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Support inmemory journal

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This commit is contained in:
Vitaliy Filippov
2019-11-28 18:06:50 +03:00
parent e1ac4dba23
commit 9fa0d3325f
11 changed files with 110 additions and 29 deletions
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blockstore_read.cpp
+12 -1
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@@ -18,6 +18,16 @@ int blockstore::fulfill_read_push(blockstore_operation *op, uint64_t &fulfilled,
memset((uint8_t*)op->buf + cur_start - op->offset, 0, cur_end - cur_start);
return 1;
}
if (journal.inmemory && IS_JOURNAL(item_state))
{
iovec v = {
(uint8_t*)op->buf + cur_start - op->offset,
cur_end - cur_start
};
op->read_vec[cur_start] = v;
memcpy(v.iov_base, journal.buffer + item_location + cur_start - item_start, v.iov_len);
return 1;
}
BS_SUBMIT_GET_SQE(sqe, data);
data->iov = (struct iovec){
(uint8_t*)op->buf + cur_start - op->offset,
@@ -25,6 +35,7 @@ int blockstore::fulfill_read_push(blockstore_operation *op, uint64_t &fulfilled,
};
// FIXME: use simple std::vector instead of map for read_vec
op->read_vec[cur_start] = data->iov;
op->pending_ops++;
my_uring_prep_readv(
sqe,
IS_JOURNAL(item_state) ? journal.fd : data_fd,
@@ -90,6 +101,7 @@ int blockstore::dequeue_read(blockstore_operation *read_op)
return 1;
}
uint64_t fulfilled = 0;
read_op->pending_ops = 0;
if (dirty_found)
{
while (dirty_it->first.oid == read_op->oid)
@@ -137,7 +149,6 @@ int blockstore::dequeue_read(blockstore_operation *read_op)
return 1;
}
read_op->retval = 0;
read_op->pending_ops = read_op->read_vec.size();
return 1;
}