Function ThreadFlagsCheck

source/rtos2/RTX/Source/rtx_thread.c:96–134

Check Thread Flags. \param[in] thread thread object. \param[in] flags specifies the flags to check. \param[in] options specifies flags options (osFlagsXxxx). \return thread flags before clearing or 0 if specified flags have not been set.

/// \param[in]  options         specifies flags options (osFlagsXxxx).
/// \return thread flags before clearing or 0 if specified flags have not been set.
static uint32_t ThreadFlagsCheck (os_thread_t *thread, uint32_t flags, uint32_t options) {
#if (EXCLUSIVE_ACCESS == 0)
  uint32_t primask;
#endif
  uint32_t thread_flags;

  if ((options & osFlagsNoClear) == 0U) {
#if (EXCLUSIVE_ACCESS == 0)
    primask = __get_PRIMASK();
    __disable_irq();

    thread_flags = thread->thread_flags;
    if ((((options & osFlagsWaitAll) != 0U) && ((thread_flags & flags) != flags)) ||
        (((options & osFlagsWaitAll) == 0U) && ((thread_flags & flags) == 0U))) {
      thread_flags = 0U;
    } else {
      thread->thread_flags &= ~flags;
    }

    if (primask == 0U) {
      __enable_irq();
    }
#else
    if ((options & osFlagsWaitAll) != 0U) {
      thread_flags = atomic_chk32_all(&thread->thread_flags, flags);
    } else {
      thread_flags = atomic_chk32_any(&thread->thread_flags, flags);
    }
#endif
  } else {
    thread_flags = thread->thread_flags;
    if ((((options & osFlagsWaitAll) != 0U) && ((thread_flags & flags) != flags)) ||
        (((options & osFlagsWaitAll) == 0U) && ((thread_flags & flags) == 0U))) {
      thread_flags = 0U;
    }
  }

  return thread_flags;
}


//  ==== Library functions ====