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/*-
* Copyright (c) 2014-2018 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __meta_btree_apply --
* Apply a function to all files listed in the metadata, apart from the
* metadata file.
*/
static inline int
__meta_btree_apply(WT_SESSION_IMPL *session, WT_CURSOR *cursor,
int (*file_func)(WT_SESSION_IMPL *, const char *[]),
int (*name_func)(WT_SESSION_IMPL *, const char *, bool *),
const char *cfg[])
{
WT_DECL_RET;
int t_ret;
const char *uri;
bool skip;
/*
* Accumulate errors but continue through to the end of the metadata.
*/
while ((t_ret = cursor->next(cursor)) == 0) {
if ((t_ret = cursor->get_key(cursor, &uri)) != 0 ||
strcmp(uri, WT_METAFILE_URI) == 0) {
WT_TRET(t_ret);
continue;
}
skip = false;
if (name_func != NULL &&
(t_ret = name_func(session, uri, &skip)) != 0) {
WT_TRET(t_ret);
continue;
}
if (file_func == NULL || skip || !WT_PREFIX_MATCH(uri, "file:"))
continue;
/*
* We need to pull the handle into the session handle cache
* and make sure it's referenced to stop other internal code
* dropping the handle (e.g in LSM when cleaning up obsolete
* chunks). Holding the schema lock isn't enough.
*
* Handles that are busy are skipped without the whole
* operation failing. This deals among other cases with
* checkpoint encountering handles that are locked (e.g., for
* bulk loads or verify operations).
*/
if ((t_ret = __wt_session_get_dhandle(
session, uri, NULL, NULL, 0)) != 0) {
WT_TRET_BUSY_OK(t_ret);
continue;
}
WT_SAVE_DHANDLE(session, WT_TRET(file_func(session, cfg)));
WT_TRET(__wt_session_release_dhandle(session));
}
WT_TRET_NOTFOUND_OK(t_ret);
return (ret);
}
/*
* __wt_meta_apply_all --
* Apply a function to all files listed in the metadata, apart from the
* metadata file.
*/
int
__wt_meta_apply_all(WT_SESSION_IMPL *session,
int (*file_func)(WT_SESSION_IMPL *, const char *[]),
int (*name_func)(WT_SESSION_IMPL *, const char *, bool *),
const char *cfg[])
{
WT_CURSOR *cursor;
WT_DECL_RET;
WT_ASSERT(session, F_ISSET(session, WT_SESSION_LOCKED_SCHEMA));
WT_RET(__wt_metadata_cursor(session, &cursor));
WT_SAVE_DHANDLE(session, ret =
__meta_btree_apply(session, cursor, file_func, name_func, cfg));
WT_TRET(__wt_metadata_cursor_release(session, &cursor));
return (ret);
}
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