| # Copyright 2015, Google Inc. |
| # 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. |
| |
| """Run a group of subprocesses and then finish.""" |
| |
| import multiprocessing |
| import os |
| import platform |
| import re |
| import signal |
| import subprocess |
| import sys |
| import tempfile |
| import time |
| |
| |
| # cpu cost measurement |
| measure_cpu_costs = False |
| |
| |
| _DEFAULT_MAX_JOBS = 16 * multiprocessing.cpu_count() |
| _MAX_RESULT_SIZE = 8192 |
| |
| def sanitized_environment(env): |
| sanitized = {} |
| for key, value in env.items(): |
| sanitized[str(key).encode()] = str(value).encode() |
| return sanitized |
| |
| def platform_string(): |
| if platform.system() == 'Windows': |
| return 'windows' |
| elif platform.system()[:7] == 'MSYS_NT': |
| return 'windows' |
| elif platform.system() == 'Darwin': |
| return 'mac' |
| elif platform.system() == 'Linux': |
| return 'linux' |
| else: |
| return 'posix' |
| |
| |
| # setup a signal handler so that signal.pause registers 'something' |
| # when a child finishes |
| # not using futures and threading to avoid a dependency on subprocess32 |
| if platform_string() == 'windows': |
| pass |
| else: |
| have_alarm = False |
| def alarm_handler(unused_signum, unused_frame): |
| global have_alarm |
| have_alarm = False |
| |
| signal.signal(signal.SIGCHLD, lambda unused_signum, unused_frame: None) |
| signal.signal(signal.SIGALRM, alarm_handler) |
| |
| |
| _SUCCESS = object() |
| _FAILURE = object() |
| _RUNNING = object() |
| _KILLED = object() |
| |
| |
| _COLORS = { |
| 'red': [ 31, 0 ], |
| 'green': [ 32, 0 ], |
| 'yellow': [ 33, 0 ], |
| 'lightgray': [ 37, 0], |
| 'gray': [ 30, 1 ], |
| 'purple': [ 35, 0 ], |
| } |
| |
| |
| _BEGINNING_OF_LINE = '\x1b[0G' |
| _CLEAR_LINE = '\x1b[2K' |
| |
| |
| _TAG_COLOR = { |
| 'FAILED': 'red', |
| 'FLAKE': 'purple', |
| 'TIMEOUT_FLAKE': 'purple', |
| 'WARNING': 'yellow', |
| 'TIMEOUT': 'red', |
| 'PASSED': 'green', |
| 'START': 'gray', |
| 'WAITING': 'yellow', |
| 'SUCCESS': 'green', |
| 'IDLE': 'gray', |
| } |
| |
| |
| def message(tag, msg, explanatory_text=None, do_newline=False): |
| if message.old_tag == tag and message.old_msg == msg and not explanatory_text: |
| return |
| message.old_tag = tag |
| message.old_msg = msg |
| try: |
| if platform_string() == 'windows' or not sys.stdout.isatty(): |
| if explanatory_text: |
| print explanatory_text |
| print '%s: %s' % (tag, msg) |
| return |
| sys.stdout.write('%s%s%s\x1b[%d;%dm%s\x1b[0m: %s%s' % ( |
| _BEGINNING_OF_LINE, |
| _CLEAR_LINE, |
| '\n%s' % explanatory_text if explanatory_text is not None else '', |
| _COLORS[_TAG_COLOR[tag]][1], |
| _COLORS[_TAG_COLOR[tag]][0], |
| tag, |
| msg, |
| '\n' if do_newline or explanatory_text is not None else '')) |
| sys.stdout.flush() |
| except: |
| pass |
| |
| message.old_tag = '' |
| message.old_msg = '' |
| |
| def which(filename): |
| if '/' in filename: |
| return filename |
| for path in os.environ['PATH'].split(os.pathsep): |
| if os.path.exists(os.path.join(path, filename)): |
| return os.path.join(path, filename) |
| raise Exception('%s not found' % filename) |
| |
| |
| class JobSpec(object): |
| """Specifies what to run for a job.""" |
| |
| def __init__(self, cmdline, shortname=None, environ=None, |
| cwd=None, shell=False, timeout_seconds=5*60, flake_retries=0, |
| timeout_retries=0, kill_handler=None, cpu_cost=1.0, |
| verbose_success=False): |
| """ |
| Arguments: |
| cmdline: a list of arguments to pass as the command line |
| environ: a dictionary of environment variables to set in the child process |
| kill_handler: a handler that will be called whenever job.kill() is invoked |
| cpu_cost: number of cores per second this job needs |
| """ |
| if environ is None: |
| environ = {} |
| self.cmdline = cmdline |
| self.environ = environ |
| self.shortname = cmdline[0] if shortname is None else shortname |
| self.cwd = cwd |
| self.shell = shell |
| self.timeout_seconds = timeout_seconds |
| self.flake_retries = flake_retries |
| self.timeout_retries = timeout_retries |
| self.kill_handler = kill_handler |
| self.cpu_cost = cpu_cost |
| self.verbose_success = verbose_success |
| |
| def identity(self): |
| return '%r %r' % (self.cmdline, self.environ) |
| |
| def __hash__(self): |
| return hash(self.identity()) |
| |
| def __cmp__(self, other): |
| return self.identity() == other.identity() |
| |
| def __repr__(self): |
| return 'JobSpec(shortname=%s, cmdline=%s)' % (self.shortname, self.cmdline) |
| |
| |
| class JobResult(object): |
| def __init__(self): |
| self.state = 'UNKNOWN' |
| self.returncode = -1 |
| self.elapsed_time = 0 |
| self.num_failures = 0 |
| self.retries = 0 |
| self.message = '' |
| |
| |
| class Job(object): |
| """Manages one job.""" |
| |
| def __init__(self, spec, newline_on_success, travis, add_env): |
| self._spec = spec |
| self._newline_on_success = newline_on_success |
| self._travis = travis |
| self._add_env = add_env.copy() |
| self._retries = 0 |
| self._timeout_retries = 0 |
| self._suppress_failure_message = False |
| message('START', spec.shortname, do_newline=self._travis) |
| self.result = JobResult() |
| self.start() |
| |
| def GetSpec(self): |
| return self._spec |
| |
| def start(self): |
| self._tempfile = tempfile.TemporaryFile() |
| env = dict(os.environ) |
| env.update(self._spec.environ) |
| env.update(self._add_env) |
| env = sanitized_environment(env) |
| self._start = time.time() |
| cmdline = self._spec.cmdline |
| if measure_cpu_costs: |
| cmdline = ['time', '--portability'] + cmdline |
| try_start = lambda: subprocess.Popen(args=cmdline, |
| stderr=subprocess.STDOUT, |
| stdout=self._tempfile, |
| cwd=self._spec.cwd, |
| shell=self._spec.shell, |
| env=env) |
| delay = 0.3 |
| for i in range(0, 4): |
| try: |
| self._process = try_start() |
| break |
| except OSError: |
| message('WARNING', 'Failed to start %s, retrying in %f seconds' % (self._spec.shortname, delay)) |
| time.sleep(delay) |
| delay *= 2 |
| else: |
| self._process = try_start() |
| self._state = _RUNNING |
| |
| def state(self): |
| """Poll current state of the job. Prints messages at completion.""" |
| def stdout(self=self): |
| self._tempfile.seek(0) |
| stdout = self._tempfile.read() |
| self.result.message = stdout[-_MAX_RESULT_SIZE:] |
| return stdout |
| if self._state == _RUNNING and self._process.poll() is not None: |
| elapsed = time.time() - self._start |
| self.result.elapsed_time = elapsed |
| if self._process.returncode != 0: |
| if self._retries < self._spec.flake_retries: |
| message('FLAKE', '%s [ret=%d, pid=%d]' % ( |
| self._spec.shortname, self._process.returncode, self._process.pid), |
| stdout(), do_newline=True) |
| self._retries += 1 |
| self.result.num_failures += 1 |
| self.result.retries = self._timeout_retries + self._retries |
| self.start() |
| else: |
| self._state = _FAILURE |
| if not self._suppress_failure_message: |
| message('FAILED', '%s [ret=%d, pid=%d]' % ( |
| self._spec.shortname, self._process.returncode, self._process.pid), |
| stdout(), do_newline=True) |
| self.result.state = 'FAILED' |
| self.result.num_failures += 1 |
| self.result.returncode = self._process.returncode |
| else: |
| self._state = _SUCCESS |
| measurement = '' |
| if measure_cpu_costs: |
| m = re.search(r'real ([0-9.]+)\nuser ([0-9.]+)\nsys ([0-9.]+)', stdout()) |
| real = float(m.group(1)) |
| user = float(m.group(2)) |
| sys = float(m.group(3)) |
| if real > 0.5: |
| cores = (user + sys) / real |
| measurement = '; cpu_cost=%.01f; estimated=%.01f' % (cores, self._spec.cpu_cost) |
| message('PASSED', '%s [time=%.1fsec; retries=%d:%d%s]' % ( |
| self._spec.shortname, elapsed, self._retries, self._timeout_retries, measurement), |
| stdout() if self._spec.verbose_success else None, |
| do_newline=self._newline_on_success or self._travis) |
| self.result.state = 'PASSED' |
| elif (self._state == _RUNNING and |
| self._spec.timeout_seconds is not None and |
| time.time() - self._start > self._spec.timeout_seconds): |
| if self._timeout_retries < self._spec.timeout_retries: |
| message('TIMEOUT_FLAKE', '%s [pid=%d]' % (self._spec.shortname, self._process.pid), stdout(), do_newline=True) |
| self._timeout_retries += 1 |
| self.result.num_failures += 1 |
| self.result.retries = self._timeout_retries + self._retries |
| if self._spec.kill_handler: |
| self._spec.kill_handler(self) |
| self._process.terminate() |
| self.start() |
| else: |
| message('TIMEOUT', '%s [pid=%d]' % (self._spec.shortname, self._process.pid), stdout(), do_newline=True) |
| self.kill() |
| self.result.state = 'TIMEOUT' |
| self.result.num_failures += 1 |
| return self._state |
| |
| def kill(self): |
| if self._state == _RUNNING: |
| self._state = _KILLED |
| if self._spec.kill_handler: |
| self._spec.kill_handler(self) |
| self._process.terminate() |
| |
| def suppress_failure_message(self): |
| self._suppress_failure_message = True |
| |
| |
| class Jobset(object): |
| """Manages one run of jobs.""" |
| |
| def __init__(self, check_cancelled, maxjobs, newline_on_success, travis, |
| stop_on_failure, add_env): |
| self._running = set() |
| self._check_cancelled = check_cancelled |
| self._cancelled = False |
| self._failures = 0 |
| self._completed = 0 |
| self._maxjobs = maxjobs |
| self._newline_on_success = newline_on_success |
| self._travis = travis |
| self._stop_on_failure = stop_on_failure |
| self._add_env = add_env |
| self.resultset = {} |
| self._remaining = None |
| self._start_time = time.time() |
| |
| def set_remaining(self, remaining): |
| self._remaining = remaining |
| |
| def get_num_failures(self): |
| return self._failures |
| |
| def cpu_cost(self): |
| c = 0 |
| for job in self._running: |
| c += job._spec.cpu_cost |
| return c |
| |
| def start(self, spec): |
| """Start a job. Return True on success, False on failure.""" |
| while True: |
| if self.cancelled(): return False |
| current_cpu_cost = self.cpu_cost() |
| if current_cpu_cost == 0: break |
| if current_cpu_cost + spec.cpu_cost <= self._maxjobs: break |
| self.reap() |
| if self.cancelled(): return False |
| job = Job(spec, |
| self._newline_on_success, |
| self._travis, |
| self._add_env) |
| self._running.add(job) |
| if not self.resultset.has_key(job.GetSpec().shortname): |
| self.resultset[job.GetSpec().shortname] = [] |
| return True |
| |
| def reap(self): |
| """Collect the dead jobs.""" |
| while self._running: |
| dead = set() |
| for job in self._running: |
| st = job.state() |
| if st == _RUNNING: continue |
| if st == _FAILURE or st == _KILLED: |
| self._failures += 1 |
| if self._stop_on_failure: |
| self._cancelled = True |
| for job in self._running: |
| job.kill() |
| dead.add(job) |
| break |
| for job in dead: |
| self._completed += 1 |
| self.resultset[job.GetSpec().shortname].append(job.result) |
| self._running.remove(job) |
| if dead: return |
| if (not self._travis): |
| rstr = '' if self._remaining is None else '%d queued, ' % self._remaining |
| if self._remaining is not None and self._completed > 0: |
| now = time.time() |
| sofar = now - self._start_time |
| remaining = sofar / self._completed * (self._remaining + len(self._running)) |
| rstr = 'ETA %.1f sec; %s' % (remaining, rstr) |
| message('WAITING', '%s%d jobs running, %d complete, %d failed' % ( |
| rstr, len(self._running), self._completed, self._failures)) |
| if platform_string() == 'windows': |
| time.sleep(0.1) |
| else: |
| global have_alarm |
| if not have_alarm: |
| have_alarm = True |
| signal.alarm(10) |
| signal.pause() |
| |
| def cancelled(self): |
| """Poll for cancellation.""" |
| if self._cancelled: return True |
| if not self._check_cancelled(): return False |
| for job in self._running: |
| job.kill() |
| self._cancelled = True |
| return True |
| |
| def finish(self): |
| while self._running: |
| if self.cancelled(): pass # poll cancellation |
| self.reap() |
| return not self.cancelled() and self._failures == 0 |
| |
| |
| def _never_cancelled(): |
| return False |
| |
| |
| def tag_remaining(xs): |
| staging = [] |
| for x in xs: |
| staging.append(x) |
| if len(staging) > 5000: |
| yield (staging.pop(0), None) |
| n = len(staging) |
| for i, x in enumerate(staging): |
| yield (x, n - i - 1) |
| |
| |
| def run(cmdlines, |
| check_cancelled=_never_cancelled, |
| maxjobs=None, |
| newline_on_success=False, |
| travis=False, |
| infinite_runs=False, |
| stop_on_failure=False, |
| add_env={}): |
| js = Jobset(check_cancelled, |
| maxjobs if maxjobs is not None else _DEFAULT_MAX_JOBS, |
| newline_on_success, travis, stop_on_failure, add_env) |
| for cmdline, remaining in tag_remaining(cmdlines): |
| if not js.start(cmdline): |
| break |
| if remaining is not None: |
| js.set_remaining(remaining) |
| js.finish() |
| return js.get_num_failures(), js.resultset |