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139 lines
4.8 KiB
139 lines
4.8 KiB
#!/usr/bin/env python
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# Copyright 2014 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""
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This script runs every build as a hook. If it detects that the build should
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be clobbered, it will touch the file <build_dir>/.landmine_triggered. The
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various build scripts will then check for the presence of this file and clobber
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accordingly. The script will also emit the reasons for the clobber to stdout.
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A landmine is tripped when a builder checks out a different revision, and the
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diff between the new landmines and the old ones is non-null. At this point, the
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build is clobbered.
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"""
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import difflib
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import logging
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import optparse
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import os
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import sys
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import subprocess
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import time
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import landmine_utils
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SRC_DIR = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
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def get_target_build_dir(build_tool, target):
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"""
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Returns output directory absolute path dependent on build and targets.
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Examples:
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r'c:\b\build\slave\win\build\src\out\Release'
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'/mnt/data/b/build/slave/linux/build/src/out/Debug'
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'/b/build/slave/ios_rel_device/build/src/xcodebuild/Release-iphoneos'
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Keep this function in sync with tools/build/scripts/slave/compile.py
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"""
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ret = None
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if build_tool == 'xcode':
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ret = os.path.join(SRC_DIR, 'xcodebuild', target)
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elif build_tool in ['make', 'ninja', 'ninja-ios']: # TODO: Remove ninja-ios.
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ret = os.path.join(SRC_DIR, 'out', target)
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elif build_tool in ['msvs', 'vs', 'ib']:
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ret = os.path.join(SRC_DIR, 'build', target)
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else:
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raise NotImplementedError('Unexpected GYP_GENERATORS (%s)' % build_tool)
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return os.path.abspath(ret)
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def set_up_landmines(target, new_landmines):
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"""Does the work of setting, planting, and triggering landmines."""
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out_dir = get_target_build_dir(landmine_utils.builder(), target)
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landmines_path = os.path.join(out_dir, '.landmines')
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if not os.path.exists(out_dir):
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return
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if not os.path.exists(landmines_path):
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print "Landmines tracker didn't exists."
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# FIXME(machenbach): Clobber deletes the .landmines tracker. Difficult
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# to know if we are right after a clobber or if it is first-time landmines
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# deployment. Also, a landmine-triggered clobber right after a clobber is
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# not possible. Different clobber methods for msvs, xcode and make all
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# have different blacklists of files that are not deleted.
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if os.path.exists(landmines_path):
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triggered = os.path.join(out_dir, '.landmines_triggered')
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with open(landmines_path, 'r') as f:
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old_landmines = f.readlines()
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if old_landmines != new_landmines:
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old_date = time.ctime(os.stat(landmines_path).st_ctime)
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diff = difflib.unified_diff(old_landmines, new_landmines,
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fromfile='old_landmines', tofile='new_landmines',
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fromfiledate=old_date, tofiledate=time.ctime(), n=0)
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with open(triggered, 'w') as f:
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f.writelines(diff)
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print "Setting landmine: %s" % triggered
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elif os.path.exists(triggered):
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# Remove false triggered landmines.
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os.remove(triggered)
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print "Removing landmine: %s" % triggered
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with open(landmines_path, 'w') as f:
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f.writelines(new_landmines)
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def process_options():
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"""Returns a list of landmine emitting scripts."""
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parser = optparse.OptionParser()
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parser.add_option(
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'-s', '--landmine-scripts', action='append',
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default=[os.path.join(SRC_DIR, 'build', 'get_landmines.py')],
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help='Path to the script which emits landmines to stdout. The target '
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'is passed to this script via option -t. Note that an extra '
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'script can be specified via an env var EXTRA_LANDMINES_SCRIPT.')
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parser.add_option('-v', '--verbose', action='store_true',
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default=('LANDMINES_VERBOSE' in os.environ),
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help=('Emit some extra debugging information (default off). This option '
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'is also enabled by the presence of a LANDMINES_VERBOSE environment '
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'variable.'))
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options, args = parser.parse_args()
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if args:
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parser.error('Unknown arguments %s' % args)
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logging.basicConfig(
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level=logging.DEBUG if options.verbose else logging.ERROR)
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extra_script = os.environ.get('EXTRA_LANDMINES_SCRIPT')
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if extra_script:
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return options.landmine_scripts + [extra_script]
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else:
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return options.landmine_scripts
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def main():
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landmine_scripts = process_options()
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if landmine_utils.builder() in ('dump_dependency_json', 'eclipse'):
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return 0
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landmines = []
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for s in landmine_scripts:
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proc = subprocess.Popen([sys.executable, s], stdout=subprocess.PIPE)
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output, _ = proc.communicate()
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landmines.extend([('%s\n' % l.strip()) for l in output.splitlines()])
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for target in ('Debug', 'Release'):
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set_up_landmines(target, landmines)
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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