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- # ex:ts=4:sw=4:sts=4:et
- # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
- """
- BitBake 'Event' implementation
- Classes and functions for manipulating 'events' in the
- BitBake build tools.
- """
- # Copyright (C) 2003, 2004 Chris Larson
- #
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License version 2 as
- # published by the Free Software Foundation.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License along
- # with this program; if not, write to the Free Software Foundation, Inc.,
- # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- import os, sys
- import warnings
- import bb.utils
- import pickle
- # This is the pid for which we should generate the event. This is set when
- # the runqueue forks off.
- worker_pid = 0
- worker_pipe = None
- class Event:
- """Base class for events"""
- def __init__(self):
- self.pid = worker_pid
- NotHandled = 0
- Handled = 1
- Registered = 10
- AlreadyRegistered = 14
- # Internal
- _handlers = {}
- _ui_handlers = {}
- _ui_handler_seq = 0
- # For compatibility
- bb.utils._context["NotHandled"] = NotHandled
- bb.utils._context["Handled"] = Handled
- def fire_class_handlers(event, d):
- import bb.msg
- if isinstance(event, bb.msg.MsgBase):
- return
- for handler in _handlers:
- h = _handlers[handler]
- event.data = d
- if type(h).__name__ == "code":
- locals = {"e": event}
- bb.utils.simple_exec(h, locals)
- ret = bb.utils.better_eval("tmpHandler(e)", locals)
- if ret is not None:
- warnings.warn("Using Handled/NotHandled in event handlers is deprecated",
- DeprecationWarning, stacklevel = 2)
- else:
- h(event)
- del event.data
- def fire_ui_handlers(event, d):
- errors = []
- for h in _ui_handlers:
- #print "Sending event %s" % event
- try:
- # We use pickle here since it better handles object instances
- # which xmlrpc's marshaller does not. Events *must* be serializable
- # by pickle.
- _ui_handlers[h].event.send((pickle.dumps(event)))
- except:
- errors.append(h)
- for h in errors:
- del _ui_handlers[h]
- def fire(event, d):
- """Fire off an Event"""
- # We can fire class handlers in the worker process context and this is
- # desired so they get the task based datastore.
- # UI handlers need to be fired in the server context so we defer this. They
- # don't have a datastore so the datastore context isn't a problem.
- fire_class_handlers(event, d)
- if worker_pid != 0:
- worker_fire(event, d)
- else:
- fire_ui_handlers(event, d)
- def worker_fire(event, d):
- data = "<event>" + pickle.dumps(event) + "</event>"
- try:
- if os.write(worker_pipe, data) != len (data):
- print("Error sending event to server (short write)")
- except OSError:
- sys.exit(1)
- def fire_from_worker(event, d):
- if not event.startswith("<event>") or not event.endswith("</event>"):
- print("Error, not an event")
- return
- event = pickle.loads(event[7:-8])
- fire_ui_handlers(event, d)
- def register(name, handler):
- """Register an Event handler"""
- # already registered
- if name in _handlers:
- return AlreadyRegistered
- if handler is not None:
- # handle string containing python code
- if type(handler).__name__ == "str":
- tmp = "def tmpHandler(e):\n%s" % handler
- comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event._registerCode")
- _handlers[name] = comp
- else:
- _handlers[name] = handler
- return Registered
- def remove(name, handler):
- """Remove an Event handler"""
- _handlers.pop(name)
- def register_UIHhandler(handler):
- bb.event._ui_handler_seq = bb.event._ui_handler_seq + 1
- _ui_handlers[_ui_handler_seq] = handler
- return _ui_handler_seq
- def unregister_UIHhandler(handlerNum):
- if handlerNum in _ui_handlers:
- del _ui_handlers[handlerNum]
- return
- def getName(e):
- """Returns the name of a class or class instance"""
- if getattr(e, "__name__", None) == None:
- return e.__class__.__name__
- else:
- return e.__name__
- class ConfigParsed(Event):
- """Configuration Parsing Complete"""
- class RecipeParsed(Event):
- """ Recipe Parsing Complete """
- def __init__(self, fn):
- self.fn = fn
- Event.__init__(self)
- class StampUpdate(Event):
- """Trigger for any adjustment of the stamp files to happen"""
- def __init__(self, targets, stampfns):
- self._targets = targets
- self._stampfns = stampfns
- Event.__init__(self)
- def getStampPrefix(self):
- return self._stampfns
- def getTargets(self):
- return self._targets
- stampPrefix = property(getStampPrefix)
- targets = property(getTargets)
- class BuildBase(Event):
- """Base class for bbmake run events"""
- def __init__(self, n, p, failures = 0):
- self._name = n
- self._pkgs = p
- Event.__init__(self)
- self._failures = failures
- def getPkgs(self):
- return self._pkgs
- def setPkgs(self, pkgs):
- self._pkgs = pkgs
- def getName(self):
- return self._name
- def setName(self, name):
- self._name = name
- def getCfg(self):
- return self.data
- def setCfg(self, cfg):
- self.data = cfg
- def getFailures(self):
- """
- Return the number of failed packages
- """
- return self._failures
- pkgs = property(getPkgs, setPkgs, None, "pkgs property")
- name = property(getName, setName, None, "name property")
- cfg = property(getCfg, setCfg, None, "cfg property")
- class BuildStarted(BuildBase):
- """bbmake build run started"""
- class BuildCompleted(BuildBase):
- """bbmake build run completed"""
- class NoProvider(Event):
- """No Provider for an Event"""
- def __init__(self, item, runtime=False, dependees=None):
- Event.__init__(self)
- self._item = item
- self._runtime = runtime
- self._dependees = dependees
- def getItem(self):
- return self._item
- def isRuntime(self):
- return self._runtime
- class MultipleProviders(Event):
- """Multiple Providers"""
- def __init__(self, item, candidates, runtime = False):
- Event.__init__(self)
- self._item = item
- self._candidates = candidates
- self._is_runtime = runtime
- def isRuntime(self):
- """
- Is this a runtime issue?
- """
- return self._is_runtime
- def getItem(self):
- """
- The name for the to be build item
- """
- return self._item
- def getCandidates(self):
- """
- Get the possible Candidates for a PROVIDER.
- """
- return self._candidates
- class ParseProgress(Event):
- """
- Parsing Progress Event
- """
- def __init__(self, cached, parsed, skipped, masked, virtuals, errors, total):
- Event.__init__(self)
- self.cached = cached
- self.parsed = parsed
- self.skipped = skipped
- self.virtuals = virtuals
- self.masked = masked
- self.errors = errors
- self.sofar = cached + parsed
- self.total = total
- class DepTreeGenerated(Event):
- """
- Event when a dependency tree has been generated
- """
- def __init__(self, depgraph):
- Event.__init__(self)
- self._depgraph = depgraph
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