Add background option for testhosts#3772
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Evangelink merged 3 commits intomicrosoft:mainfrom Jun 17, 2022
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src/Microsoft.TestPlatform.TestHostProvider/Hosting/DefaultTestHostManager.cs
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| testHostPriority = environmentVariableHelper.GetEnvironmentVariableAsEnum("VSTEST_HOST_INTERNAL_PRIORITY", testHostPriority); | ||
| testHostProcess.PriorityClass = testHostPriority; | ||
| EqtTrace.Verbose("Setting test host process priority to {0}", testHostProcess.PriorityClass); | ||
| if (testHostEnvironmentVariables is not null |
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@Evangelink @nohwnd I am not familiar with the code base - but is DefaultTestHostManager also used when parallel is not in play?
Just want to make sure that it is possible to create low prio test hosts -
a) regardless of whether parallel is turned on and
b) regardless of whether the operation requested is execution versus discovery
Also if the answer to b) above is yes, then it may be better to rename this to something more general like VSTEST_BACKGROUND_OPERATION or VSTEST_BACKGROUND_PRIORITY :)
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Yes that code is used even in "sequential". This is used to decide on the level of parallelism (including sequential) to use.
This was referenced Jul 21, 2022
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Fixes AB#1555397