关于C语言中多线程使用中的一个BUG
//实现类似劲舞团中按上下左右四个键的程序，尚未作出准确与否的判断
#include "stdafx.h"
#include "stdio.h"
#include "stdlib.h"
#include "time.h"
#include "process.h"
#include "windows.h"
#include<conio.h>
#define LEFT 0x4B
#define RIGHT 0x4D
#define UP 0x48
#define DOWN 0x50
DWORD WINAPI ThreadProc_Intinit( LPVOID lpParam )
{
int Rand = -1;
int i = 10;
fflush(stdin);
srand((unsigned int)time(NULL));
while(1)
{
while(i--)
{
while(1)
{
Rand = rand()%5;
if(0 != Rand) //随即产生的数放进数组中
break;
}
if(1 == Rand)
{
//Step[Index] = '1';
printf("%c\t",24);
}
else
if(2 == Rand)
{
//Step[Index] = '2';
printf("%c\t",25);
}
else
if(3 == Rand)
{
//Step[Index] = '3';
printf("%c\t",26);
}
else
if(4 == Rand)
{
//Step[Index] = '4';
printf("%c\t",27);
}
else
{
printf("ERROR!!!\n");
break;
}
}
printf("\n");
//printf("hello,this thread 1 ...\n"); //延时
i = 10;
Sleep(1005);
}
//AfxEndThread();
//ExitThread(GetExitCodeThread(0,0));
}
DWORD WINAPI ThreadProc_Input( LPVOID lpParam )
{
int temp;
while(1)
{
if(_kbhit())
{
temp=_getch();
temp=_getch();
switch(temp)
{
case LEFT:
printf("%c\t",27);break;
case RIGHT:
printf("%c\t",26);break;
case UP:
printf("%c\t",24);break;
case DOWN:
printf("%c\t",25);break;
default:
printf("ERROR!!!\n");
temp = _getch();
}
}
}
}
DWORD WINAPI ThreadProc_Input_End( LPVOID lpParam )
{
//创建线程1
CreateThread(
NULL, // default security attributes
0, // use default stack size
ThreadProc_Input, // thread function
NULL, // argument to thread function
0, // use default creation flags
NULL); // returns the thread identifier
while(1)
{
Sleep(1000);
ExitThread(GetExitCodeThread(0,0));
}
}
///////////////////////////////////////////////////////////////////////////////////////
int main()
{
//创建线程1
CreateThread(
NULL, // default security attributes
0, // use default stack size
ThreadProc_Intinit, // thread function
NULL, // argument to thread function
0, // use default creation flags
NULL); // returns the thread identifier
//创建线程2
CreateThread(
NULL, // default security attributes
0, // use default stack size
ThreadProc_Input_End, // thread function
NULL, // argument to thread function
0, // use default creation flags
NULL); // returns the thread identifier
while(1)
{
Sleep(1000);
printf("\n新的开始：\n");
}
}
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef WIN32
#include <windows.h>
#include <io.h>
#else
#include <unistd.h>
#include <sys/time.h>
#include <pthread.h>
#define CRITICAL_SECTION pthread_mutex_t
#define _vsnprintf vsnprintf
#endif
//Log{
#define MAXLOGSIZE 20000000
#define MAXLINSIZE 16000
#include <time.h>
#include <sys/timeb.h>
#include <stdarg.h>
char logfilename1[]="MyLog1.log";
char logfilename2[]="MyLog2.log";
static char logstr[MAXLINSIZE+1];
char datestr[16];
char timestr[16];
char mss[4];
CRITICAL_SECTION cs_log;
FILE *flog;
#ifdef WIN32
void Lock(CRITICAL_SECTION *l) {
EnterCriticalSection(l);
}
void Unlock(CRITICAL_SECTION *l) {
LeaveCriticalSection(l);
}
#else
void Lock(CRITICAL_SECTION *l) {
pthread_mutex_lock(l);
}
void Unlock(CRITICAL_SECTION *l) {
pthread_mutex_unlock(l);
}
#endif
void LogV(const char *pszFmt,va_list argp) {
struct tm *now;
struct timeb tb;
if (NULL==pszFmt
[解决办法]
0==pszFmt[0]) return;
_vsnprintf(logstr,MAXLINSIZE,pszFmt,argp);
ftime(&tb);
now=localtime(&tb.time);
sprintf(datestr,"%04d-%02d-%02d",now->tm_year+1900,now->tm_mon+1,now->tm_mday);
sprintf(timestr,"%02d:%02d:%02d",now->tm_hour ,now->tm_min ,now->tm_sec );
sprintf(mss,"%03d",tb.millitm);
printf("%s %s.%s %s",datestr,timestr,mss,logstr);
flog=fopen(logfilename1,"a");
if (NULL!=flog) {
fprintf(flog,"%s %s.%s %s",datestr,timestr,mss,logstr);
if (ftell(flog)>MAXLOGSIZE) {
fclose(flog);
if (rename(logfilename1,logfilename2)) {
remove(logfilename2);
rename(logfilename1,logfilename2);
}
} else {
fclose(flog);
}
}
}
void Log(const char *pszFmt,...) {
va_list argp;
Lock(&cs_log);
va_start(argp,pszFmt);
LogV(pszFmt,argp);
va_end(argp);
Unlock(&cs_log);
}
//Log}
int main(int argc,char * argv[]) {
int i;
#ifdef WIN32
InitializeCriticalSection(&cs_log);
#else
pthread_mutex_init(&cs_log,NULL);
#endif
for (i=0;i<10000;i++) {
Log("This is a Log %04d from FILE:%s LINE:%d\n",i, __FILE__, __LINE__);
}
#ifdef WIN32
DeleteCriticalSection(&cs_log);
#else
pthread_mutex_destroy(&cs_log);
#endif
return 0;
}
