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Check local sequential consistency in dbsim

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- Release commit time critical section in callback
- Check the consistency inside commit order critical section

Other: Add 2pc switch to dbsim
This commit is contained in:
Teemu Ollakka
2024-11-28 12:33:21 +02:00
parent 3de594b662
commit 7994288534
8 changed files with 116 additions and 43 deletions
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25
dbsim/db_server.hpp
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@ -61,6 +61,27 @@ namespace db
wsrep::high_priority_service* streaming_applier_service();
void log_state_change(enum wsrep::server_state::state,
enum wsrep::server_state::state);
/* Sequential consistency checks */
struct commit_critical_section
{
wsrep::unique_lock<wsrep::default_mutex> lock;
uint64_t commit_seqno;
commit_critical_section(wsrep::default_mutex& mutex,
uint64_t& next_commit_seqno)
: lock{ mutex }
, commit_seqno{ ++next_commit_seqno }
{
}
commit_critical_section(commit_critical_section&&) = default;
};
commit_critical_section get_commit_critical_section() {
return { commit_mutex_, next_commit_seqno_ };
}
/* Check that commits remain sequential according commit_seqno.
* This method must be called inside commit order critical section. */
void check_sequential_consistency(wsrep::client_id client_id,
uint64_t commit_seqno);
private:
void start_client(size_t id);
@ -76,6 +97,10 @@ namespace db
std::vector<boost::thread> appliers_;
std::vector<std::shared_ptr<db::client>> clients_;
std::vector<boost::thread> client_threads_;
wsrep::default_mutex commit_mutex_;
uint64_t next_commit_seqno_;
uint64_t committed_seqno_;
};
}