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* Copyright (c) 2010, Joseph Daly <skinny.moey@gmail.com>
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Joseph Daly nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef PLUGIN_LOGGING_STATS_SCOREBOARD_H
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#define PLUGIN_LOGGING_STATS_SCOREBOARD_H
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#include "scoreboard_slot.h"
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#include <drizzled/session.h>
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Scoreboard(uint32_t in_number_sessions, uint32_t in_number_buckets);
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* Locates a ScoreboardSlot that is not in use, marks the slot
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* as being used and returns a pointer to it. The caller can
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* update individual statistics via the pointer without having
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* to lock or worry about concurrent updates.
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* @param Pointer to the session
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* @return Pointer to the ScoreboardSlot whose individual statistics
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ScoreboardSlot* findScoreboardSlotToLog(drizzled::Session *session);
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* Resets the ScoreboardSlot this session was using. The pointer
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* returned is a copy of the ScoreboardSlot that has now been
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* reclaimed. This must be deallocated by the caller, when the caller
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* is finished. This allows cumulative collection of statistics.
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* @param Pointer to the session
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* @return Pointer to a copy of the ScoreboardSlot that has been
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ScoreboardSlot* findAndResetScoreboardSlot(drizzled::Session *session);
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uint32_t getNumberBuckets()
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return number_buckets;
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std::vector<pthread_rwlock_t* >* getVectorOfScoreboardLocks()
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return &vector_of_scoreboard_locks;
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std::vector<std::vector<ScoreboardSlot* >* >* getVectorOfScoreboardVectors()
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return &vector_of_scoreboard_vectors;
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static const int32_t UNINITIALIZED= -1;
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uint32_t number_sessions;
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uint32_t number_buckets;
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std::vector<std::vector<ScoreboardSlot* >* > vector_of_scoreboard_vectors;
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std::vector<pthread_rwlock_t* > vector_of_scoreboard_locks;
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#endif /* PLUGIN_LOGGING_STATS_SCOREBOARD_H */