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54a10a4293
When handling fatal signal, shut down Galera networking before printing out stack trace and writing core file. This is to achieve fail-silent semantics on crashes which may keep the process running for a long time, but not fully responding e.g. due to core dumping or symbol resolving. Also suppress all Galera/wsrep logging to avoid logging from background threads to garble crash information from signal handler. Notice that for fully fail-silent crash, Galera 26.4.19 is needed. Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
/* Copyright 2018 Codership Oy <info@codership.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef WSREP_SERVER_STATE_H
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#define WSREP_SERVER_STATE_H
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/* wsrep-lib */
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#include "wsrep/server_state.hpp"
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#include "wsrep/provider.hpp"
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/* implementation */
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#include "wsrep_server_service.h"
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#include "wsrep_mutex.h"
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#include "wsrep_condition_variable.h"
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class Wsrep_server_state : public wsrep::server_state
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{
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public:
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static void init_once(const std::string& name,
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const std::string& incoming_address,
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const std::string& address,
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const std::string& working_dir,
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const wsrep::gtid& initial_position,
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int max_protocol_version);
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static void destroy();
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static Wsrep_server_state& instance()
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{
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return *m_instance;
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}
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static bool is_inited()
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{
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return (m_instance != NULL);
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}
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static wsrep::provider& get_provider()
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{
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return instance().provider();
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}
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static bool has_capability(int capability)
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{
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return (get_provider().capabilities() & capability);
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}
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static void handle_fatal_signal();
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private:
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Wsrep_server_state(const std::string& name,
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const std::string& incoming_address,
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const std::string& address,
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const std::string& working_dir,
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const wsrep::gtid& initial_position,
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int max_protocol_version);
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~Wsrep_server_state();
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Wsrep_mutex m_mutex;
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Wsrep_condition_variable m_cond;
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Wsrep_server_service m_service;
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static Wsrep_server_state* m_instance;
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};
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#endif // WSREP_SERVER_STATE_H
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