Major changes are as follows:
- Avoid `SecuritySupport.IsProductBinary` and unnecessary AMSI/suspicious code scan at startup time
- Update `CompiledScriptBlockData.IsProductCode` to avoid unnecessary calls to `IsProductBinary`, which attempts to retrieve catalog signature of the target file.
- Update `PerformSecurityChecks` to skip AMSI and suspicious code scan for the `.psd1` file that contains a safe `HashtableAst` only.
- Use customized `ReadOnlyBag` instead of `ImmutableHashSet` so that we can avoid loading the `System.Collections.Immutable.dll` completely.
- Replace `SHA1` with `CRC32` when generating module analysis cache file name
- This remove the loading of `System.Security.Cryptography.Algorithms.dll` at startup
- Move `ConvertFrom-SddlString` to C# to remove the `Utility.psm1` file.
- Crossgen `Microsoft.ApplicationInsights.dll` and enable tiered compilation
- Even pwsh with crossgen assemblies spends a lot time in jitting at the startup, about `191.6ms` comparing with `24.7ms` for Windows PowerShell.
- Jitting `Microsoft.ApplicationInsights.dll` takes about `51.6ms`.
- By crossgen `Microsoft.ApplicationInsights.dll` and enable tiered compilation, the jitting time drops to about `98.9ms`.
There a some differences in support of named pipes for Windows and non-Windows. Named pipes on Unix have a 104 character path limit. On macOS, the `$env:TMPDIR` (on my system) is already 49 characters; corefx adds 12 more. Since AppDomainName isn't really used, changed it from `DefaultAppDomain` to `None` to shorten the name. Need to keep it since Windows PowerShell expects it. Changed `starttime` part of pipe name to 8 hex characters which is to provide uniqueness to the pipe name.
Based on standard practices, we need to have a copyright and license notice at the top of each source file. Removed existing copyrights and updated/added copyright notices for .h, .cpp, .cs, .ps1, and .psm1 files.
Updated module manifests for consistency to have Author = "PowerShell" and Company = "Microsoft Corporation". Removed multiple line breaks.
Separate PR coming to update contribution document for new source files: #6140
Manually reviewed each change.
Fix#6073
CoreCLR doesn't call finalizer on process exit. PowerShell relies on the CLR finalizer to clean up state on exit. In this case, a Runspace pool was not closed or disposed and any pipeline worker threads created to run concurrent scripts won't end, causing the hang. The same thing can happen if any individual Runspace is created to run a concurrent script and is not closed.
We cannot use the `AppDomain.DomainUnload` event because it's not supported by the default load context. The `AppDomain.ProcessExit` event is also not helpful since it is only called during application exit which means threads already have to be cleaned up.
The fix introduces a static property called `PrimaryRunspace` to `Runspace`. When the PrimaryRunspace is closing it means that the PowerShell session is ending and on exit clean should be performed. The static property `PrimaryRunspace` can only be set once per process.
The class CommandFactory served no real purpose in command lookup
other than to unnecessarily add a few frames to the call stack,
introduce an extra indirection, and add a couple of unnecessary
checks that essential instances like ExecutionContext are not null.
For PSCore 6, we are only supporting InitialSessionState. The RunspaceConfiguration APIs were already made internal. This PR removes all the code related to RunspaceConfiguration. This also means that some public APIs have changed. Was deciding between leaving the RunspaceConfiguration parameters and throwing Unsupported, but thought it was better to have it a compile-time error. This should simplify the code base.
This change moves powershell to .NET Core 2.0. Major changes are:
1. PowerShell assemblies are now targeting `netcoreapp2.0`. We are using `microsoft.netcore.app-2.0.0-preview1-001913-00`, which is from dotnet-core build 4/4/17. We cannot target `netstandard2.0` because the packages `System.Reflection.Emit` and `System.Reflection.Emit.Lightweight`, which are needed for powershell class, cannot be referenced when targeting `netstandard2.0`.
2. Refactor code to remove most CLR stub types and extension types.
3. Update build scripts to enable CI builds. The `-cache` section is specified to depend on `appveyor.yml`, so the cache will be invalidated if `appveyor.yml` is changed.
4. Ship `netcoreapp` reference assemblies with powershell to fix the issues in `Add-Type` (#2764). By default `Add-Type` will reference all those reference assemblies when compiling C# code. If `-ReferenceAssembly` is specified, then we search reference assemblies first, then the framework runtime assemblies, and lastly the loaded assemblies (possibly a third-party one that was already loaded).
5. `dotnet publish` generates executable on Unix platforms, but doesn't set "x" permission and thus it cannot execute. Currently, the "x" permission is set in the build script, `dotnet/cli` issue [#6286](https://github.com/dotnet/cli/issues/6286) is tracking this.
6. Replace the use of some APIs with the ones that take `SecureString`.
7. osx.10.12 is required to update to `netcoreapp2.0` because `dotnet-cli` 2.0.0-preview only works on osx.10.12.
8. Add dependency to `System.ValueTuple` to work around a ambiguous type identity issue in coreclr. The issue is tracked by `dotnet/corefx` [#17797](https://github.com/dotnet/corefx/issues/17797). When moving to newer version of `netcoreapp2.0`, we need to verify if this dependency is still needed.
There are cases like using PowerShell via Puppet where the account being
used does not have a home directory. Updated PowerShell to use a process
specific temporary directory if HOME, CONFIG, CACHE, and DATA directories
are not available. Temporary directory is removed when last runspace
is disposed.
Our private implementation of FailFast was likely introduced
when each individual application needed it's own code to
get Watson reports. The CLR takes care of this for us now,
so we don't need our implementation.
Our method CheckForSevereException was also introduced in
the early days of the CLR - the exceptions it was checking
for aren't actually raised the CLR anymore, they just FailFast.
I removed them as there is a tiny bit of overhead (in code size)
and also in the generated code, e.g. dynamic sites called the method.
I (Jason Shirk) ran https://github.com/dotnet/codeformatter with the default rules, basically:
codeformatter /nocopyright "/c:DEBUG,UNIX,CORECLR" @files.rsp
This caused a few problems building, which were fixed up manually.
Notable changes:
`this.` is removed unless needed to disambiguate.
private instance fields are renamed to have a `_` prefix.
private static fields are renamed to have a `s_` prefix.
I left some projects alone (like PackageManagement) and also left some generated code alone.
Travis Plunk