BSArch/02/bakery_main.c

#include <stdio.h>
#include <windows.h>

#include "bakery.h"

static MY_LPCRITICAL_SECTION lpsec;
static int value;

DWORD WINAPI thread_func(LPVOID arg) {
        int myId = (int) arg;
        int iter = 0;
        
        do {

                My_EnterCriticalSection( myId, lpsec );

                /*----*/
                value = myId;
                Sleep(10);
                if (value != myId) {
                        printf("Thread %d: invalid state! (iter: %d)\n",myId,iter);
                } else {
                        printf("Thread %d: ok! (iter: %d)\n",myId,iter);
                }
                /*----*/

                My_LeaveCriticalSection( myId, lpsec );

                iter++;
        } while (iter < 30);
        return 0;
}


main () {
        HANDLE th1, th2, th3;
        My_InitializeCriticalSection( &lpsec );

        th1 = CreateThread( NULL, 0, thread_func, (void*) 1, 0, NULL );
        th2 = CreateThread( NULL, 0, thread_func, (void*) 2, 0, NULL );
        th3 = CreateThread( NULL, 0, thread_func, (void*) 3, 0, NULL );

        WaitForSingleObject( th1, INFINITE );
        WaitForSingleObject( th2, INFINITE );   
        WaitForSingleObject( th3, INFINITE );   

        My_DeleteCriticalSection( lpsec );
}

1	#include <stdio.h>
2	#include <windows.h>
3
4	#include "bakery.h"
5
6	static MY_LPCRITICAL_SECTION lpsec;
7	static int value;
8
9	DWORD WINAPI thread_func(LPVOID arg) {
10	int myId = (int) arg;
11	int iter = 0;
12
13	do {
14
15	My_EnterCriticalSection( myId, lpsec );
16
17	/----/
18	value = myId;
19	Sleep(10);
20	if (value != myId) {
21	printf("Thread %d: invalid state! (iter: %d)\n",myId,iter);
22	} else {
23	printf("Thread %d: ok! (iter: %d)\n",myId,iter);
24	}
25	/----/
26
27	My_LeaveCriticalSection( myId, lpsec );
28
29	iter++;
30	} while (iter < 30);
31	return 0;
32	}
33
34
35	main () {
36	HANDLE th1, th2, th3;
37	My_InitializeCriticalSection( &lpsec );
38
39	th1 = CreateThread( NULL, 0, thread_func, (void*) 1, 0, NULL );
40	th2 = CreateThread( NULL, 0, thread_func, (void*) 2, 0, NULL );
41	th3 = CreateThread( NULL, 0, thread_func, (void*) 3, 0, NULL );
42
43	WaitForSingleObject( th1, INFINITE );
44	WaitForSingleObject( th2, INFINITE );
45	WaitForSingleObject( th3, INFINITE );
46
47	My_DeleteCriticalSection( lpsec );
48	}
49
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