生产者与消费者问题初步实现
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#include<windows.h>
#include<iostream>
#define BUFFER_SIZE 7
int buffer[BUFFER_SIZE] = {11,0,0,7,23,0,19};
int in = 0;
int out = 0;
int Timetowait;
DWORD WINAPI Producer(LPVOID lpParameter);
DWORD WINAPI Consumer(LPVOID lpParameter);
HANDLE hMutex;
HANDLE hEmpty;
HANDLE hFull;
int main()
{
hMutex = CreateMutex(NULL, FALSE, NULL);
hEmpty = CreateSemaphore(NULL, BUFFER_SIZE, BUFFER_SIZE, NULL);
hFull = CreateSemaphore(NULL, 0, BUFFER_SIZE, NULL);
HANDLE hProducer = CreateThread(NULL, 0, Producer, NULL, 0, NULL);
HANDLE hConsumer = CreateThread(NULL, 0, Consumer, NULL, 0, NULL);
CloseHandle(hProducer);
CloseHandle(hConsumer);
Sleep(3000);
return 0;
}
DWORD WINAPI Producer(LPVOID lpParameter)
{
while (true)
{
WaitForSingleObject(hEmpty, INFINITE);
WaitForSingleObject(hMutex, INFINITE);
if (in >= 0)
{
in = in%BUFFER_SIZE;
while (buffer[in])
in = (++in) % BUFFER_SIZE;
buffer[in] = rand()%50+1;
printf("Producer: produce number %d\n", buffer[in]);
in++;
for (int i = 0; i < BUFFER_SIZE; i++)
printf("%d ", buffer[i]);
printf("\n");
}
else
break;
ReleaseMutex(hMutex);
ReleaseSemaphore(hFull,1,NULL);
Timetowait = rand() % 20;
Sleep(Timetowait);
}
return 0;
}
DWORD WINAPI Consumer(LPVOID lpParameter)
{
while (true)
{
WaitForSingleObject(hFull, INFINITE);
WaitForSingleObject(hMutex, INFINITE);
if (out >= 0)
{
out = out%BUFFER_SIZE;
while(!buffer[out])
out = (++out)%BUFFER_SIZE;
printf("Consumer: consume number %d\n", buffer[out]);
buffer[out] = 0;
out++;
for (int i = 0; i < BUFFER_SIZE; i++)
printf("%d ", buffer[i]);
printf("\n");
}
else
break;
ReleaseMutex(hMutex);
ReleaseSemaphore(hEmpty,1,NULL);
Timetowait = rand() % 20;
Sleep(Timetowait);
}
return 0;
}
#include<iostream>
#define BUFFER_SIZE 7
int buffer[BUFFER_SIZE] = {11,0,0,7,23,0,19};
int in = 0;
int out = 0;
int Timetowait;
DWORD WINAPI Producer(LPVOID lpParameter);
DWORD WINAPI Consumer(LPVOID lpParameter);
HANDLE hMutex;
HANDLE hEmpty;
HANDLE hFull;
int main()
{
hMutex = CreateMutex(NULL, FALSE, NULL);
hEmpty = CreateSemaphore(NULL, BUFFER_SIZE, BUFFER_SIZE, NULL);
hFull = CreateSemaphore(NULL, 0, BUFFER_SIZE, NULL);
HANDLE hProducer = CreateThread(NULL, 0, Producer, NULL, 0, NULL);
HANDLE hConsumer = CreateThread(NULL, 0, Consumer, NULL, 0, NULL);
CloseHandle(hProducer);
CloseHandle(hConsumer);
Sleep(3000);
return 0;
}
DWORD WINAPI Producer(LPVOID lpParameter)
{
while (true)
{
WaitForSingleObject(hEmpty, INFINITE);
WaitForSingleObject(hMutex, INFINITE);
if (in >= 0)
{
in = in%BUFFER_SIZE;
while (buffer[in])
in = (++in) % BUFFER_SIZE;
buffer[in] = rand()%50+1;
printf("Producer: produce number %d\n", buffer[in]);
in++;
for (int i = 0; i < BUFFER_SIZE; i++)
printf("%d ", buffer[i]);
printf("\n");
}
else
break;
ReleaseMutex(hMutex);
ReleaseSemaphore(hFull,1,NULL);
Timetowait = rand() % 20;
Sleep(Timetowait);
}
return 0;
}
DWORD WINAPI Consumer(LPVOID lpParameter)
{
while (true)
{
WaitForSingleObject(hFull, INFINITE);
WaitForSingleObject(hMutex, INFINITE);
if (out >= 0)
{
out = out%BUFFER_SIZE;
while(!buffer[out])
out = (++out)%BUFFER_SIZE;
printf("Consumer: consume number %d\n", buffer[out]);
buffer[out] = 0;
out++;
for (int i = 0; i < BUFFER_SIZE; i++)
printf("%d ", buffer[i]);
printf("\n");
}
else
break;
ReleaseMutex(hMutex);
ReleaseSemaphore(hEmpty,1,NULL);
Timetowait = rand() % 20;
Sleep(Timetowait);
}
return 0;
}
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