C++ (Cpp) __wt_logop_col_truncate_pack Examples

Example #1

File: txn_log.c Project: RolfAndreassen/wiredtiger

/*
 * __wt_txn_log_commit --
 *	Write the operations of a transaction to the log at commit time.
 */
int
__wt_txn_log_commit(WT_SESSION_IMPL *session, const char *cfg[])
{
	WT_DECL_RET;
	WT_DECL_ITEM(logrec);
	WT_TXN *txn;
	WT_TXN_OP *op;
	const char *fmt = WT_UNCHECKED_STRING(Iq);
	size_t header_size;
	uint32_t rectype = WT_LOGREC_COMMIT;
	u_int i;

	WT_UNUSED(cfg);
	txn = &session->txn;

	WT_RET(__wt_struct_size(session, &header_size, fmt, rectype, txn->id));
	WT_RET(__wt_logrec_alloc(session, header_size, &logrec));

	WT_ERR(__wt_struct_pack(session,
	    (uint8_t *)logrec->data + logrec->size, header_size,
	    fmt, rectype, txn->id));
	logrec->size += (uint32_t)header_size;

	/* Write updates to the log. */
	for (i = 0, op = txn->mod; i < txn->mod_count; i++, op++)
		switch (op->type) {
		case TXN_OP_BASIC:
			WT_ERR(__txn_op_log(session, logrec, op));
			break;
		case TXN_OP_INMEM:
		case TXN_OP_REF:
			/* Nothing to log, we're done. */
			break;
		case TXN_OP_TRUNCATE_COL:
			WT_ERR(__wt_logop_col_truncate_pack(session, logrec,
			    op->fileid,
			    op->u.truncate_col.start, op->u.truncate_col.stop));
			break;
		case TXN_OP_TRUNCATE_ROW:
			WT_ERR(__wt_logop_row_truncate_pack(session, logrec,
			    op->fileid,
			    &op->u.truncate_row.start, &op->u.truncate_row.stop,
			    (uint32_t)op->u.truncate_row.mode));
			break;
		}

	WT_ERR(__wt_log_write(session,
	    logrec, NULL, S2C(session)->txn_logsync));

err:	__wt_logrec_free(session, &logrec);
	return (ret);
}

Example #2

File: txn_log.c Project: DINKIN/mongo

/*
 * __wt_txn_log_op --
 *	Write the last logged operation into the in-memory buffer.
 */
int
__wt_txn_log_op(WT_SESSION_IMPL *session, WT_CURSOR_BTREE *cbt)
{
	WT_DECL_RET;
	WT_ITEM *logrec;
	WT_TXN *txn;
	WT_TXN_OP *op;

	txn = &session->txn;

	if (!FLD_ISSET(S2C(session)->log_flags, WT_CONN_LOG_ENABLED) ||
	    F_ISSET(session, WT_SESSION_NO_LOGGING) ||
	    F_ISSET(S2BT(session), WT_BTREE_NO_LOGGING))
		return (0);

	/* We'd better have a transaction. */
	WT_ASSERT(session,
	    F_ISSET(txn, WT_TXN_RUNNING) && F_ISSET(txn, WT_TXN_HAS_ID));

	WT_ASSERT(session, txn->mod_count > 0);
	op = txn->mod + txn->mod_count - 1;

	WT_RET(__txn_logrec_init(session));
	logrec = txn->logrec;

	switch (op->type) {
	case WT_TXN_OP_BASIC:
	case WT_TXN_OP_BASIC_TS:
		ret = __txn_op_log(session, logrec, op, cbt);
		break;
	case WT_TXN_OP_INMEM:
	case WT_TXN_OP_REF:
		/* Nothing to log, we're done. */
		break;
	case WT_TXN_OP_TRUNCATE_COL:
		ret = __wt_logop_col_truncate_pack(session, logrec,
		    op->fileid,
		    op->u.truncate_col.start, op->u.truncate_col.stop);
		break;
	case WT_TXN_OP_TRUNCATE_ROW:
		ret = __wt_logop_row_truncate_pack(session, txn->logrec,
		    op->fileid,
		    &op->u.truncate_row.start, &op->u.truncate_row.stop,
		    (uint32_t)op->u.truncate_row.mode);
		break;
	}
	return (ret);
}