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76a281c870
poky/bitbake/lib/bb/cache.py
Paul Eggleton 76a281c870 bitbake: taskdata: add the ability to access world targets list 
In certain circumstances it can be useful to get access to the world
targets list from a recipe in order to add dependencies on some or all
of the items in it. If a special function, 'calculate_extra_depends' is
defined in the recipe, and the recipe is to be built, then call it at
the right point before we calculate which tasks should be run. The
function can append items to the "deps" list in order to add
dependencies. This is not as tidy a solution as I would have liked, but
it does at least do the job.

As part of this change, the buildWorldTargets function was moved to
bb.providers to make it possible to call from taskdata.

Part of the implementation of [YOCTO #8600].

(Bitbake rev: aba0dce57c889495ec5c13919991a060aeff65d2)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2016-01-22 12:45:44 +00:00

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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# BitBake Cache implementation
#
# Caching of bitbake variables before task execution
# Copyright (C) 2006 Richard Purdie
# Copyright (C) 2012 Intel Corporation
# but small sections based on code from bin/bitbake:
# Copyright (C) 2003, 2004 Chris Larson
# Copyright (C) 2003, 2004 Phil Blundell
# Copyright (C) 2003 - 2005 Michael 'Mickey' Lauer
# Copyright (C) 2005 Holger Hans Peter Freyther
# Copyright (C) 2005 ROAD GmbH
#
# 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
import logging
from collections import defaultdict
import bb.utils
logger = logging.getLogger("BitBake.Cache")
try:
import cPickle as pickle
except ImportError:
import pickle
logger.info("Importing cPickle failed. "
"Falling back to a very slow implementation.")
__cache_version__ = "149"
def getCacheFile(path, filename, data_hash):
return os.path.join(path, filename + "." + data_hash)
# RecipeInfoCommon defines common data retrieving methods
# from meta data for caches. CoreRecipeInfo as well as other
# Extra RecipeInfo needs to inherit this class
class RecipeInfoCommon(object):
@classmethod
def listvar(cls, var, metadata):
return cls.getvar(var, metadata).split()
@classmethod
def intvar(cls, var, metadata):
return int(cls.getvar(var, metadata) or 0)
@classmethod
def depvar(cls, var, metadata):
return bb.utils.explode_deps(cls.getvar(var, metadata))
@classmethod
def pkgvar(cls, var, packages, metadata):
return dict((pkg, cls.depvar("%s_%s" % (var, pkg), metadata))
for pkg in packages)
@classmethod
def taskvar(cls, var, tasks, metadata):
return dict((task, cls.getvar("%s_task-%s" % (var, task), metadata))
for task in tasks)
@classmethod
def flaglist(cls, flag, varlist, metadata, squash=False):
out_dict = dict((var, metadata.getVarFlag(var, flag, True))
for var in varlist)
if squash:
return dict((k,v) for (k,v) in out_dict.iteritems() if v)
else:
return out_dict
@classmethod
def getvar(cls, var, metadata, expand = True):
return metadata.getVar(var, expand) or ''
class CoreRecipeInfo(RecipeInfoCommon):
__slots__ = ()
cachefile = "bb_cache.dat"
def __init__(self, filename, metadata):
self.file_depends = metadata.getVar('__depends', False)
self.timestamp = bb.parse.cached_mtime(filename)
self.variants = self.listvar('__VARIANTS', metadata) + ['']
self.appends = self.listvar('__BBAPPEND', metadata)
self.nocache = self.getvar('__BB_DONT_CACHE', metadata)
self.skipreason = self.getvar('__SKIPPED', metadata)
if self.skipreason:
self.pn = self.getvar('PN', metadata) or bb.parse.BBHandler.vars_from_file(filename,metadata)[0]
self.skipped = True
self.provides = self.depvar('PROVIDES', metadata)
self.rprovides = self.depvar('RPROVIDES', metadata)
return
self.tasks = metadata.getVar('__BBTASKS', False)
self.pn = self.getvar('PN', metadata)
self.packages = self.listvar('PACKAGES', metadata)
if not self.pn in self.packages:
self.packages.append(self.pn)
self.basetaskhashes = self.taskvar('BB_BASEHASH', self.tasks, metadata)
self.hashfilename = self.getvar('BB_HASHFILENAME', metadata)
self.task_deps = metadata.getVar('_task_deps', False) or {'tasks': [], 'parents': {}}
self.skipped = False
self.pe = self.getvar('PE', metadata)
self.pv = self.getvar('PV', metadata)
self.pr = self.getvar('PR', metadata)
self.defaultpref = self.intvar('DEFAULT_PREFERENCE', metadata)
self.not_world = self.getvar('EXCLUDE_FROM_WORLD', metadata)
self.stamp = self.getvar('STAMP', metadata)
self.stampclean = self.getvar('STAMPCLEAN', metadata)
self.stamp_extrainfo = self.flaglist('stamp-extra-info', self.tasks, metadata)
self.file_checksums = self.flaglist('file-checksums', self.tasks, metadata, True)
self.packages_dynamic = self.listvar('PACKAGES_DYNAMIC', metadata)
self.depends = self.depvar('DEPENDS', metadata)
self.provides = self.depvar('PROVIDES', metadata)
self.rdepends = self.depvar('RDEPENDS', metadata)
self.rprovides = self.depvar('RPROVIDES', metadata)
self.rrecommends = self.depvar('RRECOMMENDS', metadata)
self.rprovides_pkg = self.pkgvar('RPROVIDES', self.packages, metadata)
self.rdepends_pkg = self.pkgvar('RDEPENDS', self.packages, metadata)
self.rrecommends_pkg = self.pkgvar('RRECOMMENDS', self.packages, metadata)
self.inherits = self.getvar('__inherit_cache', metadata, expand=False)
self.fakerootenv = self.getvar('FAKEROOTENV', metadata)
self.fakerootdirs = self.getvar('FAKEROOTDIRS', metadata)
self.fakerootnoenv = self.getvar('FAKEROOTNOENV', metadata)
self.extradepsfunc = self.getvar('calculate_extra_depends', metadata)
@classmethod
def init_cacheData(cls, cachedata):
# CacheData in Core RecipeInfo Class
cachedata.task_deps = {}
cachedata.pkg_fn = {}
cachedata.pkg_pn = defaultdict(list)
cachedata.pkg_pepvpr = {}
cachedata.pkg_dp = {}
cachedata.stamp = {}
cachedata.stampclean = {}
cachedata.stamp_extrainfo = {}
cachedata.file_checksums = {}
cachedata.fn_provides = {}
cachedata.pn_provides = defaultdict(list)
cachedata.all_depends = []
cachedata.deps = defaultdict(list)
cachedata.packages = defaultdict(list)
cachedata.providers = defaultdict(list)
cachedata.rproviders = defaultdict(list)
cachedata.packages_dynamic = defaultdict(list)
cachedata.rundeps = defaultdict(lambda: defaultdict(list))
cachedata.runrecs = defaultdict(lambda: defaultdict(list))
cachedata.possible_world = []
cachedata.universe_target = []
cachedata.hashfn = {}
cachedata.basetaskhash = {}
cachedata.inherits = {}
cachedata.fakerootenv = {}
cachedata.fakerootnoenv = {}
cachedata.fakerootdirs = {}
cachedata.extradepsfunc = {}
def add_cacheData(self, cachedata, fn):
cachedata.task_deps[fn] = self.task_deps
cachedata.pkg_fn[fn] = self.pn
cachedata.pkg_pn[self.pn].append(fn)
cachedata.pkg_pepvpr[fn] = (self.pe, self.pv, self.pr)
cachedata.pkg_dp[fn] = self.defaultpref
cachedata.stamp[fn] = self.stamp
cachedata.stampclean[fn] = self.stampclean
cachedata.stamp_extrainfo[fn] = self.stamp_extrainfo
cachedata.file_checksums[fn] = self.file_checksums
provides = [self.pn]
for provide in self.provides:
if provide not in provides:
provides.append(provide)
cachedata.fn_provides[fn] = provides
for provide in provides:
cachedata.providers[provide].append(fn)
if provide not in cachedata.pn_provides[self.pn]:
cachedata.pn_provides[self.pn].append(provide)
for dep in self.depends:
if dep not in cachedata.deps[fn]:
cachedata.deps[fn].append(dep)
if dep not in cachedata.all_depends:
cachedata.all_depends.append(dep)
rprovides = self.rprovides
for package in self.packages:
cachedata.packages[package].append(fn)
rprovides += self.rprovides_pkg[package]
for rprovide in rprovides:
if fn not in cachedata.rproviders[rprovide]:
cachedata.rproviders[rprovide].append(fn)
for package in self.packages_dynamic:
cachedata.packages_dynamic[package].append(fn)
# Build hash of runtime depends and recommends
for package in self.packages + [self.pn]:
cachedata.rundeps[fn][package] = list(self.rdepends) + self.rdepends_pkg[package]
cachedata.runrecs[fn][package] = list(self.rrecommends) + self.rrecommends_pkg[package]
# Collect files we may need for possible world-dep
# calculations
if self.not_world:
logger.debug(1, "EXCLUDE FROM WORLD: %s", fn)
else:
cachedata.possible_world.append(fn)
# create a collection of all targets for sanity checking
# tasks, such as upstream versions, license, and tools for
# task and image creation.
cachedata.universe_target.append(self.pn)
cachedata.hashfn[fn] = self.hashfilename
for task, taskhash in self.basetaskhashes.iteritems():
identifier = '%s.%s' % (fn, task)
cachedata.basetaskhash[identifier] = taskhash
cachedata.inherits[fn] = self.inherits
cachedata.fakerootenv[fn] = self.fakerootenv
cachedata.fakerootnoenv[fn] = self.fakerootnoenv
cachedata.fakerootdirs[fn] = self.fakerootdirs
cachedata.extradepsfunc[fn] = self.extradepsfunc
class Cache(object):
"""
BitBake Cache implementation
"""
def __init__(self, data, data_hash, caches_array):
# Pass caches_array information into Cache Constructor
# It will be used later for deciding whether we
# need extra cache file dump/load support
self.caches_array = caches_array
self.cachedir = data.getVar("CACHE", True)
self.clean = set()
self.checked = set()
self.depends_cache = {}
self.data = None
self.data_fn = None
self.cacheclean = True
self.data_hash = data_hash
if self.cachedir in [None, '']:
self.has_cache = False
logger.info("Not using a cache. "
"Set CACHE = <directory> to enable.")
return
self.has_cache = True
self.cachefile = getCacheFile(self.cachedir, "bb_cache.dat", self.data_hash)
logger.debug(1, "Using cache in '%s'", self.cachedir)
bb.utils.mkdirhier(self.cachedir)
cache_ok = True
if self.caches_array:
for cache_class in self.caches_array:
if type(cache_class) is type and issubclass(cache_class, RecipeInfoCommon):
cachefile = getCacheFile(self.cachedir, cache_class.cachefile, self.data_hash)
cache_ok = cache_ok and os.path.exists(cachefile)
cache_class.init_cacheData(self)
if cache_ok:
self.load_cachefile()
elif os.path.isfile(self.cachefile):
logger.info("Out of date cache found, rebuilding...")
def load_cachefile(self):
# Firstly, using core cache file information for
# valid checking
with open(self.cachefile, "rb") as cachefile:
pickled = pickle.Unpickler(cachefile)
try:
cache_ver = pickled.load()
bitbake_ver = pickled.load()
except Exception:
logger.info('Invalid cache, rebuilding...')
return
if cache_ver != __cache_version__:
logger.info('Cache version mismatch, rebuilding...')
return
elif bitbake_ver != bb.__version__:
logger.info('Bitbake version mismatch, rebuilding...')
return
cachesize = 0
previous_progress = 0
previous_percent = 0
# Calculate the correct cachesize of all those cache files
for cache_class in self.caches_array:
if type(cache_class) is type and issubclass(cache_class, RecipeInfoCommon):
cachefile = getCacheFile(self.cachedir, cache_class.cachefile, self.data_hash)
with open(cachefile, "rb") as cachefile:
cachesize += os.fstat(cachefile.fileno()).st_size
bb.event.fire(bb.event.CacheLoadStarted(cachesize), self.data)
for cache_class in self.caches_array:
if type(cache_class) is type and issubclass(cache_class, RecipeInfoCommon):
cachefile = getCacheFile(self.cachedir, cache_class.cachefile, self.data_hash)
with open(cachefile, "rb") as cachefile:
pickled = pickle.Unpickler(cachefile)
while cachefile:
try:
key = pickled.load()
value = pickled.load()
except Exception:
break
if self.depends_cache.has_key(key):
self.depends_cache[key].append(value)
else:
self.depends_cache[key] = [value]
# only fire events on even percentage boundaries
current_progress = cachefile.tell() + previous_progress
current_percent = 100 * current_progress / cachesize
if current_percent > previous_percent:
previous_percent = current_percent
bb.event.fire(bb.event.CacheLoadProgress(current_progress, cachesize),
self.data)
previous_progress += current_progress
# Note: depends cache number is corresponding to the parsing file numbers.
# The same file has several caches, still regarded as one item in the cache
bb.event.fire(bb.event.CacheLoadCompleted(cachesize,
len(self.depends_cache)),
self.data)
@staticmethod
def virtualfn2realfn(virtualfn):
"""
Convert a virtual file name to a real one + the associated subclass keyword
"""
fn = virtualfn
cls = ""
if virtualfn.startswith('virtual:'):
elems = virtualfn.split(':')
cls = ":".join(elems[1:-1])
fn = elems[-1]
return (fn, cls)
@staticmethod
def realfn2virtual(realfn, cls):
"""
Convert a real filename + the associated subclass keyword to a virtual filename
"""
if cls == "":
return realfn
return "virtual:" + cls + ":" + realfn
@classmethod
def loadDataFull(cls, virtualfn, appends, cfgData):
"""
Return a complete set of data for fn.
To do this, we need to parse the file.
"""
(fn, virtual) = cls.virtualfn2realfn(virtualfn)
logger.debug(1, "Parsing %s (full)", fn)
cfgData.setVar("__ONLYFINALISE", virtual or "default")
bb_data = cls.load_bbfile(fn, appends, cfgData)
return bb_data[virtual]
@classmethod
def parse(cls, filename, appends, configdata, caches_array):
"""Parse the specified filename, returning the recipe information"""
infos = []
datastores = cls.load_bbfile(filename, appends, configdata)
depends = []
for variant, data in sorted(datastores.iteritems(),
key=lambda i: i[0],
reverse=True):
virtualfn = cls.realfn2virtual(filename, variant)
depends = depends + (data.getVar("__depends", False) or [])
if depends and not variant:
data.setVar("__depends", depends)
info_array = []
for cache_class in caches_array:
if type(cache_class) is type and issubclass(cache_class, RecipeInfoCommon):
info = cache_class(filename, data)
info_array.append(info)
infos.append((virtualfn, info_array))
return infos
def load(self, filename, appends, configdata):
"""Obtain the recipe information for the specified filename,
using cached values if available, otherwise parsing.
Note that if it does parse to obtain the info, it will not
automatically add the information to the cache or to your
CacheData. Use the add or add_info method to do so after
running this, or use loadData instead."""
cached = self.cacheValid(filename, appends)
if cached:
infos = []
# info_array item is a list of [CoreRecipeInfo, XXXRecipeInfo]
info_array = self.depends_cache[filename]
for variant in info_array[0].variants:
virtualfn = self.realfn2virtual(filename, variant)
infos.append((virtualfn, self.depends_cache[virtualfn]))
else:
logger.debug(1, "Parsing %s", filename)
return self.parse(filename, appends, configdata, self.caches_array)
return cached, infos
def loadData(self, fn, appends, cfgData, cacheData):
"""Load the recipe info for the specified filename,
parsing and adding to the cache if necessary, and adding
the recipe information to the supplied CacheData instance."""
skipped, virtuals = 0, 0
cached, infos = self.load(fn, appends, cfgData)
for virtualfn, info_array in infos:
if info_array[0].skipped:
logger.debug(1, "Skipping %s: %s", virtualfn, info_array[0].skipreason)
skipped += 1
else:
self.add_info(virtualfn, info_array, cacheData, not cached)
virtuals += 1
return cached, skipped, virtuals
def cacheValid(self, fn, appends):
"""
Is the cache valid for fn?
Fast version, no timestamps checked.
"""
if fn not in self.checked:
self.cacheValidUpdate(fn, appends)
# Is cache enabled?
if not self.has_cache:
return False
if fn in self.clean:
return True
return False
def cacheValidUpdate(self, fn, appends):
"""
Is the cache valid for fn?
Make thorough (slower) checks including timestamps.
"""
# Is cache enabled?
if not self.has_cache:
return False
self.checked.add(fn)
# File isn't in depends_cache
if not fn in self.depends_cache:
logger.debug(2, "Cache: %s is not cached", fn)
return False
mtime = bb.parse.cached_mtime_noerror(fn)
# Check file still exists
if mtime == 0:
logger.debug(2, "Cache: %s no longer exists", fn)
self.remove(fn)
return False
info_array = self.depends_cache[fn]
# Check the file's timestamp
if mtime != info_array[0].timestamp:
logger.debug(2, "Cache: %s changed", fn)
self.remove(fn)
return False
# Check dependencies are still valid
depends = info_array[0].file_depends
if depends:
for f, old_mtime in depends:
fmtime = bb.parse.cached_mtime_noerror(f)
# Check if file still exists
if old_mtime != 0 and fmtime == 0:
logger.debug(2, "Cache: %s's dependency %s was removed",
fn, f)
self.remove(fn)
return False
if (fmtime != old_mtime):
logger.debug(2, "Cache: %s's dependency %s changed",
fn, f)
self.remove(fn)
return False
if hasattr(info_array[0], 'file_checksums'):
for _, fl in info_array[0].file_checksums.items():
fl = fl.strip()
while fl:
# A .split() would be simpler but means spaces or colons in filenames would break
a = fl.find(":True")
b = fl.find(":False")
if ((a < 0) and b) or ((b > 0) and (b < a)):
f = fl[:b+6]
fl = fl[b+7:]
elif ((b < 0) and a) or ((a > 0) and (a < b)):
f = fl[:a+5]
fl = fl[a+6:]
else:
break
fl = fl.strip()
if "*" in f:
continue
f, exist = f.split(":")
if (exist == "True" and not os.path.exists(f)) or (exist == "False" and os.path.exists(f)):
logger.debug(2, "Cache: %s's file checksum list file %s changed",
fn, f)
self.remove(fn)
return False
if appends != info_array[0].appends:
logger.debug(2, "Cache: appends for %s changed", fn)
logger.debug(2, "%s to %s" % (str(appends), str(info_array[0].appends)))
self.remove(fn)
return False
invalid = False
for cls in info_array[0].variants:
virtualfn = self.realfn2virtual(fn, cls)
self.clean.add(virtualfn)
if virtualfn not in self.depends_cache:
logger.debug(2, "Cache: %s is not cached", virtualfn)
invalid = True
# If any one of the variants is not present, mark as invalid for all
if invalid:
for cls in info_array[0].variants:
virtualfn = self.realfn2virtual(fn, cls)
if virtualfn in self.clean:
logger.debug(2, "Cache: Removing %s from cache", virtualfn)
self.clean.remove(virtualfn)
if fn in self.clean:
logger.debug(2, "Cache: Marking %s as not clean", fn)
self.clean.remove(fn)
return False
self.clean.add(fn)
return True
def remove(self, fn):
"""
Remove a fn from the cache
Called from the parser in error cases
"""
if fn in self.depends_cache:
logger.debug(1, "Removing %s from cache", fn)
del self.depends_cache[fn]
if fn in self.clean:
logger.debug(1, "Marking %s as unclean", fn)
self.clean.remove(fn)
def sync(self):
"""
Save the cache
Called from the parser when complete (or exiting)
"""
if not self.has_cache:
return
if self.cacheclean:
logger.debug(2, "Cache is clean, not saving.")
return
file_dict = {}
pickler_dict = {}
for cache_class in self.caches_array:
if type(cache_class) is type and issubclass(cache_class, RecipeInfoCommon):
cache_class_name = cache_class.__name__
cachefile = getCacheFile(self.cachedir, cache_class.cachefile, self.data_hash)
file_dict[cache_class_name] = open(cachefile, "wb")
pickler_dict[cache_class_name] = pickle.Pickler(file_dict[cache_class_name], pickle.HIGHEST_PROTOCOL)
pickler_dict['CoreRecipeInfo'].dump(__cache_version__)
pickler_dict['CoreRecipeInfo'].dump(bb.__version__)
try:
for key, info_array in self.depends_cache.iteritems():
for info in info_array:
if isinstance(info, RecipeInfoCommon):
cache_class_name = info.__class__.__name__
pickler_dict[cache_class_name].dump(key)
pickler_dict[cache_class_name].dump(info)
finally:
for cache_class in self.caches_array:
if type(cache_class) is type and issubclass(cache_class, RecipeInfoCommon):
cache_class_name = cache_class.__name__
file_dict[cache_class_name].close()
del self.depends_cache
@staticmethod
def mtime(cachefile):
return bb.parse.cached_mtime_noerror(cachefile)
def add_info(self, filename, info_array, cacheData, parsed=None, watcher=None):
if isinstance(info_array[0], CoreRecipeInfo) and (not info_array[0].skipped):
cacheData.add_from_recipeinfo(filename, info_array)
if watcher:
watcher(info_array[0].file_depends)
if not self.has_cache:
return
if (info_array[0].skipped or 'SRCREVINACTION' not in info_array[0].pv) and not info_array[0].nocache:
if parsed:
self.cacheclean = False
self.depends_cache[filename] = info_array
def add(self, file_name, data, cacheData, parsed=None):
"""
Save data we need into the cache
"""
realfn = self.virtualfn2realfn(file_name)[0]
info_array = []
for cache_class in self.caches_array:
if type(cache_class) is type and issubclass(cache_class, RecipeInfoCommon):
info_array.append(cache_class(realfn, data))
self.add_info(file_name, info_array, cacheData, parsed)
@staticmethod
def load_bbfile(bbfile, appends, config):
"""
Load and parse one .bb build file
Return the data and whether parsing resulted in the file being skipped
"""
chdir_back = False
from bb import parse
# expand tmpdir to include this topdir
config.setVar('TMPDIR', config.getVar('TMPDIR', True) or "")
bbfile_loc = os.path.abspath(os.path.dirname(bbfile))
oldpath = os.path.abspath(os.getcwd())
parse.cached_mtime_noerror(bbfile_loc)
bb_data = config.createCopy()
# The ConfHandler first looks if there is a TOPDIR and if not
# then it would call getcwd().
# Previously, we chdir()ed to bbfile_loc, called the handler
# and finally chdir()ed back, a couple of thousand times. We now
# just fill in TOPDIR to point to bbfile_loc if there is no TOPDIR yet.
if not bb_data.getVar('TOPDIR', False):
chdir_back = True
bb_data.setVar('TOPDIR', bbfile_loc)
try:
if appends:
bb_data.setVar('__BBAPPEND', " ".join(appends))
bb_data = parse.handle(bbfile, bb_data)
if chdir_back:
os.chdir(oldpath)
return bb_data
except:
if chdir_back:
os.chdir(oldpath)
raise
def init(cooker):
"""
The Objective: Cache the minimum amount of data possible yet get to the
stage of building packages (i.e. tryBuild) without reparsing any .bb files.
To do this, we intercept getVar calls and only cache the variables we see
being accessed. We rely on the cache getVar calls being made for all
variables bitbake might need to use to reach this stage. For each cached
file we need to track:
* Its mtime
* The mtimes of all its dependencies
* Whether it caused a parse.SkipRecipe exception
Files causing parsing errors are evicted from the cache.
"""
return Cache(cooker.configuration.data, cooker.configuration.data_hash)
class CacheData(object):
"""
The data structures we compile from the cached data
"""
def __init__(self, caches_array):
self.caches_array = caches_array
for cache_class in self.caches_array:
if type(cache_class) is type and issubclass(cache_class, RecipeInfoCommon):
cache_class.init_cacheData(self)
# Direct cache variables
self.task_queues = {}
self.preferred = {}
self.tasks = {}
# Indirect Cache variables (set elsewhere)
self.ignored_dependencies = []
self.world_target = set()
self.bbfile_priority = {}
def add_from_recipeinfo(self, fn, info_array):
for info in info_array:
info.add_cacheData(self, fn)
class MultiProcessCache(object):
"""
BitBake multi-process cache implementation
Used by the codeparser & file checksum caches
"""
def __init__(self):
self.cachefile = None
self.cachedata = self.create_cachedata()
self.cachedata_extras = self.create_cachedata()
def init_cache(self, d):
cachedir = (d.getVar("PERSISTENT_DIR", True) or
d.getVar("CACHE", True))
if cachedir in [None, '']:
return
bb.utils.mkdirhier(cachedir)
self.cachefile = os.path.join(cachedir, self.__class__.cache_file_name)
logger.debug(1, "Using cache in '%s'", self.cachefile)
glf = bb.utils.lockfile(self.cachefile + ".lock")
try:
with open(self.cachefile, "rb") as f:
p = pickle.Unpickler(f)
data, version = p.load()
except:
bb.utils.unlockfile(glf)
return
bb.utils.unlockfile(glf)
if version != self.__class__.CACHE_VERSION:
return
self.cachedata = data
def create_cachedata(self):
data = [{}]
return data
def save_extras(self, d):
if not self.cachefile:
return
glf = bb.utils.lockfile(self.cachefile + ".lock", shared=True)
i = os.getpid()
lf = None
while not lf:
lf = bb.utils.lockfile(self.cachefile + ".lock." + str(i), retry=False)
if not lf or os.path.exists(self.cachefile + "-" + str(i)):
if lf:
bb.utils.unlockfile(lf)
lf = None
i = i + 1
continue
with open(self.cachefile + "-" + str(i), "wb") as f:
p = pickle.Pickler(f, -1)
p.dump([self.cachedata_extras, self.__class__.CACHE_VERSION])
bb.utils.unlockfile(lf)
bb.utils.unlockfile(glf)
def merge_data(self, source, dest):
for j in range(0,len(dest)):
for h in source[j]:
if h not in dest[j]:
dest[j][h] = source[j][h]
def save_merge(self, d):
if not self.cachefile:
return
glf = bb.utils.lockfile(self.cachefile + ".lock")
data = self.cachedata
for f in [y for y in os.listdir(os.path.dirname(self.cachefile)) if y.startswith(os.path.basename(self.cachefile) + '-')]:
f = os.path.join(os.path.dirname(self.cachefile), f)
try:
with open(f, "rb") as fd:
p = pickle.Unpickler(fd)
extradata, version = p.load()
except (IOError, EOFError):
os.unlink(f)
continue
if version != self.__class__.CACHE_VERSION:
os.unlink(f)
continue
self.merge_data(extradata, data)
os.unlink(f)
with open(self.cachefile, "wb") as f:
p = pickle.Pickler(f, -1)
p.dump([data, self.__class__.CACHE_VERSION])
bb.utils.unlockfile(glf)
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