rockbox/firmware/kernel.c, branch working

kernel: Break out kernel primitives into separate files and move to separate dir.

2014-03-03T17:11:57+00:00

No code changed, just shuffling stuff around. This should make it easier to
build only select parts kernel and use different implementations.

Change-Id: Ie1f00f93008833ce38419d760afd70062c5e22b5

kernel: Allow queue_wait_w_tmo() to be called with TIMEOUT_BLOCK.

2012-09-28T17:40:17+00:00

Previously TIMEOUT_BLOCK would be handled the same as TIMEOUT_NOBLOCK, i.e.
poll only without thread switch, which is rather unexpected from *_w_tmo()
functions. No current code doesn't call it that way yet.

Change-Id: I370ce0f752681122d197eadeee9ab17112647c20

AS3525v1/2: Enable nested handling of interrupts

2012-01-08T22:29:25+00:00

Mostly for the sake of reducing latency for audio servicing where other service
routines can take a long time to complete, leading to occasional drops of a
few samples, especially in recording, where they are fairly frequent.

One mystery that remains is GPIOA IRQ being interrupted causes strange
undefined instruction exceptions, most easily produced on my Fuze V2 with a
scrollwheel. Making GPIOA the top ISR for now, thus not interruptible, cures it.

SVC mode is used during the actual calls. Hopefully the SVC stack size is
sufficient. Prologue and epilogue code only uses the IRQ stack and is large
enough.

Any routine code that should not be interrupted should disable IRQ itself from
here on in.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31642 a1c6a512-1295-4272-9138-f99709370657

Add comments source comments about the behavior of yield and sleep.

2011-12-15T19:57:08+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31288 a1c6a512-1295-4272-9138-f99709370657

Fix "variable 'result' set but not used" warning

2011-07-19T21:06:30+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30172 a1c6a512-1295-4272-9138-f99709370657

Commit FS#12069 - Playback rework - first stages. Gives as thorough as possible a treatment of codec management, track change and metadata logic as possible while maintaining fairly narrow focus and not rewriting everything all at once. Please see the rockbox-dev mail archive on 2011-04-25 (Playback engine rework) for a more thorough manifest of what was addressed. Plugins and codecs become incompatible.

2011-04-27T03:08:23+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29785 a1c6a512-1295-4272-9138-f99709370657

No need to save irq again after thread wakeup in queue_wait(_w_tmo), just disable it.

2011-03-17T03:35:44+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29608 a1c6a512-1295-4272-9138-f99709370657

Change the thread api a bit.

2011-03-05T17:48:06+00:00

* Remove THREAD_ID_CURRENT macro in favor of a thread_self() function, this allows thread functions to be simpler.
* thread_self_entry() shortcut for kernel.c.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29521 a1c6a512-1295-4272-9138-f99709370657

Merge functionality of wakeups and semaphores-- fewer APIs and object types. semaphore_wait takes a timeout now so codecs and plugins have to be made incompatible. Don't make semaphores for targets not using them.

2011-03-02T08:49:38+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29492 a1c6a512-1295-4272-9138-f99709370657

Cleanup preprocessor around corelock usage and move its definition outside #ifdef ASSEMBLER_THREADS

2011-02-19T00:09:08+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29330 a1c6a512-1295-4272-9138-f99709370657