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DbSequence::stat |
#include <db_cxx.h>int Db::stat(void *sp, u_int32_t flags);
int Db::stat_print(u_int32_t flags);
The DbSequence::stat method creates a statistical structure and copies a pointer to it into user-specified memory locations. Specifically, if sp is non-NULL, a pointer to the statistics for the database are copied into the memory location to which it refers.
Statistical structures are stored in allocated memory. If application-specific allocation routines have been declared (see DbEnv::set_alloc for more information), they are used to allocate the memory; otherwise, the standard C library malloc(3) is used. The caller is responsible for deallocating the memory. To deallocate the memory, free the memory reference; references inside the returned memory need not be individually freed.
In the presence of multiple threads or processes accessing an active sequence, the information returned by DbSequence::stat may be out-of-date.
The DbSequence::stat method cannot be transaction-protected. For this reason, it should be called in a thread of control that has no open cursors or active transactions.
The statistics are stored in a structure of type DB_SEQUENCE_STAT. The following fields will be filled in:
The DbSequence::stat_print method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success.
The DbSequence::stat_print method prints diagnostic information to the output channel described by the DbEnv::set_msgfile method.
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