Search Results

It's dead, Jim!

:cool:

For some reason that reminds me of this:
Everybody loves Eric Raymond So I married a Kernel Programmer...

I guess what prompted all this was the following remark (which I might even have overlooked since I didn't read the entire thread in detail):



Certainly I agree that the properties of scope,...

I'm not sure how to respond to this because I don't see the point you're making, or how it's relevant to the topic at hand.

For what it's worth, it is my opinion that address space layout is not a...

I don't think the way you are using this term is common. Most of the time when people refer to "the heap" of a program, they mean the area(s) from which dynamic memory is allocated...

The reason pointer arithmetic is scaled for the base type is simply to support array operations.

Given

int x[2];

... we access the second element of the array by writing x[1] or equivalently...

Right, it just shows how to read the data. You'd have to store and evaluate it yourself. You will probably also want to handle backspace (\b) and print "\b \b" to erase that last character from the...

The code is missing one or more includes.

If you're on a newish system, try adding "#include <sys/select.h>". Otherwise, try "#include <sys/types.h>" and "#include <unistd.h>".

Jim's code looks...

The proper behavior is to wait for one character. I have used this construct (~ICANON|ECHO, VMIN=1, VTIME=0) on tons of systems (Linux, *BSD, OSX, AIX, Tru64 and Digital UNIX, IRIX, HP-UX, UnixWare)...

So you're saying 1 is the correct setting, right? :) We do want to block, reading one character at the time, and that's just normal behavior for noncanonical terminals unless you're using O_NONBLOCK....

I haven't tried your code, but this line bothers me:

term.c_cc[VMIN]=0;

Isn't that supposed to be 1 for what you're looking to do? Maybe your OS handles the 0 case differently from those...

Look up "spurious wakeups".

The function could return for some reason other than the thread signaling the condition variable. In practice some implementations have an unrestartable...

I hope you are aware that file locking doesn't prevent any process from doing anything - apart from setting a conflicting lock of course - if you didn't explicitly request mandatory locking.

The...

I think some versions of their implementation also drop packets during system memory shortage even after having reported availability with select(). For TCP sockets, I believe there may be a race...

Just from looking at that single post and its title, I believe you misunderstood the discussion/conclusion in that thread.

When the kernel people speak of "breaking" select(), they mean altering...

You can also fork() and read the result of getppid() from the child or raise() a signal with SA_SIGINFO set and examine si_pid or use msgsnd() and look at msg_lspid for the message queue or send PID...

So you're on Solaris. Please forget about /usr/ucb/cc, it's a BSD compiler and doesn't have "high tech" ANSI features like, ... the const keyword. Try /cc/SUNWspro/bin/cc. If you're on Solaris 10,...

Here's what I use to catch accidental variable modifications from other functions:

#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
...

Read up on

opendir()/readdir()/closedir()/fnmatch()

or

glob()

ftw() (with fnmatch()) may be of interest as well if you do not care about portability with BSD systems - everyone but they...

.

.

.

I'm sorry, we won't do your homework. See point 6 of the rules:

https://www.unix.com/showthread.php?threadid=2971

Ask your teacher if you're stuck. (and buy ``Advanced Programming in the UNIX...

#!/bin/sh
if `test -d /path/to/directory`; then
# does exist
else
# does not exist
fi

The artificial restriction tells us that this is a homework assignment. If you read the unix.com rules:

https://www.unix.com/showthread.php?s=&threadid=2971

... you'll see that homework...

.