+I,Berkeley DB: DbLockTab::close[P

DbLockTab::close





#include <db_cxx.h>

intDbLockTab::close();





Description



2The DbLockTab::close method closes the lock table.

HThe DbLockTab::close method does not release any locks still held by the>closing process, providing functionality for long-lived locks.AProcesses that wish to have all their locks released can do so by[issuing the appropriate DbLockTab::vec call.

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

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

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



Errors

WIf a fatal error occurs in Berkeley DB, the DbLockTab::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 DbLockTab::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), memset(3), munmap(3), shmctl(3), shmdt(3), strlen(3), unlink(3), vfprintf(3),and vsnprintf(3).



Class

:DbLockTab



See Also

DbLockTab::close,DDbLockTab::detect,>DbLockTab::get,<DbLockTab::id,@DbLockTab::open,?DbLockTab::statCDbLockTab::unlinkand>DbLockTab::vec.
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