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Diffstat (limited to 'bitbake/lib/bb/cache.py')
| -rw-r--r-- | bitbake/lib/bb/cache.py | 433 |
1 files changed, 0 insertions, 433 deletions
diff --git a/bitbake/lib/bb/cache.py b/bitbake/lib/bb/cache.py deleted file mode 100644 index 335b221979..0000000000 --- a/bitbake/lib/bb/cache.py +++ /dev/null @@ -1,433 +0,0 @@ -# ex:ts=4:sw=4:sts=4:et -# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- -# -# BitBake 'Event' implementation -# -# Caching of bitbake variables before task execution - -# Copyright (C) 2006 Richard Purdie - -# 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, re -import bb.data -import bb.utils -from sets import Set - -try: - import cPickle as pickle -except ImportError: - import pickle - bb.msg.note(1, bb.msg.domain.Cache, "Importing cPickle failed. Falling back to a very slow implementation.") - -__cache_version__ = "126" - -class Cache: - """ - BitBake Cache implementation - """ - def __init__(self, cooker): - - - self.cachedir = bb.data.getVar("CACHE", cooker.configuration.data, True) - self.clean = {} - self.depends_cache = {} - self.data = None - self.data_fn = None - - if self.cachedir in [None, '']: - self.has_cache = False - bb.msg.note(1, bb.msg.domain.Cache, "Not using a cache. Set CACHE = <directory> to enable.") - else: - self.has_cache = True - self.cachefile = os.path.join(self.cachedir,"bb_cache.dat") - - bb.msg.debug(1, bb.msg.domain.Cache, "Using cache in '%s'" % self.cachedir) - try: - os.stat( self.cachedir ) - except OSError: - bb.mkdirhier( self.cachedir ) - - if self.has_cache and (self.mtime(self.cachefile)): - try: - p = pickle.Unpickler( file(self.cachefile,"rb")) - self.depends_cache, version_data = p.load() - if version_data['CACHE_VER'] != __cache_version__: - raise ValueError, 'Cache Version Mismatch' - if version_data['BITBAKE_VER'] != bb.__version__: - raise ValueError, 'Bitbake Version Mismatch' - except EOFError: - bb.msg.note(1, bb.msg.domain.Cache, "Truncated cache found, rebuilding...") - self.depends_cache = {} - except (ValueError, KeyError): - bb.msg.note(1, bb.msg.domain.Cache, "Invalid cache found, rebuilding...") - self.depends_cache = {} - - if self.depends_cache: - for fn in self.depends_cache.keys(): - self.clean[fn] = "" - self.cacheValidUpdate(fn) - - def getVar(self, var, fn, exp = 0): - """ - Gets the value of a variable - (similar to getVar in the data class) - - There are two scenarios: - 1. We have cached data - serve from depends_cache[fn] - 2. We're learning what data to cache - serve from data - backend but add a copy of the data to the cache. - """ - - if fn in self.clean: - return self.depends_cache[fn][var] - - if not fn in self.depends_cache: - self.depends_cache[fn] = {} - - if fn != self.data_fn: - # We're trying to access data in the cache which doesn't exist - # yet setData hasn't been called to setup the right access. Very bad. - bb.msg.error(bb.msg.domain.Cache, "Parsing error data_fn %s and fn %s don't match" % (self.data_fn, fn)) - - result = bb.data.getVar(var, self.data, exp) - self.depends_cache[fn][var] = result - return result - - def setData(self, fn, data): - """ - Called to prime bb_cache ready to learn which variables to cache. - Will be followed by calls to self.getVar which aren't cached - but can be fulfilled from self.data. - """ - self.data_fn = fn - self.data = data - - # Make sure __depends makes the depends_cache - self.getVar("__depends", fn, True) - self.depends_cache[fn]["CACHETIMESTAMP"] = bb.parse.cached_mtime(fn) - - def loadDataFull(self, fn, cfgData): - """ - Return a complete set of data for fn. - To do this, we need to parse the file. - """ - bb_data, skipped = self.load_bbfile(fn, cfgData) - return bb_data - - def loadData(self, fn, cfgData): - """ - Load a subset of data for fn. - If the cached data is valid we do nothing, - To do this, we need to parse the file and set the system - to record the variables accessed. - Return the cache status and whether the file was skipped when parsed - """ - if self.cacheValid(fn): - if "SKIPPED" in self.depends_cache[fn]: - return True, True - return True, False - - bb_data, skipped = self.load_bbfile(fn, cfgData) - self.setData(fn, bb_data) - return False, skipped - - def cacheValid(self, fn): - """ - Is the cache valid for fn? - Fast version, no timestamps checked. - """ - # Is cache enabled? - if not self.has_cache: - return False - if fn in self.clean: - return True - return False - - def cacheValidUpdate(self, fn): - """ - Is the cache valid for fn? - Make thorough (slower) checks including timestamps. - """ - # Is cache enabled? - if not self.has_cache: - return False - - # Check file still exists - if self.mtime(fn) == 0: - bb.msg.debug(2, bb.msg.domain.Cache, "Cache: %s not longer exists" % fn) - self.remove(fn) - return False - - # File isn't in depends_cache - if not fn in self.depends_cache: - bb.msg.debug(2, bb.msg.domain.Cache, "Cache: %s is not cached" % fn) - self.remove(fn) - return False - - # Check the file's timestamp - if bb.parse.cached_mtime(fn) > self.getVar("CACHETIMESTAMP", fn, True): - bb.msg.debug(2, bb.msg.domain.Cache, "Cache: %s changed" % fn) - self.remove(fn) - return False - - # Check dependencies are still valid - depends = self.getVar("__depends", fn, True) - for f,old_mtime in depends: - # Check if file still exists - if self.mtime(f) == 0: - return False - - new_mtime = bb.parse.cached_mtime(f) - if (new_mtime > old_mtime): - bb.msg.debug(2, bb.msg.domain.Cache, "Cache: %s's dependency %s changed" % (fn, f)) - self.remove(fn) - return False - - bb.msg.debug(2, bb.msg.domain.Cache, "Depends Cache: %s is clean" % fn) - if not fn in self.clean: - self.clean[fn] = "" - - return True - - def skip(self, fn): - """ - Mark a fn as skipped - Called from the parser - """ - if not fn in self.depends_cache: - self.depends_cache[fn] = {} - self.depends_cache[fn]["SKIPPED"] = "1" - - def remove(self, fn): - """ - Remove a fn from the cache - Called from the parser in error cases - """ - bb.msg.debug(1, bb.msg.domain.Cache, "Removing %s from cache" % fn) - if fn in self.depends_cache: - del self.depends_cache[fn] - if fn in self.clean: - del self.clean[fn] - - def sync(self): - """ - Save the cache - Called from the parser when complete (or exiting) - """ - - if not self.has_cache: - return - - version_data = {} - version_data['CACHE_VER'] = __cache_version__ - version_data['BITBAKE_VER'] = bb.__version__ - - p = pickle.Pickler(file(self.cachefile, "wb" ), -1 ) - p.dump([self.depends_cache, version_data]) - - def mtime(self, cachefile): - return bb.parse.cached_mtime_noerror(cachefile) - - def handle_data(self, file_name, cacheData): - """ - Save data we need into the cache - """ - - pn = self.getVar('PN', file_name, True) - pe = self.getVar('PE', file_name, True) or "0" - pv = self.getVar('PV', file_name, True) - pr = self.getVar('PR', file_name, True) - dp = int(self.getVar('DEFAULT_PREFERENCE', file_name, True) or "0") - provides = Set([pn] + (self.getVar("PROVIDES", file_name, True) or "").split()) - depends = bb.utils.explode_deps(self.getVar("DEPENDS", file_name, True) or "") - packages = (self.getVar('PACKAGES', file_name, True) or "").split() - packages_dynamic = (self.getVar('PACKAGES_DYNAMIC', file_name, True) or "").split() - rprovides = (self.getVar("RPROVIDES", file_name, True) or "").split() - - cacheData.task_queues[file_name] = self.getVar("_task_graph", file_name, True) - cacheData.task_deps[file_name] = self.getVar("_task_deps", file_name, True) - - # build PackageName to FileName lookup table - if pn not in cacheData.pkg_pn: - cacheData.pkg_pn[pn] = [] - cacheData.pkg_pn[pn].append(file_name) - - cacheData.stamp[file_name] = self.getVar('STAMP', file_name, True) - - # build FileName to PackageName lookup table - cacheData.pkg_fn[file_name] = pn - cacheData.pkg_pepvpr[file_name] = (pe,pv,pr) - cacheData.pkg_dp[file_name] = dp - - # Build forward and reverse provider hashes - # Forward: virtual -> [filenames] - # Reverse: PN -> [virtuals] - if pn not in cacheData.pn_provides: - cacheData.pn_provides[pn] = Set() - cacheData.pn_provides[pn] |= provides - - for provide in provides: - if provide not in cacheData.providers: - cacheData.providers[provide] = [] - cacheData.providers[provide].append(file_name) - - cacheData.deps[file_name] = Set() - for dep in depends: - cacheData.all_depends.add(dep) - cacheData.deps[file_name].add(dep) - - # Build reverse hash for PACKAGES, so runtime dependencies - # can be be resolved (RDEPENDS, RRECOMMENDS etc.) - for package in packages: - if not package in cacheData.packages: - cacheData.packages[package] = [] - cacheData.packages[package].append(file_name) - rprovides += (self.getVar("RPROVIDES_%s" % package, file_name, 1) or "").split() - - for package in packages_dynamic: - if not package in cacheData.packages_dynamic: - cacheData.packages_dynamic[package] = [] - cacheData.packages_dynamic[package].append(file_name) - - for rprovide in rprovides: - if not rprovide in cacheData.rproviders: - cacheData.rproviders[rprovide] = [] - cacheData.rproviders[rprovide].append(file_name) - - # Build hash of runtime depends and rececommends - - def add_dep(deplist, deps): - for dep in deps: - if not dep in deplist: - deplist[dep] = "" - - if not file_name in cacheData.rundeps: - cacheData.rundeps[file_name] = {} - if not file_name in cacheData.runrecs: - cacheData.runrecs[file_name] = {} - - for package in packages + [pn]: - if not package in cacheData.rundeps[file_name]: - cacheData.rundeps[file_name][package] = {} - if not package in cacheData.runrecs[file_name]: - cacheData.runrecs[file_name][package] = {} - - add_dep(cacheData.rundeps[file_name][package], bb.utils.explode_deps(self.getVar('RDEPENDS', file_name, True) or "")) - add_dep(cacheData.runrecs[file_name][package], bb.utils.explode_deps(self.getVar('RRECOMMENDS', file_name, True) or "")) - add_dep(cacheData.rundeps[file_name][package], bb.utils.explode_deps(self.getVar("RDEPENDS_%s" % package, file_name, True) or "")) - add_dep(cacheData.runrecs[file_name][package], bb.utils.explode_deps(self.getVar("RRECOMMENDS_%s" % package, file_name, True) or "")) - - # Collect files we may need for possible world-dep - # calculations - if not self.getVar('BROKEN', file_name, True) and not self.getVar('EXCLUDE_FROM_WORLD', file_name, True): - cacheData.possible_world.append(file_name) - - - def load_bbfile( self, bbfile , config): - """ - Load and parse one .bb build file - Return the data and whether parsing resulted in the file being skipped - """ - - import bb - from bb import utils, data, parse, debug, event, fatal - - # expand tmpdir to include this topdir - data.setVar('TMPDIR', data.getVar('TMPDIR', config, 1) or "", config) - bbfile_loc = os.path.abspath(os.path.dirname(bbfile)) - oldpath = os.path.abspath(os.getcwd()) - if self.mtime(bbfile_loc): - os.chdir(bbfile_loc) - bb_data = data.init_db(config) - try: - bb_data = parse.handle(bbfile, bb_data) # read .bb data - os.chdir(oldpath) - return bb_data, False - except bb.parse.SkipPackage: - os.chdir(oldpath) - return bb_data, True - except: - 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.SkipPackage exception - - Files causing parsing errors are evicted from the cache. - - """ - return Cache(cooker) - - - -#============================================================================# -# CacheData -#============================================================================# -class CacheData: - """ - The data structures we compile from the cached data - """ - - def __init__(self): - """ - Direct cache variables - (from Cache.handle_data) - """ - self.providers = {} - self.rproviders = {} - self.packages = {} - self.packages_dynamic = {} - self.possible_world = [] - self.pkg_pn = {} - self.pkg_fn = {} - self.pkg_pepvpr = {} - self.pkg_dp = {} - self.pn_provides = {} - self.all_depends = Set() - self.deps = {} - self.rundeps = {} - self.runrecs = {} - self.task_queues = {} - self.task_deps = {} - self.stamp = {} - self.preferred = {} - - """ - Indirect Cache variables - (set elsewhere) - """ - self.ignored_dependencies = [] - self.world_target = Set() - self.bbfile_priority = {} - self.bbfile_config_priorities = [] |