Don't create a new module for bp2build conversion.
A performance improvement for bp2build as Blueprint/Soong no longer have
the overhead of additional modules. The creation of these modules
results in:
* traversal of additional modules for each subsequent mutator
* synchronization over a go channel to collect newly created modules:
https://cs.android.com/android/platform/superproject/+/master:build/blueprint/context.go;l=2594,2600;drc=1602226f23181b8c3fbfcaf3358f0297e839d7d3
We avoid both of these by storing the information directly in the
underlying module.
Also as a fringe benefit, removes some necessary boilerplate for
conversion.
For benchmarks, reduces runtime ~1% for 1% converted, ~24% for 100%
converted. See more: go/benchmarks-for-https:-r.android.com-1792714
Test: ran benchmarks/tests in bp2build
Test: build/bazel/ci/bp2build.sh
Change-Id: Ie9273b8cbab5bc6edac1728067ce184382feb211
diff --git a/android/filegroup.go b/android/filegroup.go
index 97dd136..54d01d3 100644
--- a/android/filegroup.go
+++ b/android/filegroup.go
@@ -34,24 +34,6 @@
Srcs bazel.LabelListAttribute
}
-type bazelFilegroup struct {
- BazelTargetModuleBase
- bazelFilegroupAttributes
-}
-
-func BazelFileGroupFactory() Module {
- module := &bazelFilegroup{}
- module.AddProperties(&module.bazelFilegroupAttributes)
- InitBazelTargetModule(module)
- return module
-}
-
-func (bfg *bazelFilegroup) Name() string {
- return bfg.BaseModuleName()
-}
-
-func (bfg *bazelFilegroup) GenerateAndroidBuildActions(ctx ModuleContext) {}
-
func FilegroupBp2Build(ctx TopDownMutatorContext) {
fg, ok := ctx.Module().(*fileGroup)
if !ok || !fg.ConvertWithBp2build(ctx) {
@@ -69,7 +51,7 @@
Bzl_load_location: "//build/bazel/rules:filegroup.bzl",
}
- ctx.CreateBazelTargetModule(BazelFileGroupFactory, fg.Name(), props, attrs)
+ ctx.CreateBazelTargetModule(fg.Name(), props, attrs)
}
type fileGroupProperties struct {