PowerStatus: improved API, minor fixes.

* ioctl() does not return a status_t; fixed its usage.
* Do not overwrite the cached battery info with bogus data (this is
quite strict, though).
* Improved DriverInterface API with a more "natural" argument order.
* Simplified some code.

kernel: atomic_*() functions rework

* No need for the atomically changed variables to be declared as
volatile.
* Drop support for atomically getting and setting unaligned data.
* Introduce atomic_get_and_set[64]() which works the same as
atomic_set[64]() used to. atomic_set[64]() does not return the
previous value anymore.

* Removed the obsolescent [B]Reference[able] API and replaced the remaining
uses. Fixes the gcc 2 acpi build.
* Renamed WeakReferenceable::{Add,Remove}Reference() to
{Acquire,Release}Reference() for consistency.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39871 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The device watcher now waits on a semaphore, and doesn't use snooze() anymore.
* This has the advantage that we can quit PowerStatus instantly, instead of
having to wait for two seconds in the worst case.
* Automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32257 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Improved the disabled look (in case there is no battery -- apparently, the
ACPI interface needs some more work, as it currently uses
BATTERY_CRITICAL_STATE to report that there is no battery...).
* Cleanup of many more of Clemens' coding style violations...


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32256 a95241bf-73f2-0310-859d-f6bbb57e9c96

Aside from I locked the wrong (base) class. The problem was more that the driver interface was deleted to early.
Using a Referenceable seems to fix it now.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31992 a95241bf-73f2-0310-859d-f6bbb57e9c96

The monitor watcher list was not locked when broadcast a message.
Probably it caused #4151



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31982 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add a ACPI battery driver interface to the PowerStatus app. If there is anyone with a working APM please test if its still working!
TODO:
- Get along with the Layout engine, the extended info window looks "no very nice".
- Reading the battery status takes too long so put it into a thread or cache it.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31484 a95241bf-73f2-0310-859d-f6bbb57e9c96

PowerStatus: improved API, minor fixes.

* ioctl() does not return a status_t; fixed its usage.
* Do not overwrite the cached battery info with bogus data (this is
quite strict, though).
* Improved DriverInterface API with a more "natural" argument order.
* Simplified some code.

kernel: atomic_*() functions rework

* No need for the atomically changed variables to be declared as
volatile.
* Drop support for atomically getting and setting unaligned data.
* Introduce atomic_get_and_set[64]() which works the same as
atomic_set[64]() used to. atomic_set[64]() does not return the
previous value anymore.

* Removed the obsolescent [B]Reference[able] API and replaced the remaining
uses. Fixes the gcc 2 acpi build.
* Renamed WeakReferenceable::{Add,Remove}Reference() to
{Acquire,Release}Reference() for consistency.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39871 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The device watcher now waits on a semaphore, and doesn't use snooze() anymore.
* This has the advantage that we can quit PowerStatus instantly, instead of
having to wait for two seconds in the worst case.
* Automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32257 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Improved the disabled look (in case there is no battery -- apparently, the
ACPI interface needs some more work, as it currently uses
BATTERY_CRITICAL_STATE to report that there is no battery...).
* Cleanup of many more of Clemens' coding style violations...


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32256 a95241bf-73f2-0310-859d-f6bbb57e9c96

Aside from I locked the wrong (base) class. The problem was more that the driver interface was deleted to early.
Using a Referenceable seems to fix it now.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31992 a95241bf-73f2-0310-859d-f6bbb57e9c96

The monitor watcher list was not locked when broadcast a message.
Probably it caused #4151



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31982 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add a ACPI battery driver interface to the PowerStatus app. If there is anyone with a working APM please test if its still working!
TODO:
- Get along with the Layout engine, the extended info window looks "no very nice".
- Reading the battery status takes too long so put it into a thread or cache it.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31484 a95241bf-73f2-0310-859d-f6bbb57e9c96