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[Problem] raise a signal in FreeBSD
Post 42981 by Namely on Saturday 8th of November 2003 01:15:07 AM
11-08-2003
[Problem] raise a signal in FreeBSD
I am trying to send a SIGUSR1 to a set of process. Please tell
me how to do. I've tried the system call raise(int sig) but it just
raise a signal of to the 'current process.'
My program is about a network chat server. When a client
connects in, The main process will fork a new process to handle
the client. Now the problem comes, assume I'm in some client
process now, and I want to send a signal that all the other client
processes can get it.
If I use rasie(), only the current client process will get it.
Is there any way that I can do?
Thanks for help
me how to do. I've tried the system call raise(int sig) but it just
raise a signal of to the 'current process.'
My program is about a network chat server. When a client
connects in, The main process will fork a new process to handle
the client. Now the problem comes, assume I'm in some client
process now, and I want to send a signal that all the other client
processes can get it.
If I use rasie(), only the current client process will get it.
Is there any way that I can do?
Thanks for help
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LEARN ABOUT LINUX
raise
RAISE(3) Linux Programmer's Manual RAISE(3) NAME
raise - send a signal to the caller SYNOPSIS
#include <signal.h> int raise(int sig); DESCRIPTION
The raise() function sends a signal to the calling process or thread. In a single-threaded program it is equivalent to kill(getpid(), sig); In a multithreaded program it is equivalent to pthread_kill(pthread_self(), sig); If the signal causes a handler to be called, raise() will only return after the signal handler has returned. RETURN VALUE
raise() returns 0 on success, and nonzero for failure. CONFORMING TO
C89, C99, POSIX.1-2001. SEE ALSO
getpid(2), kill(2), sigaction(2), signal(2), pthread_kill(3), signal(7) COLOPHON
This page is part of release 3.27 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/. GNU
2008-10-17 RAISE(3)