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[u-boot] / tools / buildman / builderthread.py
1 # Copyright (c) 2014 Google, Inc
2 #
3 # SPDX-License-Identifier:      GPL-2.0+
4 #
5
6 import errno
7 import glob
8 import os
9 import shutil
10 import threading
11
12 import command
13 import gitutil
14
15 RETURN_CODE_RETRY = -1
16
17 def Mkdir(dirname, parents = False):
18     """Make a directory if it doesn't already exist.
19
20     Args:
21         dirname: Directory to create
22     """
23     try:
24         if parents:
25             os.makedirs(dirname)
26         else:
27             os.mkdir(dirname)
28     except OSError as err:
29         if err.errno == errno.EEXIST:
30             pass
31         else:
32             raise
33
34 class BuilderJob:
35     """Holds information about a job to be performed by a thread
36
37     Members:
38         board: Board object to build
39         commits: List of commit options to build.
40     """
41     def __init__(self):
42         self.board = None
43         self.commits = []
44
45
46 class ResultThread(threading.Thread):
47     """This thread processes results from builder threads.
48
49     It simply passes the results on to the builder. There is only one
50     result thread, and this helps to serialise the build output.
51     """
52     def __init__(self, builder):
53         """Set up a new result thread
54
55         Args:
56             builder: Builder which will be sent each result
57         """
58         threading.Thread.__init__(self)
59         self.builder = builder
60
61     def run(self):
62         """Called to start up the result thread.
63
64         We collect the next result job and pass it on to the build.
65         """
66         while True:
67             result = self.builder.out_queue.get()
68             self.builder.ProcessResult(result)
69             self.builder.out_queue.task_done()
70
71
72 class BuilderThread(threading.Thread):
73     """This thread builds U-Boot for a particular board.
74
75     An input queue provides each new job. We run 'make' to build U-Boot
76     and then pass the results on to the output queue.
77
78     Members:
79         builder: The builder which contains information we might need
80         thread_num: Our thread number (0-n-1), used to decide on a
81                 temporary directory
82     """
83     def __init__(self, builder, thread_num, incremental, per_board_out_dir):
84         """Set up a new builder thread"""
85         threading.Thread.__init__(self)
86         self.builder = builder
87         self.thread_num = thread_num
88         self.incremental = incremental
89         self.per_board_out_dir = per_board_out_dir
90
91     def Make(self, commit, brd, stage, cwd, *args, **kwargs):
92         """Run 'make' on a particular commit and board.
93
94         The source code will already be checked out, so the 'commit'
95         argument is only for information.
96
97         Args:
98             commit: Commit object that is being built
99             brd: Board object that is being built
100             stage: Stage of the build. Valid stages are:
101                         mrproper - can be called to clean source
102                         config - called to configure for a board
103                         build - the main make invocation - it does the build
104             args: A list of arguments to pass to 'make'
105             kwargs: A list of keyword arguments to pass to command.RunPipe()
106
107         Returns:
108             CommandResult object
109         """
110         return self.builder.do_make(commit, brd, stage, cwd, *args,
111                 **kwargs)
112
113     def RunCommit(self, commit_upto, brd, work_dir, do_config, config_only,
114                   force_build, force_build_failures):
115         """Build a particular commit.
116
117         If the build is already done, and we are not forcing a build, we skip
118         the build and just return the previously-saved results.
119
120         Args:
121             commit_upto: Commit number to build (0...n-1)
122             brd: Board object to build
123             work_dir: Directory to which the source will be checked out
124             do_config: True to run a make <board>_defconfig on the source
125             config_only: Only configure the source, do not build it
126             force_build: Force a build even if one was previously done
127             force_build_failures: Force a bulid if the previous result showed
128                 failure
129
130         Returns:
131             tuple containing:
132                 - CommandResult object containing the results of the build
133                 - boolean indicating whether 'make config' is still needed
134         """
135         # Create a default result - it will be overwritte by the call to
136         # self.Make() below, in the event that we do a build.
137         result = command.CommandResult()
138         result.return_code = 0
139         if self.builder.in_tree:
140             out_dir = work_dir
141         else:
142             if self.per_board_out_dir:
143                 out_rel_dir = os.path.join('..', brd.target)
144             else:
145                 out_rel_dir = 'build'
146             out_dir = os.path.join(work_dir, out_rel_dir)
147
148         # Check if the job was already completed last time
149         done_file = self.builder.GetDoneFile(commit_upto, brd.target)
150         result.already_done = os.path.exists(done_file)
151         will_build = (force_build or force_build_failures or
152             not result.already_done)
153         if result.already_done:
154             # Get the return code from that build and use it
155             with open(done_file, 'r') as fd:
156                 result.return_code = int(fd.readline())
157
158             # Check the signal that the build needs to be retried
159             if result.return_code == RETURN_CODE_RETRY:
160                 will_build = True
161             elif will_build:
162                 err_file = self.builder.GetErrFile(commit_upto, brd.target)
163                 if os.path.exists(err_file) and os.stat(err_file).st_size:
164                     result.stderr = 'bad'
165                 elif not force_build:
166                     # The build passed, so no need to build it again
167                     will_build = False
168
169         if will_build:
170             # We are going to have to build it. First, get a toolchain
171             if not self.toolchain:
172                 try:
173                     self.toolchain = self.builder.toolchains.Select(brd.arch)
174                 except ValueError as err:
175                     result.return_code = 10
176                     result.stdout = ''
177                     result.stderr = str(err)
178                     # TODO(sjg@chromium.org): This gets swallowed, but needs
179                     # to be reported.
180
181             if self.toolchain:
182                 # Checkout the right commit
183                 if self.builder.commits:
184                     commit = self.builder.commits[commit_upto]
185                     if self.builder.checkout:
186                         git_dir = os.path.join(work_dir, '.git')
187                         gitutil.Checkout(commit.hash, git_dir, work_dir,
188                                          force=True)
189                 else:
190                     commit = 'current'
191
192                 # Set up the environment and command line
193                 env = self.toolchain.MakeEnvironment(self.builder.full_path)
194                 Mkdir(out_dir)
195                 args = []
196                 cwd = work_dir
197                 src_dir = os.path.realpath(work_dir)
198                 if not self.builder.in_tree:
199                     if commit_upto is None:
200                         # In this case we are building in the original source
201                         # directory (i.e. the current directory where buildman
202                         # is invoked. The output directory is set to this
203                         # thread's selected work directory.
204                         #
205                         # Symlinks can confuse U-Boot's Makefile since
206                         # we may use '..' in our path, so remove them.
207                         out_dir = os.path.realpath(out_dir)
208                         args.append('O=%s' % out_dir)
209                         cwd = None
210                         src_dir = os.getcwd()
211                     else:
212                         args.append('O=%s' % out_rel_dir)
213                 if self.builder.verbose_build:
214                     args.append('V=1')
215                 else:
216                     args.append('-s')
217                 if self.builder.num_jobs is not None:
218                     args.extend(['-j', str(self.builder.num_jobs)])
219                 config_args = ['%s_defconfig' % brd.target]
220                 config_out = ''
221                 args.extend(self.builder.toolchains.GetMakeArguments(brd))
222
223                 # If we need to reconfigure, do that now
224                 if do_config:
225                     config_out = ''
226                     if not self.incremental:
227                         result = self.Make(commit, brd, 'mrproper', cwd,
228                                 'mrproper', *args, env=env)
229                         config_out += result.combined
230                     result = self.Make(commit, brd, 'config', cwd,
231                             *(args + config_args), env=env)
232                     config_out += result.combined
233                     do_config = False   # No need to configure next time
234                 if result.return_code == 0:
235                     if config_only:
236                         args.append('cfg')
237                     result = self.Make(commit, brd, 'build', cwd, *args,
238                             env=env)
239                 result.stderr = result.stderr.replace(src_dir + '/', '')
240                 if self.builder.verbose_build:
241                     result.stdout = config_out + result.stdout
242             else:
243                 result.return_code = 1
244                 result.stderr = 'No tool chain for %s\n' % brd.arch
245             result.already_done = False
246
247         result.toolchain = self.toolchain
248         result.brd = brd
249         result.commit_upto = commit_upto
250         result.out_dir = out_dir
251         return result, do_config
252
253     def _WriteResult(self, result, keep_outputs):
254         """Write a built result to the output directory.
255
256         Args:
257             result: CommandResult object containing result to write
258             keep_outputs: True to store the output binaries, False
259                 to delete them
260         """
261         # Fatal error
262         if result.return_code < 0:
263             return
264
265         # If we think this might have been aborted with Ctrl-C, record the
266         # failure but not that we are 'done' with this board. A retry may fix
267         # it.
268         maybe_aborted =  result.stderr and 'No child processes' in result.stderr
269
270         if result.already_done:
271             return
272
273         # Write the output and stderr
274         output_dir = self.builder._GetOutputDir(result.commit_upto)
275         Mkdir(output_dir)
276         build_dir = self.builder.GetBuildDir(result.commit_upto,
277                 result.brd.target)
278         Mkdir(build_dir)
279
280         outfile = os.path.join(build_dir, 'log')
281         with open(outfile, 'w') as fd:
282             if result.stdout:
283                 # We don't want unicode characters in log files
284                 fd.write(result.stdout.decode('UTF-8').encode('ASCII', 'replace'))
285
286         errfile = self.builder.GetErrFile(result.commit_upto,
287                 result.brd.target)
288         if result.stderr:
289             with open(errfile, 'w') as fd:
290                 # We don't want unicode characters in log files
291                 fd.write(result.stderr.decode('UTF-8').encode('ASCII', 'replace'))
292         elif os.path.exists(errfile):
293             os.remove(errfile)
294
295         if result.toolchain:
296             # Write the build result and toolchain information.
297             done_file = self.builder.GetDoneFile(result.commit_upto,
298                     result.brd.target)
299             with open(done_file, 'w') as fd:
300                 if maybe_aborted:
301                     # Special code to indicate we need to retry
302                     fd.write('%s' % RETURN_CODE_RETRY)
303                 else:
304                     fd.write('%s' % result.return_code)
305             with open(os.path.join(build_dir, 'toolchain'), 'w') as fd:
306                 print >>fd, 'gcc', result.toolchain.gcc
307                 print >>fd, 'path', result.toolchain.path
308                 print >>fd, 'cross', result.toolchain.cross
309                 print >>fd, 'arch', result.toolchain.arch
310                 fd.write('%s' % result.return_code)
311
312             # Write out the image and function size information and an objdump
313             env = result.toolchain.MakeEnvironment(self.builder.full_path)
314             lines = []
315             for fname in ['u-boot', 'spl/u-boot-spl']:
316                 cmd = ['%snm' % self.toolchain.cross, '--size-sort', fname]
317                 nm_result = command.RunPipe([cmd], capture=True,
318                         capture_stderr=True, cwd=result.out_dir,
319                         raise_on_error=False, env=env)
320                 if nm_result.stdout:
321                     nm = self.builder.GetFuncSizesFile(result.commit_upto,
322                                     result.brd.target, fname)
323                     with open(nm, 'w') as fd:
324                         print >>fd, nm_result.stdout,
325
326                 cmd = ['%sobjdump' % self.toolchain.cross, '-h', fname]
327                 dump_result = command.RunPipe([cmd], capture=True,
328                         capture_stderr=True, cwd=result.out_dir,
329                         raise_on_error=False, env=env)
330                 rodata_size = ''
331                 if dump_result.stdout:
332                     objdump = self.builder.GetObjdumpFile(result.commit_upto,
333                                     result.brd.target, fname)
334                     with open(objdump, 'w') as fd:
335                         print >>fd, dump_result.stdout,
336                     for line in dump_result.stdout.splitlines():
337                         fields = line.split()
338                         if len(fields) > 5 and fields[1] == '.rodata':
339                             rodata_size = fields[2]
340
341                 cmd = ['%ssize' % self.toolchain.cross, fname]
342                 size_result = command.RunPipe([cmd], capture=True,
343                         capture_stderr=True, cwd=result.out_dir,
344                         raise_on_error=False, env=env)
345                 if size_result.stdout:
346                     lines.append(size_result.stdout.splitlines()[1] + ' ' +
347                                  rodata_size)
348
349             # Write out the image sizes file. This is similar to the output
350             # of binutil's 'size' utility, but it omits the header line and
351             # adds an additional hex value at the end of each line for the
352             # rodata size
353             if len(lines):
354                 sizes = self.builder.GetSizesFile(result.commit_upto,
355                                 result.brd.target)
356                 with open(sizes, 'w') as fd:
357                     print >>fd, '\n'.join(lines)
358
359         # Write out the configuration files, with a special case for SPL
360         for dirname in ['', 'spl', 'tpl']:
361             self.CopyFiles(result.out_dir, build_dir, dirname, ['u-boot.cfg',
362                 'spl/u-boot-spl.cfg', 'tpl/u-boot-tpl.cfg', '.config',
363                 'include/autoconf.mk', 'include/generated/autoconf.h'])
364
365         # Now write the actual build output
366         if keep_outputs:
367             self.CopyFiles(result.out_dir, build_dir, '', ['u-boot*', '*.bin',
368                 '*.map', '*.img', 'MLO', 'SPL', 'include/autoconf.mk',
369                 'spl/u-boot-spl*'])
370
371     def CopyFiles(self, out_dir, build_dir, dirname, patterns):
372         """Copy files from the build directory to the output.
373
374         Args:
375             out_dir: Path to output directory containing the files
376             build_dir: Place to copy the files
377             dirname: Source directory, '' for normal U-Boot, 'spl' for SPL
378             patterns: A list of filenames (strings) to copy, each relative
379                to the build directory
380         """
381         for pattern in patterns:
382             file_list = glob.glob(os.path.join(out_dir, dirname, pattern))
383             for fname in file_list:
384                 target = os.path.basename(fname)
385                 if dirname:
386                     base, ext = os.path.splitext(target)
387                     if ext:
388                         target = '%s-%s%s' % (base, dirname, ext)
389                 shutil.copy(fname, os.path.join(build_dir, target))
390
391     def RunJob(self, job):
392         """Run a single job
393
394         A job consists of a building a list of commits for a particular board.
395
396         Args:
397             job: Job to build
398         """
399         brd = job.board
400         work_dir = self.builder.GetThreadDir(self.thread_num)
401         self.toolchain = None
402         if job.commits:
403             # Run 'make board_defconfig' on the first commit
404             do_config = True
405             commit_upto  = 0
406             force_build = False
407             for commit_upto in range(0, len(job.commits), job.step):
408                 result, request_config = self.RunCommit(commit_upto, brd,
409                         work_dir, do_config, self.builder.config_only,
410                         force_build or self.builder.force_build,
411                         self.builder.force_build_failures)
412                 failed = result.return_code or result.stderr
413                 did_config = do_config
414                 if failed and not do_config:
415                     # If our incremental build failed, try building again
416                     # with a reconfig.
417                     if self.builder.force_config_on_failure:
418                         result, request_config = self.RunCommit(commit_upto,
419                             brd, work_dir, True, False, True, False)
420                         did_config = True
421                 if not self.builder.force_reconfig:
422                     do_config = request_config
423
424                 # If we built that commit, then config is done. But if we got
425                 # an warning, reconfig next time to force it to build the same
426                 # files that created warnings this time. Otherwise an
427                 # incremental build may not build the same file, and we will
428                 # think that the warning has gone away.
429                 # We could avoid this by using -Werror everywhere...
430                 # For errors, the problem doesn't happen, since presumably
431                 # the build stopped and didn't generate output, so will retry
432                 # that file next time. So we could detect warnings and deal
433                 # with them specially here. For now, we just reconfigure if
434                 # anything goes work.
435                 # Of course this is substantially slower if there are build
436                 # errors/warnings (e.g. 2-3x slower even if only 10% of builds
437                 # have problems).
438                 if (failed and not result.already_done and not did_config and
439                         self.builder.force_config_on_failure):
440                     # If this build failed, try the next one with a
441                     # reconfigure.
442                     # Sometimes if the board_config.h file changes it can mess
443                     # with dependencies, and we get:
444                     # make: *** No rule to make target `include/autoconf.mk',
445                     #     needed by `depend'.
446                     do_config = True
447                     force_build = True
448                 else:
449                     force_build = False
450                     if self.builder.force_config_on_failure:
451                         if failed:
452                             do_config = True
453                     result.commit_upto = commit_upto
454                     if result.return_code < 0:
455                         raise ValueError('Interrupt')
456
457                 # We have the build results, so output the result
458                 self._WriteResult(result, job.keep_outputs)
459                 self.builder.out_queue.put(result)
460         else:
461             # Just build the currently checked-out build
462             result, request_config = self.RunCommit(None, brd, work_dir, True,
463                         self.builder.config_only, True,
464                         self.builder.force_build_failures)
465             result.commit_upto = 0
466             self._WriteResult(result, job.keep_outputs)
467             self.builder.out_queue.put(result)
468
469     def run(self):
470         """Our thread's run function
471
472         This thread picks a job from the queue, runs it, and then goes to the
473         next job.
474         """
475         while True:
476             job = self.builder.queue.get()
477             self.RunJob(job)
478             self.builder.queue.task_done()