// ------------------------------- // // -------- 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; } // ----------------------------------------------------------- // // ------------------------------- // // --------- End of File --------- // // ------------------------------- //