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u-boot/tools/buildman/builderthread.py
Stephen Warren f79f1e0c0e buildman: allow more incremental building 
One use-case for buildman is to continually run it interactively after
each small step in a large refactoring operation. This gives more
immediate feedback than making a number of commits and then going back and
testing them. For this to work well, buildman needs to be extremely fast.
At present, a couple issues prevent it being as fast as it could be:

1) Each time buildman runs "make %_defconfig", it runs "make mrproper"
first. This throws away all previous build results, requiring a
from-scratch build. Optionally avoiding this would speed up the build, at
the cost of potentially causing or missing some build issues.

2) A build tree is created per thread rather than per board. When a thread
switches between building different boards, this often causes many files
to be rebuilt due to changing config options. Using a separate build tree
for each board would avoid this. This does put more strain on the system's
disk cache, but it is worth it on my system at least.

This commit adds two command-line options to implement the changes
described above; -I ("--incremental") turns of "make mrproper" and -P
("--per-board-out-dir") creats a build directory per board rather than per
thread.

Tested:

    ./tools/buildman/buildman.py tegra
    ./tools/buildman/buildman.py -I -P tegra
    ./tools/buildman/buildman.py -b tegra_dev tegra
    ./tools/buildman/buildman.py -b tegra_dev -I -P tegra

... each once after deleting the buildman result/work directory, and once
"incrementally" after a previous identical invocation.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Simon Glass <sjg@chromium.org> # v1
Tested-by: Simon Glass <sjg@chromium.org> # v1
Acked-by: Simon Glass <sjg@chromium.org>
2016-05-17 09:54:43 -06:00

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# Copyright (c) 2014 Google, Inc
#
# SPDX-License-Identifier: GPL-2.0+
#
import errno
import glob
import os
import shutil
import threading
import command
import gitutil
RETURN_CODE_RETRY = -1
def Mkdir(dirname, parents = False):
"""Make a directory if it doesn't already exist.
Args:
dirname: Directory to create
"""
try:
if parents:
os.makedirs(dirname)
else:
os.mkdir(dirname)
except OSError as err:
if err.errno == errno.EEXIST:
pass
else:
raise
class BuilderJob:
"""Holds information about a job to be performed by a thread
Members:
board: Board object to build
commits: List of commit options to build.
"""
def __init__(self):
self.board = None
self.commits = []
class ResultThread(threading.Thread):
"""This thread processes results from builder threads.
It simply passes the results on to the builder. There is only one
result thread, and this helps to serialise the build output.
"""
def __init__(self, builder):
"""Set up a new result thread
Args:
builder: Builder which will be sent each result
"""
threading.Thread.__init__(self)
self.builder = builder
def run(self):
"""Called to start up the result thread.
We collect the next result job and pass it on to the build.
"""
while True:
result = self.builder.out_queue.get()
self.builder.ProcessResult(result)
self.builder.out_queue.task_done()
class BuilderThread(threading.Thread):
"""This thread builds U-Boot for a particular board.
An input queue provides each new job. We run 'make' to build U-Boot
and then pass the results on to the output queue.
Members:
builder: The builder which contains information we might need
thread_num: Our thread number (0-n-1), used to decide on a
temporary directory
"""
def __init__(self, builder, thread_num, incremental, per_board_out_dir):
"""Set up a new builder thread"""
threading.Thread.__init__(self)
self.builder = builder
self.thread_num = thread_num
self.incremental = incremental
self.per_board_out_dir = per_board_out_dir
def Make(self, commit, brd, stage, cwd, *args, **kwargs):
"""Run 'make' on a particular commit and board.
The source code will already be checked out, so the 'commit'
argument is only for information.
Args:
commit: Commit object that is being built
brd: Board object that is being built
stage: Stage of the build. Valid stages are:
mrproper - can be called to clean source
config - called to configure for a board
build - the main make invocation - it does the build
args: A list of arguments to pass to 'make'
kwargs: A list of keyword arguments to pass to command.RunPipe()
Returns:
CommandResult object
"""
return self.builder.do_make(commit, brd, stage, cwd, *args,
**kwargs)
def RunCommit(self, commit_upto, brd, work_dir, do_config, force_build,
force_build_failures):
"""Build a particular commit.
If the build is already done, and we are not forcing a build, we skip
the build and just return the previously-saved results.
Args:
commit_upto: Commit number to build (0...n-1)
brd: Board object to build
work_dir: Directory to which the source will be checked out
do_config: True to run a make <board>_defconfig on the source
force_build: Force a build even if one was previously done
force_build_failures: Force a bulid if the previous result showed
failure
Returns:
tuple containing:
- CommandResult object containing the results of the build
- boolean indicating whether 'make config' is still needed
"""
# Create a default result - it will be overwritte by the call to
# self.Make() below, in the event that we do a build.
result = command.CommandResult()
result.return_code = 0
if self.builder.in_tree:
out_dir = work_dir
else:
if self.per_board_out_dir:
out_rel_dir = os.path.join('..', brd.target)
else:
out_rel_dir = 'build'
out_dir = os.path.join(work_dir, out_rel_dir)
# Check if the job was already completed last time
done_file = self.builder.GetDoneFile(commit_upto, brd.target)
result.already_done = os.path.exists(done_file)
will_build = (force_build or force_build_failures or
not result.already_done)
if result.already_done:
# Get the return code from that build and use it
with open(done_file, 'r') as fd:
result.return_code = int(fd.readline())
# Check the signal that the build needs to be retried
if result.return_code == RETURN_CODE_RETRY:
will_build = True
elif will_build:
err_file = self.builder.GetErrFile(commit_upto, brd.target)
if os.path.exists(err_file) and os.stat(err_file).st_size:
result.stderr = 'bad'
elif not force_build:
# The build passed, so no need to build it again
will_build = False
if will_build:
# We are going to have to build it. First, get a toolchain
if not self.toolchain:
try:
self.toolchain = self.builder.toolchains.Select(brd.arch)
except ValueError as err:
result.return_code = 10
result.stdout = ''
result.stderr = str(err)
# TODO(sjg@chromium.org): This gets swallowed, but needs
# to be reported.
if self.toolchain:
# Checkout the right commit
if self.builder.commits:
commit = self.builder.commits[commit_upto]
if self.builder.checkout:
git_dir = os.path.join(work_dir, '.git')
gitutil.Checkout(commit.hash, git_dir, work_dir,
force=True)
else:
commit = 'current'
# Set up the environment and command line
env = self.toolchain.MakeEnvironment(self.builder.full_path)
Mkdir(out_dir)
args = []
cwd = work_dir
src_dir = os.path.realpath(work_dir)
if not self.builder.in_tree:
if commit_upto is None:
# In this case we are building in the original source
# directory (i.e. the current directory where buildman
# is invoked. The output directory is set to this
# thread's selected work directory.
#
# Symlinks can confuse U-Boot's Makefile since
# we may use '..' in our path, so remove them.
out_dir = os.path.realpath(out_dir)
args.append('O=%s' % out_dir)
cwd = None
src_dir = os.getcwd()
else:
args.append('O=%s' % out_rel_dir)
if self.builder.verbose_build:
args.append('V=1')
else:
args.append('-s')
if self.builder.num_jobs is not None:
args.extend(['-j', str(self.builder.num_jobs)])
config_args = ['%s_defconfig' % brd.target]
config_out = ''
args.extend(self.builder.toolchains.GetMakeArguments(brd))
# If we need to reconfigure, do that now
if do_config:
config_out = ''
if not self.incremental:
result = self.Make(commit, brd, 'mrproper', cwd,
'mrproper', *args, env=env)
config_out += result.combined
result = self.Make(commit, brd, 'config', cwd,
*(args + config_args), env=env)
config_out += result.combined
do_config = False # No need to configure next time
if result.return_code == 0:
result = self.Make(commit, brd, 'build', cwd, *args,
env=env)
result.stderr = result.stderr.replace(src_dir + '/', '')
if self.builder.verbose_build:
result.stdout = config_out + result.stdout
else:
result.return_code = 1
result.stderr = 'No tool chain for %s\n' % brd.arch
result.already_done = False
result.toolchain = self.toolchain
result.brd = brd
result.commit_upto = commit_upto
result.out_dir = out_dir
return result, do_config
def _WriteResult(self, result, keep_outputs):
"""Write a built result to the output directory.
Args:
result: CommandResult object containing result to write
keep_outputs: True to store the output binaries, False
to delete them
"""
# Fatal error
if result.return_code < 0:
return
# If we think this might have been aborted with Ctrl-C, record the
# failure but not that we are 'done' with this board. A retry may fix
# it.
maybe_aborted = result.stderr and 'No child processes' in result.stderr
if result.already_done:
return
# Write the output and stderr
output_dir = self.builder._GetOutputDir(result.commit_upto)
Mkdir(output_dir)
build_dir = self.builder.GetBuildDir(result.commit_upto,
result.brd.target)
Mkdir(build_dir)
outfile = os.path.join(build_dir, 'log')
with open(outfile, 'w') as fd:
if result.stdout:
fd.write(result.stdout)
errfile = self.builder.GetErrFile(result.commit_upto,
result.brd.target)
if result.stderr:
with open(errfile, 'w') as fd:
fd.write(result.stderr)
elif os.path.exists(errfile):
os.remove(errfile)
if result.toolchain:
# Write the build result and toolchain information.
done_file = self.builder.GetDoneFile(result.commit_upto,
result.brd.target)
with open(done_file, 'w') as fd:
if maybe_aborted:
# Special code to indicate we need to retry
fd.write('%s' % RETURN_CODE_RETRY)
else:
fd.write('%s' % result.return_code)
with open(os.path.join(build_dir, 'toolchain'), 'w') as fd:
print >>fd, 'gcc', result.toolchain.gcc
print >>fd, 'path', result.toolchain.path
print >>fd, 'cross', result.toolchain.cross
print >>fd, 'arch', result.toolchain.arch
fd.write('%s' % result.return_code)
with open(os.path.join(build_dir, 'toolchain'), 'w') as fd:
print >>fd, 'gcc', result.toolchain.gcc
print >>fd, 'path', result.toolchain.path
# Write out the image and function size information and an objdump
env = result.toolchain.MakeEnvironment(self.builder.full_path)
lines = []
for fname in ['u-boot', 'spl/u-boot-spl']:
cmd = ['%snm' % self.toolchain.cross, '--size-sort', fname]
nm_result = command.RunPipe([cmd], capture=True,
capture_stderr=True, cwd=result.out_dir,
raise_on_error=False, env=env)
if nm_result.stdout:
nm = self.builder.GetFuncSizesFile(result.commit_upto,
result.brd.target, fname)
with open(nm, 'w') as fd:
print >>fd, nm_result.stdout,
cmd = ['%sobjdump' % self.toolchain.cross, '-h', fname]
dump_result = command.RunPipe([cmd], capture=True,
capture_stderr=True, cwd=result.out_dir,
raise_on_error=False, env=env)
rodata_size = ''
if dump_result.stdout:
objdump = self.builder.GetObjdumpFile(result.commit_upto,
result.brd.target, fname)
with open(objdump, 'w') as fd:
print >>fd, dump_result.stdout,
for line in dump_result.stdout.splitlines():
fields = line.split()
if len(fields) > 5 and fields[1] == '.rodata':
rodata_size = fields[2]
cmd = ['%ssize' % self.toolchain.cross, fname]
size_result = command.RunPipe([cmd], capture=True,
capture_stderr=True, cwd=result.out_dir,
raise_on_error=False, env=env)
if size_result.stdout:
lines.append(size_result.stdout.splitlines()[1] + ' ' +
rodata_size)
# Write out the image sizes file. This is similar to the output
# of binutil's 'size' utility, but it omits the header line and
# adds an additional hex value at the end of each line for the
# rodata size
if len(lines):
sizes = self.builder.GetSizesFile(result.commit_upto,
result.brd.target)
with open(sizes, 'w') as fd:
print >>fd, '\n'.join(lines)
# Write out the configuration files, with a special case for SPL
for dirname in ['', 'spl', 'tpl']:
self.CopyFiles(result.out_dir, build_dir, dirname, ['u-boot.cfg',
'spl/u-boot-spl.cfg', 'tpl/u-boot-tpl.cfg', '.config',
'include/autoconf.mk', 'include/generated/autoconf.h'])
# Now write the actual build output
if keep_outputs:
self.CopyFiles(result.out_dir, build_dir, '', ['u-boot*', '*.bin',
'*.map', '*.img', 'MLO', 'SPL', 'include/autoconf.mk',
'spl/u-boot-spl*'])
def CopyFiles(self, out_dir, build_dir, dirname, patterns):
"""Copy files from the build directory to the output.
Args:
out_dir: Path to output directory containing the files
build_dir: Place to copy the files
dirname: Source directory, '' for normal U-Boot, 'spl' for SPL
patterns: A list of filenames (strings) to copy, each relative
to the build directory
"""
for pattern in patterns:
file_list = glob.glob(os.path.join(out_dir, dirname, pattern))
for fname in file_list:
target = os.path.basename(fname)
if dirname:
base, ext = os.path.splitext(target)
if ext:
target = '%s-%s%s' % (base, dirname, ext)
shutil.copy(fname, os.path.join(build_dir, target))
def RunJob(self, job):
"""Run a single job
A job consists of a building a list of commits for a particular board.
Args:
job: Job to build
"""
brd = job.board
work_dir = self.builder.GetThreadDir(self.thread_num)
self.toolchain = None
if job.commits:
# Run 'make board_defconfig' on the first commit
do_config = True
commit_upto = 0
force_build = False
for commit_upto in range(0, len(job.commits), job.step):
result, request_config = self.RunCommit(commit_upto, brd,
work_dir, do_config,
force_build or self.builder.force_build,
self.builder.force_build_failures)
failed = result.return_code or result.stderr
did_config = do_config
if failed and not do_config:
# If our incremental build failed, try building again
# with a reconfig.
if self.builder.force_config_on_failure:
result, request_config = self.RunCommit(commit_upto,
brd, work_dir, True, True, False)
did_config = True
if not self.builder.force_reconfig:
do_config = request_config
# If we built that commit, then config is done. But if we got
# an warning, reconfig next time to force it to build the same
# files that created warnings this time. Otherwise an
# incremental build may not build the same file, and we will
# think that the warning has gone away.
# We could avoid this by using -Werror everywhere...
# For errors, the problem doesn't happen, since presumably
# the build stopped and didn't generate output, so will retry
# that file next time. So we could detect warnings and deal
# with them specially here. For now, we just reconfigure if
# anything goes work.
# Of course this is substantially slower if there are build
# errors/warnings (e.g. 2-3x slower even if only 10% of builds
# have problems).
if (failed and not result.already_done and not did_config and
self.builder.force_config_on_failure):
# If this build failed, try the next one with a
# reconfigure.
# Sometimes if the board_config.h file changes it can mess
# with dependencies, and we get:
# make: *** No rule to make target `include/autoconf.mk',
# needed by `depend'.
do_config = True
force_build = True
else:
force_build = False
if self.builder.force_config_on_failure:
if failed:
do_config = True
result.commit_upto = commit_upto
if result.return_code < 0:
raise ValueError('Interrupt')
# We have the build results, so output the result
self._WriteResult(result, job.keep_outputs)
self.builder.out_queue.put(result)
else:
# Just build the currently checked-out build
result, request_config = self.RunCommit(None, brd, work_dir, True,
True, self.builder.force_build_failures)
result.commit_upto = 0
self._WriteResult(result, job.keep_outputs)
self.builder.out_queue.put(result)
def run(self):
"""Our thread's run function
This thread picks a job from the queue, runs it, and then goes to the
next job.
"""
alive = True
while True:
job = self.builder.queue.get()
if self.builder.active and alive:
self.RunJob(job)
'''
try:
if self.builder.active and alive:
self.RunJob(job)
except Exception as err:
alive = False
print err
'''
self.builder.queue.task_done()
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