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w32: Disable buffering for log file 

W32 does not support line buffering, but it supports unbuffered output.

Unbuffered output is better for writing to qemu.log than fully buffered
output because it also shows the latest log messages when an application
crash occurs.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Stefan Weil 2011-12-03 22:32:37 +01:00 committed by Blue Swirl
parent 946fc45996
commit daf767b16a
1 changed files with 4 additions and 2 deletions
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6
exec.c
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@ -1603,8 +1603,10 @@ void cpu_set_log(int log_flags)
static char logfile_buf[4096];
setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf));
}
#elif !defined(_WIN32)
/* Win32 doesn't support line-buffering and requires size >= 2 */
#elif defined(_WIN32)
/* Win32 doesn't support line-buffering, so use unbuffered output. */
setvbuf(logfile, NULL, _IONBF, 0);
#else
setvbuf(logfile, NULL, _IOLBF, 0);
#endif
log_append = 1;