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add signal handler to determine if a child terminates

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This commit is contained in:
Stefan Lankes 2017-02-18 23:15:16 +01:00
parent 79623cbaf4
commit 92231f1629
1 changed files with 19 additions and 1 deletions
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20
tools/proxy.c
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@ -230,7 +230,7 @@ static int is_hermit_available(void)
ret = 1;
break;
}
PROXY_DEBUG("%s\n", line);
//PROXY_DEBUG("%s\n", line);
}
fclose(file);
@ -284,6 +284,18 @@ static void wait_hermit_available(void)
close(fd);
}
static void qemu_sigchld_handler(int sig)
{
pid_t p;
int status;
while ((p=waitpid(-1, &status, WNOHANG)) != -1)
{
fprintf(stderr, "Child %d died\n", p);
exit(1);
}
}
static int init_qemu(char *path)
{
int kvm, i = 0;
@ -295,6 +307,12 @@ static int init_qemu(char *path)
char port_str[MAX_PATH];
char* qemu_str = "qemu-system-x86_64";
char* qemu_argv[] = {qemu_str, "-nographic", "-smp", "1", "-m", "2G", "-net", "nic,model=rtl8139", "-net", hostfwd, "-chardev", chardev_file, "-device", "pci-serial,chardev=gnc0", "-monitor", monitor_str, "-kernel", loader_path, "-initrd", path, "-append", cpufreq(), NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = qemu_sigchld_handler;
sigaction(SIGCHLD, &sa, NULL);
str = getenv("HERMIT_CPUS");
if (str)