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Some btree visitor tidying.

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Introduce node_location to replace the long list of parameters.  Also
add a depth field to keep track of the depth from root.
This commit is contained in:
Joe Thornber
2013-05-01 16:16:23 +01:00
parent 1884233a2b
commit 5d0b23beea
7 changed files with 109 additions and 95 deletions
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32
thin-provisioning/metadata_dumper.cc
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@@ -27,6 +27,7 @@ namespace {
class mappings_extractor : public btree<2, block_traits>::visitor {
public:
typedef boost::shared_ptr<mappings_extractor> ptr;
typedef btree_detail::node_location node_location;
typedef btree_checker<2, block_traits> checker;
mappings_extractor(uint64_t dev_id, emitter::ptr e,
@@ -41,20 +42,20 @@ namespace {
found_errors_(false) {
}
bool visit_internal(unsigned level, bool sub_root, boost::optional<uint64_t> key,
bool visit_internal(node_location const &loc,
btree_detail::node_ref<uint64_traits> const &n) {
if (!checker_.visit_internal(level, sub_root, key, n)) {
if (!checker_.visit_internal(loc, n)) {
found_errors_ = true;
return false;
}
return (sub_root && key) ? (*key == dev_id_) : true;
return (loc.sub_root && loc.key) ? (*loc.key == dev_id_) : true;
}
bool visit_internal_leaf(unsigned level, bool sub_root, boost::optional<uint64_t> key,
bool visit_internal_leaf(node_location const &loc,
btree_detail::node_ref<uint64_traits> const &n) {
if (!checker_.visit_internal_leaf(level, sub_root, key, n)) {
if (!checker_.visit_internal_leaf(loc, n)) {
found_errors_ = true;
return false;
}
@@ -62,9 +63,9 @@ namespace {
return true;
}
bool visit_leaf(unsigned level, bool sub_root, boost::optional<uint64_t> maybe_key,
bool visit_leaf(node_location const &loc,
btree_detail::node_ref<block_traits> const &n) {
if (!checker_.visit_leaf(level, sub_root, maybe_key, n)) {
if (!checker_.visit_leaf(loc, n)) {
found_errors_ = true;
return false;
}
@@ -136,6 +137,7 @@ namespace {
class details_extractor : public btree<1, device_details_traits>::visitor {
public:
typedef typename btree<1, device_details_traits>::visitor::node_location node_location;
typedef boost::shared_ptr<details_extractor> ptr;
typedef btree_checker<1, device_details_traits> checker;
@@ -144,19 +146,19 @@ namespace {
checker_(counter_, false) {
}
bool visit_internal(unsigned level, bool sub_root, boost::optional<uint64_t> key,
bool visit_internal(node_location const &loc,
btree_detail::node_ref<uint64_traits> const &n) {
return checker_.visit_internal(level, sub_root, key, n);
return checker_.visit_internal(loc, n);
}
bool visit_internal_leaf(unsigned level, bool sub_root, boost::optional<uint64_t> key,
bool visit_internal_leaf(node_location const &loc,
btree_detail::node_ref<uint64_traits> const &n) {
return checker_.visit_internal_leaf(level, sub_root, key, n);
return checker_.visit_internal_leaf(loc, n);
}
bool visit_leaf(unsigned level, bool sub_root, boost::optional<uint64_t> maybe_key,
bool visit_leaf(node_location const &loc,
btree_detail::node_ref<device_details_traits> const &n) {
if (!checker_.visit_leaf(level, sub_root, maybe_key, n))
if (!checker_.visit_leaf(loc, n))
return false;
for (unsigned i = 0; i < n.get_nr_entries(); i++)
@@ -198,7 +200,7 @@ thin_provisioning::metadata_dump(metadata::ptr md, emitter::ptr e, bool repair)
details_extractor::ptr de(new details_extractor);
md->details_->visit(de);
md->details_->visit_depth_first(de);
if (de->corruption() && !repair)
throw runtime_error("corruption in device details tree");
@@ -216,7 +218,7 @@ thin_provisioning::metadata_dump(metadata::ptr md, emitter::ptr e, bool repair)
dd.snapshotted_time_);
mappings_extractor::ptr me(new mappings_extractor(dev_id, e, md->metadata_sm_, md->data_sm_));
md->mappings_->visit(me);
md->mappings_->visit_depth_first(me);
if (me->corruption() && !repair) {
ostringstream out;