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Move init into a separate file

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This commit is contained in:
Vitaliy Filippov
2019-11-03 22:04:30 +03:00
parent f4705d81d7
commit 9babacb00a
5 changed files with 129 additions and 118 deletions
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blockstore.cpp
-97
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@@ -74,100 +74,3 @@ int blockstore::init_loop()
journal_init_reader = NULL;
return 0;
}
blockstore_init_meta::blockstore_init_meta(blockstore *bs)
{
this->bs = bs;
}
int blockstore_init_meta::read_loop()
{
if (metadata_read >= bs->meta_len)
{
return 0;
}
if (!metadata_buffer)
{
metadata_buffer = new uint8_t[2*bs->metadata_buf_size];
}
if (submitted)
{
struct io_uring_cqe *cqe;
io_uring_peek_cqe(bs->ring, &cqe);
if (cqe)
{
if (cqe->res < 0)
{
throw new std::runtime_error(
std::string("read metadata failed at offset ") + std::to_string(metadata_read) +
std::string(": ") + strerror(-cqe->res)
);
}
prev_done = cqe->res > 0 ? submitted : 0;
done_len = cqe->res;
metadata_read += cqe->res;
submitted = 0;
}
}
if (!submitted)
{
struct io_uring_sqe *sqe = io_uring_get_sqe(bs->ring);
if (!sqe)
{
throw new std::runtime_error("io_uring is full while trying to read metadata");
}
submit_iov = {
metadata_buffer + (prev == 1 ? bs->metadata_buf_size : 0),
bs->meta_len - metadata_read > bs->metadata_buf_size ? bs->metadata_buf_size : bs->meta_len - metadata_read,
};
io_uring_prep_readv(sqe, bs->meta_fd, &submit_iov, 1, bs->meta_offset + metadata_read);
io_uring_submit(bs->ring);
submitted = (prev == 1 ? 2 : 1);
prev = submitted;
}
if (prev_done)
{
assert(!(done_len % sizeof(clean_disk_entry)));
int count = done_len / sizeof(clean_disk_entry);
struct clean_disk_entry *entries = (struct clean_disk_entry*)(metadata_buffer + (prev_done == 1 ? bs->metadata_buf_size : 0));
// handle <count> entries
handle_entries(entries, count);
done_cnt += count;
prev_done = 0;
done_len = 0;
}
if (metadata_read >= bs->meta_len)
{
// metadata read finished
delete[] metadata_buffer;
metadata_buffer = NULL;
return 0;
}
return 1;
}
void blockstore_init_meta::handle_entries(struct clean_disk_entry* entries, int count)
{
for (unsigned i = 0; i < count; i++)
{
if (entries[i].oid.inode > 0)
{
allocator_set(bs->data_alloc, done_cnt+i, true);
bs->object_db[entries[i].oid] = (struct clean_entry){
entries[i].version,
(uint32_t)(entries[i].flags ? ST_CURRENT : ST_D_META_SYNCED),
done_cnt+i
};
}
}
}
blockstore_init_journal::blockstore_init_journal(blockstore *bs)
{
this->bs = bs;
}
int blockstore_init_journal::read_loop()
{
return 0;
}