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Re: signal(SIGCHLD,SIG_IGN) and signal(SIGCHLD,SIG_DFL) 11 Years Ago by L7Sqr … default action for `SIGCHLD` is to ignore the signal so `SIG_IGN` and `SIG_DFL` seem to invoke the same bahavior.… via fork(2) inherits a copy of its parent's signal dis‐ positions. During an execve(2), the dispositions of … of ignored signals are left unchanged. See `man 7 signal` and `man 2 signal` for more details. signal(SIGCHLD,SIG_IGN) and signal(SIGCHLD,SIG_DFL) 11 Years Ago by Learningvinit What is the behavioral difference between signal(SIGCHLD,SIG_IGN) and signal(SIGCHLD,SIG_DFL)? If we replace signal(SIGCHLD,SIG_IGN) with signal(SIGCHLD,SIG_DFL), What can be the impact? Will it craete a Zombie process? Signal error from mathematical operation in C 18 Years Ago by roby4eldiablo Hi all, i need help about signal. I want know what signal are generated from system when a mathematical operation give error (overflow, underflow, division for 0) and how catch the signal. Maybe i can use a trap? How can i implement the trap? Maybe i can use matherr function? Signal&Slot problem with PyQt 16 Years Ago by TheOneElectroni …calendar!") self.connect(self, SIGNAL("QMouseEvent()"), self.Opacity)…(Layout) self.connect(self.CloseButton, SIGNAL("pressed()"), self.close) … Signal assignment in VHDL 13 Years Ago by hg_fs2002 I'm trying to assign a signal to another signal, I don't get any error. However, when I simulate … my port mapping does not have any problem and doutt signal is correct. [CODE]component RAM is port ( address : in std_logic_vector… Re: Signal strength from router to computer 19 Years Ago by zeroth …. So let´s consider the Roadrunner, you can have a signal on the Dlink of only 10% strength and you will… you can maintain about 40-50% signal strength... Go back to wireless and forget the signal strength unless you are out in… Signal strength from router to computer 19 Years Ago by ingeborgdot@yah I can't get my one computer to have excellent signal strength in the other room. How can this be accomplished … from the router. What do you suggest to boost the signal? Should I switch to a different antenna on my receiving… Re: Signal&Slot problem with PyQt 16 Years Ago by TheOneElectroni … system. The solution they suggested me is to forget about signal&slot and write the following function outside the .__init__… Re: Signal strength from router to computer 19 Years Ago by mikeandike22 … can come up with some better suggestions there are wireless signal boosters that you can get for like $30-50 or… Signal Handler for arithmetical error (overflow, underflow, div by zero) 18 Years Ago by roby4eldiablo … where i can find an example of this kind of signal handler? i try to use fenv.h but on cygwin… Re: Signal Handler for arithmetical error (overflow, underflow, div by zero) 18 Years Ago by thekashyap Does cygwin have any kinda support for signal handling? If yes d'u know which is the file that defines teh signals... ? Re: Signal Handler for arithmetical error (overflow, underflow, div by zero) 18 Years Ago by roby4eldiablo with signal.h i can catch SIGFPE, but how can i make the handler? I have the problem of catch Overflow, underflow and div by zero, and for all i must do different operation. If u give me a skeleton of the handler i can make it. i don't know where begin with it. signal to noise ratio calculation 15 Years Ago by srisan need a c program for calculating signal to noise ratio in wireless networks signal handling with parent and child 15 Years Ago by aliase Hi, I'm having a problem with signal handling between parent and child. What I'm trying to do is for both parent and child to be able to receive ctrl-z, however when the child receives ctrl-z, parent receives it as well and I don't want parent to do that. Any idea how to fix this? Thanks. 'Signal out of range ' warning on monitor 14 Years Ago by mahela007 … and then the monitor displays the message saying "WArning, Signal our of range" the screen starts to flicker terribly… Signal strength bars 13 Years Ago by clansman I'm looking for signal strength bars like below link. I need all icons 1 to 5. [url]http://buyme.ae/images/Signal_Strength_Bar-1.png[/url] Thanks a lot. Re: signal output handler 15 Years Ago by forestwwq …;stdio.h> #include <stdlib.h> #include <signal.h> #include <unistd.h> void sigroutine(int…("process id is %d ",getpid()); signal(SIGHUP, sigroutine); /*set the signal handler.*/ signal(SIGINT, sigroutine); signal(SIGQUIT, sigroutine); while(1) { c = getchar… Re: signal output handler 15 Years Ago by frk … wrong because youre not allowed to call stdio functions from signal handlers since they are not reentrant. like, the interrupted getchar…: only write a flag (of type volatile sig_atomic_t) in a signal handler and let someone else check that flag and print… Re: Signal strength vs throughput speed question 17 Years Ago by Kashif r u using internet through server ? if yes then BW quota system can limit. or else internet provider. as ur question that 24 mbs connectivity in wireless does provide good speed but u should check ur AP or router that how much packet loss due to signal which can b better through AMP. Siganls, processes, signal Handling. 13 Years Ago by NickJoe …lt;sys/wait.h> /* The type for signal handler functions * You can use this. */ typedef… * @return -1 if interrupted by a signal or if there is an error * otherwise the… * IMPORTANT!!!: This function should restore the original alarm * signal handler before returning! * * */ void timer_handler(int signum){ … (C++) (QT) Custom Signal error 11 Years Ago by J-P1988 …layoutFormulaireChoisirNom = new QHBoxLayout(formulaireCreationPersonnageChoisirNom); layoutFormulaireChoisirNom->addWidget(choisirNom); connect(formulaireCreationPersonnageChoisirNom, SIGNAL(customButtonClicked(int)),this, SLOT(boiteCreationPersonnageChoisirEquipement())); QList<QWizard::WizardButton>… can't use signal() and kil() funcions! 12 Years Ago by piero.costa …]=fork(); if(pid[0]==0) { printf("Sending signal:\n\n"); ppid=getppid(); kill(ppid, SIGUSR1); …return(0); } Maybe I didn't understand how the signal function works... But as far as I know, to… pointer the address of the function that will handle the signal ( hand_pt = &handler; ). Is my line of … exiting thread application with signal interrupt in python 10 Years Ago by krystosan … thread. import Queue import urllib2 import os import signal import sys import time import threading from socket import… done self.queue.task_done() def main(): # Register signal in main thread signal.signal(signal.SIGINT, do_exit) try: # spawn a pool of… How to check signal emit finished in python 10 Years Ago by Ravi_exact …times with 3 different methods. when i emit this signal, it has to execute these 3 methods. It… works perfectly fine. ValueChanged = QtCore.Signal(list) ValueChanged.connect(method1) ValueChanged.connect(method2) ValueChanged.connect… been executed or not, i.e the status of signal ( signal is in emitting state, emitted state ). a) I… Need help writing a wrapper function for fork() and signal functions. 17 Years Ago by Ratte … not sure if I am returning the right thing for signal. Any help greatly appreciated. [code] pid_t Fork(void) { …} return p; } void (*Signal (int sig, void (*disp) (int))) (int) { if ((signal(sig, disp))==SIG_ERR) { perror ("signal error"); exit(13… ValueError: signal only works in main thread. HUH? It's worked before. 15 Years Ago by JustAnotherJoe …same code without any problems. I call SIGNAL within a thread and it's working like… now I'm getting this error: ValueError: signal only works in main thread After encountering this …, I update the progressbar. I use a signal so that if doOne() in the ping.py… to resolve the problem by adding a signal prior to calling the thread but that … add signal handler in code 15 Years Ago by msaenz …sleep(25) def handler(signum, frame): print 'Signal handler called with signal', signum if __name__ == "__main__": …while True: try: signum = int(sys.argv[1]) signal.signal(signum, onSignal) ev.sleep(10000) except: pass [/code]… Linux Signal Handling 15 Years Ago by sree_ec …include <stdlib.h> #include <signal.h> struct sigaction oldHandler; void myHandler(int… not present, program will get continuous calls to this signal handler return; } int main(int argc, char *… 0) { perror("Failed to install handler for signal SIGSEGV"); exit(1); } #if 1 /* This… Re: Siganls, processes, signal Handling. 13 Years Ago by nezachem … a man page for alarm(). The if/else in the signal handler is meaningless: the handler is installed specifically for SIGALRM… Re: Siganls, processes, signal Handling. 13 Years Ago by NickJoe Oh, I see. So, I have to set the alarm. I for some reason thought mygets did that on its own. I tried the changes you suggested, and it works just fine now! I realised that I didn't have to terminate the process, because the signal does it anyway. EDIT: How rude of me! I forgot to thank you! Thank you for the help!