生产者消费者问题

来源：互联网发布：网络加油站网站编辑：程序博客网时间：2024/05/01 22:41
#include <stdio.h> #include <windows.h>  #include<iostream>#include <process.h>  #include <time.h>using namespace std;BOOL SetConsoleColor(WORD wAttributes){HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);if (hConsole == INVALID_HANDLE_VALUE)return FALSE;return SetConsoleTextAttribute(hConsole, wAttributes);}HANDLE Signal_full;HANDLE Signal_empty;CRITICAL_SECTION g_cs;const int products=15;const int NUMBER = 10;int cache[NUMBER];int pro_i=0, con_j=0;int cur_product = 1;unsigned int __stdcall ProducerThreadFun(void* pM){//int ID = *(int*)pM;while (true){WaitForSingleObject(Signal_empty, INFINITE);//生产一个物品EnterCriticalSection(&g_cs);if (cur_product > products){LeaveCriticalSection(&g_cs);break;}cache[pro_i] = cur_product;cout << "编号为 " << GetCurrentThreadId() << " 的生产者在 " << pro_i << " 生产了物品 " << cur_product << endl;pro_i = (pro_i + 1) % NUMBER;++cur_product;LeaveCriticalSection(&g_cs);ReleaseSemaphore(Signal_full, 1, NULL);Sleep(rand() % 100 + 1);}cout << "编号为 " << GetCurrentThreadId() << " 的生产者结束线程\n";return 0;}unsigned int __stdcall ConsumerThreadFun(void* pM){while (true){WaitForSingleObject(Signal_full, 3000);//消费一个物品EnterCriticalSection(&g_cs);if (cur_product > products){LeaveCriticalSection(&g_cs);break;}cout << "    编号为 " << GetCurrentThreadId() << " 的消费者在 " << con_j << " 消费了物品 " << cache[con_j] << endl;con_j = (con_j + 1) % NUMBER;LeaveCriticalSection(&g_cs);ReleaseSemaphore(Signal_empty, 1, NULL);Sleep(rand() % 100 + 1);}cout << "    编号为 " << GetCurrentThreadId() << " 的消费者结束线程\n";return 0;}int _tmain(int argc, _TCHAR* argv[]){srand(time(NULL));//2个生产者、5个消费者、10个缓存、生存15个物品HANDLE threads[7];Signal_full = CreateSemaphore(NULL, 0, 10, NULL);Signal_empty = CreateSemaphore(NULL,10, 10, NULL);InitializeCriticalSection(&g_cs);for (int i = 0; i < 2; ++i)threads[i] = (HANDLE)_beginthreadex(NULL, 0, ProducerThreadFun, NULL, 0, NULL);for (int i = 2; i < 7;++i)threads[i] = (HANDLE)_beginthreadex(NULL, 0, ConsumerThreadFun, NULL, 0, NULL);WaitForMultipleObjects(7, threads, TRUE, INFINITE);//Sleep(5000);for (int i = 0; i < 7; ++i)CloseHandle(threads[i]);CloseHandle(Signal_full);CloseHandle(Signal_empty);DeleteCriticalSection(&g_cs);cout << endl;system("pause");return 0;}
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