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Programming
kill priority
Post 302275292 by nicos on Friday 9th of January 2009 04:30:08 PM
01-09-2009
Quote:
....
Code:
pid = fork();
errno=0;
if(pid == 0) //Target Program-Child Process
{
dup2(fd2,STDOUT_FILENO);
dup2(fd2,STDERR_FILENO);
close(fd2);close(fd1);
execl(argv[2],argv[3],argv[4],NULL);
//--------------------------------------------pipe -->return here only in the case of execve failure
close(mypipe[0]);
write(mypipe[1],strerror(errno),(strlen(strerror(errno))+1));
//-------------------------------------------end of pipe-----
exit(EXIT_FAILURE);
}
else if (pid>0)//Fault Injector Process-Parent Process
{
sprintf(proc_status,"/proc/%d/status",pid);
timer(0.100);
f12=fopen(proc_status,"r");fseek(f12,20,SEEK_SET);str=fgetc(f12);
if(str!='Z'){shoot++;kill(pid,9);}
waitpid(pid,&status,0);//wait for child to finish or interrupt
....
void timer(float cycle)//timer in microsec precision
{
float count=0.0;
int loop=1;
while(loop)
{
usleep(1000);
count+=0.001;
if(count>=cycle)
{loop=0;}
}
}Last edited by Franklin52; 01-10-2009 at 04:47 AM.. Reason: adding code tags
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kill(1) General Commands Manual kill(1) Name kill - send a signal to a process Syntax kill [-sig] processid... kill -l Description The command sends the TERM (terminate, 15) signal to the specified processes. If a signal name or number preceded by `-' is given as first argument, that signal is sent instead of terminate. For further information, see The terminate signal kills processes that do not catch the signal; `kill -9 ...' is a sure kill, as the KILL (9) signal cannot be caught. By convention, if process number 0 is specified, all members in the process group (that is, processes resulting from the current login) are signaled. This works only if you use and not if you use To kill a process it must either belong to you or you must be superuser. The process number of an asynchronous process started with `&' is reported by the shell. Process numbers can also be found by using It allows job specifiers ``%...'' so process ID's are not as often used as arguments. See for details. Options -l Lists signal names. The signal names are listed by `kill -l', and are as given in /usr/include/signal.h, stripped of the common SIG prefix. See Also csh(1), ps(1), kill(2), sigvec(2) kill(1)