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Diffstat (limited to 'lab5_shelllab/myint.cc')
-rw-r--r-- | lab5_shelllab/myint.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lab5_shelllab/myint.cc b/lab5_shelllab/myint.cc new file mode 100644 index 0000000..6eda5c1 --- /dev/null +++ b/lab5_shelllab/myint.cc @@ -0,0 +1,36 @@ +/* + * myint.c - Another handy routine for testing your tiny shell + * + * usage: myint <n> + * Sleeps for <n> seconds and sends SIGINT to itself. + * + */ +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <signal.h> + +int main(int argc, char **argv) +{ + int i, secs; + pid_t pid; + + if (argc != 2) + { + fprintf(stderr, "Usage: %s <n>\n", argv[0]); + exit(0); + } + secs = atoi(argv[1]); + + for (i = 0; i < secs; i++) + sleep(1); + + pid = getpid(); + + if (kill(pid, SIGINT) < 0) + fprintf(stderr, "kill (int) error"); + + exit(0); +} |