windows 并发的多线程的应用

（1）苹果香蕉问题

#include

using namespace std;

#include

#include

int k;

HANDLE Apple_;HANDLE Banana_;

CRITICAL_SECTION mmutex;

DWORD WINAPI Son(LPVOID n)

{//HANDLE Apple_; CRITICAL_SECTION mmutex;

int i=1;

OpenSemaphore(MUTEX_ALL_ACCESS,false,"Apple_");

while(1)

{

::WaitForSingleObject(Apple_,INFINITE);//等苹果

cout<<"Son eats"<

LeaveCriticalSection(&mmutex);

i++;

}

::CloseHandle(Apple_);

return 0;

}

DWORD WINAPI Daughter(LPVOID n)

{

int i=1;//HANDLE Banana_;CRITICAL_SECTION mmutex;

OpenSemaphore(MUTEX_ALL_ACCESS,false,"Banana_");

while(1)

{

::WaitForSingleObject(Banana_,INFINITE);//等香蕉

cout<<"Daughter eats"<

LeaveCriticalSection(&mmutex);

i++;

}

::CloseHandle(Banana_);

return 0;

}

DWORD WINAPI Father(LPVOID n)

{

UINT fruit;//CRITICAL_SECTION mmutex;

EnterCriticalSection(&mmutex);

fruit = rand()%2;

if (fruit == 0)

{

//盘中放入苹果

cout<

k=k+1;

::ReleaseSemaphore(Apple_,1,NULL);

}

else

{//盘中放入香蕉

cout<

k=k+1;

::ReleaseSemaphore(Banana_,1,NULL);

}

return 0;

}

int main()

{

int j;

k=0;

HANDLE Father_[20];

Apple_ = ::CreateSemaphore(NULL,0,1,"apple");

Banana_ =::CreateSemaphore(NULL,0,1,"banana");

InitializeCriticalSection(&mmutex);

srand(time(NULL));

for (j= 0 ; j < 20; j++)

{

Father_[j]=::CreateThread(NULL,0,Father,NULL,0,0);

}

::CreateThread(NULL,0,Son,NULL,0,0);

::CreateThread(NULL,0,Daughter,NULL,0,0);

Sleep(1000);

WaitForMultipleObjects(20,Father_,TRUE,INFINITE);

return 0;

}

（2）苹果桔子问题

#include

using namespace std;

#include

#include

int k;

HANDLE Apple_;HANDLE Orange_;

CRITICAL_SECTION mmutex;

DWORD WINAPI Son(LPVOID n)

{//HANDLE Apple_; CRITICAL_SECTION mmutex;

int i=1;

OpenSemaphore(MUTEX_ALL_ACCESS,false,"Orange_");

while(1)

{

::WaitForSingleObject(Orange_,INFINITE);//等桔子

cout<<"Son eats"<

LeaveCriticalSection(&mmutex);

i++;

}

::CloseHandle(Orange_);

return 0;

}

DWORD WINAPI Daughter(LPVOID n)

{

int i=1;//HANDLE Banana_;CRITICAL_SECTION mmutex;

OpenSemaphore(MUTEX_ALL_ACCESS,false,"Apple_");

while(1)

{

::WaitForSingleObject(Apple_,INFINITE);//等苹果

cout<<"Daughter eats"<

LeaveCriticalSection(&mmutex);

i++;

}

::CloseHandle(Apple_);

return 0;

}

DWORD WINAPI Father(LPVOID n)

{

UINT fruit;//CRITICAL_SECTION mmutex;

EnterCriticalSection(&mmutex);

fruit = rand()%2;

if (fruit == 0)

{

//盘中放入苹果

cout<

k=k+1;

::ReleaseSemaphore(Apple_,1,NULL);

}

else

{//妈妈在盘中放入桔子

cout<

k=k+1;

::ReleaseSemaphore(Orange_,1,NULL);

}

return 0;

}

int main()

{

int j;

k=0;

HANDLE Father_[20];

Apple_ = ::CreateSemaphore(NULL,0,1,"apple");

Orange_ =::CreateSemaphore(NULL,0,1,"orange");

InitializeCriticalSection(&mmutex);

srand(time(NULL));

for (j= 0 ; j < 20; j++)

{

Father_[j]=::CreateThread(NULL,0,Father,NULL,0,0);

}

::CreateThread(NULL,0,Son,NULL,0,0);

::CreateThread(NULL,0,Daughter,NULL,0,0);

Sleep(1000);

WaitForMultipleObjects(20,Father_,TRUE,INFINITE);

return 0;

}