respective Private* base class.
* Changed sigwait() and sigsuspend() to use thread_block() instead of a
condition variable.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25100 a95241bf-73f2-0310-859d-f6bbb57e9c96
thread_block(), thread_unblock(),...) that allow a thread to wait for
something without needing a semaphore or condition variable. It can
simply block and another thread can unblock it. Supports timeouts and
interrupting. Both semaphores and condition variables use this
common mechanism, now.
* Semaphores:
- Some simplifications due to the thread blocking mechanism.
- Changed locking order to sem -> thread. It was the other way around
before and when introducing the wait_for_objects() support I had
also introduced a situation where the locking was reverse, which
could potentially cause a dead lock on SMP systems.
- Instead of queueing thread structures, a semaphore queues
queued_thread entries now, which are created on the stack. The
thread::sem structure could thus be removed.
- Added sem_entry::net_count, which is sem_entry::count plus the
acquisition count of all waiting threads. This number is needed in
remove_thread_from_sem() and instead of computing it there we
maintain it.
- Fixed remove_thread_from_sem(). It would not unblock threads, if
the sem count was <= 0.
- Made sem::last_acquirer unconditional. It is actually needed for
sem_info::latest_holder. Fixed fill_sem_info() accordingly.
- Added some optional tracing output, though only via ktrace_printf().
* Condition variables:
- Could be simplified significantly through the use of the thread
blocking mechanism. Removed a good deal of unnecessary code.
- Moved the ConditionVariableEntry "flags" parameter from Wait() to
Add(), and adjusted all places where condition variables are used
accordingly.
* snooze() uses thread_block_with_timeout() instead of a semaphore.
* Simplified thread interrupting in the signal and user debugger code.
Instead of separate functions for threads waiting on a semaphore or
condititon variable, we only have a single thread_interrupt(), now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25099 a95241bf-73f2-0310-859d-f6bbb57e9c96
- If the hook of the timer we're cancelling is currently being
executed, we do now wait till it is finished. This is how the BeBook
specifies the function to behave.
- Periodic timers would not be cancelled, if their hook was being
invoked at the same time, since they weren't in the queue during
that time.
- Since we know the CPU on which the timer is scheduled (timer::cpu),
we don't have to look through any other CPU queue to find it.
- Fixed the return value. It should report whether the timer had
already fired, and was not always doing that.
* Added private add_timer() flag B_TIMER_ACQUIRE_THREAD_LOCK. It causes
the thread spinlock to be acquired before the event hook is called.
cancel_timer() doesn't wait for timers with the flag set. Instead we
check in the timer interrupt function after acquiring the thread
spinlock whether the timer was cancelled in the meantime. Calling
cancel_timer() with the thread spinlock being held does thus avoid any
race conditions and won't deadlock, if the event hook needs to acquire
the thread spinlock, too. This feature proves handy for some kernel
internal needs.
* The scheduler uses a B_TIMER_ACQUIRE_THREAD_LOCK timer now and
cancel_timer() instead of the no longer needed
_local_timer_cancel_event().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25098 a95241bf-73f2-0310-859d-f6bbb57e9c96
box, added a new method _LegendColorFrameAt() that returns that area, and
is also used when drawing it.
* Fixed changing the history background color; it accidently changed the color
of the wrong view. This fixes bug #2115.
* If the history gets too dark, it will now lighten up the scale, instead of
drawing it even darker.
* Changing the color of a data source now immediately redraws the colored box,
too.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25097 a95241bf-73f2-0310-859d-f6bbb57e9c96
setting to force BLockers to be semaphore style. This may help with
debugging deadlocks.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25096 a95241bf-73f2-0310-859d-f6bbb57e9c96
but also prints post syscall entries not matching the filter, if the
respective pre syscall entry matched. This way one also sees the syscall
return values. Works only in forward direction ATM.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25095 a95241bf-73f2-0310-859d-f6bbb57e9c96
kernel and added a WrapperTraceFilter* parameter, which allows for
additional filtering. This way other commands can print tracing output
with special filtering.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25094 a95241bf-73f2-0310-859d-f6bbb57e9c96
keyword, so this stupid python should really be fixed instead.
* Enforced the 80 column limit.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25090 a95241bf-73f2-0310-859d-f6bbb57e9c96
Moved global variables on the stack.
Hide cursor while menu is displayed.
Print error message at correct location.
Reboot on error.
Display "Loading <name>".
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25089 a95241bf-73f2-0310-859d-f6bbb57e9c96
this fixes bug #1762 (Installer: trying to close it via alt+q shows warning twice)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25084 a95241bf-73f2-0310-859d-f6bbb57e9c96
- add a DesktopWindow that can show replicants. To edit the shelf run Login --edit.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25083 a95241bf-73f2-0310-859d-f6bbb57e9c96
variable at once. It wasn't used anymore, and the code gets simpler.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25080 a95241bf-73f2-0310-859d-f6bbb57e9c96
ones) for wait_for_child(), which is notified when any job control
condition (child dead, stopped, continued) occurs. These events are
relatively rare anyway, and it simplifies the code.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25079 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Implemented temporary work-around for net_buffer append_cloned(),
which doesn't seem to work right in combination with remove_header().
Or maybe I'm just misunderstood how it is supposed to be used. Anyway,
this fixed invalid data in the stream when buffers were split by a
read.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25070 a95241bf-73f2-0310-859d-f6bbb57e9c96
- added ok, halt and reboot buttons
- added "hide password" checkbox
- shake the window on error (good idea axel :p)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25064 a95241bf-73f2-0310-859d-f6bbb57e9c96
thought I had done.
Of course, that wouldn't have happened if Ingo didn't break the network boot
with his netstack changes ;-)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25058 a95241bf-73f2-0310-859d-f6bbb57e9c96
value range propagation optimization results in broken code with the GCC4
version we are currently using. Added TODO to retest/remove this flag when we
update our GCC4 compiler.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25054 a95241bf-73f2-0310-859d-f6bbb57e9c96
Ingo Weinhold