03-18-2006
RTM is right about the rules. But this is a tough problem and you have done a lot of work. So I will drop one hint. You are invoking fflush() only some of the time. Invoke it after every printf() or drop it altogether and use "setvbuf(stdout, NULL, _IONBF, 0);" at the beginning of the program.
I love the switch to chopsticks! I have always heard it with forks. It makes sense with chopsticks.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
Just recently we seem to be getting the following error message relating to SSH when we run the UNIX script in background mode:
warning: You have no controlling tty. Cannot read confirmation.^M
warning: Authentication failed.^M
Disconnected; key exchange or algorithm negotiation... (1 Reply)
Discussion started by: budrito
1 Replies
2. Shell Programming and Scripting
Hi, folks.
Sorry for bothering, but maybe someone could help me please.
The problem is the following:
there is some script that copies files from local file system to AFS. The copying is performed with dd command.
The script copies data into some AFS volumes.
The problem appeared with one... (0 Replies)
Discussion started by: Anta
0 Replies
3. Solaris
Hi
I am right now facing a strange hardware problem. System get booted with the following error:
Fatal Error Reset
CPU 0000.0000.0000.0003 AFSR 0100.0000.0000.0000 SCE
AFAR 0000.07c6.0000.1000
SC Alert: Host System has Reset
It happen 4 or 5 times and get the same error every time.I... (8 Replies)
Discussion started by: girish.batra
8 Replies
4. AIX
1) when user login to the server the session got colosed. How will resolve?
2) While firing the command ls -l we are not able to see the any files in the director. but over all view the file system using the command df -g it is showing 91% used. what will be the problem?
Thanks in advance. (1 Reply)
Discussion started by: pernasivam
1 Replies
5. AIX
Dear ALL.
I installed AIX OS on customer sites.
but Only one site is too slow when I connected telnet, ftp..
Ping is too fast. but telnet and FTP is not connected..
of course i check the configuration file on aix but it's normal.
Do any Idea??
thanks in advance.
- Jun - (3 Replies)
Discussion started by: Jeon Jun Seok
3 Replies
6. Programming
Hi.
I`m writng script solving problem of dining philosophers but it does not work.
PHILOSOPHER SRIPT:
#!/bin/bash
./start.conf
cd stol
a=$1
#echo a$a
#echo ilosc$ilosc
#echo dziel$(($%$ilosc))
if ; then
#next=$%$ilosc]
next=1
else
next=$
fi (0 Replies)
Discussion started by: Aryman1983
0 Replies
7. IP Networking
Hi,
This is rather a question from a "user" than from a sys admin, but I think this forum is apropriate for the question.
I have an adress with automatic email forwarding and for some senders (two hietherto), emails are bouncing. This has really created a lot of problems those two time so I... (0 Replies)
Discussion started by: carwe
0 Replies
8. UNIX for Dummies Questions & Answers
I don't know if you guys get this problem sometimes at Terminal but I had been having this problem since yesterday :( Maybe I overdid the Terminal. Even the codes that used to work doesn't work anymore.
Here is what 's happening:
* I wanted to remove lines containing digits so I used this... (25 Replies)
Discussion started by: Nexeu
25 Replies
9. Homework & Coursework Questions
----- (1 Reply)
Discussion started by: mkchantony
1 Replies
10. IP Networking
Hi everyone,
I am experiencing discontinuity of Internet service, this started 1 month ago. Everything worked very well for 1 year of intensive use, but now, I have problems reaching my gateway.
The gateway is not my router but a node belonging to my ISP and I share the same public IP with... (3 Replies)
Discussion started by: remic
3 Replies
LEARN ABOUT REDHAT
setbuf
SETBUF(3) Linux Programmer's Manual SETBUF(3)
NAME
setbuf, setbuffer, setlinebuf, setvbuf - stream buffering operations
SYNOPSIS
#include <stdio.h>
void setbuf(FILE *stream, char *buf);
void setbuffer(FILE *stream, char *buf, size_tsize);
void setlinebuf(FILE *stream);
int setvbuf(FILE *stream, char *buf, int mode , size_t size);
DESCRIPTION
The three types of buffering available are unbuffered, block buffered, and line buffered. When an output stream is unbuffered, information
appears on the destination file or terminal as soon as written; when it is block buffered many characters are saved up and written as a
block; when it is line buffered characters are saved up until a newline is output or input is read from any stream attached to a terminal
device (typically stdin). The function fflush(3) may be used to force the block out early. (See fclose(3).) Normally all files are block
buffered. When the first I/O operation occurs on a file, malloc(3) is called, and a buffer is obtained. If a stream refers to a terminal
(as stdout normally does) it is line buffered. The standard error stream stderr is always unbuffered by default.
The setvbuf function may be used on any open stream to change its buffer. The mode parameter must be one of the following three macros:
_IONBF unbuffered
_IOLBF line buffered
_IOFBF fully buffered
Except for unbuffered files, the buf argument should point to a buffer at least size bytes long; this buffer will be used instead of the
current buffer. If the argument buf is NULL, only the mode is affected; a new buffer will be allocated on the next read or write opera-
tion. The setvbuf function may only be used after opening a stream and before any other operations have been performed on it.
The other three calls are, in effect, simply aliases for calls to setvbuf. The setbuf function is exactly equivalent to the call
setvbuf(stream, buf, buf ? _IOFBF : _IONBF, BUFSIZ);
The setbuffer function is the same, except that the size of the buffer is up to the caller, rather than being determined by the default
BUFSIZ. The setlinebuf function is exactly equivalent to the call:
setvbuf(stream, (char *)NULL, _IOLBF, 0);
RETURN VALUE
The function setvbuf returns 0 on success. It can return any value on failure, but returns nonzero when mode is invalid or the request
cannot be honoured. It may set errno on failure. The other functions are void.
CONFORMING TO
The setbuf and setvbuf functions conform to ANSI X3.159-1989 (``ANSI C'').
BUGS
The setbuffer and setlinebuf functions are not portable to versions of BSD before 4.2BSD, and are available under Linux since libc 4.5.21.
On 4.2BSD and 4.3BSD systems, setbuf always uses a suboptimal buffer size and should be avoided.
You must make sure that both buf and the space it points to still exist by the time stream is closed, which also happens at program termi-
nation.
For example, the following is illegal:
#include <stdio.h>
int main()
{
char buf[BUFSIZ];
setbuf(stdin, buf);
printf("Hello, world!
");
return 0;
}
SEE ALSO
fclose(3), fflush(3), fopen(3), fread(3), malloc(3), printf(3), puts(3)
Linux 2001-06-09 SETBUF(3)