I use this log module, write the log file and the console at the same time. No problem to a log file, write the console, write a few lines, behind won't print, log files are still in the writing.

I use a tail -f log. The log complains:
TAIL: the write () failed

 

Void MyLog: : init (const STD: : string& Filename) 
{
_filename=filename; 
Boost: : filesystem: : path filepath=boost: : filesystem: : complete (_filename); 
Boost: : filesystem: : path dir=filepath. Parent_path (); 
If (boost: : filesystem: : the exists (dir)==false) 
{
Boost: : filesystem: : create_directories (dir); 
} 
Auto consoleSink=boost: : log: : add_console_log 
(STD: : clog, 
Keywords: : filter=expr: : attrKeywords: : format=
(
Expr... stream 
<"[" & lt; & lt; boost: : log: : trivial: : severity 
<"] "& lt; ) 
); 

Auto pSink=boost: : log: : add_file_log 
(
Keywords: : open_mode=STD: : ios: : app,//use the append mode 
Keywords: : file_name=filename, 
Keywords: : rotation_size=_fileSize * 1024 * 1024, 
Keywords: : filter=expr: : attrKeywords: : max_files=_fileCount, 
Keywords: : time_based_rotation=sinks: : file: : rotation_at_time_point (0, 0, 0), 
Keywords: : format=
(
Expr... stream 
<"[" & lt; & lt; boost: : log: : trivial: : severity 
<"] "& lt; ) 
); 
PSink - & gt; Locked_backend () - & gt; Auto_flush (true);//that the log updated 
ConsoleSink - & gt; Locked_backend () - & gt; Auto_flush (true);//that the log updated 
PSink - & gt; Imbue (STD: : locale (" zh_CN. Utf-8 "));//localization 
ConsoleSink - & gt; Imbue (STD: : locale (" zh_CN. Utf-8 "));//localization 
Boost: : log: : add_common_attributes (); 
} 

CodePudding user response:

To compile the release way to perform normal, also don't know what the devil [face] monkey2:012 PNG [/face]

CodePudding user response:

Why do I set the
Keywords: : max_files=_fileCount,

Control log file number is invalid?

CodePudding user response:

Advice for my this earthen MyLog:

 # include & lt; stdio.h> 
# include & lt; Stdlib. H> 
# include & lt; String. H> 
# ifdef WIN32 
# include & lt; Windows. H> 
# include & lt; IO. H> 
# include & lt; Process. H> 
# define MYVOID void 
# the else 
# include & lt; Unistd. H> 
# include & lt; Sys/time. H> 
# include & lt; Pthread. H> 
# define CRITICAL_SECTION pthread_mutex_t 
# define _vsnprintf vsnprintf 
# define MYVOID void * 
# endif 
//the Log {
# define MAXLOGSIZE 20000000 
# define ARRSIZE (x) (sizeof (x)/sizeof (x [0])) 
# include & lt; Time. H> 
# include & lt; Sys/timeb. H> 
# include & lt; Stdarg. H> 
Char logfilename1 []="MyLog1. Log"; 
Char logfilename2 []="MyLog2. Log"; 
Char logstr [16000]. 
Char datestr [16]. 
Char timestr [16]. 
Char MSS [4]. 
CRITICAL_SECTION cs_log; 
The FILE * flog; 
# ifdef WIN32 
The Lock (CRITICAL_SECTION void * l) {
The EnterCriticalSection (l); 
} 
Void Unlock (CRITICAL_SECTION * l) {
LeaveCriticalSection (l); 
} 
Void sleep_ms (int) ms {
Sleep (ms). 
} 
# the else 
The Lock (CRITICAL_SECTION void * l) {
Pthread_mutex_lock (l); 
} 
Void Unlock (CRITICAL_SECTION * l) {
Pthread_mutex_unlock (l); 
} 
Void sleep_ms (int) ms {
Usleep (ms * 1000); 
} 
# endif 
Void LogV (const char * pszFmt, va_list argp) {
* struct tm now; 
Struct timeb TB; 


If (NULL==pszFmt | | 0==pszFmt [0]) return; 
If (1==_vsnprintf (logstr, ARRSIZE (logstr), pszFmt, argp)) logstr [ARRSIZE (logstr) - 1)=0. 
Ftime (& amp; TB); 
Now=localtime (& amp; TB. Time); 
Sprintf (datestr, "% d % % 4 d - 02-02 d", now - & gt; Tm_year + 1900, now - & gt; Tm_mon + 1, now - & gt; Tm_mday); 
Sprintf (timestr, "02 02 02 % d: % d: % d", now - & gt; Tm_hour, now - & gt; Tm_min, now - & gt; Tm_sec); 
Sprintf (MSS, "% 3 d", 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) & gt; MAXLOGSIZE) {
The fclose (flog); 
If (rename (logfilename1 logfilename2)) {
Remove (logfilename2); 
Rename (logfilename1 logfilename2); 
} 
Flog=fopen (logfilename1, "a"); 
If (NULL==flog) return; 
} 
The fclose (flog); 
} 
} 
Void the Log (const char * pszFmt,... ) {
Va_list argp; 

The Lock (& amp; Cs_log); 
Va_start (argp, pszFmt); 
LogV (pszFmt argp); 
Va_end (argp); 
Unlock (& amp; Cs_log); 
} 
//the Log} 
Int No_Loop=0; 
MYVOID testThread (void * PCN) {
Int n, I; 

N=(int) PCN; 
i=0; 
While (1) {
Sleep_ms (1000); 
The Log (" testThread in % d: I==% ds \ n ", n + + I); 
If (i> nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull