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[J-u-boot.git] / tools / buildman / builderthread.py
1 # SPDX-License-Identifier: GPL-2.0+
2 # Copyright (c) 2014 Google, Inc
3 #
4
5 import errno
6 import glob
7 import os
8 import shutil
9 import sys
10 import threading
11
12 from patman import command
13 from patman import gitutil
14
15 RETURN_CODE_RETRY = -1
16 BASE_ELF_FILENAMES = ['u-boot', 'spl/u-boot-spl', 'tpl/u-boot-tpl']
17
18 def Mkdir(dirname, parents = False):
19     """Make a directory if it doesn't already exist.
20
21     Args:
22         dirname: Directory to create
23     """
24     try:
25         if parents:
26             os.makedirs(dirname)
27         else:
28             os.mkdir(dirname)
29     except OSError as err:
30         if err.errno == errno.EEXIST:
31             if os.path.realpath('.') == os.path.realpath(dirname):
32                 print("Cannot create the current working directory '%s'!" % dirname)
33                 sys.exit(1)
34             pass
35         else:
36             raise
37
38 class BuilderJob:
39     """Holds information about a job to be performed by a thread
40
41     Members:
42         board: Board object to build
43         commits: List of Commit objects to build
44         keep_outputs: True to save build output files
45         step: 1 to process every commit, n to process every nth commit
46         work_in_output: Use the output directory as the work directory and
47             don't write to a separate output directory.
48     """
49     def __init__(self):
50         self.board = None
51         self.commits = []
52         self.keep_outputs = False
53         self.step = 1
54         self.work_in_output = False
55
56
57 class ResultThread(threading.Thread):
58     """This thread processes results from builder threads.
59
60     It simply passes the results on to the builder. There is only one
61     result thread, and this helps to serialise the build output.
62     """
63     def __init__(self, builder):
64         """Set up a new result thread
65
66         Args:
67             builder: Builder which will be sent each result
68         """
69         threading.Thread.__init__(self)
70         self.builder = builder
71
72     def run(self):
73         """Called to start up the result thread.
74
75         We collect the next result job and pass it on to the build.
76         """
77         while True:
78             result = self.builder.out_queue.get()
79             self.builder.ProcessResult(result)
80             self.builder.out_queue.task_done()
81
82
83 class BuilderThread(threading.Thread):
84     """This thread builds U-Boot for a particular board.
85
86     An input queue provides each new job. We run 'make' to build U-Boot
87     and then pass the results on to the output queue.
88
89     Members:
90         builder: The builder which contains information we might need
91         thread_num: Our thread number (0-n-1), used to decide on a
92                 temporary directory. If this is -1 then there are no threads
93                 and we are the (only) main process
94     """
95     def __init__(self, builder, thread_num, mrproper, per_board_out_dir):
96         """Set up a new builder thread"""
97         threading.Thread.__init__(self)
98         self.builder = builder
99         self.thread_num = thread_num
100         self.mrproper = mrproper
101         self.per_board_out_dir = per_board_out_dir
102
103     def Make(self, commit, brd, stage, cwd, *args, **kwargs):
104         """Run 'make' on a particular commit and board.
105
106         The source code will already be checked out, so the 'commit'
107         argument is only for information.
108
109         Args:
110             commit: Commit object that is being built
111             brd: Board object that is being built
112             stage: Stage of the build. Valid stages are:
113                         mrproper - can be called to clean source
114                         config - called to configure for a board
115                         build - the main make invocation - it does the build
116             args: A list of arguments to pass to 'make'
117             kwargs: A list of keyword arguments to pass to command.RunPipe()
118
119         Returns:
120             CommandResult object
121         """
122         return self.builder.do_make(commit, brd, stage, cwd, *args,
123                 **kwargs)
124
125     def RunCommit(self, commit_upto, brd, work_dir, do_config, config_only,
126                   force_build, force_build_failures, work_in_output):
127         """Build a particular commit.
128
129         If the build is already done, and we are not forcing a build, we skip
130         the build and just return the previously-saved results.
131
132         Args:
133             commit_upto: Commit number to build (0...n-1)
134             brd: Board object to build
135             work_dir: Directory to which the source will be checked out
136             do_config: True to run a make <board>_defconfig on the source
137             config_only: Only configure the source, do not build it
138             force_build: Force a build even if one was previously done
139             force_build_failures: Force a bulid if the previous result showed
140                 failure
141             work_in_output: Use the output directory as the work directory and
142                 don't write to a separate output directory.
143
144         Returns:
145             tuple containing:
146                 - CommandResult object containing the results of the build
147                 - boolean indicating whether 'make config' is still needed
148         """
149         # Create a default result - it will be overwritte by the call to
150         # self.Make() below, in the event that we do a build.
151         result = command.CommandResult()
152         result.return_code = 0
153         if work_in_output or self.builder.in_tree:
154             out_dir = work_dir
155         else:
156             if self.per_board_out_dir:
157                 out_rel_dir = os.path.join('..', brd.target)
158             else:
159                 out_rel_dir = 'build'
160             out_dir = os.path.join(work_dir, out_rel_dir)
161
162         # Check if the job was already completed last time
163         done_file = self.builder.GetDoneFile(commit_upto, brd.target)
164         result.already_done = os.path.exists(done_file)
165         will_build = (force_build or force_build_failures or
166             not result.already_done)
167         if result.already_done:
168             # Get the return code from that build and use it
169             with open(done_file, 'r') as fd:
170                 try:
171                     result.return_code = int(fd.readline())
172                 except ValueError:
173                     # The file may be empty due to running out of disk space.
174                     # Try a rebuild
175                     result.return_code = RETURN_CODE_RETRY
176
177             # Check the signal that the build needs to be retried
178             if result.return_code == RETURN_CODE_RETRY:
179                 will_build = True
180             elif will_build:
181                 err_file = self.builder.GetErrFile(commit_upto, brd.target)
182                 if os.path.exists(err_file) and os.stat(err_file).st_size:
183                     result.stderr = 'bad'
184                 elif not force_build:
185                     # The build passed, so no need to build it again
186                     will_build = False
187
188         if will_build:
189             # We are going to have to build it. First, get a toolchain
190             if not self.toolchain:
191                 try:
192                     self.toolchain = self.builder.toolchains.Select(brd.arch)
193                 except ValueError as err:
194                     result.return_code = 10
195                     result.stdout = ''
196                     result.stderr = str(err)
197                     # TODO([email protected]): This gets swallowed, but needs
198                     # to be reported.
199
200             if self.toolchain:
201                 # Checkout the right commit
202                 if self.builder.commits:
203                     commit = self.builder.commits[commit_upto]
204                     if self.builder.checkout:
205                         git_dir = os.path.join(work_dir, '.git')
206                         gitutil.Checkout(commit.hash, git_dir, work_dir,
207                                          force=True)
208                 else:
209                     commit = 'current'
210
211                 # Set up the environment and command line
212                 env = self.toolchain.MakeEnvironment(self.builder.full_path)
213                 Mkdir(out_dir)
214                 args = []
215                 cwd = work_dir
216                 src_dir = os.path.realpath(work_dir)
217                 if not self.builder.in_tree:
218                     if commit_upto is None:
219                         # In this case we are building in the original source
220                         # directory (i.e. the current directory where buildman
221                         # is invoked. The output directory is set to this
222                         # thread's selected work directory.
223                         #
224                         # Symlinks can confuse U-Boot's Makefile since
225                         # we may use '..' in our path, so remove them.
226                         out_dir = os.path.realpath(out_dir)
227                         args.append('O=%s' % out_dir)
228                         cwd = None
229                         src_dir = os.getcwd()
230                     else:
231                         args.append('O=%s' % out_rel_dir)
232                 if self.builder.verbose_build:
233                     args.append('V=1')
234                 else:
235                     args.append('-s')
236                 if self.builder.num_jobs is not None:
237                     args.extend(['-j', str(self.builder.num_jobs)])
238                 if self.builder.warnings_as_errors:
239                     args.append('KCFLAGS=-Werror')
240                 config_args = ['%s_defconfig' % brd.target]
241                 config_out = ''
242                 args.extend(self.builder.toolchains.GetMakeArguments(brd))
243                 args.extend(self.toolchain.MakeArgs())
244
245                 # Remove any output targets. Since we use a build directory that
246                 # was previously used by another board, it may have produced an
247                 # SPL image. If we don't remove it (i.e. see do_config and
248                 # self.mrproper below) then it will appear to be the output of
249                 # this build, even if it does not produce SPL images.
250                 build_dir = self.builder.GetBuildDir(commit_upto, brd.target)
251                 for elf in BASE_ELF_FILENAMES:
252                     fname = os.path.join(out_dir, elf)
253                     if os.path.exists(fname):
254                         os.remove(fname)
255
256                 # If we need to reconfigure, do that now
257                 if do_config:
258                     config_out = ''
259                     if self.mrproper:
260                         result = self.Make(commit, brd, 'mrproper', cwd,
261                                 'mrproper', *args, env=env)
262                         config_out += result.combined
263                     result = self.Make(commit, brd, 'config', cwd,
264                             *(args + config_args), env=env)
265                     config_out += result.combined
266                     do_config = False   # No need to configure next time
267                 if result.return_code == 0:
268                     if config_only:
269                         args.append('cfg')
270                     result = self.Make(commit, brd, 'build', cwd, *args,
271                             env=env)
272                 result.stderr = result.stderr.replace(src_dir + '/', '')
273                 if self.builder.verbose_build:
274                     result.stdout = config_out + result.stdout
275             else:
276                 result.return_code = 1
277                 result.stderr = 'No tool chain for %s\n' % brd.arch
278             result.already_done = False
279
280         result.toolchain = self.toolchain
281         result.brd = brd
282         result.commit_upto = commit_upto
283         result.out_dir = out_dir
284         return result, do_config
285
286     def _WriteResult(self, result, keep_outputs, work_in_output):
287         """Write a built result to the output directory.
288
289         Args:
290             result: CommandResult object containing result to write
291             keep_outputs: True to store the output binaries, False
292                 to delete them
293             work_in_output: Use the output directory as the work directory and
294                 don't write to a separate output directory.
295         """
296         # Fatal error
297         if result.return_code < 0:
298             return
299
300         # If we think this might have been aborted with Ctrl-C, record the
301         # failure but not that we are 'done' with this board. A retry may fix
302         # it.
303         maybe_aborted =  result.stderr and 'No child processes' in result.stderr
304
305         if result.already_done:
306             return
307
308         # Write the output and stderr
309         output_dir = self.builder._GetOutputDir(result.commit_upto)
310         Mkdir(output_dir)
311         build_dir = self.builder.GetBuildDir(result.commit_upto,
312                 result.brd.target)
313         Mkdir(build_dir)
314
315         outfile = os.path.join(build_dir, 'log')
316         with open(outfile, 'w') as fd:
317             if result.stdout:
318                 fd.write(result.stdout)
319
320         errfile = self.builder.GetErrFile(result.commit_upto,
321                 result.brd.target)
322         if result.stderr:
323             with open(errfile, 'w') as fd:
324                 fd.write(result.stderr)
325         elif os.path.exists(errfile):
326             os.remove(errfile)
327
328         if result.toolchain:
329             # Write the build result and toolchain information.
330             done_file = self.builder.GetDoneFile(result.commit_upto,
331                     result.brd.target)
332             with open(done_file, 'w') as fd:
333                 if maybe_aborted:
334                     # Special code to indicate we need to retry
335                     fd.write('%s' % RETURN_CODE_RETRY)
336                 else:
337                     fd.write('%s' % result.return_code)
338             with open(os.path.join(build_dir, 'toolchain'), 'w') as fd:
339                 print('gcc', result.toolchain.gcc, file=fd)
340                 print('path', result.toolchain.path, file=fd)
341                 print('cross', result.toolchain.cross, file=fd)
342                 print('arch', result.toolchain.arch, file=fd)
343                 fd.write('%s' % result.return_code)
344
345             # Write out the image and function size information and an objdump
346             env = result.toolchain.MakeEnvironment(self.builder.full_path)
347             with open(os.path.join(build_dir, 'out-env'), 'w') as fd:
348                 for var in sorted(env.keys()):
349                     print('%s="%s"' % (var, env[var]), file=fd)
350             lines = []
351             for fname in BASE_ELF_FILENAMES:
352                 cmd = ['%snm' % self.toolchain.cross, '--size-sort', fname]
353                 nm_result = command.RunPipe([cmd], capture=True,
354                         capture_stderr=True, cwd=result.out_dir,
355                         raise_on_error=False, env=env)
356                 if nm_result.stdout:
357                     nm = self.builder.GetFuncSizesFile(result.commit_upto,
358                                     result.brd.target, fname)
359                     with open(nm, 'w') as fd:
360                         print(nm_result.stdout, end=' ', file=fd)
361
362                 cmd = ['%sobjdump' % self.toolchain.cross, '-h', fname]
363                 dump_result = command.RunPipe([cmd], capture=True,
364                         capture_stderr=True, cwd=result.out_dir,
365                         raise_on_error=False, env=env)
366                 rodata_size = ''
367                 if dump_result.stdout:
368                     objdump = self.builder.GetObjdumpFile(result.commit_upto,
369                                     result.brd.target, fname)
370                     with open(objdump, 'w') as fd:
371                         print(dump_result.stdout, end=' ', file=fd)
372                     for line in dump_result.stdout.splitlines():
373                         fields = line.split()
374                         if len(fields) > 5 and fields[1] == '.rodata':
375                             rodata_size = fields[2]
376
377                 cmd = ['%ssize' % self.toolchain.cross, fname]
378                 size_result = command.RunPipe([cmd], capture=True,
379                         capture_stderr=True, cwd=result.out_dir,
380                         raise_on_error=False, env=env)
381                 if size_result.stdout:
382                     lines.append(size_result.stdout.splitlines()[1] + ' ' +
383                                  rodata_size)
384
385             # Extract the environment from U-Boot and dump it out
386             cmd = ['%sobjcopy' % self.toolchain.cross, '-O', 'binary',
387                    '-j', '.rodata.default_environment',
388                    'env/built-in.o', 'uboot.env']
389             command.RunPipe([cmd], capture=True,
390                             capture_stderr=True, cwd=result.out_dir,
391                             raise_on_error=False, env=env)
392             ubootenv = os.path.join(result.out_dir, 'uboot.env')
393             if not work_in_output:
394                 self.CopyFiles(result.out_dir, build_dir, '', ['uboot.env'])
395
396             # Write out the image sizes file. This is similar to the output
397             # of binutil's 'size' utility, but it omits the header line and
398             # adds an additional hex value at the end of each line for the
399             # rodata size
400             if len(lines):
401                 sizes = self.builder.GetSizesFile(result.commit_upto,
402                                 result.brd.target)
403                 with open(sizes, 'w') as fd:
404                     print('\n'.join(lines), file=fd)
405
406         if not work_in_output:
407             # Write out the configuration files, with a special case for SPL
408             for dirname in ['', 'spl', 'tpl']:
409                 self.CopyFiles(
410                     result.out_dir, build_dir, dirname,
411                     ['u-boot.cfg', 'spl/u-boot-spl.cfg', 'tpl/u-boot-tpl.cfg',
412                      '.config', 'include/autoconf.mk',
413                      'include/generated/autoconf.h'])
414
415             # Now write the actual build output
416             if keep_outputs:
417                 self.CopyFiles(
418                     result.out_dir, build_dir, '',
419                     ['u-boot*', '*.bin', '*.map', '*.img', 'MLO', 'SPL',
420                      'include/autoconf.mk', 'spl/u-boot-spl*'])
421
422     def CopyFiles(self, out_dir, build_dir, dirname, patterns):
423         """Copy files from the build directory to the output.
424
425         Args:
426             out_dir: Path to output directory containing the files
427             build_dir: Place to copy the files
428             dirname: Source directory, '' for normal U-Boot, 'spl' for SPL
429             patterns: A list of filenames (strings) to copy, each relative
430                to the build directory
431         """
432         for pattern in patterns:
433             file_list = glob.glob(os.path.join(out_dir, dirname, pattern))
434             for fname in file_list:
435                 target = os.path.basename(fname)
436                 if dirname:
437                     base, ext = os.path.splitext(target)
438                     if ext:
439                         target = '%s-%s%s' % (base, dirname, ext)
440                 shutil.copy(fname, os.path.join(build_dir, target))
441
442     def RunJob(self, job):
443         """Run a single job
444
445         A job consists of a building a list of commits for a particular board.
446
447         Args:
448             job: Job to build
449
450         Returns:
451             List of Result objects
452         """
453         brd = job.board
454         work_dir = self.builder.GetThreadDir(self.thread_num)
455         self.toolchain = None
456         if job.commits:
457             # Run 'make board_defconfig' on the first commit
458             do_config = True
459             commit_upto  = 0
460             force_build = False
461             for commit_upto in range(0, len(job.commits), job.step):
462                 result, request_config = self.RunCommit(commit_upto, brd,
463                         work_dir, do_config, self.builder.config_only,
464                         force_build or self.builder.force_build,
465                         self.builder.force_build_failures,
466                         work_in_output=job.work_in_output)
467                 failed = result.return_code or result.stderr
468                 did_config = do_config
469                 if failed and not do_config:
470                     # If our incremental build failed, try building again
471                     # with a reconfig.
472                     if self.builder.force_config_on_failure:
473                         result, request_config = self.RunCommit(commit_upto,
474                             brd, work_dir, True, False, True, False,
475                             work_in_output=job.work_in_output)
476                         did_config = True
477                 if not self.builder.force_reconfig:
478                     do_config = request_config
479
480                 # If we built that commit, then config is done. But if we got
481                 # an warning, reconfig next time to force it to build the same
482                 # files that created warnings this time. Otherwise an
483                 # incremental build may not build the same file, and we will
484                 # think that the warning has gone away.
485                 # We could avoid this by using -Werror everywhere...
486                 # For errors, the problem doesn't happen, since presumably
487                 # the build stopped and didn't generate output, so will retry
488                 # that file next time. So we could detect warnings and deal
489                 # with them specially here. For now, we just reconfigure if
490                 # anything goes work.
491                 # Of course this is substantially slower if there are build
492                 # errors/warnings (e.g. 2-3x slower even if only 10% of builds
493                 # have problems).
494                 if (failed and not result.already_done and not did_config and
495                         self.builder.force_config_on_failure):
496                     # If this build failed, try the next one with a
497                     # reconfigure.
498                     # Sometimes if the board_config.h file changes it can mess
499                     # with dependencies, and we get:
500                     # make: *** No rule to make target `include/autoconf.mk',
501                     #     needed by `depend'.
502                     do_config = True
503                     force_build = True
504                 else:
505                     force_build = False
506                     if self.builder.force_config_on_failure:
507                         if failed:
508                             do_config = True
509                     result.commit_upto = commit_upto
510                     if result.return_code < 0:
511                         raise ValueError('Interrupt')
512
513                 # We have the build results, so output the result
514                 self._WriteResult(result, job.keep_outputs, job.work_in_output)
515                 if self.thread_num != -1:
516                     self.builder.out_queue.put(result)
517                 else:
518                     self.builder.ProcessResult(result)
519         else:
520             # Just build the currently checked-out build
521             result, request_config = self.RunCommit(None, brd, work_dir, True,
522                         self.builder.config_only, True,
523                         self.builder.force_build_failures,
524                         work_in_output=job.work_in_output)
525             result.commit_upto = 0
526             self._WriteResult(result, job.keep_outputs, job.work_in_output)
527             if self.thread_num != -1:
528                 self.builder.out_queue.put(result)
529             else:
530                 self.builder.ProcessResult(result)
531
532     def run(self):
533         """Our thread's run function
534
535         This thread picks a job from the queue, runs it, and then goes to the
536         next job.
537         """
538         while True:
539             job = self.builder.queue.get()
540             self.RunJob(job)
541             self.builder.queue.task_done()
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