tools/buildman/control.py

   1 # Copyright (c) 2013 The Chromium OS Authors.
   2 #
   3 # SPDX-License-Identifier:      GPL-2.0+
   4 #
   5
   6 import multiprocessing
   7 import os
   8 import shutil
   9 import sys
  10
  11 import board
  12 import bsettings
  13 from builder import Builder
  14 import gitutil
  15 import patchstream
  16 import terminal
  17 from terminal import Print
  18 import toolchain
  19 import command
  20 import subprocess
  21
  22 def GetPlural(count):
  23     """Returns a plural 's' if count is not 1"""
  24     return 's' if count != 1 else ''
  25
  26 def GetActionSummary(is_summary, commits, selected, options):
  27     """Return a string summarising the intended action.
  28
  29     Returns:
  30         Summary string.
  31     """
  32     if commits:
  33         count = len(commits)
  34         count = (count + options.step - 1) / options.step
  35         commit_str = '%d commit%s' % (count, GetPlural(count))
  36     else:
  37         commit_str = 'current source'
  38     str = '%s %s for %d boards' % (
  39         'Summary of' if is_summary else 'Building', commit_str,
  40         len(selected))
  41     str += ' (%d thread%s, %d job%s per thread)' % (options.threads,
  42             GetPlural(options.threads), options.jobs, GetPlural(options.jobs))
  43     return str
  44
  45 def ShowActions(series, why_selected, boards_selected, builder, options):
  46     """Display a list of actions that we would take, if not a dry run.
  47
  48     Args:
  49         series: Series object
  50         why_selected: Dictionary where each key is a buildman argument
  51                 provided by the user, and the value is the boards brought
  52                 in by that argument. For example, 'arm' might bring in
  53                 400 boards, so in this case the key would be 'arm' and
  54                 the value would be a list of board names.
  55         boards_selected: Dict of selected boards, key is target name,
  56                 value is Board object
  57         builder: The builder that will be used to build the commits
  58         options: Command line options object
  59     """
  60     col = terminal.Color()
  61     print 'Dry run, so not doing much. But I would do this:'
  62     print
  63     if series:
  64         commits = series.commits
  65     else:
  66         commits = None
  67     print GetActionSummary(False, commits, boards_selected,
  68             options)
  69     print 'Build directory: %s' % builder.base_dir
  70     if commits:
  71         for upto in range(0, len(series.commits), options.step):
  72             commit = series.commits[upto]
  73             print '   ', col.Color(col.YELLOW, commit.hash[:8], bright=False),
  74             print commit.subject
  75     print
  76     for arg in why_selected:
  77         if arg != 'all':
  78             print arg, ': %d boards' % why_selected[arg]
  79     print ('Total boards to build for each commit: %d\n' %
  80             why_selected['all'])
  81
  82 def DoBuildman(options, args, toolchains=None, make_func=None, boards=None,
  83                clean_dir=False):
  84     """The main control code for buildman
  85
  86     Args:
  87         options: Command line options object
  88         args: Command line arguments (list of strings)
  89         toolchains: Toolchains to use - this should be a Toolchains()
  90                 object. If None, then it will be created and scanned
  91         make_func: Make function to use for the builder. This is called
  92                 to execute 'make'. If this is None, the normal function
  93                 will be used, which calls the 'make' tool with suitable
  94                 arguments. This setting is useful for tests.
  95         board: Boards() object to use, containing a list of available
  96                 boards. If this is None it will be created and scanned.
  97     """
  98     global builder
  99
 100     if options.full_help:
 101         pager = os.getenv('PAGER')
 102         if not pager:
 103             pager = 'more'
 104         fname = os.path.join(os.path.dirname(sys.argv[0]), 'README')
 105         command.Run(pager, fname)
 106         return 0
 107
 108     gitutil.Setup()
 109
 110     options.git_dir = os.path.join(options.git, '.git')
 111
 112     if not toolchains:
 113         toolchains = toolchain.Toolchains()
 114         toolchains.GetSettings()
 115         toolchains.Scan(options.list_tool_chains)
 116     if options.list_tool_chains:
 117         toolchains.List()
 118         print
 119         return 0
 120
 121     # Work out how many commits to build. We want to build everything on the
 122     # branch. We also build the upstream commit as a control so we can see
 123     # problems introduced by the first commit on the branch.
 124     col = terminal.Color()
 125     count = options.count
 126     if count == -1:
 127         if not options.branch:
 128             count = 1
 129         else:
 130             count, msg = gitutil.CountCommitsInBranch(options.git_dir,
 131                                                       options.branch)
 132             if count is None:
 133                 sys.exit(col.Color(col.RED, msg))
 134             if msg:
 135                 print col.Color(col.YELLOW, msg)
 136             count += 1   # Build upstream commit also
 137
 138     if not count:
 139         str = ("No commits found to process in branch '%s': "
 140                "set branch's upstream or use -c flag" % options.branch)
 141         sys.exit(col.Color(col.RED, str))
 142
 143     # Work out what subset of the boards we are building
 144     if not boards:
 145         board_file = os.path.join(options.git, 'boards.cfg')
 146         status = subprocess.call([os.path.join(options.git,
 147                                                 'tools/genboardscfg.py')])
 148         if status != 0:
 149                 sys.exit("Failed to generate boards.cfg")
 150
 151         boards = board.Boards()
 152         boards.ReadBoards(os.path.join(options.git, 'boards.cfg'))
 153
 154     exclude = []
 155     if options.exclude:
 156         for arg in options.exclude:
 157             exclude += arg.split(',')
 158
 159     why_selected = boards.SelectBoards(args, exclude)
 160     selected = boards.GetSelected()
 161     if not len(selected):
 162         sys.exit(col.Color(col.RED, 'No matching boards found'))
 163
 164     # Read the metadata from the commits. First look at the upstream commit,
 165     # then the ones in the branch. We would like to do something like
 166     # upstream/master~..branch but that isn't possible if upstream/master is
 167     # a merge commit (it will list all the commits that form part of the
 168     # merge)
 169     # Conflicting tags are not a problem for buildman, since it does not use
 170     # them. For example, Series-version is not useful for buildman. On the
 171     # other hand conflicting tags will cause an error. So allow later tags
 172     # to overwrite earlier ones by setting allow_overwrite=True
 173     if options.branch:
 174         if count == -1:
 175             range_expr = gitutil.GetRangeInBranch(options.git_dir,
 176                                                   options.branch)
 177             upstream_commit = gitutil.GetUpstream(options.git_dir,
 178                                                   options.branch)
 179             series = patchstream.GetMetaDataForList(upstream_commit,
 180                 options.git_dir, 1, series=None, allow_overwrite=True)
 181
 182             series = patchstream.GetMetaDataForList(range_expr,
 183                     options.git_dir, None, series, allow_overwrite=True)
 184         else:
 185             # Honour the count
 186             series = patchstream.GetMetaDataForList(options.branch,
 187                     options.git_dir, count, series=None, allow_overwrite=True)
 188     else:
 189         series = None
 190         options.verbose = True
 191         if not options.summary:
 192             options.show_errors = True
 193
 194     # By default we have one thread per CPU. But if there are not enough jobs
 195     # we can have fewer threads and use a high '-j' value for make.
 196     if not options.threads:
 197         options.threads = min(multiprocessing.cpu_count(), len(selected))
 198     if not options.jobs:
 199         options.jobs = max(1, (multiprocessing.cpu_count() +
 200                 len(selected) - 1) / len(selected))
 201
 202     if not options.step:
 203         options.step = len(series.commits) - 1
 204
 205     gnu_make = command.Output(os.path.join(options.git,
 206                                            'scripts/show-gnu-make')).rstrip()
 207     if not gnu_make:
 208         sys.exit('GNU Make not found')
 209
 210     # Create a new builder with the selected options.
 211     output_dir = options.output_dir
 212     if options.branch:
 213         dirname = options.branch.replace('/', '_')
 214         # As a special case allow the board directory to be placed in the
 215         # output directory itself rather than any subdirectory.
 216         if not options.no_subdirs:
 217             output_dir = os.path.join(options.output_dir, dirname)
 218     if (clean_dir and output_dir != options.output_dir and
 219             os.path.exists(output_dir)):
 220         shutil.rmtree(output_dir)
 221     builder = Builder(toolchains, output_dir, options.git_dir,
 222             options.threads, options.jobs, gnu_make=gnu_make, checkout=True,
 223             show_unknown=options.show_unknown, step=options.step,
 224             no_subdirs=options.no_subdirs)
 225     builder.force_config_on_failure = not options.quick
 226     if make_func:
 227         builder.do_make = make_func
 228
 229     # For a dry run, just show our actions as a sanity check
 230     if options.dry_run:
 231         ShowActions(series, why_selected, selected, builder, options)
 232     else:
 233         builder.force_build = options.force_build
 234         builder.force_build_failures = options.force_build_failures
 235         builder.force_reconfig = options.force_reconfig
 236         builder.in_tree = options.in_tree
 237
 238         # Work out which boards to build
 239         board_selected = boards.GetSelectedDict()
 240
 241         if series:
 242             commits = series.commits
 243             # Number the commits for test purposes
 244             for commit in range(len(commits)):
 245                 commits[commit].sequence = commit
 246         else:
 247             commits = None
 248
 249         Print(GetActionSummary(options.summary, commits, board_selected,
 250                                 options))
 251
 252         # We can't show function sizes without board details at present
 253         if options.show_bloat:
 254             options.show_detail = True
 255         builder.SetDisplayOptions(options.show_errors, options.show_sizes,
 256                                   options.show_detail, options.show_bloat,
 257                                   options.list_error_boards)
 258         if options.summary:
 259             builder.ShowSummary(commits, board_selected)
 260         else:
 261             fail, warned = builder.BuildBoards(commits, board_selected,
 262                                 options.keep_outputs, options.verbose)
 263             if fail:
 264                 return 128
 265             elif warned:
 266                 return 129
 267     return 0