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DB_ENV->log_put |
#include <db.h>int DB_ENV->log_put(DB_ENV *env, DB_LSN *lsn, const DBT *data, u_int32_t flags);
The DB_ENV->log_put method appends records to the log. The DB_LSN of the put record is returned in the lsn parameter.
The DB_ENV->log_put method returns a non-zero error value on failure and 0 on success.
The caller is responsible for providing any necessary structure to data. (For example, in a write-ahead logging protocol, the application must understand what part of data is an operation code, what part is redo information, and what part is undo information. In addition, most transaction managers will store in data the DB_LSN of the previous log record for the same transaction, to support chaining back through the transaction's log records during undo.)
The DB_ENV->log_flush method may fail and return one of the following non-zero errors:
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