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Execution context switching for high priority service.

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This commit is contained in:
Teemu Ollakka
2018-07-09 11:35:20 +03:00
parent 95dbab4c08
commit 8a1e76bcec
10 changed files with 77 additions and 12 deletions
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16
include/wsrep/high_priority_service.hpp
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@ -80,9 +80,24 @@ namespace wsrep
*/
virtual void after_apply() = 0;
/**
* Store global execution context for high priority service.
*/
virtual void store_globals() = 0;
/**
* Reset global execution context for high priority service.
*/
virtual void reset_globals() = 0;
/**
* Switch exection context to context of orig_hps.
*
* @param orig_hps Original high priority service.
*/
virtual void switch_execution_context(
wsrep::high_priority_service& orig_hps) = 0;
virtual int log_dummy_write_set(const ws_handle&, const ws_meta&) = 0;
virtual bool is_replaying() const = 0;
@ -102,6 +117,7 @@ namespace wsrep
, current_service_(current_service)
{
orig_service_.reset_globals();
current_service_.switch_execution_context(orig_service_);
current_service_.store_globals();
}
~high_priority_switch()

19
include/wsrep/server_service.hpp
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@ -34,13 +34,30 @@ namespace wsrep
wsrep::client_service&) = 0;
virtual void release_storage_service(wsrep::storage_service*) = 0;
/**
* Create an applier state for streaming transaction applying.
*
* @param orig_cs Reference to client service which is
* requesting a new streaming applier service
* instance.
*
* @return Pointer to streaming applier client state.
*/
virtual wsrep::high_priority_service*
streaming_applier_service() = 0;
streaming_applier_service(wsrep::client_service& orig_cs) = 0;
/**
* Create an applier state for streaming transaction applying.
*
* @param orig_hps Reference to high priority service which is
* requesting a new streaming applier service
* instance.
*
* @return Pointer to streaming applier client state.
*/
virtual wsrep::high_priority_service*
streaming_applier_service(wsrep::high_priority_service& orig_hps) = 0;
/**
* Release a client state allocated by either local_client_state()

1
include/wsrep/transaction_id.hpp
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@ -25,6 +25,7 @@ namespace wsrep
{ }
type get() const { return id_; }
static unsigned long long undefined() { return type(-1); }
bool is_undefined() const { return (id_ == type(-1)); }
bool operator<(const transaction_id& other) const
{
return (id_ < other.id_);