diff options
Diffstat (limited to 'include/osmocom/core/write_queue.h')
-rw-r--r-- | include/osmocom/core/write_queue.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/osmocom/core/write_queue.h b/include/osmocom/core/write_queue.h index 41748d72..373b64ff 100644 --- a/include/osmocom/core/write_queue.h +++ b/include/osmocom/core/write_queue.h @@ -23,24 +23,59 @@ #ifndef OSMO_WQUEUE_H #define OSMO_WQUEUE_H +/*! \file write_queue.h + * \brief Osmocom write queues + */ + #include <osmocom/core/select.h> #include <osmocom/core/msgb.h> +/*! write queue instance */ struct osmo_wqueue { + /*! \brief osmocom file descriptor */ struct osmo_fd bfd; + /*! \brief maximum length of write queue */ unsigned int max_length; + /*! \brief current length of write queue */ unsigned int current_length; + /*! \brief actual linked list implementing the queue */ struct llist_head msg_queue; + /*! \brief call-back in case qeueue is readable */ int (*read_cb)(struct osmo_fd *fd); + /*! \brief call-back in case qeueue is writable */ int (*write_cb)(struct osmo_fd *fd, struct msgb *msg); + /*! \brief call-back in case qeueue has exceptions */ int (*except_cb)(struct osmo_fd *fd); }; +/*! \brief Initialize a \ref osmo_wqueue structure + * \param[in] queue Write queue to operate on + * \param[in] max_length Maximum length of write queue + */ void osmo_wqueue_init(struct osmo_wqueue *queue, int max_length); + +/*! \brief Clear a \ref osmo_wqueue + * \param[in] queue Write queue to be cleared + * + * This function will clear (remove/release) all messages in it. + */ void osmo_wqueue_clear(struct osmo_wqueue *queue); + +/*! \brief Enqueue a new \ref msgb into a write queue + * \param[in] queue Write queue to be used + * \param[in] data to-be-enqueued message buffer + */ int osmo_wqueue_enqueue(struct osmo_wqueue *queue, struct msgb *data); + +/*! \brief Select loop function for write queue handling + * \param[in] fd osmocom file descriptor + * \param[in] what bit-mask of events that have happened + * + * This function is provided so that it can be registered with the + * select loop abstraction code (\ref osmo_fd::cb). + */ int osmo_wqueue_bfd_cb(struct osmo_fd *fd, unsigned int what); #endif |