To manage buffers we using buffer descriptors (BD). More...
#include <bdbuf.h>
Collaboration diagram for rtems_bdbuf_buffer:
Data Structures | |
| struct | rtems_bdbuf_avl_node |
Data Fields | |
| rtems_chain_node | link |
| Link the BD onto a number of lists. More... | |
| struct rtems_bdbuf_buffer::rtems_bdbuf_avl_node | avl |
| rtems_disk_device * | dd |
| disk device | |
| rtems_blkdev_bnum | block |
| block number on the device | |
| unsigned char * | buffer |
| Pointer to the buffer memory area. | |
| rtems_bdbuf_buf_state | state |
| State of the buffer. More... | |
| uint32_t | waiters |
| The number of threads waiting on this buffer. More... | |
| rtems_bdbuf_group * | group |
| Pointer to the group of BDs this BD is part of. More... | |
| uint32_t | hold_timer |
| Timer to indicate how long a buffer has been held in the cache modified. More... | |
| int | references |
| Allow reference counting by owner. More... | |
| void * | user |
| User data. More... | |
Detailed Description
To manage buffers we using buffer descriptors (BD).
A BD holds a buffer plus a range of other information related to managing the buffer in the cache. To speed-up buffer lookup descriptors are organized in AVL-Tree. The fields 'dd' and 'block' are search keys.
Field Documentation
◆ group
| rtems_bdbuf_group* rtems_bdbuf_buffer::group |
Pointer to the group of BDs this BD is part of.
◆ hold_timer
| uint32_t rtems_bdbuf_buffer::hold_timer |
Timer to indicate how long a buffer has been held in the cache modified.
◆ link
| rtems_chain_node rtems_bdbuf_buffer::link |
Link the BD onto a number of lists.
◆ references
| int rtems_bdbuf_buffer::references |
Allow reference counting by owner.
◆ state
| rtems_bdbuf_buf_state rtems_bdbuf_buffer::state |
State of the buffer.
◆ user
| void* rtems_bdbuf_buffer::user |
User data.
◆ waiters
| uint32_t rtems_bdbuf_buffer::waiters |
The number of threads waiting on this buffer.
The documentation for this struct was generated from the following file:
