+I(Berkeley DB: DbLog::flush[P

DbLog::flush





#include <db_cxx.h>

intDbLog::flush(const DbLsn *lsn);





Description



=The DbLog::flush method guarantees that all log records whose9DbLsn values;are less than or equal to the lsn argument have been;written to disk. If lsn is NULL, all records in thelog are flushed.

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



Errors

SIf a fatal error occurs in Berkeley DB, the DbLog::flush 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 DbLog::flush&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),dbenv->db_paniccall(3), fcntl(3), fflush(3), fprintf(3),free(3), fsync(3), getenv(3), getpid(3), getuid(3), isdigit(3), lseek(3), malloc(3), memcpy(3), memset(3),open(3),sigfillset(3),sigprocmask(3), snprintf(3),stat(3), strerror(3), strlen(3), unlink(3), vfprintf(3), vsnprintf(3),and write(3).

In addition, the DbLog::flush&method may fail and throw an exceptionor return errnofor the following conditions:

B

EINVAL
An invalid flag value or parameter was specified.







Class

2DbLog



See Also

>DbLog::archive,:DbLog::close,>DbLog::compare,8DbLog::file, DbLog::flush,6DbLog::get,8DbLog::open,6DbLog::put,FDbLog::db_register,8DbLog::stat,;DbLog::unlinkandJDbLog::db_unregister.
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