分析并总结以下代码的运行结果#include <windows.h>
#include <iostream>
const unsigned short SIZE_OF_BUFFER = 10; //缓冲区长度
unsigned short ProductID = 0;    //产品号
unsigned short ConsumeID = 0;    //将被消耗的产品号
unsigned short in = 0;      //产品进缓冲区时的缓冲区下标
unsigned short out = 0;      //产品出缓冲区时的缓冲区下标
int g_buffer[SIZE_OF_BUFFER];    //缓冲区是个循环队列
bool g_continue = true;      //控制程序结束
HANDLE g_hMutex;       //用于线程间的互斥
HANDLE g_hFullSemaphore;     //当缓冲区满时迫使生产者等待
HANDLE g_hEmptySemaphore;     //当缓冲区空时迫使消费者等待
DWORD WINAPI Producer(LPVOID);    //生产者线程
DWORD WINAPI Consumer(LPVOID);    //消费者线程
int main()
{
	//创建各个互斥信号
	g_hMutex = CreateMutex(NULL, FALSE, NULL);
	g_hFullSemaphore = CreateSemaphore(NULL, SIZE_OF_BUFFER - 1, SIZE_OF_BUFFER - 1, NULL);
	g_hEmptySemaphore = CreateSemaphore(NULL, 0, SIZE_OF_BUFFER - 1, NULL);
	//调整下面的数值，可以发现，当生产者个数多于消费者个数时，
	//生产速度快，生产者经常等待消费者；反之，消费者经常等待 
	const unsigned short PRODUCERS_COUNT = 3;  //生产者的个数
	const unsigned short CONSUMERS_COUNT = 1;  //消费者的个数
	//总的线程数
	const unsigned short THREADS_COUNT = PRODUCERS_COUNT + CONSUMERS_COUNT;
	HANDLE hThreads[THREADS_COUNT]; //各线程的handle
	DWORD producerID[PRODUCERS_COUNT]; //生产者线程的标识符
	DWORD consumerID[CONSUMERS_COUNT]; //消费者线程的标识符
	//创建生产者线程
	for (int i = 0; i<PRODUCERS_COUNT; ++i){
		hThreads[i] = CreateThread(NULL, 0, Producer, NULL, 0, &producerID[i]);
		if (hThreads[i] == NULL) return -1;
	}
	//创建消费者线程
	for (int i = 0; i<CONSUMERS_COUNT; ++i){
		hThreads[PRODUCERS_COUNT + i] = CreateThread(NULL, 0, Consumer, NULL, 0, &consumerID[i]);
		if (hThreads[i] == NULL) return -1;
	}
	while (g_continue){
		if (getchar()){ //按回车后终止程序运行
			g_continue = false;
		}
	}
	return 0;
}
//生产一个产品。简单模拟了一下，仅输出新产品的ID号
void Produce()
{
	std::cerr << "Producing " << ++ProductID << " ... ";
	std::cerr << "Succeed" << std::endl;
}
//把新生产的产品放入缓冲区
void Append()
{
	std::cerr << "Appending a product ... ";
	g_buffer[in] = ProductID;
	in = (in + 1) % SIZE_OF_BUFFER;
	std::cerr << "Succeed" << std::endl;
	//输出缓冲区当前的状态
	for (int i = 0; i<SIZE_OF_BUFFER; ++i){
		std::cout << i << ": " << g_buffer[i];
		if (i == in) std::cout << " <-- 生产";
		if (i == out) std::cout << " <-- 消费";
		std::cout << std::endl;
	}
}
//从缓冲区中取出一个产品
void Take()
{
	std::cerr << "Taking a product ... ";
	ConsumeID = g_buffer[out];
	out = (out + 1) % SIZE_OF_BUFFER;
	std::cerr << "Succeed" << std::endl;
	//输出缓冲区当前的状态
	for (int i = 0; i<SIZE_OF_BUFFER; ++i){
		std::cout << i << ": " << g_buffer[i];
		if (i == in) std::cout << " <-- 生产";
		if (i == out) std::cout << " <-- 消费";
		std::cout << std::endl;
	}
}
//消耗一个产品
void Consume()
{
	std::cerr << "Consuming " << ConsumeID << " ... ";
	std::cerr << "Succeed" << std::endl;
}
//生产者
DWORD  WINAPI Producer(LPVOID lpPara)
{
	while (g_continue){
		WaitForSingleObject(g_hFullSemaphore, INFINITE);
		WaitForSingleObject(g_hMutex, INFINITE);
		Produce();
		Append();
		Sleep(1500);
		ReleaseMutex(g_hMutex);
		ReleaseSemaphore(g_hEmptySemaphore, 1, NULL);
	}
	return 0;
}
//消费者
DWORD  WINAPI Consumer(LPVOID lpPara)
{
	while (g_continue){
		WaitForSingleObject(g_hEmptySemaphore, INFINITE);
		WaitForSingleObject(g_hMutex, INFINITE);
		Take();
		Consume();
		Sleep(1500);
		ReleaseMutex(g_hMutex);
		ReleaseSemaphore(g_hFullSemaphore, 1, NULL);
	}
	return 0;
}