37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
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#include<stdio.h>
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#include <sys/types.h>
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#include <signal.h>
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#include <unistd.h>
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#include <cstdlib>
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//This function kills the process that makes a call to this function
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void kill_func(int killSignal)
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{
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printf("Received kill signal %d\n",killSignal);
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printf("\tDying process %d\n",getpid());
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exit(0);
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}
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//this function prints a message and changes the function to handle the SIGINT command to kill_func()
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void myFunction(int sigVal)
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{
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printf("Received signal %d\n", sigVal);
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printf("Now you can kill me..\n");
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signal(SIGINT,kill_func);
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}
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int main()
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{
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//ignore the SIGINT signal
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// .. SIGINT is ctrl+c
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// .. SIG_IGN is signal ignore
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// .since we ignore the signal ctrl+c, you cannot terminate this process with ctrl+c
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signal(SIGINT,SIG_IGN);
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//for alarm signal, call function myFunction()
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// .. means when alarm goes off, myFunction will be called
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signal(SIGALRM,myFunction);
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//set alarm for 15 seconds from now
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alarm(15);
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printf("This gets printed as soon as alarm is called\n");
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//just running infinitely
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while(1);
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}
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