blob: ee924b2d2b79d9a86ad12157e9cc773d8e43d846 [file] [log] [blame]
#
# 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
#
# SPDX-License-Identifier: GPL-2.0-only
#
import os
import logging
import pickle
from collections import defaultdict
from collections.abc import Mapping
import bb.utils
from bb import PrefixLoggerAdapter
import re
import shutil
logger = logging.getLogger("BitBake.Cache")
__cache_version__ = "155"
def getCacheFile(path, filename, mc, data_hash):
mcspec = ''
if mc:
mcspec = ".%s" % mc
return os.path.join(path, filename + mcspec + "." + 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))
for var in varlist)
if squash:
return dict((k,v) for (k,v) in out_dict.items() 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.provides = self.depvar('PROVIDES', metadata)
self.rprovides = self.depvar('RPROVIDES', metadata)
self.pn = self.getvar('PN', metadata) or bb.parse.vars_from_file(filename,metadata)[0]
self.packages = self.listvar('PACKAGES', metadata)
if not self.packages:
self.packages.append(self.pn)
self.packages_dynamic = self.listvar('PACKAGES_DYNAMIC', metadata)
self.rprovides_pkg = self.pkgvar('RPROVIDES', self.packages, metadata)
self.skipreason = self.getvar('__SKIPPED', metadata)
if self.skipreason:
self.skipped = True
return
self.tasks = metadata.getVar('__BBTASKS', False)
self.basetaskhashes = metadata.getVar('__siggen_basehashes', False) or {}
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.depends = self.depvar('DEPENDS', metadata)
self.rdepends = self.depvar('RDEPENDS', metadata)
self.rrecommends = self.depvar('RRECOMMENDS', 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.fakerootlogs = self.getvar('FAKEROOTLOGS', 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.fakerootlogs = {}
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:
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 not self.not_world:
cachedata.possible_world.append(fn)
#else:
# logger.debug2("EXCLUDE FROM WORLD: %s", 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.items():
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.fakerootlogs[fn] = self.fakerootlogs
cachedata.extradepsfunc[fn] = self.extradepsfunc
class SiggenRecipeInfo(RecipeInfoCommon):
__slots__ = ()
classname = "SiggenRecipeInfo"
cachefile = "bb_cache_" + classname +".dat"
# we don't want to show this information in graph files so don't set cachefields
#cachefields = []
def __init__(self, filename, metadata):
self.siggen_gendeps = metadata.getVar("__siggen_gendeps", False)
self.siggen_varvals = metadata.getVar("__siggen_varvals", False)
self.siggen_taskdeps = metadata.getVar("__siggen_taskdeps", False)
@classmethod
def init_cacheData(cls, cachedata):
cachedata.siggen_taskdeps = {}
cachedata.siggen_gendeps = {}
cachedata.siggen_varvals = {}
def add_cacheData(self, cachedata, fn):
cachedata.siggen_gendeps[fn] = self.siggen_gendeps
cachedata.siggen_varvals[fn] = self.siggen_varvals
cachedata.siggen_taskdeps[fn] = self.siggen_taskdeps
# The siggen variable data is large and impacts:
# - bitbake's overall memory usage
# - the amount of data sent over IPC between parsing processes and the server
# - the size of the cache files on disk
# - the size of "sigdata" hash information files on disk
# The data consists of strings (some large) or frozenset lists of variables
# As such, we a) deplicate the data here and b) pass references to the object at second
# access (e.g. over IPC or saving into pickle).
store = {}
save_map = {}
save_count = 1
restore_map = {}
restore_count = {}
@classmethod
def reset(cls):
# Needs to be called before starting new streamed data in a given process
# (e.g. writing out the cache again)
cls.save_map = {}
cls.save_count = 1
cls.restore_map = {}
@classmethod
def _save(cls, deps):
ret = []
if not deps:
return deps
for dep in deps:
fs = deps[dep]
if fs is None:
ret.append((dep, None, None))
elif fs in cls.save_map:
ret.append((dep, None, cls.save_map[fs]))
else:
cls.save_map[fs] = cls.save_count
ret.append((dep, fs, cls.save_count))
cls.save_count = cls.save_count + 1
return ret
@classmethod
def _restore(cls, deps, pid):
ret = {}
if not deps:
return deps
if pid not in cls.restore_map:
cls.restore_map[pid] = {}
map = cls.restore_map[pid]
for dep, fs, mapnum in deps:
if fs is None and mapnum is None:
ret[dep] = None
elif fs is None:
ret[dep] = map[mapnum]
else:
try:
fs = cls.store[fs]
except KeyError:
cls.store[fs] = fs
map[mapnum] = fs
ret[dep] = fs
return ret
def __getstate__(self):
ret = {}
for key in ["siggen_gendeps", "siggen_taskdeps", "siggen_varvals"]:
ret[key] = self._save(self.__dict__[key])
ret['pid'] = os.getpid()
return ret
def __setstate__(self, state):
pid = state['pid']
for key in ["siggen_gendeps", "siggen_taskdeps", "siggen_varvals"]:
setattr(self, key, self._restore(state[key], pid))
def virtualfn2realfn(virtualfn):
"""
Convert a virtual file name to a real one + the associated subclass keyword
"""
mc = ""
if virtualfn.startswith('mc:') and virtualfn.count(':') >= 2:
elems = virtualfn.split(':')
mc = elems[1]
virtualfn = ":".join(elems[2:])
fn = virtualfn
cls = ""
if virtualfn.startswith('virtual:'):
elems = virtualfn.split(':')
cls = ":".join(elems[1:-1])
fn = elems[-1]
return (fn, cls, mc)
def realfn2virtual(realfn, cls, mc):
"""
Convert a real filename + the associated subclass keyword to a virtual filename
"""
if cls:
realfn = "virtual:" + cls + ":" + realfn
if mc:
realfn = "mc:" + mc + ":" + realfn
return realfn
def variant2virtual(realfn, variant):
"""
Convert a real filename + the associated subclass keyword to a virtual filename
"""
if variant == "":
return realfn
if variant.startswith("mc:") and variant.count(':') >= 2:
elems = variant.split(":")
if elems[2]:
return "mc:" + elems[1] + ":virtual:" + ":".join(elems[2:]) + ":" + realfn
return "mc:" + elems[1] + ":" + realfn
return "virtual:" + variant + ":" + realfn
#
# Cooker calls cacheValid on its recipe list, then either calls loadCached
# from it's main thread or parse from separate processes to generate an up to
# date cache
#
class Cache(object):
"""
BitBake Cache implementation
"""
def __init__(self, databuilder, mc, data_hash, caches_array):
self.databuilder = databuilder
self.data = databuilder.data
# Pass caches_array information into Cache Constructor
# It will be used later for deciding whether we
# need extra cache file dump/load support
self.mc = mc
self.logger = PrefixLoggerAdapter("Cache: %s: " % (mc if mc else "default"), logger)
self.caches_array = caches_array
self.cachedir = self.data.getVar("CACHE")
self.clean = set()
self.checked = set()
self.depends_cache = {}
self.data_fn = None
self.cacheclean = True
self.data_hash = data_hash
self.filelist_regex = re.compile(r'(?:(?<=:True)|(?<=:False))\s+')
if self.cachedir in [None, '']:
bb.fatal("Please ensure CACHE is set to the cache directory for BitBake to use")
def getCacheFile(self, cachefile):
return getCacheFile(self.cachedir, cachefile, self.mc, self.data_hash)
def prepare_cache(self, progress):
loaded = 0
self.cachefile = self.getCacheFile("bb_cache.dat")
self.logger.debug("Cache dir: %s", self.cachedir)
bb.utils.mkdirhier(self.cachedir)
cache_ok = True
if self.caches_array:
for cache_class in self.caches_array:
cachefile = self.getCacheFile(cache_class.cachefile)
cache_exists = os.path.exists(cachefile)
self.logger.debug2("Checking if %s exists: %r", cachefile, cache_exists)
cache_ok = cache_ok and cache_exists
cache_class.init_cacheData(self)
if cache_ok:
loaded = self.load_cachefile(progress)
elif os.path.isfile(self.cachefile):
self.logger.info("Out of date cache found, rebuilding...")
else:
self.logger.debug("Cache file %s not found, building..." % self.cachefile)
# We don't use the symlink, its just for debugging convinience
if self.mc:
symlink = os.path.join(self.cachedir, "bb_cache.dat.%s" % self.mc)
else:
symlink = os.path.join(self.cachedir, "bb_cache.dat")
if os.path.exists(symlink):
bb.utils.remove(symlink)
try:
os.symlink(os.path.basename(self.cachefile), symlink)
except OSError:
pass
return loaded
def cachesize(self):
cachesize = 0
for cache_class in self.caches_array:
cachefile = self.getCacheFile(cache_class.cachefile)
try:
with open(cachefile, "rb") as cachefile:
cachesize += os.fstat(cachefile.fileno()).st_size
except FileNotFoundError:
pass
return cachesize
def load_cachefile(self, progress):
previous_progress = 0
for cache_class in self.caches_array:
cachefile = self.getCacheFile(cache_class.cachefile)
self.logger.debug('Loading cache file: %s' % cachefile)
with open(cachefile, "rb") as cachefile:
pickled = pickle.Unpickler(cachefile)
# Check cache version information
try:
cache_ver = pickled.load()
bitbake_ver = pickled.load()
except Exception:
self.logger.info('Invalid cache, rebuilding...')
return 0
if cache_ver != __cache_version__:
self.logger.info('Cache version mismatch, rebuilding...')
return 0
elif bitbake_ver != bb.__version__:
self.logger.info('Bitbake version mismatch, rebuilding...')
return 0
# Load the rest of the cache file
current_progress = 0
while cachefile:
try:
key = pickled.load()
value = pickled.load()
except Exception:
break
if not isinstance(key, str):
bb.warn("%s from extras cache is not a string?" % key)
break
if not isinstance(value, RecipeInfoCommon):
bb.warn("%s from extras cache is not a RecipeInfoCommon class?" % value)
break
if key in self.depends_cache:
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
progress(cachefile.tell() + previous_progress)
previous_progress += current_progress
return len(self.depends_cache)
def parse(self, filename, appends):
"""Parse the specified filename, returning the recipe information"""
self.logger.debug("Parsing %s", filename)
infos = []
datastores = self.databuilder.parseRecipeVariants(filename, appends, mc=self.mc)
depends = []
variants = []
# Process the "real" fn last so we can store variants list
for variant, data in sorted(datastores.items(),
key=lambda i: i[0],
reverse=True):
virtualfn = variant2virtual(filename, variant)
variants.append(variant)
depends = depends + (data.getVar("__depends", False) or [])
if depends and not variant:
data.setVar("__depends", depends)
if virtualfn == filename:
data.setVar("__VARIANTS", " ".join(variants))
info_array = []
for cache_class in self.caches_array:
info = cache_class(filename, data)
info_array.append(info)
infos.append((virtualfn, info_array))
return infos
def loadCached(self, filename, appends):
"""Obtain the recipe information for the specified filename,
using cached values.
"""
infos = []
# info_array item is a list of [CoreRecipeInfo, XXXRecipeInfo]
info_array = self.depends_cache[filename]
for variant in info_array[0].variants:
virtualfn = variant2virtual(filename, variant)
infos.append((virtualfn, self.depends_cache[virtualfn]))
return infos
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)
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.
"""
self.checked.add(fn)
# File isn't in depends_cache
if not fn in self.depends_cache:
self.logger.debug2("%s is not cached", fn)
return False
mtime = bb.parse.cached_mtime_noerror(fn)
# Check file still exists
if mtime == 0:
self.logger.debug2("%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:
self.logger.debug2("%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:
self.logger.debug2("%s's dependency %s was removed",
fn, f)
self.remove(fn)
return False
if (fmtime != old_mtime):
self.logger.debug2("%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()
if not fl:
continue
# Have to be careful about spaces and colons in filenames
flist = self.filelist_regex.split(fl)
for f in flist:
if not f:
continue
f, exist = f.rsplit(":", 1)
if (exist == "True" and not os.path.exists(f)) or (exist == "False" and os.path.exists(f)):
self.logger.debug2("%s's file checksum list file %s changed",
fn, f)
self.remove(fn)
return False
if tuple(appends) != tuple(info_array[0].appends):
self.logger.debug2("appends for %s changed", fn)
self.logger.debug2("%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 = variant2virtual(fn, cls)
self.clean.add(virtualfn)
if virtualfn not in self.depends_cache:
self.logger.debug2("%s is not cached", virtualfn)
invalid = True
elif len(self.depends_cache[virtualfn]) != len(self.caches_array):
self.logger.debug2("Extra caches missing for %s?" % 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 = variant2virtual(fn, cls)
if virtualfn in self.clean:
self.logger.debug2("Removing %s from cache", virtualfn)
self.clean.remove(virtualfn)
if fn in self.clean:
self.logger.debug2("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:
self.logger.debug("Removing %s from cache", fn)
del self.depends_cache[fn]
if fn in self.clean:
self.logger.debug("Marking %s as unclean", fn)
self.clean.remove(fn)
def sync(self):
"""
Save the cache
Called from the parser when complete (or exiting)
"""
if self.cacheclean:
self.logger.debug2("Cache is clean, not saving.")
return
for cache_class in self.caches_array:
cache_class_name = cache_class.__name__
cachefile = self.getCacheFile(cache_class.cachefile)
self.logger.debug2("Writing %s", cachefile)
with open(cachefile, "wb") as f:
p = pickle.Pickler(f, pickle.HIGHEST_PROTOCOL)
p.dump(__cache_version__)
p.dump(bb.__version__)
for key, info_array in self.depends_cache.items():
for info in info_array:
if isinstance(info, RecipeInfoCommon) and info.__class__.__name__ == cache_class_name:
p.dump(key)
p.dump(info)
del self.depends_cache
SiggenRecipeInfo.reset()
@staticmethod
def mtime(cachefile):
return bb.parse.cached_mtime_noerror(cachefile)
def add_info(self, filename, info_array, cacheData, parsed=None, watcher=None):
if self.mc is not None:
(fn, cls, mc) = virtualfn2realfn(filename)
if mc:
self.logger.error("Unexpected multiconfig %s", filename)
return
vfn = realfn2virtual(fn, cls, self.mc)
else:
vfn = filename
if isinstance(info_array[0], CoreRecipeInfo) and (not info_array[0].skipped):
cacheData.add_from_recipeinfo(vfn, info_array)
if watcher:
watcher(info_array[0].file_depends)
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
class MulticonfigCache(Mapping):
def __init__(self, databuilder, data_hash, caches_array):
def progress(p):
nonlocal current_progress
nonlocal previous_progress
nonlocal previous_percent
nonlocal cachesize
current_progress = previous_progress + p
if current_progress > cachesize:
# we might have calculated incorrect total size because a file
# might've been written out just after we checked its size
cachesize = current_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),
databuilder.data)
cachesize = 0
current_progress = 0
previous_progress = 0
previous_percent = 0
self.__caches = {}
for mc, mcdata in databuilder.mcdata.items():
self.__caches[mc] = Cache(databuilder, mc, data_hash, caches_array)
cachesize += self.__caches[mc].cachesize()
bb.event.fire(bb.event.CacheLoadStarted(cachesize), databuilder.data)
loaded = 0
for c in self.__caches.values():
SiggenRecipeInfo.reset()
loaded += c.prepare_cache(progress)
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, loaded), databuilder.data)
def __len__(self):
return len(self.__caches)
def __getitem__(self, key):
return self.__caches[key]
def __contains__(self, key):
return key in self.__caches
def __iter__(self):
for k in self.__caches:
yield k
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 not issubclass(cache_class, RecipeInfoCommon):
bb.error("Extra cache data class %s should subclass RecipeInfoCommon class" % cache_class)
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, cache_file_name=None):
cachedir = (d.getVar("PERSISTENT_DIR") or
d.getVar("CACHE"))
if cachedir in [None, '']:
return
bb.utils.mkdirhier(cachedir)
self.cachefile = os.path.join(cachedir,
cache_file_name or self.__class__.cache_file_name)
logger.debug("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):
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):
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)
class SimpleCache(object):
"""
BitBake multi-process cache implementation
Used by the codeparser & file checksum caches
"""
def __init__(self, version):
self.cachefile = None
self.cachedata = None
self.cacheversion = version
def init_cache(self, d, cache_file_name=None, defaultdata=None):
cachedir = (d.getVar("PERSISTENT_DIR") or
d.getVar("CACHE"))
if not cachedir:
return defaultdata
bb.utils.mkdirhier(cachedir)
self.cachefile = os.path.join(cachedir,
cache_file_name or self.__class__.cache_file_name)
logger.debug("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 defaultdata
bb.utils.unlockfile(glf)
if version != self.cacheversion:
return defaultdata
return data
def save(self, data):
if not self.cachefile:
return
glf = bb.utils.lockfile(self.cachefile + ".lock")
with open(self.cachefile, "wb") as f:
p = pickle.Pickler(f, -1)
p.dump([data, self.cacheversion])
bb.utils.unlockfile(glf)
def copyfile(self, target):
if not self.cachefile:
return
glf = bb.utils.lockfile(self.cachefile + ".lock")
shutil.copy(self.cachefile, target)
bb.utils.unlockfile(glf)