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);
}