A group is a continuous block of buffer descriptors. More...
#include <bdbuf.h>
Collaboration diagram for rtems_bdbuf_group:
Data Fields | |
| rtems_chain_node | link |
| Link the groups on a LRU list if they have no buffers in use. | |
| size_t | bds_per_group |
| The number of BD allocated to this group. | |
| uint32_t | users |
| How many users the block has. | |
| rtems_bdbuf_buffer * | bdbuf |
| First BD this block covers. | |
Detailed Description
A group is a continuous block of buffer descriptors.
A group covers the maximum configured buffer size and is the allocation size for the buffers to a specific buffer size. If you allocate a buffer to be a specific size, all buffers in the group, if there are more than 1 will also be that size. The number of buffers in a group is a multiple of 2, ie 1, 2, 4, 8, etc.
Field Documentation
First BD this block covers.
The number of BD allocated to this group.
This value must be a multiple of 2.
Link the groups on a LRU list if they have no buffers in use.
| uint32_t rtems_bdbuf_group::users |
How many users the block has.
The documentation for this struct was generated from the following file:
- rtems/bdbuf.h
