The Fourth Dimension Space

枯叶北风寒，忽然年以残，念往昔，语默心酸。二十光阴无一物，韶光贱，寐难安； 不畏形影单，道途阻且慢，哪曲折，如渡飞湍。斩浪劈波酬壮志，同把酒，共言欢！ -如梦令

软件课程设计2 生产者消费者问题

#include <windows.h>
#include <conio.h>
#include <fstream>
#include <cstdio>
#include <cmath>
#include <deque>
using namespace std;
#define FULL 9
#define EMPTY 0
int const maxn = 64;

deque<int>prime;
int nProduce=0;
int nConsumer=0;

HANDLE hMutex;
HANDLE sFull;
HANDLE sEmpty;

struct ThreadInfo
{
    int id;//进程号
    char type;//类型
    int s;//start
    int t;//end
};

void PrimePriority(char *file);
void ReadThread(void *p);
void FindThread(void *p);
bool check(int n);//检查是否为素数



//main function
int main( int agrc, char* argv[] )
{
    char ch;
    prime.clear();
    while (true)
    {
        // Cleare screen
        system( "cls" );
        // display prompt info
        printf("*********************************************\n");
        printf("       1.Start test\n");
        printf("       2.Exit to Windows\n");
        printf("*********************************************\n");
        printf("Input your choice(1or2): ");
        // if the number inputed is error, retry!
        do{
            ch = (char)_getch();
        }while( ch != '1' && ch != '2');

        system ( "cls" );
        if ( ch == '1')
            PrimePriority("ex4.dat");
        else if ( ch == '2')
            return 0;
        printf("\nPress any key to finish this Program. \nThank you test this Proggram!\n");
        _getch();
    } //endvalue while
} //endvalue main

bool Cheak(int n)
{
    for(int i=2;i<n;i++)if(n%i==0)return false;
    return true;
}


void PrimePriority( char* file )
{
    //定义
    int nThread=0;
    int tem;
    HANDLE hThread[maxn];
    DWORD threadID[maxn];
    ThreadInfo threadInfo[maxn];
    //初始化
    nProduce=nConsumer=0;
    sFull=CreateSemaphore(NULL,0,9,"full");
    sEmpty=CreateSemaphore(NULL,9,9,"empty");
    hMutex=CreateMutex(NULL,false,"mutex");
    //文件读入
    ifstream  inFile;
    inFile.open(file);        //open file
    while ( inFile )
    {
        // read every reader/writer info
        inFile>>threadInfo[nThread].id;
        inFile>>threadInfo[nThread].type;
        inFile>>threadInfo[nThread].s;
        inFile>>threadInfo[nThread++].t;
        inFile.get();
    }
    //收集信息
    for(int i=0;i<nThread;i++)
    {
        char ch=threadInfo[i].type;
        if(ch=='D'||ch=='d')nConsumer++;
        if(ch=='W'||ch=='w')nProduce++;
    }
    //创建线程
    for(int i=0;i<nThread;i++)
    {
        char ch=threadInfo[i].type;
        if(ch=='D'||ch=='d')hThread[i] = CreateThread(
            NULL,0,(LPTHREAD_START_ROUTINE)ReadThread,&threadInfo[i],0,&threadID[i]);
        if(ch=='W'||ch=='w')hThread[i] = CreateThread(
            NULL,0,(LPTHREAD_START_ROUTINE)FindThread,&threadInfo[i],0,&threadID[i]);
    }
    WaitForMultipleObjects(nThread,hThread,true,INFINITE);
    printf("所有线程结束\n");
    CloseHandle(hMutex);
    CloseHandle(sEmpty);
    CloseHandle(sFull);

}// endvalue readerPriority



void ReadThread(void *p)
{
    //定义子Handle
    HANDLE h_Mutex;
    HANDLE s_Full;
    HANDLE s_Empty;
    //初始化
    s_Full = OpenSemaphore(SEMAPHORE_ALL_ACCESS,FALSE,"full");
    s_Empty = OpenSemaphore(SEMAPHORE_ALL_ACCESS,FALSE,"empty");
    h_Mutex = OpenMutex(MUTEX_ALL_ACCESS,FALSE,"mutex");

    int id,n;
    id = ((ThreadInfo*)p)->id;
    n = ((ThreadInfo*)p)->s;

    for(int i=0;i<n;i++)
    {

        //block one
        WaitForSingleObject(h_Mutex,INFINITE);
        if(nProduce==0 && prime.empty()){
            printf("生产者已结束，数组中为空，消费者线程被迫结束\n");
            ReleaseMutex(h_Mutex);//不要忘了释放
            break;
        }
        ReleaseMutex(h_Mutex);

        //block two
        WaitForSingleObject(s_Full,INFINITE);
        WaitForSingleObject(h_Mutex,INFINITE);

        printf("消费者线程 %d[%d] 取出了第 %d 个元素: %d \n",id,n,i+1,prime.front());
        prime.pop_front();
        printf("此时队列中的数字为:");
        for(deque<int>::iterator it=prime.begin();it!=prime.end();it++){
            printf("%d ",*it);
        }
        printf("\n\n\n");
        ReleaseMutex(h_Mutex);
        ReleaseSemaphore(s_Empty,1,NULL);
    }
    printf("消费者 %d 结束\n\n\n",id);
    nConsumer--;
}


void FindThread(void *p)
{
    //定义子Handle
    HANDLE h_Mutex;
    HANDLE s_Full;
    HANDLE s_Empty;
    //初始化
    s_Full = OpenSemaphore(SEMAPHORE_ALL_ACCESS,FALSE,"full");
    s_Empty = OpenSemaphore(SEMAPHORE_ALL_ACCESS,FALSE,"empty");
    h_Mutex = OpenMutex(MUTEX_ALL_ACCESS,FALSE,"mutex");

    int id,s,t;
    id = ((ThreadInfo*)p) -> id;
    s = ((ThreadInfo*)p) -> s;
    t= ((ThreadInfo*)p) -> t;

    int primeNum=0;
    for(int i=s;i<=t;i++)
        if(Cheak(i))primeNum++;
    int produceNum=0;

    for(int i=s;i<=t;i++)
    {
        if(Cheak(i))
        {
            WaitForSingleObject(h_Mutex,INFINITE);
            if(nConsumer==EMPTY && prime.size()==FULL)
            {
                printf("消费者已经结束,存储空间已满\n");
                ReleaseMutex(h_Mutex);
                break;
            }
            ReleaseMutex(h_Mutex);
            //
            WaitForSingleObject(s_Empty,INFINITE);
            WaitForSingleObject(h_Mutex,INFINITE);
            printf("生产者 %d[%d] 在队尾插入了第 %d 个元素 %d \n",id,primeNum,++produceNum,i);
            prime.push_back(i);
            printf("此时队列中的数字为:");
            for(deque<int>::iterator it=prime.begin();it!=prime.end();it++){
                printf("%d ",*it);
            }
            printf("\n\n\n");
            ReleaseMutex(h_Mutex);
            ReleaseSemaphore(s_Full,1,NULL);

        }
    }
    printf("生产者 %d 结束.\n\n\n",id);
    CloseHandle(h_Mutex);
    CloseHandle(s_Full);
    CloseHandle(s_Empty);
    nProduce--;
}

posted on 2011-01-05 02:27 abilitytao 阅读(821) 评论(0)  编辑 收藏 引用


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