dceの異常とhandle SIGUSR 1 nostop

  StackTrampoline ()
  {
    int status = 0;
    status = pthread_mutex_lock (&g_mutex);
    g_current = this;
    NS_ASSERT_MSG (status == 0, "lock failed");
    m_stack = malloc (SIGSTKSZ);
    stack_t newstack;
    stack_t oldstack;
    newstack.ss_sp = m_stack;
    newstack.ss_size = SIGSTKSZ;
    newstack.ss_flags = 0;
    m_vgId = VALGRIND_STACK_REGISTER (m_stack,((unsigned long)m_stack) + SIGSTKSZ);
    status = sigaltstack (&newstack, &oldstack);
    NS_ASSERT_MSG (status == 0, "first sigaltstack failed stack=" << m_stack <<
                   " stacksize=" << SIGSTKSZ);
    struct sigaction newact;
    struct sigaction oldact;
    newact.sa_handler = &StackTrampoline::SignalHandler;
    newact.sa_flags = SA_ONSTACK | SA_RESETHAND;
    sigemptyset (&newact.sa_mask);
    status = sigaction (SIGUSR1, &newact, &oldact);
    NS_ASSERT_MSG (status == 0, "first sigaction failed");
<span style="color:#FF6666;">    status = raise (SIGUSR1);</span>
    NS_ASSERT_MSG (status == 0, "raise failed");
    status = sigaltstack (&oldstack, 0);
    NS_ASSERT_MSG (status == 0, "second sigaltstack failed");
    g_current = 0;
    status = pthread_mutex_unlock (&g_mutex);
    NS_ASSERT_MSG (status == 0, "unlock failed");
  }