66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
#include "era/metadata.h"
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#include "persistent-data/space-maps/core.h"
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using namespace era;
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//----------------------------------------------------------------
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namespace {
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unsigned const METADATA_CACHE_SIZ = 1024;
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// FIXME: duplication
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transaction_manager::ptr
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open_tm(block_manager<>::ptr bm) {
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space_map::ptr sm(new core_map(bm->get_nr_blocks()));
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sm->inc(SUPERBLOCK_LOCATION);
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transaction_manager::ptr tm(new transaction_manager(bm, sm));
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return tm;
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}
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void
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copy_space_maps(space_map::ptr lhs, space_map::ptr rhs) {
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for (block_address b = 0; b < rhs->get_nr_blocks(); b++) {
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uint32_t count = rhs->get_count(b);
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if (count > 0)
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lhs->set_count(b, rhs->get_count(b));
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}
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}
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}
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metadata::metadata(block_manager<>::ptr bm, open_type ot)
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{
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switch (ot) {
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case CREATE:
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// finish
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throw runtime_error("not imlemented");
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break;
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case OPEN:
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open_metadata(bm);
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break;
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}
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}
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metadata::metadata(block_manager<>::ptr bm, block_address metadata_snap)
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{
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open_metadata(bm);
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}
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void
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metadata::open_metadata(block_manager<>::ptr bm, block_address loc)
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{
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tm_ = open_tm(bm);
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sb_ = read_superblock(tm_->get_bm(), loc);
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writeset_tree_ = writeset_tree::ptr(new writeset_tree(tm_,
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sb_.writeset_tree_root,
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era_detail_traits::ref_counter(tm_)));
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era_array_ = era_array::ptr(new era_array(tm_,
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uint32_traits::ref_counter(),
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sb_.era_array_root,
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sb_.nr_blocks));
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}
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//----------------------------------------------------------------
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