+I+Berkeley DB: DbTxnMgr::close[P

DbTxnMgr::close





#include <db_cxx.h>

intDbTxnMgr::close();





Description



NThe DbTxnMgr::close method detaches a process from the transaction environmentrspecified by the DbTxnMgr object. All mapped regions are unmappedHand any allocated resources are freed. Any uncommitted transactions areaborted.

uIn addition, if the dir argument to DbTxnMgr::open was NULL andedbenv was not initialized using DbEnv::appinit,?all files created for this shared region will be removed, as ifYthe DbTxnMgr::unlink method were called.



AIn multi-threaded applications, only a single thread may call theDbTxnMgr::close method.

The DbTxnMgr::close>method either returns errno or throws an exception that:encapsulates an errno on failure, and 0 on success.



Errors

VIf a fatal error occurs in Berkeley DB, the DbTxnMgr::close method may fail and eitherIreturn DB_RUNRECOVERY or throw an exception encapsulating DB_RUNRECOVERY,Gat which point all subsequent database calls will also fail in the sameFway. Methods marked as returning errno will, by default, throwHan exception that encapsulates the error information. The default error\behavior can be changed, see DbException.

The DbTxnMgr::close&method may fail and throw an exceptionKfor any of the errors specified for the following Berkeley DB and C library functions: abort(3), close(3), fcntl(3), fflush(3), fprintf(3),free(3), getpid(3),>DbLockTab::vec,:DbLog::flush, memset(3), munmap(3), shmctl(3), shmdt(3), strerror(3), strlen(3),:DbTxn::abort, unlink(3), vfprintf(3),and vsnprintf(3).



Class

8DbTxnMgr



See Also

@DbTxnMgr::begin,JDbTxnMgr::checkpoint,DbTxnMgr::close,>DbTxnMgr::open,=DbTxnMgr::statandBDbTxnMgr::unlink.
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