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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; version 2 of the License.
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 SIMBLOCKASYNCFILESYSTEM_H
#define SIMBLOCKASYNCFILESYSTEM_H
#include <pc.hpp>
#include <SimulatedBlock.hpp>
#include "Pool.hpp"
#include "AsyncFile.hpp"
#include "OpenFiles.hpp"
// Because one NDB Signal request can result in multiple requests to
// AsyncFile one class must be made responsible to keep track
// of all out standing request and when all are finished the result
// must be reported to the sending block.
class Ndbfs : public SimulatedBlock
{
public:
Ndbfs(Block_context&);
virtual ~Ndbfs();
virtual const char* get_filename(Uint32 fd) const;
protected:
BLOCK_DEFINES(Ndbfs);
// The signal processing functions
void execREAD_CONFIG_REQ(Signal* signal);
void execDUMP_STATE_ORD(Signal* signal);
void execFSOPENREQ(Signal* signal);
void execFSCLOSEREQ(Signal* signal);
void execFSWRITEREQ(Signal* signal);
void execFSREADREQ(Signal* signal);
void execFSSYNCREQ(Signal* signal);
void execFSAPPENDREQ(Signal* signal);
void execFSREMOVEREQ(Signal* signal);
void execSTTOR(Signal* signal);
void execCONTINUEB(Signal* signal);
bool scanningInProgress;
Uint16 newId();
private:
int forward(AsyncFile *file, Request* Request);
void report(Request* request, Signal* signal);
bool scanIPC(Signal* signal);
// Declared but not defined
Ndbfs(Ndbfs & );
void operator = (Ndbfs &);
// Used for uniqe number generation
Uint16 theLastId;
BlockReference cownref;
// Communication from files
MemoryChannel<Request> theFromThreads;
Pool<Request>* theRequestPool;
AsyncFile* createAsyncFile();
AsyncFile* getIdleFile();
Vector<AsyncFile*> theFiles; // List all created AsyncFiles
Vector<AsyncFile*> theIdleFiles; // List of idle AsyncFiles
OpenFiles theOpenFiles; // List of open AsyncFiles
BaseString theFileSystemPath;
BaseString theBackupFilePath;
// Statistics variables
Uint32 m_maxOpenedFiles;
// Limit for max number of AsyncFiles created
Uint32 m_maxFiles;
void readWriteRequest( int action, Signal * signal );
static Uint32 translateErrno(int aErrno);
};
class VoidFs : public SimulatedBlock
{
public:
VoidFs(Block_context&);
virtual ~VoidFs();
protected:
BLOCK_DEFINES(VoidFs);
// The signal processing functions
void execREAD_CONFIG_REQ(Signal* signal);
void execDUMP_STATE_ORD(Signal* signal);
void execFSOPENREQ(Signal* signal);
void execFSCLOSEREQ(Signal* signal);
void execFSWRITEREQ(Signal* signal);
void execFSREADREQ(Signal* signal);
void execFSSYNCREQ(Signal* signal);
void execFSAPPENDREQ(Signal* signal);
void execFSREMOVEREQ(Signal* signal);
void execSTTOR(Signal* signal);
private:
// Declared but not defined
VoidFs(VoidFs & );
void operator = (VoidFs &);
// Used for uniqe number generation
Uint32 c_maxFileNo;
};
#endif
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