linux下 ，直接打开，然后在关闭文件 fclose也出错
linux 下，c程序，就是简单的写日志，打开文件，写日志，关闭文件，但是每次关闭文件fclose都报错，错误信息如下：
*** glibc detected *** ./test: free(): invalid next size (normal): 0x0000000007be5620 ***
======= Backtrace: =========
/lib64/libc.so.6[0x3888a71634]
/lib64/libc.so.6(cfree+0x8c)[0x3888a74c5c]
/lib64/libc.so.6(fclose+0x14b)[0x3888a6089b]
./test[0x40347e]
./test[0x408770]
./test[0x405e89]
/lib64/libc.so.6(__libc_start_main+0xf4)[0x3888a1d8b4]
./test(__gxx_personality_v0+0xa9)[0x4017a9]
======= Memory map: ========
00400000-00411000 r-xp 00000000 fd:1e 6307883 /src/test
00610000-00611000 rw-p 00010000 fd:1e 6307883 /src/test
00611000-00612000 rw-p 00611000 00:00 0
07be4000-07c05000 rw-p 07be4000 00:00 0
3887a00000-3887a1a000 r-xp 00000000 fd:00 229676 /lib64/ld-2.5.so
3887c1a000-3887c1b000 r--p 0001a000 fd:00 229676 /lib64/ld-2.5.so
3887c1b000-3887c1c000 rw-p 0001b000 fd:00 229676 /lib64/ld-2.5.so
3888a00000-3888b4a000 r-xp 00000000 fd:00 229677 /lib64/libc-2.5.so
3888b4a000-3888d49000 ---p 0014a000 fd:00 229677 /lib64/libc-2.5.so
3888d49000-3888d4d000 r--p 00149000 fd:00 229677 /lib64/libc-2.5.so
3888d4d000-3888d4e000 rw-p 0014d000 fd:00 229677 /lib64/libc-2.5.so
3888d4e000-3888d53000 rw-p 3888d4e000 00:00 0
3888e00000-3888e82000 r-xp 00000000 fd:00 229681 /lib64/libm-2.5.so
3888e82000-3889081000 ---p 00082000 fd:00 229681 /lib64/libm-2.5.so
3889081000-3889082000 r--p 00081000 fd:00 229681 /lib64/libm-2.5.so
3889082000-3889083000 rw-p 00082000 fd:00 229681 /lib64/libm-2.5.so
3889600000-3889615000 r-xp 00000000 fd:00 229680 /lib64/libpthread-2.5.so
3889615000-3889814000 ---p 00015000 fd:00 229680 /lib64/libpthread-2.5.so
3889814000-3889815000 r--p 00014000 fd:00 229680 /lib64/libpthread-2.5.so
3889815000-3889816000 rw-p 00015000 fd:00 229680 /lib64/libpthread-2.5.so
3889816000-388981a000 rw-p 3889816000 00:00 0
388aa00000-388aa0d000 r-xp 00000000 fd:00 229683 /lib64/libgcc_s-4.1.2-20080102.so.1
388aa0d000-388ac0d000 ---p 0000d000 fd:00 229683 /lib64/libgcc_s-4.1.2-20080102.so.1
388ac0d000-388ac0e000 rw-p 0000d000 fd:00 229683 /lib64/libgcc_s-4.1.2-20080102.so.1
388ae00000-388aee6000 r-xp 00000000 fd:09 950539 /usr/lib64/libstdc++.so.6.0.8
388aee6000-388b0e5000 ---p 000e6000 fd:09 950539 /usr/lib64/libstdc++.so.6.0.8
388b0e5000-388b0eb000 r--p 000e5000 fd:09 950539 /usr/lib64/libstdc++.so.6.0.8
388b0eb000-388b0ee000 rw-p 000eb000 fd:09 950539 /usr/lib64/libstdc++.so.6.0.8
388b0ee000-388b100000 rw-p 388b0ee000 00:00 0
388ea00000-388ea15000 r-xp 00000000 fd:00 229701 /lib64/libnsl-2.5.so
388ea15000-388ec14000 ---p 00015000 fd:00 229701 /lib64/libnsl-2.5.so
388ec14000-388ec15000 r--p 00014000 fd:00 229701 /lib64/libnsl-2.5.so
388ec15000-388ec16000 rw-p 00015000 fd:00 229701 /lib64/libnsl-2.5.so
388ec16000-388ec18000 rw-p 388ec16000 00:00 0
2b145867a000-2b145867d000 rw-p 2b145867a000 00:00 0
2b14586a2000-2b14586a3000 rw-p 2b14586a2000 00:00 0
2b14589a5000-2b14589a9000 rw-p 2b14589a5000 00:00 0
2b145c000000-2b145c021000 rw-p 2b145c000000 00:00 0
2b145c021000-2b1460000000 ---p 2b145c021000 00:00 0
7fff5241a000-7fff52430000 rw-p 7fff5241a000 00:00 0 [stack]
ffffffffff600000-ffffffffffe00000 ---p 00000000 00:00 0 [vdso]
Aborted
程序如下：
void errLog(int level ,const char *fmt, ...)
{
FILE *fp;
va_list args;
char lsTmpBuf[FILE_NAME_LEN+1];
char lsStrBuf[STR_BUF_LEN+1];
initStr(lsTmpBuf);
initStr(lsStrBuf);
snprintf(lsTmpBuf, FILE_NAME_LEN, "%s/ERROR@%ld.log", ErrLogPath, getCurDate());
fp = fopen(lsTmpBuf, "a+");
if(fp == NULL)
{
printf("ERROR: open perror log file faild[%s][%s],check you path!\n", strerror(errno), lsTmpBuf);
exit(1);
}
va_start(args, fmt);
vsprintf(lsStrBuf, fmt, args);
va_end(args);
if(level==1)
{
fprintf(fp, "%s[%s]%s", getSystemTime(0), "WARN",lsStrBuf);
}
else
{
fprintf(fp, "%s[%s]%s", getSystemTime(0), "ERROR",lsStrBuf);
}
if(fp!=NULL)
fclose(fp);
}
后来干脆把中间写的注释掉，直接打开，然后就关闭，还是fclose就错误
fp = fopen(lsTmpBuf, "a+");
if(fp == NULL)
{
printf("ERROR: open perror log file faild[%s][%s],check you path!\n", strerror(errno), lsTmpBuf);
exit(1);
}
if(fp!=NULL)
fclose(fp);
这样也错，不知道为什么
[解决办法]
改用这个
- C/C++ code
#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 100000000#define ARRSIZE(x) (sizeof(x)/sizeof(x[0]))#include <time.h>#include <stdarg.h>char logfilename1[]="MyLog1.log";char logfilename2[]="MyLog2.log";char logstr[16000];char datestr[16];char timestr[16];char ms10[3];CRITICAL_SECTION cs_log;FILE *flog;int centisec() {#ifdef WIN32 return ((GetTickCount()%1000L)/10)%100;#else struct timeval tv; if (!gettimeofday(&tv,NULL)) { return ((tv.tv_usec%1000000L)/10000)%100; } else { return 0; }#endif}#ifdef WIN32void Lock(CRITICAL_SECTION *l) { EnterCriticalSection(l);}void Unlock(CRITICAL_SECTION *l) { LeaveCriticalSection(l);}#elsevoid Lock(CRITICAL_SECTION *l) { pthread_mutex_lock(l);}void Unlock(CRITICAL_SECTION *l) { pthread_mutex_unlock(l);}#endifvoid LogV(const char *pszFmt,va_list argp) { struct tm *now; time_t aclock; if (NULL==pszFmt||0==pszFmt[0]) return; if (-1==_vsnprintf(logstr,ARRSIZE(logstr),pszFmt,argp)) logstr[ARRSIZE(logstr)-1]=0; time(&aclock); now=localtime(&aclock); 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(ms10,"%02d",centisec()); printf("%s %s.%s %s",datestr,timestr,ms10,logstr); flog=fopen(logfilename1,"a"); if (NULL!=flog) { fprintf(flog,"%s %s.%s %s",datestr,timestr,ms10,logstr); if (ftell(flog)>MAXLOGSIZE) { fclose(flog); if (rename(logfilename1,logfilename2)) { remove(logfilename2); rename(logfilename1,logfilename2); } flog=fopen(logfilename1,"a"); if (NULL==flog) return; } 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;}
[解决办法]
如果你确定已经打开了文件并未做任何操作就 fclose, 用
int ferror(FILE *stream)
ferror returns non-zero if the error indicator for stream is set.
void perror(const char *s)
perror(s) prints s and an implementation-defined error message corresponding to the integer in errno,
检查看看
[解决办法]
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