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Class: Thread

Inherits:
Object show all
Defined in:
(unknown)

Instance Method Summary collapse

Instance Method Details

#cfp=(RubyVM) ⇒ Object

Returns the thread’s control frame.



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# File 'ext/internal/thread/thread.c', line 26

static VALUE thread_cfp(VALUE self)
{
  rb_thread_t * th;
  rb_control_frame_t * prev_cfp;

  GetThreadPtr(self, th);

  /* TODO: Not sure how many control frames back to go to get the one we
   * want */
  prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
  if((void *)(th->stack + th->stack_size) == (void *)prev_cfp)
  {
    return Qnil;
  }
  else
  {
    struct RubyInternalControlFrame * cfp;
    VALUE cfp_v;

    cfp_v = Data_Make_Struct(
        rb_cVmControlFrame,
        struct RubyInternalControlFrame,
        mark_ruby_internal_control_frame,
        free, 
        cfp);

    cfp->control_frame = prev_cfp;
    cfp->thread = self;

    return cfp_v;
  }
}