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/* Copyright (C) 2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef NdbEventOperationImpl_H
#define NdbEventOperationImpl_H
#include <NdbEventOperation.hpp>
#include <signaldata/SumaImpl.hpp>
#include <transporter/TransporterDefinitions.hpp>
class NdbGlobalEventBufferHandle;
class NdbEventOperationImpl : public NdbEventOperation {
public:
NdbEventOperationImpl(NdbEventOperation &N,
Ndb *theNdb,
const char* eventName,
const int bufferLength);
~NdbEventOperationImpl();
NdbEventOperation::State getState();
int execute();
int stop();
NdbRecAttr *getValue(const char *colName, char *aValue, int n);
NdbRecAttr *getValue(const NdbColumnImpl *, char *aValue, int n);
static int wait(void *p, int aMillisecondNumber);
int next(int *pOverrun);
bool isConsistent();
Uint32 getGCI();
Uint32 getLatestGCI();
NdbDictionary::Event::TableEvent getEventType();
/*
getOperation();
getGCI();
getLogType();
*/
void print();
void printAll();
const NdbError & getNdbError() const;
NdbError m_error;
Ndb *m_ndb;
NdbEventImpl *m_eventImpl;
NdbGlobalEventBufferHandle *m_bufferHandle;
NdbRecAttr *theFirstPkAttrs[2];
NdbRecAttr *theCurrentPkAttrs[2];
NdbRecAttr *theFirstDataAttrs[2];
NdbRecAttr *theCurrentDataAttrs[2];
NdbEventOperation::State m_state;
Uint32 m_eventId;
int m_bufferId;
int m_bufferL;
SubTableData *sdata;
LinearSectionPtr ptr[3];
};
class NdbGlobalEventBuffer;
class NdbGlobalEventBufferHandle {
public:
NdbGlobalEventBufferHandle (int MAX_NUMBER_ACTIVE_EVENTS);
~NdbGlobalEventBufferHandle ();
//static NdbGlobalEventBufferHandle *init(int MAX_NUMBER_ACTIVE_EVENTS);
// returns bufferId 0-N if ok otherwise -1
int prepareAddSubscribeEvent(NdbEventOperationImpl *, int& hasSubscriber);
void unprepareAddSubscribeEvent(int bufferId);
void addSubscribeEvent(int bufferId,
NdbEventOperationImpl *ndbEventOperationImpl);
void unprepareDropSubscribeEvent(int bufferId);
int prepareDropSubscribeEvent(int bufferId, int& hasSubscriber);
void dropSubscribeEvent(int bufferId);
static int getDataL(const int bufferId,
SubTableData * &sdata,
LinearSectionPtr ptr[3],
int *pOverrun);
static int insertDataL(int bufferId,
const SubTableData * const sdata,
LinearSectionPtr ptr[3]);
static void latestGCI(int bufferId, Uint32 gci);
static Uint32 getLatestGCI();
static Uint32 getEventId(int bufferId);
void group_lock();
void group_unlock();
int wait(int aMillisecondNumber);
int m_bufferL;
private:
friend class NdbGlobalEventBuffer;
void addBufferId(int bufferId);
void dropBufferId(int bufferId);
struct NdbCondition *p_cond;
int m_nids;
int m_bufferIds[NDB_MAX_ACTIVE_EVENTS];
};
class NdbGlobalEventBuffer {
private:
friend class NdbGlobalEventBufferHandle;
void lockB(int bufferId);
void unlockB(int bufferId);
void group_lock();
void group_unlock();
void lock();
void unlock();
void add_drop_lock();
void add_drop_unlock();
NdbGlobalEventBuffer();
~NdbGlobalEventBuffer();
void real_remove(NdbGlobalEventBufferHandle *h);
void real_init(NdbGlobalEventBufferHandle *h,
int MAX_NUMBER_ACTIVE_EVENTS);
int real_prepareAddSubscribeEvent(NdbGlobalEventBufferHandle *h,
NdbEventOperationImpl *,
int& hasSubscriber);
void real_unprepareAddSubscribeEvent(int bufferId);
void real_addSubscribeEvent(int bufferId, void *ndbEventOperation);
void real_unprepareDropSubscribeEvent(int bufferId);
int real_prepareDropSubscribeEvent(int bufferId,
int& hasSubscriber);
void real_dropSubscribeEvent(int bufferId);
int real_getDataL(const int bufferId,
SubTableData * &sdata,
LinearSectionPtr ptr[3],
int *pOverrun);
int real_insertDataL(int bufferId,
const SubTableData * const sdata,
LinearSectionPtr ptr[3]);
void real_latestGCI(int bufferId, Uint32 gci);
Uint32 real_getLatestGCI();
int copy_data_alloc(const SubTableData * const f_sdata,
LinearSectionPtr f_ptr[3],
SubTableData * &t_sdata,
LinearSectionPtr t_ptr[3]);
int real_wait(NdbGlobalEventBufferHandle *, int aMillisecondNumber);
int hasData(int bufferId);
int ID (int bufferId) {return bufferId & 0xFF;};
int NO (int bufferId) {return bufferId >> 16;};
int NO_ID (int n, int bufferId) {return (n << 16) | ID(bufferId);};
Vector<NdbGlobalEventBufferHandle*> m_handlers;
// Global Mutex used for some things
NdbMutex *p_add_drop_mutex;
int m_group_lock_flag;
Uint32 m_latestGCI;
int m_no;
int m_max;
#define MAX_SUBSCRIBERS_PER_EVENT 16
struct BufItem {
// local mutex for each event/buffer
NdbMutex *p_buf_mutex;
Uint32 gId;
Uint32 eventType;
struct Data {
SubTableData *sdata;
LinearSectionPtr ptr[3];
} * data;
struct Ps {
NdbGlobalEventBufferHandle *theHandle;
int b;
int overrun;
int bufferempty;
//void *ndbEventOperation;
} ps[MAX_SUBSCRIBERS_PER_EVENT]; // only supports 1 subscriber so far
int subs;
int f;
int sz;
int max_sz;
};
BufItem *m_buf;
};
#endif
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