Ok, I'm sure this is a total newbie question, but I think I'm in the right place, no?
I'm trying to call a perl module from a cgi script - Mail::Sendmail - and my web host installed the module in a directory that doesn't seem to be accessible, at least not the way I'm trying. But I thought you... (1 Reply)
I am trying to find a way to check the current status of a file. Such as some cron job processes are dependent on the completion of others. if a file is currently being accessed / modified or simply open state I will wait until it is done being processed before attempting the next process on that... (3 Replies)
Hi,
look at the following code:
The client after estabilishing a connection with the server does the following:
if ((peter = fopen(argv, "r")) == NULL){
printf("errore\n");
exit(0);
}
... (11 Replies)
I have a requirement to close all the file descriptors from 3 to 1024 for a particular application.
Right now, this is how I do it ..
for ( int i = 3 ; i <= 1024; ++i )
close(i);
The change I am looking at is, I want to do away with the number 1024 and replace it with a constant which... (4 Replies)
Im working on writing a small operating system. I am currently working on implementing dup, dup2, pipe, and close and I need to implement some type of file descriptor table in my PCB.
I was wondering if there is anyone who is familiar with linux/unix implementation of these tables who could... (6 Replies)
Hello All,
Im opening a file desciptor in perl and sending data using print CMD "$xyz".
is there a limit to the length of the string that I can give to this CMD at a time. (3 Replies)
Hello,
How can i use file descriptor in a script to read 2 files at the same time and extract line 200 from file 1 and line 500 from file 2.
Thanks. (6 Replies)
hello,
Someone can help me with redirectors?
I am writing this script in bash enviroment on Fedora:
exec 4<> /dev/tcp/10.10.11.30/5000 #open socket in input/output
strings<&4 >file.txt &
I send file descriptor 4 to string command to purge data stream from special char while come from... (3 Replies)
Discussion started by: rattoeur
3 Replies
LEARN ABOUT LINUX
erl_global
erl_global(3erl) C Library Functions erl_global(3erl)NAME
erl_global - Access globally registered names
DESCRIPTION
This module provides support for registering, looking up and unregistering names in the Erlang Global module. For more information, see the
description of Global in the reference manual.
Note that the functions below perform an RPC using an open file descriptor provided by the caller. This file descriptor must not be used
for other traffic during the global operation or the function may receive unexpected data and fail.
EXPORTS
char ** erl_global_names(fd,count)
Types int fd;
int *count;
Retrieve a list of all known global names.
fd is an open descriptor to an Erlang connection.
count is the address of an integer, or NULL. If count is not NULL, it will be set by the function to the number of names found.
On success, the function returns an array of strings, each containing a single registered name, and sets count to the number of
names found. The array is terminated by a single NULL pointer. On failure, the function returns NULL and count is not modified.
Note:
It is the caller's responsibility to free the array afterwards. It has been allocated by the function with a single call to malloc() , so a
single free() is all that is necessary.
int erl_global_register(fd,name,pid)
Types int fd;
const char *name;
ETERM *pid;
This function registers a name in Global.
fd is an open descriptor to an Erlang connection.
name is the name to register in Global.
pid is the pid that should be associated with name . This is the value that Global will return when processes request the location
of name .
The function returns 0 on success, or -1 on failure.
int erl_global_unregister(fd,name)
Types int fd;
const char *name;
This function unregisters a name from Global.
fd is an open descriptor to an Erlang connection.
name is the name to unregister from Global.
The function returns 0 on success, or -1 on failure.
ETERM * erl_global_whereis(fd,name,node)
Types int fd;
const char *name;
char *node;
fd is an open descriptor to an Erlang connection.
name is the name that is to be looked up in Global.
If node is not NULL, it is a pointer to a buffer where the function can fill in the name of the node where name is found. node can
be passed directly to erl_connect() if necessary.
On success, the function returns an Erlang Pid containing the address of the given name, and node will be initialized to the node-
name where name is found. On failure NULL will be returned and node will not be modified.
Ericsson AB erl_interface 3.7.3 erl_global(3erl)