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* syslog.cc (syslog): Do not print the Windows pid. Print the Cygwin pid as an

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unsigned decimal.  On Win95 print a timestamp and attempt to lock the file up
to four times in 3 ms.
This commit is contained in:
Christopher Faylor
2003-02-22 19:35:03 +00:00
parent fe96201935
commit 878e60c561
4 changed files with 29 additions and 12 deletions
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31
winsup/cygwin/syslog.cc
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@@ -302,8 +302,7 @@ syslog (int priority, const char *message, ...)
}
if (process_logopt & LOG_PID)
{
if (pass.print ("Win32 Process Id = 0x%X : Cygwin Process Id = 0x%X : ",
GetCurrentProcessId (), getpid ()) == -1)
if (pass.print ("PID %u : ", getpid ()) == -1)
return;
}
@@ -375,6 +374,8 @@ syslog (int priority, const char *message, ...)
else
{
/* Under Windows 95, append the message to the log file */
char timestamp[24];
time_t ctime;
FILE *fp = fopen (get_win95_event_log_path (), "a");
if (fp == NULL)
{
@@ -382,24 +383,32 @@ syslog (int priority, const char *message, ...)
get_win95_event_log_path ());
return;
}
strftime (timestamp, sizeof timestamp, "%Y-%m-%d %H:%M:%S : ",
localtime (&(ctime = time (NULL))));
/* Now to prevent several syslog messages from being
interleaved, we must lock the first byte of the file
This works on Win32 even if we created the file above.
*/
HANDLE fHandle = cygheap->fdtab[fileno (fp)]->get_handle ();
if (LockFile (fHandle, 0, 0, 1, 0) == FALSE)
{
debug_printf ("failed to lock file %s", get_win95_event_log_path ());
fclose (fp);
return;
}
for (int i = 0;; i++)
if (LockFile (fHandle, 0, 0, 1, 0) == FALSE)
if (i == 3)
{
debug_printf ("failed to lock file %s", get_win95_event_log_path ());
fclose (fp);
return;
}
else
usleep (1000);
else
break;
fputs (timestamp, fp);
fputs (msg_strings[0], fp);
fputc ('\n', fp);
UnlockFile (fHandle, 0, 0, 1, 0);
if (ferror (fp))
{
debug_printf ("error in writing syslog");
}
debug_printf ("error in writing syslog");
fclose (fp);
}
}