static void
check_reserved_signal_(const char *name, size_t name_len)
{
const char *prev = ATOMIC_PTR_EXCHANGE(received_signal, name);
if (prev) {
ssize_t RB_UNUSED_VAR(err);
#define NOZ(name, str) name[sizeof(str)-1] = str
static const char NOZ(msg1, " received in ");
static const char NOZ(msg2, " handler\n");
#ifdef HAVE_WRITEV
struct iovec iov[4];
iov[0].iov_base = (void *)name;
iov[0].iov_len = name_len;
iov[1].iov_base = (void *)msg1;
iov[1].iov_len = sizeof(msg1);
iov[2].iov_base = (void *)prev;
iov[2].iov_len = strlen(prev);
iov[3].iov_base = (void *)msg2;
iov[3].iov_len = sizeof(msg2);
err = writev(2, iov, 4);
#else
err = write(2, name, name_len);
err = write(2, msg1, sizeof(msg1));
err = write(2, prev, strlen(prev));
err = write(2, msg2, sizeof(msg2));
#endif
ruby_abort();
}
ruby_disable_gc = 1;
}
static RETSIGTYPE
sigsegv(int sig SIGINFO_ARG)
{
if (segv_received) {
ssize_t RB_UNUSED_VAR(err);
static const char msg[] = "SEGV received in SEGV handler\n";
err = write(2, msg, sizeof(msg));
ruby_abort();
}
CHECK_STACK_OVERFLOW();
segv_received = 1;
ruby_disable_gc = 1;
rb_bug_context(SIGINFO_CTX, "Segmentation fault" MESSAGE_FAULT_ADDRESS);
}
static RETSIGTYPE
sigsegv(int sig SIGINFO_ARG)
{
if (segv_received) {
ssize_t RB_UNUSED_VAR(err);
char msg[] = "SEGV received in SEGV handler\n";
err = write(2, msg, sizeof(msg));
ruby_abort();
}
CHECK_STACK_OVERFLOW();
segv_received = 1;
ruby_disable_gc_stress = 1;
rb_bug("Segmentation fault");
}