rec_close.c File Reference

#include <sys/types.h>
#include <sys/uio.h>
#include <sys/mman.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <unistd.h>
#include "../include/db.h"
#include "recno.h"

Include dependency graph for rec_close.c:

Go to the source code of this file.

Functions
int	__rec_close (DB *dbp)
int	__rec_sync (DB *dbp, u_int flags) const

Function Documentation

__rec_close()

int __rec_close

(

DB *

dbp

)

Definition at line 60 of file rec_close.c.

References __bt_close(), __rec_sync(), _btree::bt_mp, _btree::bt_msize, _btree::bt_pinned, _btree::bt_rfd, _btree::bt_rfp, _btree::bt_smap, F_ISSET, __db::internal, mpool_put(), NULL, R_CLOSEFP, R_INMEM, R_MEMMAPPED, RET_ERROR, RET_SUCCESS, and status.

Referenced by __rec_open().

{
 BTREE *t;
 int status;

 t = dbp->internal;

 /* Toss any page pinned across calls. */
 if (t->bt_pinned != NULL) {
 mpool_put(t->bt_mp, t->bt_pinned, 0);
 t->bt_pinned = NULL;
 }

 if (__rec_sync(dbp, 0) == RET_ERROR)
 return (RET_ERROR);

 /* Committed to closing. */
 status = RET_SUCCESS;
 if (F_ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize))
 status = RET_ERROR;

 if (!F_ISSET(t, R_INMEM)) {
 if (F_ISSET(t, R_CLOSEFP)) {
 if (fclose(t->bt_rfp))
 status = RET_ERROR;
 } else
 if (close(t->bt_rfd))
 status = RET_ERROR;
 }

 if (__bt_close(dbp) == RET_ERROR)
 status = RET_ERROR;

 return (status);
}

__rec_sync()

int __rec_sync	(	DB *	dbp,
		u_int	flags
	)		const

Definition at line 107 of file rec_close.c.

References __bt_sync(), DBT::data, F_CLR, F_ISSET, __db::internal, MAX_REC_NUMBER, mpool_put(), NULL, R_EOF, R_FIRST, R_FIXLEN, R_INMEM, R_MODIFIED, R_NEXT, R_RDONLY, R_RECNOSYNC, RET_ERROR, RET_SUCCESS, DBT::size, and status.

Referenced by __rec_close(), and __rec_open().

{
 struct iovec iov[2];
 BTREE *t;
 DBT data, key;
 off_t off;
 recno_t scursor, trec;
 int status;

 t = dbp->internal;

 /* Toss any page pinned across calls. */
 if (t->bt_pinned != NULL) {
 mpool_put(t->bt_mp, t->bt_pinned, 0);
 t->bt_pinned = NULL;
 }

 if (flags == R_RECNOSYNC)
 return (__bt_sync(dbp, 0));

 if (F_ISSET(t, R_RDONLY | R_INMEM) || !F_ISSET(t, R_MODIFIED))
 return (RET_SUCCESS);

 /* Read any remaining records into the tree. */
 if (!F_ISSET(t, R_EOF) && t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
 return (RET_ERROR);

 /* Rewind the file descriptor. */
 if (lseek(t->bt_rfd, (off_t)0, SEEK_SET) != 0)
 return (RET_ERROR);

 /* Save the cursor. */
 scursor = t->bt_cursor.rcursor;

 key.size = sizeof(recno_t);
 key.data = &trec;

 if (F_ISSET(t, R_FIXLEN)) {
 /*
 * We assume that fixed length records are all fixed length.
 * Any that aren't are either EINVAL'd or corrected by the
 * record put code.
 */
 status = (dbp->seq)(dbp, &key, &data, R_FIRST);
 while (status == RET_SUCCESS) {
 if ((size_t) write(t->bt_rfd, data.data, data.size) != data.size)
 return (RET_ERROR);
 status = (dbp->seq)(dbp, &key, &data, R_NEXT);
 }
 } else {
 iov[1].iov_base = &t->bt_bval;
 iov[1].iov_len = 1;

 status = (dbp->seq)(dbp, &key, &data, R_FIRST);
 while (status == RET_SUCCESS) {
 iov[0].iov_base = data.data;
 iov[0].iov_len = data.size;
 if ((size_t) writev(t->bt_rfd, iov, 2) != data.size + 1)
 return (RET_ERROR);
 status = (dbp->seq)(dbp, &key, &data, R_NEXT);
 }
 }

 /* Restore the cursor. */
 t->bt_cursor.rcursor = scursor;

 if (status == RET_ERROR)
 return (RET_ERROR);
 if ((off = lseek(t->bt_rfd, (off_t)0, SEEK_CUR)) == -1)
 return (RET_ERROR);
 if (ftruncate(t->bt_rfd, off))
 return (RET_ERROR);
 F_CLR(t, R_MODIFIED);
 return (RET_SUCCESS);
}