问题描述
- fatal error C1004: unexpected end of file found
- //读者与写者问题
#include
#include
#include
#ifdef _MT
//设置控制台输出颜色
BOOL SetConsoleColor(WORD wAttributes)
{
HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
if (hConsole == INVALID_HANDLE_VALUE)
return FALSE;
return SetConsoleTextAttribute(hConsole wAttributes);}
const int READER_NUM = 5; //读者个数
//关键段和事件
CRITICAL_SECTION g_cs g_cs_writer_count;
HANDLE g_hEventWriter g_hEventNoReader;
int g_nReaderCount;
//读者线程输出函数(变参函数的实现)
void ReaderPrintf(char *pszFormat ...)
{
va_list pArgList;
va_start(pArgList pszFormat); EnterCriticalSection(&g_cs); vfprintf(stdout pszFormat pArgList); LeaveCriticalSection(&g_cs); va_end(pArgList);}
//读者线程函数
unsigned int __stdcall ReaderThreadFun(PVOID pM)
{
ReaderPrintf("" 编号为%d的读者进入等待中...n"" GetCurrentThreadId());
//等待写者完成
WaitForSingleObject(g_hEventWriter INFINITE);
//读者个数增加 EnterCriticalSection(&g_cs_writer_count); g_nReaderCount++; if (g_nReaderCount == 1) ResetEvent(g_hEventNoReader); LeaveCriticalSection(&g_cs_writer_count); //读取文件 ReaderPrintf(""编号为%d的读者开始读取文件...n"" GetCurrentThreadId()); Sleep(rand() % 100); //结束阅读读者个数减小空位增加 ReaderPrintf("" 编号为%d的读者结束读取文件n"" GetCurrentThreadId()); //读者个数减少 EnterCriticalSection(&g_cs_writer_count); g_nReaderCount--; if (g_nReaderCount == 0) SetEvent(g_hEventNoReader); LeaveCriticalSection(&g_cs_writer_count); return 0;}
//写者线程输出函数
void WriterPrintf(char *pszStr)
{
EnterCriticalSection(&g_cs);
SetConsoleColor(FOREGROUND_GREEN);
printf("" %sn"" pszStr);
SetConsoleColor(FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
LeaveCriticalSection(&g_cs);
}
//写者线程函数
unsigned int __stdcall WriterThreadFun(PVOID pM)
{
WriterPrintf(""写者线程进入等待中..."");
//等待读文件的读者为零
WaitForSingleObject(g_hEventNoReader INFINITE);
//标记写者正在写文件
ResetEvent(g_hEventWriter);
//写文件 WriterPrintf("" 写者开始写文件.....""); Sleep(rand() % 100); WriterPrintf("" 写者结束写文件""); //标记写者结束写文件 SetEvent(g_hEventWriter); return 0;}
int main()
{
printf("" 读者写者问题n"");//初始化事件和信号量
InitializeCriticalSection(&g_cs);
InitializeCriticalSection(&g_cs_writer_count);
//手动置位初始已触发
g_hEventWriter = CreateEvent(NULL TRUE TRUE NULL);
g_hEventNoReader = CreateEvent(NULL FALSE TRUE NULL);
g_nReaderCount = 0;
int i;
HANDLE hThread[READER_NUM + 1];
//先启动二个读者线程
for (i = 1; i <= 2; i++)
hThread[i] = (HANDLE)_beginthreadex(NULL 0 ReaderThreadFun NULL 0 NULL);
//启动写者线程
hThread[0] = (HANDLE)_beginthreadex(NULL 0 WriterThreadFun NULL 0 NULL);
Sleep(50);
//最后启动其它读者结程
for ( ; i <= READER_NUM; i++)
hThread[i] = (HANDLE)_beginthreadex(NULL 0 ReaderThreadFun NULL 0 NULL);
WaitForMultipleObjects(READER_NUM + 1 hThread TRUE INFINITE);
for (i = 0; i < READER_NUM + 1; i++)
CloseHandle(hThread[i]);
//销毁事件和信号量
CloseHandle(g_hEventWriter);
CloseHandle(g_hEventNoReader);
DeleteCriticalSection(&g_cs);
DeleteCriticalSection(&g_cs_writer_count);
return 0;
}
解决方案
文件括号等配对了没，分号都有了