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96 lines
3.9 KiB
Python
96 lines
3.9 KiB
Python
#
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# __COPYRIGHT__
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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from __future__ import print_function
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"""
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This configuration comes from the following blog article:
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"How scalable is SCons? The Electric Cloud Blog"
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http://blog.electric-cloud.com/2010/03/08/how-scalable-is-scons/
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The test build consists of (a lot of) compiles and links. Starting
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from the bottom, we have N C files each with a unique associated
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header file. The C files and headers were spread across
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N/500 directories in order to eliminate filesystem scalability
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concerns. Both the C files and the header files are trivial: the
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header only includes stdio.h; the C file includes the associated
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header and a second, shared header, then defines a trivial
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function. Objects are collected into groups of 20 and stored into
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a standard archive. Every 20th object is linked into an executable
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along with the archive.
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The original ElectricCloud implementation is captured in genscons.pl,
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and we just call that script to generate the configuration in a
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"sconsbld" subdirectory.
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"""
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import TestSCons
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# The values here were calibrated by hand on the ubuntu-timings slave,
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# because the configurations generated by genscons.pl only work if
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# the FILES_PER_DIRECTORY value is a multiple of the COMPILES_GROUPED
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# value, and it didn't seem worth automating that manipulation.
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#
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# The key value below is FILES_PER_DIRECTORY; the other values match
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# the default from the genscons.pl file. With the values below,
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# it creates a two-deep hierarchy of a single directory with three
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# subdirectories. Each directory (both parent and subdirectories)
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# contains sixty source files (each of which includes a .h file)
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# that are built into three libraries containing twenty object files
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# each, which are then linked into executables.
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#
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# As of r5143 on 17 August 2010, a value of 60 FILES_PER_DIRECTORY
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# performs a full build in 82.5 seconds on the ubuntu-timings slave.
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# That's more than our "normal" target of 10 seconds or so for the
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# full build, but building anything less than three libraries per
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# directory feels like it makes the test too trivial.
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import os
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test = TestSCons.TimeSCons(variables={
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'NUMBER_OF_LEVELS' : 2,
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'DIRECTORIES_PER_LEVEL' : 3,
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'FILES_PER_DIRECTORY' : 60,
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'LOOKUPS_PER_SOURCE' : 2,
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'COMPILES_GROUPED' : 20,
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},
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calibrate=['FILES_PER_DIRECTORY'])
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arguments = [
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'-l %s' % test.variables['NUMBER_OF_LEVELS'],
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'-d %s' % test.variables['DIRECTORIES_PER_LEVEL'],
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'-f %s' % test.variables['FILES_PER_DIRECTORY'],
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'-g %s' % test.variables['COMPILES_GROUPED'],
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'-u %s' % test.variables['LOOKUPS_PER_SOURCE'],
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]
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test.run(program=test.workpath('genscons.pl'), arguments=' '.join(arguments))
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# This print is not for debugging, leave it alone!
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# We want to display the output from genscons.pl's generation the build
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# configuration, so the buildbot logs contain more info.
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print(test.stdout())
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test.main(chdir='sconsbld')
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test.pass_test()
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