run-deopt-fuzzer.py 16.5 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
#!/usr/bin/env python
#
# Copyright 2012 the V8 project authors. All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#     * Neither the name of Google Inc. nor the names of its
#       contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


import json
import math
import multiprocessing
import optparse
import os
from os.path import join
import random
import shlex
import subprocess
import sys
import time

from testrunner.local import execution
from testrunner.local import progress
from testrunner.local import testsuite
from testrunner.local import utils
from testrunner.local import verbose
from testrunner.objects import context


ARCH_GUESS = utils.DefaultArch()
52
DEFAULT_TESTS = ["mjsunit", "webkit"]
53 54 55 56 57
TIMEOUT_DEFAULT = 60
TIMEOUT_SCALEFACTOR = {"debug"   : 4,
                       "release" : 1 }

MODE_FLAGS = {
58
    "debug"   : ["--nohard-abort", "--nodead-code-elimination",
59 60
                 "--nofold-constants", "--enable-slow-asserts",
                 "--debug-code", "--verify-heap",
61
                 "--noconcurrent-recompilation"],
62
    "release" : ["--nohard-abort", "--nodead-code-elimination",
63
                 "--nofold-constants", "--noconcurrent-recompilation"]}
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156

SUPPORTED_ARCHS = ["android_arm",
                   "android_ia32",
                   "arm",
                   "ia32",
                   "mipsel",
                   "nacl_ia32",
                   "nacl_x64",
                   "x64"]
# Double the timeout for these:
SLOW_ARCHS = ["android_arm",
              "android_ia32",
              "arm",
              "mipsel",
              "nacl_ia32",
              "nacl_x64"]
MAX_DEOPT = 1000000000
DISTRIBUTION_MODES = ["smooth", "random"]


class RandomDistribution:
  def __init__(self, seed=None):
    seed = seed or random.randint(1, sys.maxint)
    print "Using random distribution with seed %d" % seed
    self._random = random.Random(seed)

  def Distribute(self, n, m):
    if n > m:
      n = m
    return self._random.sample(xrange(1, m + 1), n)


class SmoothDistribution:
  """Distribute n numbers into the interval [1:m].
  F1: Factor of the first derivation of the distribution function.
  F2: Factor of the second derivation of the distribution function.
  With F1 and F2 set to 0, the distribution will be equal.
  """
  def __init__(self, factor1=2.0, factor2=0.2):
    self._factor1 = factor1
    self._factor2 = factor2

  def Distribute(self, n, m):
    if n > m:
      n = m
    if n <= 1:
      return [ 1 ]

    result = []
    x = 0.0
    dx = 1.0
    ddx = self._factor1
    dddx = self._factor2
    for i in range(0, n):
      result += [ x ]
      x += dx
      dx += ddx
      ddx += dddx

    # Project the distribution into the interval [0:M].
    result = [ x * m / result[-1] for x in result ]

    # Equalize by n. The closer n is to m, the more equal will be the
    # distribution.
    for (i, x) in enumerate(result):
      # The value of x if it was equally distributed.
      equal_x = i / float(n - 1) * float(m - 1) + 1

      # Difference factor between actual and equal distribution.
      diff = 1 - (x / equal_x)

      # Equalize x dependent on the number of values to distribute.
      result[i] = int(x + (i + 1) * diff)
    return result


def Distribution(options):
  if options.distribution_mode == "random":
    return RandomDistribution(options.seed)
  if options.distribution_mode == "smooth":
    return SmoothDistribution(options.distribution_factor1,
                              options.distribution_factor2)


def BuildOptions():
  result = optparse.OptionParser()
  result.add_option("--arch",
                    help=("The architecture to run tests for, "
                          "'auto' or 'native' for auto-detect"),
                    default="ia32,x64,arm")
  result.add_option("--arch-and-mode",
                    help="Architecture and mode in the format 'arch.mode'",
                    default=None)
157 158 159
  result.add_option("--asan",
                    help="Regard test expectations for ASAN",
                    default=False, action="store_true")
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215
  result.add_option("--buildbot",
                    help="Adapt to path structure used on buildbots",
                    default=False, action="store_true")
  result.add_option("--command-prefix",
                    help="Prepended to each shell command used to run a test",
                    default="")
  result.add_option("--coverage", help=("Exponential test coverage "
                    "(range 0.0, 1.0) -- 0.0: one test, 1.0 all tests (slow)"),
                    default=0.4, type="float")
  result.add_option("--coverage-lift", help=("Lifts test coverage for tests "
                    "with a small number of deopt points (range 0, inf)"),
                    default=20, type="int")
  result.add_option("--download-data", help="Download missing test suite data",
                    default=False, action="store_true")
  result.add_option("--distribution-factor1", help=("Factor of the first "
                    "derivation of the distribution function"), default=2.0,
                    type="float")
  result.add_option("--distribution-factor2", help=("Factor of the second "
                    "derivation of the distribution function"), default=0.7,
                    type="float")
  result.add_option("--distribution-mode", help=("How to select deopt points "
                    "for a given test (smooth|random)"),
                    default="smooth")
  result.add_option("--dump-results-file", help=("Dump maximum number of "
                    "deopt points per test to a file"))
  result.add_option("--extra-flags",
                    help="Additional flags to pass to each test command",
                    default="")
  result.add_option("--isolates", help="Whether to test isolates",
                    default=False, action="store_true")
  result.add_option("-j", help="The number of parallel tasks to run",
                    default=0, type="int")
  result.add_option("-m", "--mode",
                    help="The test modes in which to run (comma-separated)",
                    default="release,debug")
  result.add_option("--outdir", help="Base directory with compile output",
                    default="out")
  result.add_option("-p", "--progress",
                    help=("The style of progress indicator"
                          " (verbose, dots, color, mono)"),
                    choices=progress.PROGRESS_INDICATORS.keys(),
                    default="mono")
  result.add_option("--shard-count",
                    help="Split testsuites into this number of shards",
                    default=1, type="int")
  result.add_option("--shard-run",
                    help="Run this shard from the split up tests.",
                    default=1, type="int")
  result.add_option("--shell-dir", help="Directory containing executables",
                    default="")
  result.add_option("--seed", help="The seed for the random distribution",
                    type="int")
  result.add_option("-t", "--timeout", help="Timeout in seconds",
                    default= -1, type="int")
  result.add_option("-v", "--verbose", help="Verbose output",
                    default=False, action="store_true")
216 217
  result.add_option("--random-seed", default=0, dest="random_seed",
                    help="Default seed for initializing random generator")
218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246
  return result


def ProcessOptions(options):
  global VARIANT_FLAGS

  # Architecture and mode related stuff.
  if options.arch_and_mode:
    tokens = options.arch_and_mode.split(".")
    options.arch = tokens[0]
    options.mode = tokens[1]
  options.mode = options.mode.split(",")
  for mode in options.mode:
    if not mode.lower() in ["debug", "release"]:
      print "Unknown mode %s" % mode
      return False
  if options.arch in ["auto", "native"]:
    options.arch = ARCH_GUESS
  options.arch = options.arch.split(",")
  for arch in options.arch:
    if not arch in SUPPORTED_ARCHS:
      print "Unknown architecture %s" % arch
      return False

  # Special processing of other options, sorted alphabetically.
  options.command_prefix = shlex.split(options.command_prefix)
  options.extra_flags = shlex.split(options.extra_flags)
  if options.j == 0:
    options.j = multiprocessing.cpu_count()
247 248
  while options.random_seed == 0:
    options.random_seed = random.SystemRandom().randint(-2147483648, 2147483647)
249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321
  if not options.distribution_mode in DISTRIBUTION_MODES:
    print "Unknown distribution mode %s" % options.distribution_mode
    return False
  if options.distribution_factor1 < 0.0:
    print ("Distribution factor1 %s is out of range. Defaulting to 0.0"
        % options.distribution_factor1)
    options.distribution_factor1 = 0.0
  if options.distribution_factor2 < 0.0:
    print ("Distribution factor2 %s is out of range. Defaulting to 0.0"
        % options.distribution_factor2)
    options.distribution_factor2 = 0.0
  if options.coverage < 0.0 or options.coverage > 1.0:
    print ("Coverage %s is out of range. Defaulting to 0.4"
        % options.coverage)
    options.coverage = 0.4
  if options.coverage_lift < 0:
    print ("Coverage lift %s is out of range. Defaulting to 0"
        % options.coverage_lift)
    options.coverage_lift = 0
  return True


def ShardTests(tests, shard_count, shard_run):
  if shard_count < 2:
    return tests
  if shard_run < 1 or shard_run > shard_count:
    print "shard-run not a valid number, should be in [1:shard-count]"
    print "defaulting back to running all tests"
    return tests
  count = 0
  shard = []
  for test in tests:
    if count % shard_count == shard_run - 1:
      shard.append(test)
    count += 1
  return shard


def Main():
  parser = BuildOptions()
  (options, args) = parser.parse_args()
  if not ProcessOptions(options):
    parser.print_help()
    return 1

  exit_code = 0
  workspace = os.path.abspath(join(os.path.dirname(sys.argv[0]), ".."))

  suite_paths = utils.GetSuitePaths(join(workspace, "test"))

  if len(args) == 0:
    suite_paths = [ s for s in suite_paths if s in DEFAULT_TESTS ]
  else:
    args_suites = set()
    for arg in args:
      suite = arg.split(os.path.sep)[0]
      if not suite in args_suites:
        args_suites.add(suite)
    suite_paths = [ s for s in suite_paths if s in args_suites ]

  suites = []
  for root in suite_paths:
    suite = testsuite.TestSuite.LoadTestSuite(
        os.path.join(workspace, "test", root))
    if suite:
      suites.append(suite)

  if options.download_data:
    for s in suites:
      s.DownloadData()

  for mode in options.mode:
    for arch in options.arch:
322 323 324 325 326
      try:
        code = Execute(arch, mode, args, options, suites, workspace)
        exit_code = exit_code or code
      except KeyboardInterrupt:
        return 2
327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370
  return exit_code


def CalculateNTests(m, options):
  """Calculates the number of tests from m deopt points with exponential
  coverage.
  The coverage is expected to be between 0.0 and 1.0.
  The 'coverage lift' lifts the coverage for tests with smaller m values.
  """
  c = float(options.coverage)
  l = float(options.coverage_lift)
  return int(math.pow(m, (m * c + l) / (m + l)))


def Execute(arch, mode, args, options, suites, workspace):
  print(">>> Running tests for %s.%s" % (arch, mode))

  dist = Distribution(options)

  shell_dir = options.shell_dir
  if not shell_dir:
    if options.buildbot:
      shell_dir = os.path.join(workspace, options.outdir, mode)
      mode = mode.lower()
    else:
      shell_dir = os.path.join(workspace, options.outdir,
                               "%s.%s" % (arch, mode))
  shell_dir = os.path.relpath(shell_dir)

  # Populate context object.
  mode_flags = MODE_FLAGS[mode]
  timeout = options.timeout
  if timeout == -1:
    # Simulators are slow, therefore allow a longer default timeout.
    if arch in SLOW_ARCHS:
      timeout = 2 * TIMEOUT_DEFAULT;
    else:
      timeout = TIMEOUT_DEFAULT;

  timeout *= TIMEOUT_SCALEFACTOR[mode]
  ctx = context.Context(arch, mode, shell_dir,
                        mode_flags, options.verbose,
                        timeout, options.isolates,
                        options.command_prefix,
371
                        options.extra_flags,
372
                        False,  # Keep i18n on by default.
373
                        options.random_seed,
374 375
                        True,  # No sorting of test cases.
                        0,  # Don't rerun failing tests.
376 377
                        0,  # No use of a rerun-failing-tests maximum.
                        False)  # No predictable mode.
378 379 380 381

  # Find available test suites and read test cases from them.
  variables = {
    "arch": arch,
382
    "asan": options.asan,
383
    "deopt_fuzzer": True,
384 385 386
    "gc_stress": False,
    "isolates": options.isolates,
    "mode": mode,
387
    "no_i18n": False,
388
    "no_snap": False,
389
    "simulator": utils.UseSimulator(arch),
390
    "system": utils.GuessOS(),
391
    "tsan": False,
392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419
  }
  all_tests = []
  num_tests = 0
  test_id = 0

  # Remember test case prototypes for the fuzzing phase.
  test_backup = dict((s, []) for s in suites)

  for s in suites:
    s.ReadStatusFile(variables)
    s.ReadTestCases(ctx)
    if len(args) > 0:
      s.FilterTestCasesByArgs(args)
    all_tests += s.tests
    s.FilterTestCasesByStatus(False)
    test_backup[s] = s.tests
    analysis_flags = ["--deopt-every-n-times", "%d" % MAX_DEOPT,
                      "--print-deopt-stress"]
    s.tests = [ t.CopyAddingFlags(analysis_flags) for t in s.tests ]
    num_tests += len(s.tests)
    for t in s.tests:
      t.id = test_id
      test_id += 1

  if num_tests == 0:
    print "No tests to run."
    return 0

420 421 422
  print(">>> Collection phase")
  progress_indicator = progress.PROGRESS_INDICATORS[options.progress]()
  runner = execution.Runner(suites, progress_indicator, ctx)
423

424
  exit_code = runner.Run(options.j)
425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466

  print(">>> Analysis phase")
  num_tests = 0
  test_id = 0
  for s in suites:
    test_results = {}
    for t in s.tests:
      for line in t.output.stdout.splitlines():
        if line.startswith("=== Stress deopt counter: "):
          test_results[t.path] = MAX_DEOPT - int(line.split(" ")[-1])
    for t in s.tests:
      if t.path not in test_results:
        print "Missing results for %s" % t.path
    if options.dump_results_file:
      results_dict = dict((t.path, n) for (t, n) in test_results.iteritems())
      with file("%s.%d.txt" % (dump_results_file, time.time()), "w") as f:
        f.write(json.dumps(results_dict))

    # Reset tests and redistribute the prototypes from the collection phase.
    s.tests = []
    if options.verbose:
      print "Test distributions:"
    for t in test_backup[s]:
      max_deopt = test_results.get(t.path, 0)
      if max_deopt == 0:
        continue
      n_deopt = CalculateNTests(max_deopt, options)
      distribution = dist.Distribute(n_deopt, max_deopt)
      if options.verbose:
        print "%s %s" % (t.path, distribution)
      for i in distribution:
        fuzzing_flags = ["--deopt-every-n-times", "%d" % i]
        s.tests.append(t.CopyAddingFlags(fuzzing_flags))
    num_tests += len(s.tests)
    for t in s.tests:
      t.id = test_id
      test_id += 1

  if num_tests == 0:
    print "No tests to run."
    return 0

467 468 469
  print(">>> Deopt fuzzing phase (%d test cases)" % num_tests)
  progress_indicator = progress.PROGRESS_INDICATORS[options.progress]()
  runner = execution.Runner(suites, progress_indicator, ctx)
470

471 472
  code = runner.Run(options.j)
  return exit_code or code
473 474 475 476


if __name__ == "__main__":
  sys.exit(Main())