diff options
Diffstat (limited to 'cpukit/score/inline/rtems/score/chain.inl')
| -rw-r--r-- | cpukit/score/inline/rtems/score/chain.inl | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/cpukit/score/inline/rtems/score/chain.inl b/cpukit/score/inline/rtems/score/chain.inl index ca60aa94f5..3bde7fb229 100644 --- a/cpukit/score/inline/rtems/score/chain.inl +++ b/cpukit/score/inline/rtems/score/chain.inl @@ -32,6 +32,36 @@ * @{ */ +/** @brief Set off chain + * + * This function sets the next and previous fields of the @a node to NULL + * indicating the @a node is not part of a chain. + * + * @param[in] node the node set to off chain. + */ +RTEMS_INLINE_ROUTINE void _Chain_Set_off_chain( + Chain_Node *node +) +{ + node->next = node->previous = NULL; +} + +/** @brief Is the Node off Chain + * + * This function returns true if the @a node is not on a chain. A @a node is + * off chain if the next and previous fields are set to NULL. + * + * @param[in] node is the node off chain. + * + * @return This function returns true if the @a node is off chain. + */ +RTEMS_INLINE_ROUTINE bool _Chain_Is_node_off_chain( + const Chain_Node *node +) +{ + return (node->next == NULL) && (node->previous == NULL); +} + /** @brief Are Two Nodes Equal * * This function returns true if @a left and @a right are equal, |