It is now safe to introduce the callback since nano_timer_init now
calls _nano_timeout_init which does takes care of initializing all
the fields properly.
Change-Id: I5735eeebef233a0a541ec8b2a354b65da98082fc
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
With the introduction of _nano_timeout_init it prefered to call it
to initialize the _nano_timeout fields properly.
Change-Id: I83e9c63f9bb2903c508264d1199d2c687c330ec8
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Add a way of finding if a microkernel task is the idle task instead of
of duplicating:
task_priority_get() == (CONFIG_NUM_TASK_PRIORITIES - 1)
which could be subject to change.
Only available for microkernel, since there is no such concept in the
nanokernel.
Change-Id: Ie8930981f1a2ac5ff16f905f4eb4e333c8b59c5d
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Adds the nanokernel infrastructure to permit microkernel tasks
to block/unblock on nanokernel objects. Multiple tasks may wait
on a nanokernel object's dedicated task wait queue.
It is important to note that when data is posted to the object
all the tasks on that object's dedicated task wait queue may be
woken up but the data is not immediately given to any of the tasks.
This is done to maintain consistent behavior with the nanokernel
as in a nanokernel system, fibers are given preference in both
waiting on and getting data from a nanokernel object.
Change-Id: Ia5c7f21ae59a367d9fec23dafc3a918d9e767db5
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Restructure the kernel's object tracing implementation
to provide a public API that allows debug tools to use
the debug hooks easier and allows kernel developers
to extend the kernel's object tracing scope and include
new kernel objects easier.
The API provides the trace list abstraction to keep track
of different types of kernel objects. The API contains
a simple single-linked list implementation that allows
to save space and simplifies the access to the data for
debug tools such as gdb.
Change-Id: Ic4d393d584576f67f2c5b706e61bae08869debba
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@intel.com>
Moving comments back to the 70 character limit. Also moving some of the
comments up to be included in the doxygen headers instead of inline.
Change-Id: I56a6015e5fd6da81e9a06701217e62e899b6aa62
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Simplifies the nanokernel timer API so that the timeout parameter must be
specified when invoking nano_isr_timer_test(), nano_fiber_timer_test(),
nano_task_timer_test() and nano_timer_test().
This obsoletes the following APIs:
nano_fiber_timer_wait()
nano_task_timer_wait()
nano_timer_wait()
Note that even the though the new API requires that the timeout parameter
be specified, there are currentl only two acceptable values:
TICKS_NONE and TICKS_UNLIMITED
Theoretically, the current implementation would allow one to supply a
finite positive value for the timeout and the system would wait up to
that many ticks for the timer to expire. However, it is thought that
that unnecessarily complicates the nanokernel timer model and so it is
left as an unsupported option. Should that change, then that feature
could be enabled by updating the documentation.
Change-Id: I8835c5342ab5025d6f70fdfbed54a50add7568d7
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Changes the nanokernel LIFO API so that the timeout parameter must be
specified when invoking nano_isr_lifo_get(), nano_fiber_lifo_get(),
nano_task_lifo_get() and nano_lifo_get().
This obsoletes the following APIs:
nano_fiber_lifo_get_wait()
nano_fiber_lifo_get_wait_timeout()
nano_task_lifo_get_wait()
nano_task_lifo_get_wait_timeout()
nano_lifo_get_wait()
nano_lifo_get_wait_timeout()
Change-Id: Ie9f93e46da42ea33c32544c02ab1d70b893cc198
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Change-Id: Ib3f69be9f9273e57952a3ebceebc82d84c607c64
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Change-Id: I6da43e41f9c6efee577b70513ec368ae3cce0144
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Add a list for each kind of nanokernel object. And link the object
to the list on the initialization function.
Change-Id: I7a51902a8d1b306ec50d9486e55af286127fcb1a
Signed-off-by: Yonattan Louise <yonattan.a.louise.mendoza@intel.com>
Change all the Intel and Wind River code license from BSD-3 to Apache 2.
Change-Id: Id8be2c1c161a06ea8a0b9f38e17660e11dbb384b
Signed-off-by: Javier B Perez Hernandez <javier.b.perez.hernandez@linux.intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Doxegenize and cleanup headers for nanokernel
- fibers
- context
- timers
- stacks
Also minor cleanup of x86/arch.h
Change-Id: Ib65568d4ec034b69e8a6214ba4b52a7f719300bb
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
The term 'context' is vague and overloaded. Its usage for 'an execution
context' is now referred as such, in both comments and some APIs' names.
When the execution context can only be a fiber or a task (i.e. not an
ISR), it is referred to as a 'thread', again in comments and everywhere
in the code.
APIs that had their names changed:
- nano_context_id_t is now nano_thread_id_t
- context_self_get() is now sys_thread_self_get()
- context_type_get() is now sys_execution_context_type_get()
- context_custom_data_set/get() are now
sys_thread_custom_data_set/get()
The 'context' prefix namespace does not have to be reserved by the
kernel anymore.
The Context Control Structure (CCS) data structure is now the Thread
Control Structure (TCS):
- struct ccs is now struct tcs
- tCCS is now tTCS
Change-Id: I7526a76c5b01e7c86333078e2d2e77c9feef5364
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Standardize on using the irq_lock/irq_unlock (non-inline) symbols
everywhere.
The non-inline versions provide absolutely no benefits, so they will be
removed in a subsequent commit, and the inline versions will have their
_inline suffix removed.
Change-Id: Ib0b55f450447366468723e065a60adbadf7067a9
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Remove function name from comment and add @brief instead.
Also capitilize first letter.
Change-Id: Ib708b49bf02e5bc89b0066637a55874e659637e0
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Previous comment style used RETRURNS:, use @return to comply
with javadoc style.
Change-Id: Ib1dffd92da1d97d60063ec5309b08049828f6661
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
The change replaces multiple asterisks to ** at
the beginning of comments and adds a space before
the asterisks at the beginning of lines.
Change-Id: I7656bde3bf4d9a31e38941e43b580520432dabc1
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
The new name better reflects that this file contains all private
nanokernel APIs that are used by various kernel subsystems.
Change-Id: I4c258d582e93753eec9e575fdb5f9f2109417a0f
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
The nanokernel time tracking code (ticker) can now exist in microkernel
systems. This allows the ticker that drives nano timers and timeouts to
advance the tick count for these in a microkernel, thus allow their
presence there. Previously, nano timers could not be used in a
microkernel.
Change-Id: I17f2b659691a081b0f9bf3961ed030533aa02a15
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
The system clock code only references it, it should not own it.
Change-Id: I38eb61599eb66458d5a3c3c9713cf11dc14e8a63
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
The nanokernel LIFOs could only have one fiber pending on one of
them concurrently. If a second fiber wanted to take a contested
LIFO, if would kick the pending fiber out of the wait 'container',
but would not put it in back in the ready queue with an error. Instead,
it would, for all intents and purposes, remove it from the scheduling
mechanism of the nanokernel: the fiber would be 'lost' at that point.
The nanokernel LIFOs now make use of the fiber pend queue, and thus
allow multiple fibers to pend concurrently.
sysgen is updated since the microkernel initializes statically two
LIFOs, one for the command packets and one for the timer packets, and
the LIFO data structure has changed.
The nano_timers use the LIFOs and look at their internals, so they are
updated as well.
Change-Id: I250a610fcdee9d32172c88d38e6c3cfd5b437d15
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Moves all files in this sub-directory up one level, to the main
nanokernel source directory, then deletes the sub-directory itself.
This change means that all nanokernel source files (with the
excecption of its include files) are now in the main nanokernel
source directory, which is a more intuitive arrangement.
Change-Id: I6bd4b1bb6fdd9be13d57b320947f520a5bc73914
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
