Windows 多线程 Mutex

不使用互斥 2个线程输出数组arr

#include <string> #include <iostream> #include <Windows.h> using namespace std; HANDLE hMutex = NULL; int arr[5] = {1, 2, 3, 4, 5}; DWORD CALLBACK Thread1(LPVOID Param) { while(true) { //WaitForSingleObject(hMutex, INFINITE); cout << "Thread1:/t"; for (int i = 0; i < 5; i++) { cout << arr[i] << ' '; Sleep(50); } cout << endl; //ReleaseMutex(hMutex); } } DWORD CALLBACK Thread2(LPVOID Param) { while(true) { //WaitForSingleObject(hMutex, INFINITE); cout << "Thread2:/t"; for (int i = 0; i < 5; i++) { cout << arr[i] << ' '; Sleep(50); } cout << endl; //ReleaseMutex(hMutex); } } int main() { //hMutex = CreateMutex(NULL, NULL, NULL); CreateThread(NULL, 0 ,Thread1, NULL, NULL, NULL); CreateThread(NULL, 0 ,Thread2, NULL, NULL, NULL); while(true) { Sleep(100); } return 0; }

结果:

使用互斥的输出:

HANDLE WINAPI CreateMutex(
  __in          LPSECURITY_ATTRIBUTES lpMutexAttributes,
  __in          BOOL bInitialOwner,
  __in          LPCTSTR lpName
);

DWORD WINAPI WaitForSingleObject(
  __in          HANDLE hHandle,
  __in          DWORD dwMilliseconds
);

The WaitForSingleObject function can wait for the following objects:

• Change notification
• Console input
• Event
• Memory resource notification
• Mutex
• Process
• Semaphore
• Thread
• Waitable timer

主线程利用WaitForSingleObject等待另一个线程结束:

#include <string> #include <iostream> #include <Windows.h> using namespace std; int arr[5] = {1, 2, 3, 4, 5}; DWORD CALLBACK Thread1(LPVOID Param) { for(int c = 0; c < 10; c++) { cout << "Thread1:/t"; for (int i = 0; i < 5; i++) { cout << arr[i] << ' '; Sleep(50); } cout << endl; } return 0; } HANDLE hThread1 = NULL; int main() { hThread1 = CreateThread(NULL, 0 ,Thread1, NULL, NULL, NULL); WaitForSingleObject(hThread1, INFINITE); return 0; }