Commit Graph

4 Commits

Author SHA1 Message Date
Fabio Baltieri def230187b test: fix more legacy #include paths
Add a bunch of missing "zephyr/" prefixes to #include statements in
various test and test framework files.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
2022-08-02 16:41:41 +01:00
Yuval Peress ffc0983547 test: unittest: Fix deprecated ZephyrUnittest
Fix the deprecated calls to loading ZephyrUnittest by replacing them
with `Zephyr COMPONENTS unittest`.

Signed-off-by: Yuval Peress <peress@google.com>
2022-06-29 06:04:32 -04:00
Gerard Marull-Paretas ade7ccb918 tests: migrate includes to <zephyr/...>
In order to bring consistency in-tree, migrate all tests to the new
prefix <zephyr/...>. Note that the conversion has been scripted, refer
to #45388 for more details.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-05-06 20:02:14 +02:00
Andy Ross 528bef2d22 lib/os: Add sys_winstream lockless shared memory byte stream IPC
It's not uncommon to have Zephyr running in environments where it
shares a memory bus with a foreign/non-Zephyr system (both the older
Intel Quark and cAVS audio DSP systems share this property).  In those
circumstances, it would be nice to have a utility that allows an
arbitrary-sized chunk of that memory to be used as a unidirectional
buffered byte stream without requiring complicated driver support.
sys_winstream is one such abstraction.

This code is lockless, it makes no synchronization demands of the OS
or hardware beyond memory ordering[1].  It implements a simple
file/socket-style read/write API.  It produces small code and is high
performance (e.g. a read or write on Xtensa is about 60 cycles plus
one per byte copied).  It's bidirectional, with no internal Zephyr
dependencies (allowing it to be easily ported to the foreign system).
And it's quite a bit simpler (especially for the reader) than the
older cAVS trace protocol it's designed to replace.

[1] Which means that right now it won't work reliably on arm64 until
we add a memory barrier framework to Zephyr!  See notes in the code;
the locations for the barriers are present, but there's no utility to
call.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2022-01-13 14:01:23 -05:00