多线程测试

因为我不想写gui所以用的控制台写的，不过可能写的有问题，因为后面的线程顺序不会改变，永远是线程1->2->3->4，也可能是我的cpu执行太快了，因为之前上课测试的两条线程不用临界体10000次全局变量数据会有误差，而我试了一下我的开了20条线程跑不用临界体也不会有误差

#define BUFFER_THREAD_NUMBERS 2
#define EAT_THREAD_NUMBERS 4
HANDLE g_hSemaphore1;
HANDLE g_hSemaphore2;
CRITICAL_SECTION g_cs1;
char temp = 0;
char strBuffer[0xff] = { 0 };
//我傻了调试了2个小时的bug，我以为什么情况呢，结果是最后打印的时候number填错了。。。

//缓冲区分割字符串最后一位，然后释放一次信号，等待信号返回，数据被单条线程获得后再离开临界体
//不知道为什么，是我的cpu太快了吗？，永远排序都是按照顺序排序，根本就没有感觉是按照20ms分配线程，
DWORD _stdcall BufferThreadProc(PVOID parameter) {
	while (true) {
		EnterCriticalSection(&g_cs1);
		if (!strBuffer[0]) {
			LeaveCriticalSection(&g_cs1);
			break;
		}
		temp = strBuffer[strlen(strBuffer) - 1];
		strBuffer[strlen(strBuffer) - 1] = 0;
		printf("Buffer%d:%c\n", (DWORD)parameter, temp);
		ReleaseSemaphore(g_hSemaphore1, 1, 0);
		WaitForSingleObject(g_hSemaphore2, INFINITE);
		LeaveCriticalSection(&g_cs1);
		Sleep(500);
	}
	return 0;
}
//吃函数:主要做字符串处理，做完后再返回缓冲区的信号值
DWORD _stdcall EatThreadProc(PVOID parameter) {
	char* buffer = (char*)parameter;
	char buffer2[2] = { 0 };
	while (true) {
		WaitForSingleObject(g_hSemaphore1, INFINITE);
		sprintf(buffer2, "-%c", temp);
		strcat(buffer, buffer2);
		ReleaseSemaphore(g_hSemaphore2, 1, 0);
	}
	return 0;
}
int main() {
	char eatBuffer[EAT_THREAD_NUMBERS][0x40] = { 0 };
	HANDLE threadBuffer[BUFFER_THREAD_NUMBERS];
	InitializeCriticalSection(&g_cs1);
	g_hSemaphore1 = CreateSemaphore(0, 0, 4, 0);
	g_hSemaphore2 = CreateSemaphore(0, 0, 2, 0);
	HANDLE threadEat[EAT_THREAD_NUMBERS];
	for (size_t i = 0; i < EAT_THREAD_NUMBERS; i++) {
		threadEat[i] = CreateThread(0, 0, EatThreadProc, (PVOID)eatBuffer[i], 0, 0);
		if (!threadEat[i]) {
			printf("Create thread failed\n");
			return 0;
		}
	}
	while (TRUE) {
		printf("input:");
		scanf("%s", strBuffer);
		if (!strcmp(strBuffer,"stop")) {
			break;
		}
		printf("\n");
		//每次输入新的字符串的时候就重新创建线程一次，然后执行完后销毁
		for (size_t i = 0; i < BUFFER_THREAD_NUMBERS; i++) {
			threadBuffer[i] = CreateThread(0, 0, BufferThreadProc, (PVOID)i, 0, 0);
			if (!threadBuffer[i]) {
				printf("Create thread failed\n");
				return 0;
			}
		}
		WaitForMultipleObjects(BUFFER_THREAD_NUMBERS, threadBuffer, TRUE, INFINITE);
		for (size_t i = 0; i < EAT_THREAD_NUMBERS; i++) {
			printf("eat[%d]:%s\n", i, eatBuffer[i]);
		}
		for (size_t i = 0; i < BUFFER_THREAD_NUMBERS; i++) {
			CloseHandle(threadBuffer[i]);
		}
	}
	DeleteCriticalSection(&g_cs1);
	for (size_t i = 0; i < EAT_THREAD_NUMBERS; i++) {
		CloseHandle(threadEat[i]);
	}
	return 0;
}