Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 1 | #ifndef _BSC_SELECT_H |
| 2 | #define _BSC_SELECT_H |
| 3 | |
Pablo Neira Ayuso | 8341934 | 2011-03-22 16:36:13 +0100 | [diff] [blame] | 4 | #include <osmocom/core/linuxlist.h> |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 5 | |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 6 | /*! \file select.h |
| 7 | * \brief select loop abstraction |
| 8 | */ |
| 9 | |
| 10 | /*! \brief Indicate interest in reading from the file descriptor */ |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 11 | #define BSC_FD_READ 0x0001 |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 12 | /*! \brief Indicate interest in writing to the file descriptor */ |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 13 | #define BSC_FD_WRITE 0x0002 |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 14 | /*! \brief Indicate interest in exceptions from the file descriptor */ |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 15 | #define BSC_FD_EXCEPT 0x0004 |
| 16 | |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 17 | /*! \brief Structure representing a file dsecriptor */ |
Pablo Neira Ayuso | f7f89d0 | 2011-05-07 12:42:40 +0200 | [diff] [blame] | 18 | struct osmo_fd { |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 19 | /*! linked list for internal management */ |
| 20 | struct llist_head list; |
| 21 | /*! actual operating-system level file decriptor */ |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 22 | int fd; |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 23 | /*! bit-mask or of \ref BSC_FD_READ, \ref BSC_FD_WRITE and/or |
| 24 | * \ref BSC_FD_EXCEPT */ |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 25 | unsigned int when; |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 26 | /*! call-back function to be called once file descriptor becomes |
| 27 | * available */ |
Pablo Neira Ayuso | f7f89d0 | 2011-05-07 12:42:40 +0200 | [diff] [blame] | 28 | int (*cb)(struct osmo_fd *fd, unsigned int what); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 29 | /*! data pointer passed through to call-back function */ |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 30 | void *data; |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 31 | /*! private number, extending \a data */ |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 32 | unsigned int priv_nr; |
| 33 | }; |
| 34 | |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 35 | /*! \brief Register a new file descriptor with select loop abstraction |
| 36 | * \param[in] fd osmocom file descriptor to be registered |
| 37 | */ |
Pablo Neira Ayuso | f7f89d0 | 2011-05-07 12:42:40 +0200 | [diff] [blame] | 38 | int osmo_fd_register(struct osmo_fd *fd); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 39 | |
| 40 | /*! \brief Unregister a file descriptor from select loop abstraction |
| 41 | * \param[in] fd osmocom file descriptor to be unregistered |
| 42 | */ |
Pablo Neira Ayuso | f7f89d0 | 2011-05-07 12:42:40 +0200 | [diff] [blame] | 43 | void osmo_fd_unregister(struct osmo_fd *fd); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 44 | |
| 45 | /*! \brief select main loop integration |
| 46 | * \param[in] polling should we pollonly (1) or block on select (0) |
| 47 | */ |
Pablo Neira Ayuso | f7f89d0 | 2011-05-07 12:42:40 +0200 | [diff] [blame] | 48 | int osmo_select_main(int polling); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 49 | |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 50 | #endif /* _BSC_SELECT_H */ |