// ------------------------------- //
// -------- Start of File -------- //
// ------------------------------- //
// ----------------------------------------------------------- //
// C++ Source Code File Name: testprog.cpp
// Compiler Used: MSVC, BCC32, GCC, HPUX aCC, SOLARIS CC
// Produced By: glNET Software
// File Creation Date: 02/04/1997
// Date Last Modified: 05/25/2001
// Copyright (c) 2001 glNET Software
// ----------------------------------------------------------- //
// ------------- Program Description and Details ------------- //
// ----------------------------------------------------------- //
/*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
Program used to test the file locking primitives.
*/
// ----------------------------------------------------------- //
#include <iostream.h>
#include "gxdbase.h"
#include "gxdstats.h"
void PausePrg()
{
cout << endl;
cout << "Press enter to continue..." << endl;
cin.get();
}
void ClearInputStream(istream &s)
// Used to clear istream
{
char c;
s.clear();
while(s.get(c) && c != '\n') { ; }
}
void Menu()
{
cout << endl;
cout << "(c, C) Clear the file lock header" << endl;
cout << "(h, H) Help (prints this menu)" << endl;
cout << "(p) Toggle the file lock protect" << endl;
cout << "(P) Reset the file lock protect" << endl;
cout << "(q, Q) Quit this program" << endl;
cout << "(r) Read lock the file" << endl;
cout << "(R) Relase the read lock" << endl;
cout << "(s, S) Display the file stats" << endl;
cout << "(w) Write lock the file" << endl;
cout << "(W) Relase the write lock" << endl;
cout << endl;
}
void DisplayLockValues(gxFileLockHeader &flh)
{
cout << "File Lock Protect: " << (int)flh.file_lock_protect << endl;
cout << "File Read Lock Value: " << (int)flh.file_read_lock << endl;
cout << "File Write Lock Value: " << (int)flh.file_write_lock << endl;
}
int main()
{
gxDatabase *f = new gxDatabase;
cout << "Creating new file..." << endl;
const char *fname = "testfile.gxd";
if(!gxDatabase::Exists(fname)) {
cout << "Creating new file..." << endl;
f->Create(fname);
if(CheckError(f) != 0) return 1;
}
else {
cout << "Opening existing file..." << endl;
f->Open(fname);
if(CheckError(f) != 0) return 1;
}
char key;
Menu();
int rv = 1;
gxFileLockHeader lh;
gxUINT32 lock_protect;
while(rv) {
if (!cin) {
ClearInputStream(cin);
if (!cin) {
cout << "Input stream error" << endl;
return 0;
}
}
cout << '>';
cin >> key;
if (!cin) continue;
switch(key) {
case '?' : Menu(); break;
case 'c' : case 'C' : f->ResetFileLock(); break;
case 'h' : case 'H' : Menu(); break;
case 'q' : case 'Q' : rv = 0; break;
case 's' : case 'S' : DatabaseStats(f); break;
case 'p' :
lock_protect = 1;
f->Write(&lock_protect, sizeof(gxUINT32), sizeof(gxFileHeader));
CheckError(f);
f->ReadFileLockHdr(lh);
DisplayLockValues(lh);
break;
case 'P' :
lock_protect = (gxUINT32)0;
f->Write(&lock_protect, sizeof(gxUINT32), sizeof(gxFileHeader));
CheckError(f);
f->ReadFileLockHdr(lh);
DisplayLockValues(lh);
break;
case 'r' :
f->LockFile(gxDBASE_READLOCK);
CheckError(f);
f->ReadFileLockHdr(lh);
DisplayLockValues(lh);
break;
case 'R' :
f->UnlockFile(gxDBASE_READLOCK);
CheckError(f);
f->ReadFileLockHdr(lh);
DisplayLockValues(lh);
break;
case 'w' :
f->LockFile(gxDBASE_WRITELOCK);
CheckError(f);
f->ReadFileLockHdr(lh);
DisplayLockValues(lh);
break;
case 'W' :
f->UnlockFile(gxDBASE_WRITELOCK);
CheckError(f);
f->ReadFileLockHdr(lh);
DisplayLockValues(lh);
break;
default:
cout << "Unrecognized command" << endl;
break;
}
}
cout << "Exiting..." << endl;
f->Close();
if(CheckError(f) != 0) return 1;
delete f;
return 0;
}
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