Various misc changes to convert bitbake to python3 which don't warrant
separation into separate commits.
(Bitbake rev: d0f904d407f57998419bd9c305ce53e5eaa36b24)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Currently if the server dies, its possible that log messages are never
displayed which is particularly problematic if one of those messages
is the exception and backtrace the server died with.
Rather than having the event queue exit as soon as the server disappears,
we should pop events from the queue until its empty before exiting.
This patch tweaks that code so that even if the server is dead and we're
going to exit, we return any events left in the pipe. This makes
debugging certain failures much easier.
(Bitbake rev: 29f6ade68fb2b506a23a7eb3a00cdcffa291b362)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Currently xmlrpc server implicitly sets itself into single use mode
when bitbake server is started with anonymous port (0) or no port is
provided in command line. In this mode bitbake shuts down xmlrpc server
after build is done. This assumption is incorrect in some cases.
For example Toaster uses bitbake in this mode and expects xmlrpc server
to stay in memory.
Till recent changes single use mode was always unset due to the bug.
When the bug was fixed it broke toaster builds as Toaster couldn't
communicate with bitbake server in single use mode.
Reimplemented logic of setting single use mode. The mode is explicity
set when --server-only command line parameter is not provided to bitbake.
It doesn't depend on the port number anymore.
[YOCTO #9275]
[YOCTO #9240]
[YOCTO #9252]
(Bitbake rev: afc0dd5c532684f6201b1e12bbf4c226ea19062d)
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Elliot Smith <elliot.smith@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Instead of trying one time with a timeout of 20 seconds try 4 times with
a timeout of 5 seconds, to account for a slow server start.
(Bitbake rev: 4a7fe63126dd8177baa5ad21e59e0bebeea8c596)
Signed-off-by: Lucas Dutra Nunes <ldnunes@ossystems.com.br>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This means that when you view the process tree, the processes
have meaningful names, aiding debugging:
$ pstree -p 30021
bash(30021)───KnottyUI(115579)───Cooker(115590)─┬─PRServ(115592)───{PRServ Handler}(115593)
├─Worker(115630)───bash:sleep(115631)───run.do_sleep.11(115633)───sleep(115634)
└─{ProcessEQueue}(115591)
$ pstree -p 30021
bash(30021)───KnottyUI(117319)───Cooker(117330)─┬─Cooker(117335)
├─PRServ(117332)───{PRServ Handler}(117333)
├─Parser-1:2(117336)
└─{ProcessEQueue}(117331)
Applies to parse threads, PR Server, cooker, the workers and execution
threads, working within the 16 character limit as best we can.
Needed to tweak the bitbake-worker magic values to tell the
workers apart.
(Bitbake rev: 539726a3b2202249a3f148d99e08909cb61902a5)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Currently if you send a SIGTERM to the bitbake UI process, the system basically
hangs if tasks are executing. This is because the server process doesn't
actually try any kind of shutdown before exiting.
This patch trys executing a stateForceShutdown command first, which is
enough to stop any active tasks before the system exits.
I also noticed that terminate can execute multiple times, once at SIGTERM
from the handler and once from the real exit. Double execution leads to
stack traces and potential hangs (writes to dead pipes), so ensure
the code only can run once.
With these fixes, bitbake much more correctly deals with SIGTERM to the
UI process.
(Bitbake rev: 1032ddddbe3241da02ebb3608a1c40f9123b9e80)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
If you start and suspend a bitbake execution so the bitbake lock is held,
then try and run "bitbake -w '' X", you will see bitbake return an error exit
code but print no message about what happened at all.
The reason is that the -w option creates a "UI" which swallows the messages. The
code which handles this exit failure mode thinks a UI has printed the messages
and therefore doesn't do so.
This adds in an extra parameter to the UI registration code so that we
can figure out whether its a primary UI or not and base decisions on whether
to display information on that instead. This fixes the error shown above and
some bizarre failures on the Yocto Project Autobuilder.
[YOCTO #8239]
(Bitbake rev: d1d60a68c2de40c2984d5040d14251c1be121b0b)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
With python you should not assign a list as the default value of a
function parameter - because a list is mutable, the result will be that
the first time a value is passed it will actually modify the default.
Reference:
http://docs.python-guide.org/en/latest/writing/gotchas/#mutable-default-arguments
(Bitbake rev: 7859f7388f2e3f675d0e1527cfde18625f36f637)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
If we see a BBHandledException in the idle handler, the understanding
is the system handled it, printing a log and traceback is just confusing.
Therefore only print these in the cases where its an unknown/unhandled
exception.
(Bitbake rev: d88ecc2bc44dce8fd92ca3a2c0fd4124a5e464fa)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
The recent inotify changes are causing a 100% cpu usage issue in the
idle handlers. To avoid this, we update the idle functions to optionally
report a float value which is the delay before the function needs to be
called again. 1 second is fine for the inotify handler, in reality its
more like 0.1s due to the default idle function sleep.
This reverts performance regressions of 1.5 minutes on a kernel build
and ~5-6 minutes on a image from scratch.
(Bitbake rev: 0e0ba408c2dce14a0fabd3fdf61d8465a031495b)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
There was a report that bitbake -e | less would use 100% cpu when it shouldn't
really. The issue appears to be a bogus file descriptor in the select call. We
shouldn't be blocking if there is event data pending to a *reader* from server
context.
[YOCTO #7138]
(Bitbake rev: 8f166e1a0f3574ae7d1e917a8bb403b87bad15bf)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Currently, if an exception occurs in an event handler, the server shuts
down but the UI simply hangs. This happens in two places, firstly waiting
for events and secondly, sending events to a server which no longer exists.
The latter does time out, the former does not. These patches improve
both code sections to check if the main server process is alive and if not,
trigger things to shut down gracefully. This avoids the timeout in the
command sending case too.
This resolves various cases where the UI would simply hang indefintely.
(Bitbake rev: ac418e1112ff5f9c3157569316902f7a27fba4b4)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Currently if an exception occurs, we just run the idle handler again and
again, usually looping indefintely. Chances are the exception that occurred
will keep occuring and this is not a good place to be.
This was breaking the autobuilders with gigabytes of logs.
At least improve things so the cooker shuts down gracefully when this happens.
Some trace of the original problem may still be present on the console too!
(Bitbake rev: 1f28d8d3311262427938180435b68f0a35c2b330)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
When idle functions finish, its likely we have some other work
to do, so don't sleep in the select call but instead, skip it.
This removes small amounts of latency in common commands.
(Bitbake rev: 069d6538f83b607cb46c6fe21bf6c596e8b99242)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
When the server exits, we no longer appear to need this delay. This
is likely due to improvements in the various exit codepaths. There
is therefore no longer any point in taking the latency hit.
(Bitbake rev: 8e75ee29ae07e13f23525c5c6045fbf6cdbe7675)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Its not possible to notice the change of status of an Event() in
the select call we sleep in. It would be possible in python 3.3 but
for now use a pipe instead. This removes small latency when bitbake
commands finish since the system doesn't sit in the select call.
(Debugging these kind of issues is apparent by setting a long sleep
for the select call)
(Bitbake rev: def28239b0f0d5f1cf13214b263114a5328538b7)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Currently a SIGTERM to the UI process causes the UI simply to lock up.
By setting an exit flag, the waitEvent can raise a SIGINT, allowing the
UI to break out the event loop and exit. Currently this is results in a
traceback but that is more desirable than a hanging process.
(Bitbake rev: 0d12041eceeae6bba2034b04913bb13abd67bd15)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
The use of a manager in the process server causes some issues since it remains
around for the lifetime of the server even though its only used during
initialisation and the system doesn't respond well to SIGTERM events
to the extra process (and two threads) the implementation involves.
Switching to a dedicated command simplifies the server process structure.
(Bitbake rev: 74532a7cf8ccea8b85f1cda5d5bc23d2f3c72a08)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Implementing feature set selection that allows a client
to enable specific features in the server at connection time.
Only enabling of features is supported, as there is
no way to safely remove data loaded into the cooker.
Once enabled, a feature will remain enabled for the
life of the cooker.
Client-server connection now supports specifying the feature
set required by the client. This is implemented in the Process
server using a managed proxy list, so the server cooker
will now load dynamically needed features based on what client
connects to it.
In the XMLRPC server the feature set is requested by
using a parameter for registerUIHandler function.
This allows observer-only clients to also specify features
for the server.
The server code configuration now is completly separated
from the client code. All hardcoding of client knowledge is
removed from the server.
The extra_caches is removed as the client can now specify
the caches it needs using the feature. The UI modules
now need to specify the desired featureSet. HOB is modified
to conform to the featureSet specification.
The only feature available is CookerFeatures.HOB_EXTRA_CACHES
which forces loading the bb.cache_extra:HobRecipeInfo class.
(Bitbake rev: 98e594837aab89ea042cfa9f3740d20a661b14e2)
Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
The shutdown state causes the server to finish what its doing, stop was
them meant to completely stop it. It doesn't mean the server is stopped
though. Renaming the current stop event for forceshutdown gives more
meaning to what it actually does. The stopped namespace then becomes
available to indicate a completely stopped server.
(Bitbake rev: 12e9d33bfae5294e3870dfd1202f63383ad05e92)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
The existing backend server implementations were inefficient since they
were sleeping for the full length of the timeouts rather than being woken when
there was data ready for them. It was assumed they would wake and perhaps did
when we forked processes directory but that is no longer the case.
This updates both the process and xmlrpc backends to wait using select(). This
does mean we need to pass the file descriptors to wait on from the internals
who know which these file descriptors are but this is a logical improvement.
Tests of a pathaolgical load on the process server of ~420 rapid tasks
executed on a server with BB_NUMBER_THREAD=48 went from a wall clock
measurement of the overall command execution time of 75s to a much more
reasonable 24s.
(Bitbake rev: 9bee497960889d9baa0a4284d79a384b18a8e826)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Add functionality to allow UIs to update and change the types of events they
recieve. To do this we need to add a new command and also need to be able
to obtain the current event hander ID. In the case of xmlrpc, this is
straightforward, in the case of the process server we need to save the result
in a multiprocessing.Value() so we can retrive it. An excplit command
was added to the server API to facilitate this.
The same function can also be used to mask or unmask specific log messages,
allowing the UI to optionally differ from the standard set of message
filtering.
Based upon work by Cristiana Voicu <cristiana.voicu@intel.com>
(Bitbake rev: ba5a6c88785d9889d4172ec79937ac2a5555327e)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
It turns out we have a number of different ways the process server termination can
hang. If we call cancel_join_thread() on the event queue, it means that it can be left
containing partial data. This means the reading of the event queue in the terminate()
function can hang, the timeout and block parameters to Queue.get() don't make any
difference.
Equally, if we don't call cancel_join_thread(), the join_thread in terminate()
will hang giving a different deadlock.
The best solution I could find is to loop over the process is_alive() after requesting
it stops, trying to join the thread and if that fails, try and flush the event
queue again.
It wasn't clear what difference a force option should make in this case, we're
gracefully trying to empty queues and shut down regardless of whether its a SIGTERM
so I've simply removed the force option.
(Bitbake rev: c5c8f33ca4b81877a0115887849881001b745bf0)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Now we've moved to require python 2.7.3, we can jettison the compatibility
workarounds/hacks for older python versions.
(Bitbake rev: a51c402304f2080a76720f9b31d6dfdbed393bba)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
In an attempt to minimize code duplication, create
clear interfaces, and maximize code reuse through OOP,
bb.server adds base classes for the BitBakeServer,
BitBakeServerConnection and actual server implementations
instructed in particular server types.
These classes document the minimum interfaces that the
derived classes must implement, and provide boilerplate code.
Changes to None, Process and XMLRPC servers as to use
the common server infrastructure.
(Bitbake rev: 6db4a64cef20f8d0aba804db4c4e1eec7b112b46)
Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
With the removal of the none server type, we can remove the launchUI
method and simplify the code slightly.
(Bitbake rev: 9bef2f2dd0bcaa59528ebcb3c1ce053b7dff1ec6)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Using the threading module interacts badly with multiprocessing used elsewhere
in bitbake under certain machine loads. This was leading to bitbake hanging on
Ctrl+C when the PR Server was being used.
This patch converts it to always use the daemonize code which
then means the threading code isn't required.
[YOCTO #3742]
(Bitbake rev: 2d0bbd9398ab839bd2d1e29e50b25d52efb1ce2a)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
In normal usage, we never hit the timeout issue. If we do, it becomes obvious
that the current error handling is not good enough. The request may have made it
to the server and the answer will get queued. This means the next command may get
the return value from the previous command with suitably puzzling results.
Without rewriting large sections of code, its not possible to avoid this problem.
It is better to increase the timeout to several seconds giving the server a chance
to respond and if it does timeout, hard exit since recovery is not possible with the
code base today.
I'd be happy to see the structure of this code improved but this quick fix at least
stops corrupted builds from happening which has to be a good thing.
(Bitbake rev: 410c11dd10736873f2dc587fbe9119c38831e693)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Currently, command.py can return an error message from runCommand, due to
being unable to run the command, yet few of our UIs (just hob) can handle it
today. This can result in seeing a TypeError with traceback in certain rare
circumstances.
To resolve this, we need a clean way to get errors back from runCommand,
without having to isinstance() the return value. This implements such a thing
by making runCommand also return an error (or None if no error occurred).
As runCommand now has a method of returning errors, we can also alter the
getCmdLineAction bits such that the returned value is just the action, not an
additional message. If a sync command wants to return an error, it raises
CommandError(message), and the message will be passed to the caller
appropriately.
Example Usage:
result, error = server.runCommand(...)
if error:
log.error('Unable to run command: %s' % error)
return 1
(Bitbake rev: 717831b8315cb3904d9b590e633000bc897e8fb6)
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This code is dead and doesn't do anything so lets remove it.
(Bitbake rev: 8d45739f49618757a5d7d79782deda355e3981ec)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Update exception handling syntax to use the modern style:
except ExcType as localvar
(Bitbake rev: dbf5f42b06bef81749b13aa99945cc1292a6676d)
Signed-off-by: Scott Garman <scott.a.garman@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Richard Purdie
Ed Bartosh
Lucas Dutra Nunes
Paul Eggleton
Alexandru DAMIAN
Christopher Larson
Scott Garman