// ------------------------------- // // -------- Start of File -------- // // ------------------------------- // // ----------------------------------------------------------- // // C++ Source Code File Name: testprog.cpp // Compiler Used: MSVC40, egcs-2.90.29, HP CPP 10.24 // Produced By: Doug Gaer // File Creation Date: 03/25/2000 // Date Last Modified: 05/26/2000 // Copyright (c) 2000 Douglas M. Gaer // ----------------------------------------------------------- // // ------------- Program Description and Details ------------- // // ----------------------------------------------------------- // /* The VBD and VBS C++ classes are copyright (c) 1997 and 2000 by Douglas M. Gaer. All those who put this code or its derivatives in a commercial product MUST mention this copyright in their documentation for users of the products in which this code or its derivative classes are used. Otherwise, you have the freedom to redistribute verbatim copies of this source code, adapt it to your specific needs, or improve the code and release your improvements to the public provided that the modified files carry prominent notices stating that you changed the files and the date of any change. THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. THE ENTIRE RISK OF THE QUALITY AND PERFORMANCE OF THIS SOFTWARE IS WITH YOU. SHOULD ANY ELEMENT OF THIS SOFTWARE PROVE DEFECTIVE, YOU WILL ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION. Test program used to the basic functionality of the Thread Pool class. */ // ----------------------------------------------------------- // #include <iostream.h> #include "thrpool.h" #include "vthreadt.h" void PausePrg() // Pause the program and wait for the user to press enter. { // Pause the program until enter is pressed cout << endl; cout << "Press Enter to continue...\n"; cin.get(); } void ScrollForward(thrPool &pool) { cout << "Walking through the pool..." << endl; thrPoolNode *ptr = pool.GetHead(); while(ptr) { cout << (char)ptr->GetThreadPtr()->GetObjectID() << ' '; ptr = ptr->GetNext(); } cout << endl; } void RewindPool(thrPool &pool) { cout << "Walking through the pool in a backward direction..." << endl; thrPoolNode *ptr = pool.GetTail(); // Walk through the pool in a backward direction while(ptr) { cout << (char)ptr->GetThreadPtr()->GetObjectID() << ' '; ptr = ptr->GetPrev(); } cout << endl; } int main() { thrPool pool; thrPoolNode *ptr; cout << "Loading data elements into the pool..." << endl; thrPoolNode *na = new thrPoolNode; thrPoolNode *nb = new thrPoolNode; thrPoolNode *nc = new thrPoolNode; thrPoolNode *nd = new thrPoolNode; thrPoolNode *n1 = new thrPoolNode; thrPoolNode *n2 = new thrPoolNode; thrPoolNode *n3 = new thrPoolNode; thrPoolNode *n4 = new thrPoolNode; // Allocating some memory buffers const unsigned num_blocks = 9; vbThread_t *buf[num_blocks]; unsigned i; for(i = 0; i < num_blocks; i++) { buf[i] = new vbThread_t; // Set an arbitary object ID stating starting with ASCII character 'A' buf[i]->SetObjectID(65+i); } na->SetThreadPtr(buf[0]); nb->SetThreadPtr(buf[1]); nc->SetThreadPtr(buf[2]); nd->SetThreadPtr(buf[3]); // Load some pool elements pool.InsertAfter(pool.GetHead(), na); pool.InsertAfter(na, nb); pool.InsertAfter(nb, nc); pool.InsertAfter(nc, nd); n1->SetThreadPtr(buf[4]); n2->SetThreadPtr(buf[5]); n3->SetThreadPtr(buf[6]); n4->SetThreadPtr(buf[7]); // Testing insert functions pool.InsertBefore(na, n1); pool.InsertBefore(nc, n2); pool.InsertAfter(nb, n3); pool.InsertAfter(nd, n4); // Reordering the pool pool.MoveToBack(na); pool.MoveAfter(na, nc); pool.MoveBefore(nc, nb); pool.MoveAfter(nc, nd); pool.MoveAfter(nd, n2); pool.MoveBefore(n2, n1); pool.MoveAfter(n2, n3); pool.MoveAfter(n3, n4); ScrollForward(pool); RewindPool(pool); PausePrg(); cout << "Adding another item to the pool..." << endl; ptr = pool.AddThread(buf[8]); ScrollForward(pool); PausePrg(); cout << "Moving pool item to the front of the pool" << endl; pool.MoveToFront(ptr); ScrollForward(pool); cout << "Moving item to the back of the pool..." << endl; pool.MoveToBack(ptr); ScrollForward(pool); PausePrg(); cout << "Removing the head of the pool..." << endl; ptr = pool.GetHead(); pool.RemoveNode(ptr); ScrollForward(pool); cout << "Removing the tail of the pool..." << endl; ptr = pool.GetTail(); pool.RemoveNode(ptr); ScrollForward(pool); PausePrg(); cout << "Testing for memory leaks..." << endl; unsigned len = sizeof(vbThread_t); const unsigned num_to_allocate = 1000; // 1000 * 1000; const unsigned mem_bufs = (sizeof(thrPoolNode) + len) * num_to_allocate; cout << "Allocating " << mem_bufs << " bytes..." << endl; pool.ClearPool(); unsigned count1 = 0; unsigned count2 = 0; for(i = 0; i < num_to_allocate; ++i) { vbThread_t *sbuf = new vbThread_t; count1 += sizeof(sbuf); if(!sbuf) { cout << "Memory allocation error at " << (count1+count2) << " bytes" << endl; break; } count2 += sizeof(thrPoolNode); if(!pool.AddThread(sbuf)) { cout << "Memory allocation error at " << (count1+count2) << " bytes" << endl; break; } } cout << "Done" << endl; PausePrg(); cout << "Releasing memory allocated back to the heap..." << endl; while(!pool.IsEmpty()) { vbThread_t *t = pool.RemoveTail(); if(t) delete t; } pool.MakeEmpty(); PausePrg(); cout << "Exiting..." << endl; cout << endl; return 0; } // ----------------------------------------------------------- // // ------------------------------- // // --------- End of File --------- // // ------------------------------- //