Commit Graph

4 Commits

Author SHA1 Message Date
Andrew Boie f18f102feb nanokernel: add optional ring buffer data type
This patch is based on some code contributed by Dirk Brandewie.

This is a generic data structure for queuing data in a FIFO ring
buffer. Any given data enqueued is annotated with an app-specific
type identifier, and small integral value. Use of a data pointer
is optional if the necessary information can be conveyed in the
annotations. We want all the metadata to fit in a single DWORD.
The ring buffer always contains at least one free dword in the
buffer to correctly distinguish between full and empty queues.

Concurrency control is almost nonexistent; depending on usage,
apps may want to introduce the usage of semaphores and/or mutexes
to preserve the integrity of the ring buffer or provide notifications
when data is available.

Change-Id: I860262d2afc96db4476d4c695a92f7da355ab732
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-02-05 20:15:34 -05:00
Allan Stephens 1d5ebda336 doc: Nanokernel stacks addition
Describes nanokernel stacks concepts, examples, and APIs.

Change-Id: I53aea9c4557953beaf5d0dd7b601446c7b8f3984
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
2016-02-05 20:15:20 -05:00
Allan Stephens 8fe4f41ce6 doc: Updates to nanokernel data passing services
Partitions services into a separate file for each service. Updates
API tables to incorporate missing APIs.

Change-Id: Ia08b52b4865967beda02851cfe4a7d5ca4e8f596
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
2016-02-05 20:15:20 -05:00
Rodrigo Caballero f81ee6efdd Doc: Change the Nanokernel Objects to the Nanokernel Services section.
Moves the Nanokernel Object documentation to a new Nanokernel Services
section within the Kernel Primer. Labels, cross-references, figures,
headings and filenames were updated to reflect the new structure. 

Change-Id: I04f97e712d78cd211a8ed1315f86895a51affa01
Signed-off-by: Rodrigo Caballero <rodrigo.caballero.abraham@intel.com>
2016-02-05 20:15:19 -05:00