and customize the database parameters */
mco_db_params_init ( &db_params );
db_params.mem_page_size = MEMORY_PAGE_SIZE;
db_params.disk_page_size = 0;
db_params.db_max_connections = 1;
/* open a database on the device with given params */
rc = mco_db_open_dev(db_name,SimpleDb_get_dictionary(),&dev,1,&db_params );
if ( MCO_S_OK == rc ) {
mco_db_close(db_name); /* close the database */
} else {
printf("\tError %d opening database", rc );
}
mco_runtime_stop();
free( dev.dev.conv.ptr );
return 0;
}