Пример #1
0
/*
 * __wt_close --
 *	Close a file handle.
 */
int
__wt_close(WT_SESSION_IMPL *session, WT_FH **fhp)
{
	WT_CONNECTION_IMPL *conn;
	WT_DECL_RET;
	WT_FH *fh;
	uint64_t bucket;

	conn = S2C(session);

	if (*fhp == NULL)
		return (0);
	fh = *fhp;
	*fhp = NULL;

	__wt_spin_lock(session, &conn->fh_lock);
	if (fh == NULL || fh->ref == 0 || --fh->ref > 0) {
		__wt_spin_unlock(session, &conn->fh_lock);
		return (0);
	}

	/* Remove from the list. */
	bucket = fh->name_hash % WT_HASH_ARRAY_SIZE;
	WT_CONN_FILE_REMOVE(conn, fh, bucket);
	(void)WT_ATOMIC_SUB4(conn->open_file_count, 1);

	__wt_spin_unlock(session, &conn->fh_lock);

	/* Discard the memory.
	 * Note: For directories, we do not open valid directory handles on
	 * windows since it is not possible to sync a directory
	 */
	if (fh->filehandle != INVALID_HANDLE_VALUE &&
	    CloseHandle(fh->filehandle) == 0) {
		ret = __wt_errno();
		__wt_err(session, ret, "CloseHandle: %s", fh->name);
	}

	if (fh->filehandle_secondary != INVALID_HANDLE_VALUE &&
	    CloseHandle(fh->filehandle_secondary) == 0) {
		ret = __wt_errno();
		__wt_err(session, ret, "CloseHandle: secondary: %s", fh->name);
	}

	__wt_free(session, fh->name);
	__wt_free(session, fh);
	return (ret);
}
Пример #2
0
/*
 * __wt_close --
 *	Close a file handle.
 */
int
__wt_close(WT_SESSION_IMPL *session, WT_FH **fhp)
{
    WT_CONNECTION_IMPL *conn;
    WT_DECL_RET;
    WT_FH *fh;
    uint64_t bucket;

    conn = S2C(session);

    if (*fhp == NULL)
        return (0);
    fh = *fhp;
    *fhp = NULL;

    /* Track handle-close as a file operation, so open and close match. */
    WT_RET(__wt_verbose(
               session, WT_VERB_FILEOPS, "%s: handle-close", fh->name));

    /*
     * If the reference count hasn't gone to 0, or if it's an in-memory
     * object, we're done.
     *
     * Assert the reference count is correct, but don't let it wrap.
     */
    __wt_spin_lock(session, &conn->fh_lock);
    WT_ASSERT(session, fh->ref > 0);
    if ((fh->ref > 0 && --fh->ref > 0) || F_ISSET(fh, WT_FH_IN_MEMORY)) {
        __wt_spin_unlock(session, &conn->fh_lock);
        return (0);
    }

    /* Remove from the list. */
    bucket = fh->name_hash % WT_HASH_ARRAY_SIZE;
    WT_CONN_FILE_REMOVE(conn, fh, bucket);
    (void)__wt_atomic_sub32(&conn->open_file_count, 1);

    __wt_spin_unlock(session, &conn->fh_lock);

    /* Discard underlying resources. */
    ret = fh->fh_close(session, fh);

    __wt_free(session, fh->name);
    __wt_free(session, fh);

    return (ret);
}