lib/wsrep-lib
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Implemented thread service support.

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Added a wsrep::thread_service interface to allow application to
inject instrumented thread, mutex and condition variable implementation
for provider.

The interface is defined in include/wsrep/thread_service.hpp.
Sample implementation is provided in dbsim/db_threads.[h|c]pp.

This patch will also clean up some remaining dependencies to
wsrep-API compilation units so that the dependency to wsrep-API
is header only. This will extending the provider support to
later wsrep-API versions.
This commit is contained in:
Teemu Ollakka
2019-02-16 17:09:18 +02:00
parent 477a71dd46
commit eb4cf86c1e
33 changed files with 1821 additions and 58 deletions
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32
include/wsrep/provider.hpp
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@ -25,6 +25,7 @@
#include "buffer.hpp"
#include "client_id.hpp"
#include "transaction_id.hpp"
#include "compiler.hpp"
#include <cassert>
#include <cstring>
@ -33,10 +34,17 @@
#include <vector>
#include <ostream>
/**
* Empty provider magic. If none provider is passed to make_provider(),
* a dummy provider is loaded.
*/
#define WSREP_LIB_PROVIDER_NONE "none"
namespace wsrep
{
class server_state;
class high_priority_service;
class thread_service;
class stid
{
public:
@ -186,7 +194,6 @@ namespace wsrep
class provider
{
public:
class status_variable
{
public:
@ -404,16 +411,31 @@ namespace wsrep
*/
virtual void* native() const = 0;
/**
* Services argument passed to make_provider. This struct contains
* optional services which are passed to the provider.
*/
struct services
{
wsrep::thread_service* thread_service;
services()
: thread_service()
{
}
};
/**
* Create a new provider.
*
* @param provider_spec Provider specification
* @param provider_options Initial options to provider
* @param thread_service Optional thread service implementation.
*/
static provider* make_provider(
wsrep::server_state&,
const std::string& provider_spec,
const std::string& provider_options);
static provider* make_provider(wsrep::server_state&,
const std::string& provider_spec,
const std::string& provider_options,
const wsrep::provider::services& services
= wsrep::provider::services());
protected:
wsrep::server_state& server_state_;
};