thin-provisioning-tools/dbg-lib/array_block_dumper.h
Ming-Hung Tsai a81cef4467 [dbg] Pull out common code into dbg-lib
- Modularize common routines
- Extract the block_dumper interface for displaying blocks
- Remove inheritance from show_traits
2021-02-21 01:04:35 +08:00

54 lines
1.5 KiB
C++

#include "dbg-lib/block_dumper.h"
#include "dbg-lib/output_formatter.h"
#include "persistent-data/data-structures/array_block.h"
//----------------------------------------------------------------
namespace dbg {
using persistent_data::block_manager;
using persistent_data::array_block;
template <typename ShowTraits>
class array_block_dumper : public block_dumper {
public:
array_block_dumper(typename ShowTraits::value_trait::ref_counter rc)
: rc_(rc) {
}
virtual void show(block_manager::read_ref &rr, std::ostream &out) {
rblock b(rr, rc_);
show_array_entries(b, out);
}
private:
typedef array_block<typename ShowTraits::value_trait, block_manager::read_ref> rblock;
void show_array_entries(rblock const& b, std::ostream &out) {
formatter::ptr f = create_xml_formatter();
uint32_t nr_entries = b.nr_entries();
field(*f, "max_entries", b.max_entries());
field(*f, "nr_entries", nr_entries);
field(*f, "value_size", b.value_size());
for (unsigned i = 0; i < nr_entries; i++) {
formatter::ptr f2 = create_xml_formatter();
ShowTraits::show(f2, "value", b.get(i));
f->child(boost::lexical_cast<std::string>(i), f2);
}
f->output(out, 0);
}
typename ShowTraits::value_trait::ref_counter rc_;
};
template <typename ShowTraits>
block_dumper::ptr
create_array_block_dumper(typename ShowTraits::value_trait::ref_counter rc) {
return block_dumper::ptr(new array_block_dumper<ShowTraits>(rc));
}
}
//----------------------------------------------------------------