A thread that just missed a semaphore and put itself into the sems notify
queue could be enqueued into the run queue by release_sem_etc() of another
CPU before the CPU running the thread had a chance to reschedule it. Therefore
there is a timeframe where a thread can be running on one CPU and already be
in the run queue again. In this case no other CPU may schedule this thread
because then it would overwrite the threads' CPU pointer which kills the rest
of the scheduler logic, smp_get_current_cpu() and everything that depends on
that (like the kernel debugger). The more CPUs you have the easier this could
happen, up to the point where it was always triggered during boot on my quad
core system. The system would freeze and you could not enter the kernel
debugger, because two CPUs thought they were the same and disabled each other
through SMP communication. This makes booting my system stable and might fix
the occasional hang on boot for other SMP systems with only 2 CPUs/cores.
I've put a ToDo comment that details this above the workaround. Maybe we
should fix this in another way. Reviews, comments and suggestions welcome ;-)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23721 a95241bf-73f2-0310-859d-f6bbb57e9c96
DirectConnected() could be called twice with B_DIRECT_STOP when closing
the BDirectWindow.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23718 a95241bf-73f2-0310-859d-f6bbb57e9c96
move it to its own file, but it's not implemented yet... we'll see.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23717 a95241bf-73f2-0310-859d-f6bbb57e9c96
Notify the finisher thread after canceling transfers. It was possible that freeing the allocated
transfer resources would be delayed unnecessarily until some other transfer completed and woke up
the finisher thread. Found by Salvatore Benedetto, thanks!
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23714 a95241bf-73f2-0310-859d-f6bbb57e9c96
transfer resources would be delayed unnecessarily until some other transfer completed and woke up
the finisher thread. Found by Salvatore Benedetto, thanks!
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23713 a95241bf-73f2-0310-859d-f6bbb57e9c96
* set_gtt_entry() used the wrong index to fill the GTT - this could have never
worked correctly when you specified more memory than the amount of stolen
memory.
* Implementing maintaining resources for emulating overlay using the 3D engine
on i965. I don't yet commit the actual overlay code, as that is a) ugly, and
b) does not work yet.
* Moved AreaKeeper into its own header.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23709 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Our behaviour differs a bit from how BeOS handles those windows, added a
comment to the code which explains that, and how we could change it if we
really wanted to.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23705 a95241bf-73f2-0310-859d-f6bbb57e9c96
* renamed trasfer_data memeber top to first_descriptor
* added data_descriptor member to transfer_data (useful for control transfer)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23702 a95241bf-73f2-0310-859d-f6bbb57e9c96
so in the first place)
* Renamed local variable descriptor to current in the finisher thread
* Using next_done_descriptor instead of next_logical_descriptor, as the latest
is used to keep track of all descriptors that belongs to the transfer
* Added _UnlinkTransfer private method
* Implemented _FreeDescriptorChain
* Moved endpoint pointer from the ohci_general_td structur to the transfer_data_s
structure, ad the ohci_general_td has already a transfer_data_s pointer which can
be used to the endpoint pointer reducing ridundancy.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23701 a95241bf-73f2-0310-859d-f6bbb57e9c96
are not that useful, and the terminal doesn't like it anyway.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23700 a95241bf-73f2-0310-859d-f6bbb57e9c96
the command would overwrite its own output, not always on the bottom of the
screen.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23699 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added block_writer thread that continuously writes back blocks for all current
block caches.
* A block cache now maintains the number of dirty blocks if it doesn't use
transactions. That knowledge could also be used in block_cache_sync()...
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23698 a95241bf-73f2-0310-859d-f6bbb57e9c96
For commands with this flag set, the parser won't parse the
arguments provided (it will only check for matching parentheses and
brackets), but will pass the unparsed argument list string to the
command instead.
* Set the new flag for the "expr" command, so one doesn't have to quote
the expression to evaluate anymore (or put it in parentheses).
* Fixed tokenizing of quoted and unquoted strings in expression mode.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23697 a95241bf-73f2-0310-859d-f6bbb57e9c96
* This should speed up writing a transaction considerably.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23694 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Removed the public hash_grow() function again (at least for now, it's only
private).
* Removed the newSize argument from hash_grow(); it will compute the new size
automatically.
* The block cache is now using hash_insert_grow() instead of hash_insert()
which should make hash lookups much faster with some 10 thousand blocks,
also increased the initial table size from 32 to 1024...
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23692 a95241bf-73f2-0310-859d-f6bbb57e9c96
when the view is detached, fRenderer has already been released, and wouldn't
unlock the looper anymore in GLTeapot. This fixes bug #1626.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23691 a95241bf-73f2-0310-859d-f6bbb57e9c96
already using.
* We don't have to try posting _QUIT_ more than once, as it cannot block; the
looper is local, so direct message passing is used in this case.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23690 a95241bf-73f2-0310-859d-f6bbb57e9c96
printing the last 30 entries, it continues the last iteration, thus
making the more common use case more comfortable. The old functionality
is still available via "traced 0".
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23689 a95241bf-73f2-0310-859d-f6bbb57e9c96
views don't have a valid screen clipping yet. If then later we want
to invalidate the clipping of an entire hierarchie, the traversal stops
before reaching some of the child views, because the assumption was that
for any views with invalid screen clipping, their child views have invalid
screen clipping as well. Though this might cost a little performance, we
always invalidate the screen clipping of all child views, ignoring the
flag of the current view. Fixes ticket #1198 (garbled screen clipping of
E-Mail prefs and WonderBrush tool area when switching tabs).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23688 a95241bf-73f2-0310-859d-f6bbb57e9c96
kSyscallParametersInfos to kExtendedSyscallInfos) and added "name"
field. Now the classes for syscall kernel tracing don't need to lookup
the syscall function symbol anymore, which speeds up printing/filtering
of those entries dramatically.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23687 a95241bf-73f2-0310-859d-f6bbb57e9c96
is recorded in a kernel trace entry (if tracing is enabled).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23686 a95241bf-73f2-0310-859d-f6bbb57e9c96
volumes root directory when trying to unmount it. This fixes bug #1694.
Thanks to Ingo for investigating this! :-)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23685 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added "printteam" switch to "traced" command, enabling the printing of
the team ID.
* Added "team" filter to the "traced" command expression language.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23684 a95241bf-73f2-0310-859d-f6bbb57e9c96
comfortable number. Somewhat more complex "traced" filter expressions
tended to exceed the old limit easily.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23683 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Made the iterator static, so that it's possible to move from the
iteration position of the previous invocation to the current start,
instead of always having to start from the beginning or the end.
* Filtered backward iteration:
- Restrict the range to dump to the entries between the first and the
last filter match.
- Use new FILTER_MATCH entry flag to avoid applying the filter a
second time in the print loop.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23681 a95241bf-73f2-0310-859d-f6bbb57e9c96
- Changed Backgrounds preflet to account for the fixes in BColorControl
First commit :) Hi everybody!
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23680 a95241bf-73f2-0310-859d-f6bbb57e9c96
vm_cache_write_modified() here anymore since quite some time, it actually
doesn't make any sense to call the file system's "fsync" method here.
This should make syncing all file systems much faster when many vnodes are
in use.
* If a file system doesn't use the file cache, it can still just sync everything
it needs to in its "sync" method.
* Added a TODO item on how to improve sync speed further, if necessary.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23679 a95241bf-73f2-0310-859d-f6bbb57e9c96
write code aligned to what one has written in the comment (or the
other way around).
* Made trace_entry structure doubly linked, by introducing a
previous_size member. By using bit fields, shrinking the flags field
to 4 bits, and not saving the lower two bits of size and previous_size
(which are always 0 due to alignment), the structure remains 4 byte
sized and can still address the same entry size.
* kBufferSize is no longer one less than it could be.
* "traced" command:
- Use static variable for the iteration state rather then cluttering
the temporary debug variable name space.
- The <count> parameter can now be negative, in which case the entries
before (and including) <start> are printed.
- Added a new optional parameter, specifying the maximal number of
entries to be filtered. Filtered iteration is beautifully
comfortable now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23678 a95241bf-73f2-0310-859d-f6bbb57e9c96
command usage texts, which can be too long for kprintf().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23677 a95241bf-73f2-0310-859d-f6bbb57e9c96
