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tests: refactor signal test

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Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg committed 2021-06-08 21:29:05 +02:00
1 parent 1db9b6eb8e
commit 241313a2bd
1 file changed
+45 -39
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tests/signal.c
+45 -39
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@@ -36,6 +36,7 @@
#define DO_SEGFAULT 1 #define DO_SEGFAULT 1
typedef struct { typedef struct {
pid_t pid;
int magic; int magic;
void *ptr; void *ptr;
} arg_t; } arg_t;
@@ -48,10 +49,10 @@ static arg_t arg = {
static int callback(arg_t *arg, int event, void *foo) static int callback(arg_t *arg, int event, void *foo)
{ {
arg_t *event_arg = (arg_t *)foo; arg_t *event_arg = (arg_t *)foo;
printf("child: got magic %d and ptr %p, with event %d and event arg %p\n", printf("child[%d] magic %d ptr %p, event %d event arg %p\n",
arg->magic, arg->ptr, event, event_arg); getpid(), arg->magic, arg->ptr, event, event_arg);
arg->magic = 7331; arg->magic = 7331;
arg->ptr = &event_arg; arg->ptr = &event_arg;
@@ -65,50 +66,55 @@ static int callback(arg_t *arg, int event, void *foo)
return 42; return 42;
} }
static void sigsegv_cb(uev_t *w, void *arg, int events) static void sig_cb(uev_t *w, void *cbarg, int events)
{ {
printf("Got SIGSEGV (%d) from PID %d\n", w->siginfo.ssi_signo, arg_t *arg = (arg_t *)cbarg;
w->siginfo.ssi_pid);
warnx("PID %d caused segfault.", getpid()); switch (w->signo) {
exit(-1); case SIGSEGV:
// printf("Got SIGSEGV (%d) from PID %d\n", w->siginfo.ssi_signo, w->siginfo.ssi_pid);
warnx("PID %d caused segfault.", getpid());
exit(-1);
break;
case SIGCHLD:
if (arg->pid != w->siginfo.ssi_pid)
err(1, "wrong child exited pid %d vs ssi_pid %d",
arg->pid, w->siginfo.ssi_pid);
warnx("Got SIGCHLD (%d), PID %d exited, bye.", w->siginfo.ssi_signo, arg->pid);
break;
default:
err(1, "unhandled signal %d", w->siginfo.ssi_signo);
}
} }
static void sigchld_cb(uev_t *w, void *arg, int events) static void work_cb(uev_t *w, void *cbarg, int events)
{ {
arg_t *arg = (arg_t *)cbarg;
pid_t pid; pid_t pid;
int rc = 0;
printf("Got SIGCHLD (%d) from PID %d\n",
w->siginfo.ssi_signo, w->siginfo.ssi_pid);
pid = waitpid(-1, NULL, WNOHANG);
if (-1 != pid)
warnx("PID %d exited, bye.", pid);
}
static void work_cb(uev_t *w, void *arg, int events)
{
pid_t pid;
int status = 0;
pid = fork(); pid = fork();
if (-1 == pid) if (-1 == pid)
err(1, "fork"); err(1, "fork");
if (!pid) { if (!pid)
status = callback(arg, 6137, NULL); exit(callback(arg, 6137, NULL));
exit(status);
}
if (waitpid(pid, &status, 0) == -1) arg->pid = pid;
pid = waitpid(pid, &rc, 0);
if (pid == -1)
err(1, "waitpid"); err(1, "waitpid");
if (WIFEXITED(status)) if (WIFEXITED(rc))
printf("Child exited normally => %d\n", WEXITSTATUS(status)); printf("Child %d exited normally => %d\n", pid, WEXITSTATUS(rc));
else if (WCOREDUMP(status)) else if (WCOREDUMP(rc))
printf("Child crashed! %s\n", DO_SEGFAULT printf("Child %d crashed%s\n", pid, DO_SEGFAULT
? "As expected, everything is OK." ? ", as expected, everything is OK."
: "This should not happen!"); : ". This should not happen!");
else else
printf("Child did not exit normally!\n"); printf("Child %d did not exit normally!\n", pid);
} }
static void exit_cb(uev_t *w, void *arg, int events) static void exit_cb(uev_t *w, void *arg, int events)
@@ -119,17 +125,17 @@ static void exit_cb(uev_t *w, void *arg, int events)
int main(void) int main(void)
{ {
uev_t deadline, sigsegv, sigchld, timeout;
uev_ctx_t ctx; uev_ctx_t ctx;
uev_t sigsegv_watcher, sigchld_watcher, timeout_watcher, deadline_watcher;
/* Initialize libuEv */ /* Initialize libuEv */
uev_init(&ctx); uev_init(&ctx);
/* Setup callbacks */ /* Setup callbacks */
uev_signal_init(&ctx, &sigsegv_watcher, sigsegv_cb, NULL, SIGSEGV); uev_signal_init(&ctx, &sigsegv, sig_cb, NULL, SIGSEGV);
uev_signal_init(&ctx, &sigchld_watcher, sigchld_cb, NULL, SIGCHLD); uev_signal_init(&ctx, &sigchld, sig_cb, &arg, SIGCHLD);
uev_timer_init(&ctx, &timeout_watcher, work_cb, &arg, 400, 0); uev_timer_init(&ctx, &timeout, work_cb, &arg, 400, 0);
uev_timer_init(&ctx, &deadline_watcher, exit_cb, NULL, 1000, 0); uev_timer_init(&ctx, &deadline, exit_cb, NULL, 1000, 0);
/* Start event loop */ /* Start event loop */
return uev_run(&ctx, 0); return uev_run(&ctx, 0);