[Java.Interop.Tools.TypeNameMappings] improve ToJniNameFromAttributesForAndroid
#1064
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…sForAndroid`
Reviewing `dotnet-trace` output:
dotnet trace collect --format speedscope -- C:\src\xamarin-android\bin\Release\dotnet\dotnet.exe build -bl --no-restore bar.csproj
On a `dotnet new maui` application, I noticed:
79.40ms java.interop.tools.javacallablewrappers!Java.Interop.Tools.TypeNameMappings.JavaNativeTypeManager.ToJniNameFromAttribute
This method just appears to be called *a lot*, and so things I changed:
* Check `type.HasCustomAttributes`, `attributeType.HasInterfaces`, and
`attr.HasProperties` where appropriate.
* Unroll the `System.Linq` usage one level, and use plain `foreach`
* Create a `IsIJniNameProviderAttribute` method that checks against a
list of known attribute types as a "fast path".
* The "slow path" can continue to check for the
`IJniNameProviderAttribute` interface
Other changes:
* Delete `#region`!
* Some places were not actually correct, and were returning `null`
where they should `continue;` instead.
After these changes, I get:
51.64ms (1.2%) 0.13ns (<0.01%) java.interop.tools.javacallablewrappers!Java.Interop.Tools.TypeNameMappings.JavaNativeTypeManager.ToJniNameFromAttribute
This should save ~27ms on incremental builds of the `dotnet new maui`
project template and likely even more on larger projects.
jonpryor
pushed a commit
to dotnet/android
that referenced
this pull request
Dec 12, 2022
Changes: dotnet/java-interop@3a9f770...149d70f * dotnet/java-interop@149d70fe: [generator] Refactor enum writing to use SourceWriters (dotnet/java-interop#1063) * dotnet/java-interop@c2daa9f0: [Java.Interop.Tools.Cecil] DirectoryAssemblyResolver & File.Exists() (dotnet/java-interop#1065) * dotnet/java-interop@8ab9d33a: [Java.Interop.Tools.TypeNameMappings] improve `ToJniNameFromAttributesForAndroid` (dotnet/java-interop#1064) * dotnet/java-interop@09f8da26: [JavaCallableWrappers] avoid `string.Format()` (dotnet/java-interop#1061) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
jonathanpeppers
added a commit
that referenced
this pull request
Jan 5, 2023
…sForAndroid` (#1064) Reviewing `dotnet-trace` output: dotnet trace collect --format speedscope -- C:\src\xamarin-android\bin\Release\dotnet\dotnet.exe build -bl --no-restore bar.csproj On a `dotnet new maui` application, I noticed: 79.40ms java.interop.tools.javacallablewrappers!Java.Interop.Tools.TypeNameMappings.JavaNativeTypeManager.ToJniNameFromAttribute This method just appears to be called *a lot*, and so things I changed: * Check `type.HasCustomAttributes`, `attributeType.HasInterfaces`, and `attr.HasProperties` where appropriate. * Unroll the `System.Linq` usage one level, and use plain `foreach` * Create a `IsIJniNameProviderAttribute` method that checks against a list of known attribute types as a "fast path". * The "slow path" can continue to check for the `IJniNameProviderAttribute` interface Other changes: * Delete `#region`! After these changes, I get: 51.64ms (1.2%) 0.13ns (<0.01%) java.interop.tools.javacallablewrappers!Java.Interop.Tools.TypeNameMappings.JavaNativeTypeManager.ToJniNameFromAttribute This should save ~27ms on incremental builds of the `dotnet new maui` project template and likely even more on larger projects.
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Reviewing
dotnet-traceoutput:On a
dotnet new mauiapplication, I noticed:This method just appears to be called a lot, and so things I changed:
Check
type.HasCustomAttributes,attributeType.HasInterfaces, andattr.HasPropertieswhere appropriate.Unroll the
System.Linqusage one level, and use plainforeachCreate a
IsIJniNameProviderAttributemethod that checks against a list of known attribute types as a "fast path".The "slow path" can continue to check for the
IJniNameProviderAttributeinterfaceOther changes:
Delete
#region!Some places were not actually correct, and were returning
nullwhere they shouldcontinue;instead.After these changes, I get:
This should save ~27ms on incremental builds of the
dotnet new mauiproject template and likely even more on larger projects.