Now I created two threads, theoretically should not follow the time slice rotation? But now I'm one of the threads need to perform a period of time, but at the same time I also need another thread real-time data, could you tell me how to solve??

CodePudding user response:

Create a mutex
Create a mutex

CodePudding user response:

Fyi:

//loop to a function every time send 200 bytes (this is the fixed) buffer, 
//a function need to incoming buffer, the circulation of 240 bytes (fixed) new buffer for processing, 
//when dealing with each new printing takes two bytes of the buffer 
# ifdef WIN32 
# pragma warning (4996) disable: 
# endif 
#include  
#include  
#include  
# ifdef WIN32 
#include  
#include  
#include  
# define MYVOID void 
# define vsnprintf _vsnprintf 
# the else 
#include  
#include  
#include  
# define CRITICAL_SECTION pthread_mutex_t 
# define MYVOID void * 
# endif 
//the Log {
# define MAXLOGSIZE 20000000 
# define MAXLINSIZE 16000 
#include  
#include  
#include  
Char logfilename1 []="MyLog1. Log"; 
Char logfilename2 []="MyLog2. Log"; 
The static char logstr [MAXLINSIZE + 1]; 
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; 
Vsnprintf (logstr, MAXLINSIZE pszFmt, argp); 
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); 
} 
} else {
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} 
# define ASIZE 200 
# define BSIZE 240 
# define CSIZE 2 
Char Abuf [ASIZE]; 
Char Cbuf [CSIZE]; 
CRITICAL_SECTION cs_HEX; 
CRITICAL_SECTION cs_BBB; 
Struct FIFO_BUFFER {
Int the head; 
Int tail; 
Int size; 
Char data [BSIZE]; 
} BBB; 
Int No_Loop=0; 
Void HexDump) (int cn, char * buf, int len) {
int i,j,k; 
Char binstr [80]. 

The Lock (& amp; Cs_HEX); 
for (i=0; iIf (0==16) (I %) {
Sprintf (binstr, "% 3 d % 4 x -", cn, I); 
Sprintf (binstr, "% s % 02 x", binstr, buf (unsigned char) [I]); 
} else if (15==16) (I %) {
Sprintf (binstr, "% s % 02 x", binstr, buf (unsigned char) [I]); 
Sprintf (binstr, "% s", binstr); 
For (j=I - 15; j<=I; J++) {
Sprintf (binstr, "% s % c," binstr, ('! '& lt; Buf [j] & amp; & Buf [j] <='~')? Buf [j] : '. '); 
} 
The Log (" % s \ n ", binstr); 
} else {
Sprintf (binstr, "% s % 02 x", binstr, buf (unsigned char) [I]); 
} 
} 
If (0! 16)=(I %) {
16 k=16 - (I %); 
for (j=0; jSprintf (binstr, "% s", binstr); 
} 
Sprintf (binstr, "% s", binstr); 
K=16 - k; 
For (j=I - k; jSprintf (binstr, "% s % c," binstr, ('! '& lt; Buf [j] & amp; & Buf [j] <='~')? Buf [j] : '. '); 
} 
The Log (" % s \ n ", binstr); 
} 
Unlock (& amp; Cs_HEX); 
} 
Int GetFromRBuf (int cn, CRITICAL_SECTION * cs, struct FIFO_BUFFER * fbuf, char * buf, int len) {
Int lent, len1 len2; 

Lent=0; 
The Lock (cs); 
If (fbuf - & gt; Size> Len)={
Lent=len; 
If (fbuf - & gt; The head + lent> BSIZE) {
Len1=BSIZE fbuf - & gt; The head; 
Memcpy (buf, fbuf - & gt; The data + fbuf - & gt; The head, len1); 
Len2=lent - len1; 
Memcpy (buf + len1 fbuf - & gt; The data, len2); 
Fbuf - & gt; The head=len2; 
} else {
Memcpy (buf, fbuf - & gt; The data + fbuf - & gt; The head, lent); 
Fbuf - & gt; The head +=lent; 
} 
Fbuf - & gt; Size -=lent; 
} 
Unlock (cs); 
Return lent; 
} 
MYVOID thdB (void * PCN) {
Char * recv_buf; 
Int recv_nbytes; 
Int cn; 
Int wc. 
Int pb; 

Cn=(int) PCN; 
The Log (" % 3 d thdB thread begin... \ n ", cn); 
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