MySQL数据库开发源码 值得一看哦

				#include 				#include 				#include "mgmapi_configuration.hpp"								ndb_mgm_configuration_iterator::ndb_mgm_configuration_iterator				(const ndb_mgm_configuration & conf, unsigned type_of_section)				  : m_config(conf.m_config)				{				  m_sectionNo = ~0;				  m_typeOfSection = type_of_section;				  first();				}								ndb_mgm_configuration_iterator::~ndb_mgm_configuration_iterator(){				  reset();				}								void 				ndb_mgm_configuration_iterator::reset(){				  if(m_sectionNo != (Uint32)~0){				    m_config.closeSection();				  }				}												int				ndb_mgm_configuration_iterator::enter(){				  bool ok = m_config.openSection(m_typeOfSection, m_sectionNo);				  if(ok){				    return 0;				  }								  reset();				  m_sectionNo = ~0;				  return -1;				}								int				ndb_mgm_configuration_iterator::first(){				  reset();				  m_sectionNo = 0;				  return enter();				}								int				ndb_mgm_configuration_iterator::next(){				  reset();				  m_sectionNo++;				  return enter();				}								int				ndb_mgm_configuration_iterator::valid() const {				  return m_sectionNo != (Uint32)~0;				}								int				ndb_mgm_configuration_iterator::find(int param, unsigned search){				  unsigned val = search + 1;								  while(get(param, &val) == 0 && val != search){				    if(next() != 0)				      break;				  }				  				  if(val == search)				    return 0;				  				  return -1;				}								int				ndb_mgm_configuration_iterator::get(int param, unsigned * value) const {				  return m_config.get(param, value) != true;								}								int 				ndb_mgm_configuration_iterator::get(int param, 								    unsigned long long * value) const{				  return m_config.get(param, value) != true;				}								int 				ndb_mgm_configuration_iterator::get(int param, const char ** value) const {				  return m_config.get(param, value) != true;				}								/**				 * Published C interface				 */				extern "C"				ndb_mgm_configuration_iterator* 				ndb_mgm_create_configuration_iterator(ndb_mgm_configuration * conf, 								      unsigned type_of_section){				  ndb_mgm_configuration_iterator* iter = (ndb_mgm_configuration_iterator*)				    malloc(sizeof(ndb_mgm_configuration_iterator));				  if(iter == 0)				    return 0;								  return new(iter) ndb_mgm_configuration_iterator(* conf, type_of_section);				}												extern "C"				void ndb_mgm_destroy_iterator(ndb_mgm_configuration_iterator* iter){				  if(iter != 0){				    iter->~ndb_mgm_configuration_iterator();				    free(iter);				  }				}								extern "C"				int 				ndb_mgm_first(ndb_mgm_configuration_iterator* iter){				  return iter->first();				}								extern "C"				int 				ndb_mgm_next(ndb_mgm_configuration_iterator* iter){				  return iter->next();				}								extern "C"				int 				ndb_mgm_valid(const ndb_mgm_configuration_iterator* iter){				  return iter->valid();				}								extern "C"				int 				ndb_mgm_get_int_parameter(const ndb_mgm_configuration_iterator* iter, 							  int param, unsigned * value){				  return iter->get(param, value);				}								extern "C"				int 				ndb_mgm_get_int64_parameter(const ndb_mgm_configuration_iterator* iter, 							    int param, Uint64 * value){				  return iter->get(param, value);				}								extern "C"				int 				ndb_mgm_get_string_parameter(const ndb_mgm_configuration_iterator* iter, 							     int param, const char  ** value){				  return iter->get(param, value);				}								extern "C"				int 				ndb_mgm_find(ndb_mgm_configuration_iterator* iter,					     int param, unsigned search){				  return iter->find(param, search);				}