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HowTo.txt - Copyright 2008 Symbian Software Ltd.
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This document describes how to use this test suite for stress-testing Linux-emulation type systems on Windows.
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Structure of tests
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==================
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The Linux emulation layer tests are structured as follows:
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LinuxEmulationLayerStressTests\HowTo.txt (this file)
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LinuxEmulationLayerStressTests\makemakefile.py (described below)
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LinuxEmulationLayerStressTests\mingw.tar.bz2
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LinuxEmulationLayerStressTests\msys.tar.bz2
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun01\makefiles_testrun01.zip
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun01\testrig01.bat
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun02\makefiles_testrun02.zip
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun02\testrig02.bat
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun03\makefiles_testrun03.zip
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun03\testrig03.bat
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun04\makefiles_testrun04.zip
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun04\testrig04.bat
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun05\makefiles_testrun05.zip
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun05\testrig05.bat
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun06\makefiles_testrun06.zip
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun06\testrig06.bat
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun07\makefiles_testrun07.zip
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun07\testrig07.bat
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun08\makefiles_testrun08.zip
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LinuxEmulationLayerStressTests\GeneratedMakefiles\TestRun08\testrig08.bat
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LinuxEmulationLayerStressTests\src\msys-sed-4.1.5-src.tar.gz
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Each test run has its makefiles preserved in the corresponding zip file (e.g. makefiles_testrun01.zip).
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The testrigNN.bat are very basic batch scripts that do not take any parameters. They are simply there as a
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bootstrap to
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1) Set the PATH to contain either MSYS's or Cygwin's bin folder (but not both!)
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2) Set the PATH to contain MinGW's bin folder (for MinGW's make)
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3) Generate the makefiles in a number of for-loops (optional)
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4) Run the make over the makefiles in a number of for-loops
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In future, if any of these batch files are re-used, it will be necessary to adjust them so that
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they set the PATH environment variable correctly to contain the place where MSYS or Cygwin
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was unzipped. Then decide if you wish to generate further makefiles using the Python script,
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or if it's just enough to run the existing makefiles.
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For convenience, both MSYS and Cygwin are provided in the files
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LinuxEmulationLayerStressTests\mingw.tar.bz2
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LinuxEmulationLayerStressTests\msys.tar.bz2
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These are the versions that were tested and were shipped with SBSv2. Simply untar to a convenient
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location and update the batch files bootstraps to add these to your PATH.
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makemakefile.py
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===============
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This script, as its name suggests, makes a range of makefiles. Use the command
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python makemakefile.py -h
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to see a list of available options. At time of writing, the usage help is as follows:
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Usage: makemakefile.py [options]
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Options:
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-h, --help show this help message and exit
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-t TARGETS, --targets=TARGETS
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Number of main (or "level1") targets to generate -
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these are the targets that actually perform some
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simulated actions.
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-d DIVISIONS, --divisions=DIVISIONS
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The number of "level2" targets. Each level2 target
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will depend on t/d level1 targets. This makes makefile
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generation more logical.
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-m MAKEFILE, --makefile=MAKEFILE
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Name of makefile to generate. If blank, makefile is
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printed to STDOUT.
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-c CASE, --case=CASE Type of commands to use in each rule. Default is
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"all"; other options are "env", "echo", "cp" and "sed"
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The -t option specifies total the number of makefile targets. This should be a positive integer.
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The -d option specifies total the number of subdivisions of the makefile targets into level1/level2 targets.
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This should be a positive integer.
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The makefiles are structured in such as way, so that the dependency tree has three levels. The aim is to
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introduce some complexity into the makefile's dependency tree rather than just having a "flat" dependency tree.
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The top level in the dependency tree contains only one target called "main"; below this are the level2 targets
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which are all prerequisites of main; lastly are the level1 targets which split into groups and each group is
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the set of prerequisites for a level2 target.
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The size of these groups of level1 targets is <= DIVISIONS depending if DIVISIONS divides into TARGETS exactly or not.
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