Hello!
I am working on a server where I should have 4 (resident)processes, one of them being "the father" of the others, so I do 3 forks. The problem that I have is that I do an accept (for sockets) in the "father" process and I want to transmit the job to one of the processes "child" with... (3 Replies)
Hello,
I would like to ask you for a little help with program I'm working on. I have problems with signals and synchronizing processes (I'm quite new to this part of programming).
Process "parent" creates new child process "child1" and this process creates new child process "child2". The... (2 Replies)
Hi!
Can someone explain me exactly this technique? Why a process (PARENT) creates a copy of itself with FORK (CHILD)? What's the reason of this behaviour? Sorry, but I cannot understand the logic behind it.
Thanks. (4 Replies)
On my *nix box, I have a telegram program.
When I go like
tel person "la\nla\nla\n"
the person sees
"la\nla\nla\n"
However, when I have a program that forks and execs tel like:
pid = fork();
if (pid < 0) {
perror("fork failed");
exit(EXIT_FAILURE);
}
if (pid == 0) {... (7 Replies)
Hi,
I need to find/implement an application that FTPs (puts) all new files in a certain directory to an external storage unit. This application should check for new files every 10 seconds (leaving the FTP connection open in between the 10 seconds).
The easiest way would be if there are... (2 Replies)
I need to ssh to a remote server and run my script there. This is my script.
$ssh = "ssh username@host";
$cmd = "$ssh 'cd <my dir> && < sudo Run_exe>'";
my $pid = fork;
if ($pid == 0){
exec $cmd;
}
When I run this I get:
pccons_getchar: got r == 0 (1 Reply)
Hello World!
I am writing code in C++ which have to launch another application X using exec().
I would like to set some limits on it using setrlimit etc...
My problem is that i don't know how to forbid using fork() and strlimit by application X.
How can i do it? (3 Replies)
Hello everybody.I want to make clear that i am not going to ask from anybody to build my asignement but i have a big problem. I can't seem to find anywhere ONE good example on C about what i am trying to do:wall:.I think it is simple. All i ask is one example, even a link is fine.
So, i want to... (1 Reply)
Hello... And thanks in advance for any help anyone can offer me on my question! I've been doing a lot of reading to try and find my answer... But I haven't had any luck
What I'm trying to understand is where a child process inherits global environment variables from? I understand the exec()... (2 Replies)
Discussion started by: bodisha
2 Replies
LEARN ABOUT OPENSOLARIS
getpid
getpid(2) System Calls getpid(2)NAME
getpid, getpgrp, getppid, getpgid - get process, process group, and parent process IDs
SYNOPSIS
#include <unistd.h>
pid_t getpid(void);
pid_t getpgrp(void);
pid_t getppid(void);
pid_t getpgid(pid_t pid);
DESCRIPTION
The getpid() function returns the process ID of the calling process.
The getpgrp() function returns the process group ID of the calling process.
The getppid() function returns the parent process ID of the calling process.
The getpgid() function returns the process group ID of the process whose process ID is equal to pid, or the process group ID of the calling
process, if pid is equal to 0.
RETURN VALUES
The getpid(), getpgrp(), and getppid() functions are always successful and no return value is reserved to indicate an error.
Upon successful completion, getpgid() returns the process group ID. Otherwise, getpgid() returns (pid_t)-1 and sets errno to indicate the
error.
ERRORS
The getpgid() function will fail if:
EPERM The process whose process ID is equal to pid is not in the same session as the calling process, and the implementation does not
allow access to the process group ID of that process from the calling process.
ESRCH There is no process with a process ID equal to pid.
The getpgid() function may fail if:
EINVAL The value of the pid argument is invalid.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|MT-Level |Async-Signal-Safe |
+-----------------------------+-----------------------------+
|Standard |See standards(5). |
+-----------------------------+-----------------------------+
SEE ALSO Intro(2), exec(2), fork(2), getsid(2), setpgid(2), setpgrp(2), setsid(2), signal(3C), attributes(5), standards(5)SunOS 5.11 27 Jan 2009 getpid(2)
10-07-2010
