IPC(2) Linux Programmer's Manual IPC(2)NAME
ipc - System V IPC system calls
SYNOPSIS
int ipc(unsigned int call, int first, int second, int third, void *ptr, long fifth);
DESCRIPTION
ipc() is a common kernel entry point for the System V IPC calls for messages, semaphores, and shared memory. call determines which IPC
function to invoke; the other arguments are passed through to the appropriate call.
User programs should call the appropriate functions by their usual names. Only standard library implementors and kernel hackers need to
know about ipc().
CONFORMING TO
ipc() is Linux specific, and should not be used in programs intended to be portable.
SEE ALSO msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2), semop(2), shmat(2), shmctl(2), shmdt(2), shmget(2)Linux 1.2.4 1995-04-15 IPC(2)
Check Out this Related Man Page
IPC(2) Linux Programmer's Manual IPC(2)NAME
ipc - System V IPC system calls
SYNOPSIS
int ipc(unsigned int call, int first, int second, int third,
void *ptr, long fifth);
DESCRIPTION
ipc() is a common kernel entry point for the System V IPC calls for messages, semaphores, and shared memory. call determines which IPC
function to invoke; the other arguments are passed through to the appropriate call.
User programs should call the appropriate functions by their usual names. Only standard library implementors and kernel hackers need to
know about ipc().
CONFORMING TO
ipc() is Linux-specific, and should not be used in programs intended to be portable.
NOTES
On some architectures--for example x86-46 and ARM--there is no ipc() system call; instead msgctl(2), semctl(2), shmctl(2), and so on really
are implemented as separate system calls.
SEE ALSO msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2), semop(2), semtimedop(2), shmat(2), shmctl(2), shmdt(2), shmget(2)COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2012-10-16 IPC(2)
unix IPC
i would like to know the method of usage of semaphores on shared memory segments the topic seems very difficult to understand mainly when difrent proceses communicate instantly and how do i avaoid deadlock situation (2 Replies)
I know that there are lots of UNIX pros here so I'm asking for some help. I have recently acquired 2 SUN IPC Workstations. The stations were destined for the garbage so I was unable to talk to the owners. Neither of them will make it through the boot process. One gives an error "le0: No... (2 Replies)
:) Hello, i have been given the following code to help me learn how to use signals, it won't compile. The problem maybe because this was written for use in Unix and i am trying to compile in Linux.
The error i get says that SIGPIPE and SIG_IGN are undeclared.
I think that these are defined... (2 Replies)
We have a requirement to port applications from Unix to HP Vax OpenVMS Server.
For this I need to self-educate on various IPC and networking APIs available in OpenVMS. I goggled a lot but could not find of how to implement Semaphores, Message Queues and all other forms of IPC available in Unix... (7 Replies)
Hi, so I've got this program("main") that fork executes another ("user"). These programs communicate through fifos.
One communication is a spawn call, where user passes an executable, main forks and executes it. So, I'm keeping track of all my processes using a task table. After the fork (for... (6 Replies)
Hello,
My question is related to "pipcs -qa" command under HP-UX 11i PA-RISC 64 bits.
We have a little C program that creates posix ipc message queues using the mq_open() system function.
The program fail with 'No space left on device' error when we create big queues. What is the system... (6 Replies)
Hi,
Anyone knows whether it is possible to link/relate an IPC semaphore to a particular process ID?
e.g.
# ipcs -as
IPC status from <running system> as of Wednesday July 2 14:10:39 EST 2008
T ID KEY MODE OWNER GROUP CREATOR CGROUP NSEMS OTIME CTIME... (8 Replies)
i want to write a C chat program that communicates over IPC(inter process communication), that could be run using 2 seperate terminal windows within the same computer. so that wat u type in one terminal window , should appear on the other and vice versa...
could some one please help me with the... (2 Replies)
Hiya Everybody just joined,
Not sure if this is the right section:o
I require abit of an assistance with IPC!
I know there are different types of IPC porcesses like signals, semaphores, mutexes, shared memory, message queues, pipes and sockets.
Now say a system has a number of... (4 Replies)
Hi,
I wanted ideas on how to achieve this efficiently using C++ concept:-
I have a DB table that contains rows of endpoints (say IDs vs names). There is process say "A" that calls another process B's API to increment counters if an operation is performed by an endpoint.
DB table:-
ID ... (3 Replies)
What if the operating systems would not use any ipc mechanism in order to exchange the datas with each other,which technique could be an alternative for messaging between the processes?Do you guys think using the vfork () system call to duplicate processes is a logical solution for this problem? (4 Replies)
Hi!
I wanted to know the advantages / disadvantages of different IPC mechanims such as sockets, pipes (unnamed) , shared memory & message queues.
Pipes for example i hear are fast , but are difficult to debug as compared to sockets.
Can you guys please name some situations where one is... (4 Replies)
I am working on a large program which is always up and must run in as many Linux flavors as possible, i.e. be portable. I have created a number of general utility functions for common tasks it needs to do, and one of these utility functions goes out to the shell to give a Linux command and return... (5 Replies)
here i havent tried to make a communication between two terminals of different machines
not either any socket program
my simple aim is use ipc for chat between two soft terminals(tty's)
here is my view two terminals with two applications working on same fifo
one fifo b/w two terminals try... (3 Replies)
Greetings:
I am posting this because my searches for this problem only came up with two posts and no helpful suggestions. I have a "solution" (read work-around hack) and have not tried yet to find a root cause, and may never because I am busy doing other things (read working to pay the bills).
... (10 Replies)