I'm debugging this code under Visual Studio (not visual studio code):
#include <cstdio>
#include <signal.h>
#include <unistd.h>
int n = 0;
void handleSignal(int sig) {
//it works from terminal but not from IDE
printf("Signal received: %d - %d times\n", sig ,++n);
}
int main()
{
printf("Hi From WSL! - PID: %d\n", getpid());
auto s = signal(SIGUSR1, handleSignal);
printf("signal was %d\n", s); // prints 0
while (n<10) {
printf("sleeping - %d\n", n);
sleep(1);
}
printf("Received signals %d timeskill , exiting\n", n);
return 0;
}
I run
kill -10 <pid of process>
If I run the code from bash everithing rns fine
# output if run from bash:
$ ./LinuxConsoleApplicationWsl.out
Hi From WSL! - PID: 4953
signal was 0
sleeping - 0
sleeping - 0
sleeping - 0
sleeping - 0
sleeping - 0
sleeping - 0
sleeping - 0
sleeping - 0
sleeping - 0
Signal received: 10 - 1 times
sleeping - 1
sleeping - 1
Signal received: 10 - 2 times
sleeping - 2
Signal received: 10 - 3 times
sleeping - 3
Signal received: 10 - 4 times
sleeping - 4
Signal received: 10 - 5 times
sleeping - 5
Signal received: 10 - 6 times
sleeping - 6
Signal received: 10 - 7 times
sleeping - 7
sleeping - 7
sleeping - 7
Signal received: 10 - 8 times
sleeping - 8
Signal received: 10 - 9 times
sleeping - 9
Signal received: 10 - 10 times
Received signals 10 timeskill , exiting
(do printfs and at 10th signal sent the app exits) But if I run it from visual studio i got this unhandled exception:
What am I missing?
My own answer: updating VS to a version 17.6.5 fixed the issue, now the signal is debuggable.
As a note I report that the "exception" is still notified as such but stepping with de debugger works.