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[era/metadata.{h,cc}] Support creation of new metadata

This commit is contained in:
Joe Thornber 2014-08-21 11:20:43 +01:00
parent bf1b65e62f
commit 85ab149685
2 changed files with 26 additions and 2 deletions
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27
era/metadata.cc
View File

@ -16,14 +16,22 @@ namespace {
transaction_manager::ptr tm(new transaction_manager(bm, sm));
return tm;
}
void
copy_space_maps(space_map::ptr lhs, space_map::ptr rhs) {
for (block_address b = 0; b < rhs->get_nr_blocks(); b++) {
uint32_t count = rhs->get_count(b);
if (count > 0)
lhs->set_count(b, rhs->get_count(b));
}
}
}
metadata::metadata(block_manager<>::ptr bm, open_type ot)
{
switch (ot) {
case CREATE:
// finish
throw runtime_error("not imlemented");
create_metadata(bm);
break;
case OPEN:
@ -37,6 +45,21 @@ metadata::metadata(block_manager<>::ptr bm, block_address metadata_snap)
open_metadata(bm);
}
void
metadata::create_metadata(block_manager<>::ptr bm)
{
tm_ = open_tm(bm);
space_map::ptr core = tm_->get_sm();
metadata_sm_ = create_metadata_sm(tm_, tm_->get_bm()->get_nr_blocks());
copy_space_maps(metadata_sm_, core);
tm_->set_sm(metadata_sm_);
writeset_tree_ = writeset_tree::ptr(new writeset_tree(tm_, era_detail_traits::ref_counter(tm_)));
era_array_ = era_array::ptr(new era_array(tm_,
uint32_traits::ref_counter()));
}
void
metadata::open_metadata(block_manager<>::ptr bm, block_address loc)
{

1
era/metadata.h
View File

@ -39,6 +39,7 @@ namespace era {
era_array::ptr era_array_;
private:
void create_metadata(block_manager<>::ptr bm);
void open_metadata(block_manager<>::ptr bm,
block_address loc = SUPERBLOCK_LOCATION);