Windows Semaphores In Windows semaphores are declared using

Windows Semaphores In Windows, semaphores are declared using the API function Create. Semaphore(). HANDLE Create. Semaphore (Security. Attributes, Initial. Count, Max. Count, Semaphore. ID); ELC 467– 5 Spring 2020 Lecture 6 Page 78

Windows Semaphores In Windows, semaphores are declared using the API function Create. Semaphore(). HANDLE Create. Semaphore (Security. Attributes, Initial. Count, Max. Count, Semaphore. ID); down and up operations are performed using the API functions. Wait. For. Single. Object( ) and Release. Semaphore ( ). ELC 467– 5 Spring 2020 Lecture 6 Page 78

Windows Semaphores In Windows, semaphores are declared using the API function Create. Semaphore(). HANDLE Create. Semaphore (Security. Attributes, Initial. Count, Max. Count, Semaphore. ID); down and up operations are performed using the API functions. Wait. For. Single. Object( ) and Release. Semaphore ( ). Windows provides other synchronization objects such as mutexes and critical sections. ELC 467– 5 Spring 2020 Lecture 6 Page 78

Example 3 DWORD WINAPI Fn 1(LPVOID param) { int i; while(1){ gotoxy(10, 10); i=i+1; printf("Thread 1 %d", i); } } DWORD WINAPI Fn 2(LPVOID param) { int i; while(1){ gotoxy(10, 20); i=i+1; printf("Thread 2 %d", i); } } ELC 467– 5 Spring 2020 Lecture 6 Page 88

Example 3

Example 3 DWORD WINAPI Fn 1(LPVOID param) { int i; while(1){ gotoxy(10, 10); i=i+1; printf("Thread 1 %d", i); } } DWORD WINAPI Fn 2(LPVOID param) { int i; while(1){ gotoxy(10, 20); i=i+1; printf("Thread 2 %d", i); } } ELC 467– 5 Spring 2020 Lecture 6 Page 88

Windows Semaphores main( ) { DWORD Thread. ID 1, Thread. ID 2; char Sem; char c; hsem = Create. Semaphore(NULL, 1, 1, &Sem); HANDLE ht 1 = Create. Thread(NULL, 0, Fn 1, NULL, 0, &Thread. ID 1); HANDLE ht 2 = Create. Thread(NULL, 0, Fn 2, NULL, 0, &Thread. ID 2); while(c != 'e') {c = getche(); } } ELC 467– 5 Spring 2020 Lecture 6 Page 98

Example 4