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Implemented SR transaction rollback.

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This commit is contained in:
Teemu Ollakka
2018-07-10 14:01:41 +03:00
parent e916453e6d
commit 80ca03daaf
17 changed files with 362 additions and 91 deletions
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15
src/client_state.cpp
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@@ -36,6 +36,7 @@ void wsrep::client_state::close()
if (transaction_.active())
{
client_service_.bf_rollback();
transaction_.after_statement();
}
debug_log_state("close: leave");
}
@@ -421,7 +422,19 @@ void wsrep::client_state::state(
wsrep::unique_lock<wsrep::mutex>& lock WSREP_UNUSED,
enum wsrep::client_state::state state)
{
assert(wsrep::this_thread::get_id() == owning_thread_id_);
// For locally processing client states (local, toi, rsu)
// changing the state is allowed only from the owning thread.
// In high priority mode the processing thread however may
// change and we check only that store_globals() has been
// called by the current thread to gain ownership.
//
// Note that this check assumes that there is always a single
// thread per local client connection. This may not always
// hold and the sanity check mechanism may need to be revised.
assert((mode_ != m_high_priority &&
wsrep::this_thread::get_id() == owning_thread_id_) ||
(mode_ == m_high_priority &&
wsrep::this_thread::get_id() == current_thread_id_));
assert(lock.owns_lock());
static const char allowed[state_max_][state_max_] =
{