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.

{
    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);
}

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

Referenced by __rec_open().

__rec_sync()

int __rec_sync	(	DB *	dbp,
		u_int	flags
	)		const

Definition at line 107 of file rec_close.c.

{
    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);
}

References __bt_sync(), DBT::data, dbp, 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().