Parallelize singleton execution

Bug: 281536768
Test: manual, presubmits
Change-Id: I57fdc76ba6b277e88e196b506af87127a530fd37

41 files changed, 51 insertions, 51 deletions

diff --git a/android/androidmk.go b/android/androidmk.go
index aa411d116..62f82f247 100644
--- a/android/androidmk.go
+++ b/android/androidmk.go
@@ -42,7 +42,7 @@ func init() {
 }
 
 func RegisterAndroidMkBuildComponents(ctx RegistrationContext) {
-	ctx.RegisterSingletonType("androidmk", AndroidMkSingleton)
+	ctx.RegisterParallelSingletonType("androidmk", AndroidMkSingleton)
 }
 
 // Enable androidmk support.
diff --git a/android/api_levels.go b/android/api_levels.go
index fa919fda7..2391e6cc2 100644
--- a/android/api_levels.go
+++ b/android/api_levels.go
@@ -22,7 +22,7 @@ import (
 )
 
 func init() {
-	RegisterSingletonType("api_levels", ApiLevelsSingleton)
+	RegisterParallelSingletonType("api_levels", ApiLevelsSingleton)
 }
 
 const previewAPILevelBase = 9000
diff --git a/android/buildinfo_prop.go b/android/buildinfo_prop.go
index 46f648802..8e19ad5f4 100644
--- a/android/buildinfo_prop.go
+++ b/android/buildinfo_prop.go
@@ -23,7 +23,7 @@ import (
 
 func init() {
 	ctx := InitRegistrationContext
-	ctx.RegisterSingletonModuleType("buildinfo_prop", buildinfoPropFactory)
+	ctx.RegisterParallelSingletonModuleType("buildinfo_prop", buildinfoPropFactory)
 }
 
 type buildinfoPropProperties struct {
diff --git a/android/gen_notice.go b/android/gen_notice.go
index 091345b9f..1acc638e8 100644
--- a/android/gen_notice.go
+++ b/android/gen_notice.go
@@ -28,7 +28,7 @@ func init() {
 
 // Register the gen_notice module type.
 func RegisterGenNoticeBuildComponents(ctx RegistrationContext) {
-	ctx.RegisterSingletonType("gen_notice_build_rules", GenNoticeBuildRulesFactory)
+	ctx.RegisterParallelSingletonType("gen_notice_build_rules", GenNoticeBuildRulesFactory)
 	ctx.RegisterModuleType("gen_notice", GenNoticeFactory)
 }
 
diff --git a/android/metrics.go b/android/metrics.go
index 3d41a1d6c..63c72cd97 100644
--- a/android/metrics.go
+++ b/android/metrics.go
@@ -42,7 +42,7 @@ func readSoongMetrics(config Config) (SoongMetrics, bool) {
 }
 
 func init() {
-	RegisterSingletonType("soong_metrics", soongMetricsSingletonFactory)
+	RegisterParallelSingletonType("soong_metrics", soongMetricsSingletonFactory)
 }
 
 func soongMetricsSingletonFactory() Singleton { return soongMetricsSingleton{} }
diff --git a/android/module.go b/android/module.go
index db602a0aa..9024896e5 100644
--- a/android/module.go
+++ b/android/module.go
@@ -3724,7 +3724,7 @@ func (m *moduleContext) TargetRequiredModuleNames() []string {
 }
 
 func init() {
-	RegisterSingletonType("buildtarget", BuildTargetSingleton)
+	RegisterParallelSingletonType("buildtarget", BuildTargetSingleton)
 }
 
 func BuildTargetSingleton() Singleton {
diff --git a/android/register.go b/android/register.go
index c57964c18..64b0207e7 100644
--- a/android/register.go
+++ b/android/register.go
@@ -231,7 +231,7 @@ func (ctx *Context) registerSingletonMakeVarsProvider(makevars SingletonMakeVars
 func collateGloballyRegisteredSingletons() sortableComponents {
 	allSingletons := append(sortableComponents(nil), singletons...)
 	allSingletons = append(allSingletons,
-		singleton{pre: false, parallel: false, name: "bazeldeps", factory: BazelSingleton},
+		singleton{pre: false, parallel: true, name: "bazeldeps", factory: BazelSingleton},
 
 		// Register phony just before makevars so it can write out its phony rules as Make rules
 		singleton{pre: false, parallel: false, name: "phony", factory: phonySingletonFactory},
diff --git a/android/test_suites.go b/android/test_suites.go
index b570b2383..b48d71af6 100644
--- a/android/test_suites.go
+++ b/android/test_suites.go
@@ -15,7 +15,7 @@
 package android
 
 func init() {
-	RegisterSingletonType("testsuites", testSuiteFilesFactory)
+	RegisterParallelSingletonType("testsuites", testSuiteFilesFactory)
 }
 
 func testSuiteFilesFactory() Singleton {
diff --git a/apex/apex_singleton.go b/apex/apex_singleton.go
index ebc35cf5c..a63344fc1 100644
--- a/apex/apex_singleton.go
+++ b/apex/apex_singleton.go
@@ -27,7 +27,7 @@ func init() {
 }
 
 func registerApexDepsInfoComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("apex_depsinfo_singleton", apexDepsInfoSingletonFactory)
+	ctx.RegisterParallelSingletonType("apex_depsinfo_singleton", apexDepsInfoSingletonFactory)
 }
 
 type apexDepsInfoSingleton struct {
diff --git a/apex/key.go b/apex/key.go
index 0a7e80f8f..3010d76be 100644
--- a/apex/key.go
+++ b/apex/key.go
@@ -33,7 +33,7 @@ func init() {
 
 func registerApexKeyBuildComponents(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("apex_key", ApexKeyFactory)
-	ctx.RegisterSingletonType("apex_keys_text", apexKeysTextFactory)
+	ctx.RegisterParallelSingletonType("apex_keys_text", apexKeysTextFactory)
 }
 
 type apexKey struct {
diff --git a/bloaty/bloaty.go b/bloaty/bloaty.go
index 50f241f44..3cff60fe6 100644
--- a/bloaty/bloaty.go
+++ b/bloaty/bloaty.go
@@ -51,7 +51,7 @@ func init() {
 	pctx.VariableConfigMethod("hostPrebuiltTag", android.Config.PrebuiltOS)
 	pctx.SourcePathVariable("bloaty", "prebuilts/build-tools/${hostPrebuiltTag}/bin/bloaty")
 	pctx.HostBinToolVariable("bloatyMerger", "bloaty_merger")
-	android.RegisterSingletonType("file_metrics", fileSizesSingleton)
+	android.RegisterParallelSingletonType("file_metrics", fileSizesSingleton)
 	fileSizeMeasurerKey = blueprint.NewProvider(measuredFiles{})
 }
 
diff --git a/cc/cc.go b/cc/cc.go
index f4b565550..0e7f6c8d5 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -83,7 +83,7 @@ func RegisterCCBuildComponents(ctx android.RegistrationContext) {
 		ctx.TopDown("sabi_deps", sabiDepsMutator)
 	})
 
-	ctx.RegisterSingletonType("kythe_extract_all", kytheExtractAllFactory)
+	ctx.RegisterParallelSingletonType("kythe_extract_all", kytheExtractAllFactory)
 }
 
 // Deps is a struct containing module names of dependencies, separated by the kind of dependency.
diff --git a/cc/ccdeps.go b/cc/ccdeps.go
index 75e1faf0b..d30abbab7 100644
--- a/cc/ccdeps.go
+++ b/cc/ccdeps.go
@@ -30,7 +30,7 @@ import (
 // The info file is generated in $OUT/module_bp_cc_depend.json.
 
 func init() {
-	android.RegisterSingletonType("ccdeps_generator", ccDepsGeneratorSingleton)
+	android.RegisterParallelSingletonType("ccdeps_generator", ccDepsGeneratorSingleton)
 }
 
 func ccDepsGeneratorSingleton() android.Singleton {
diff --git a/cc/cmakelists.go b/cc/cmakelists.go
index ad130baaa..0f3f02da5 100644
--- a/cc/cmakelists.go
+++ b/cc/cmakelists.go
@@ -29,7 +29,7 @@ import (
 // structure (see variable CLionOutputProjectsDirectory for root).
 
 func init() {
-	android.RegisterSingletonType("cmakelists_generator", cMakeListsGeneratorSingleton)
+	android.RegisterParallelSingletonType("cmakelists_generator", cMakeListsGeneratorSingleton)
 }
 
 func cMakeListsGeneratorSingleton() android.Singleton {
diff --git a/cc/compdb.go b/cc/compdb.go
index ea124438e..617be1a19 100644
--- a/cc/compdb.go
+++ b/cc/compdb.go
@@ -32,7 +32,7 @@ import (
 // make SOONG_GEN_COMPDB=1 nothing to get all targets.
 
 func init() {
-	android.RegisterSingletonType("compdb_generator", compDBGeneratorSingleton)
+	android.RegisterParallelSingletonType("compdb_generator", compDBGeneratorSingleton)
 }
 
 func compDBGeneratorSingleton() android.Singleton {
diff --git a/cc/fuzz.go b/cc/fuzz.go
index dfefc11f2..f55fd5cbc 100644
--- a/cc/fuzz.go
+++ b/cc/fuzz.go
@@ -28,7 +28,7 @@ import (
 
 func init() {
 	android.RegisterModuleType("cc_fuzz", LibFuzzFactory)
-	android.RegisterSingletonType("cc_fuzz_packaging", fuzzPackagingFactory)
+	android.RegisterParallelSingletonType("cc_fuzz_packaging", fuzzPackagingFactory)
 }
 
 type FuzzProperties struct {
diff --git a/cc/ndk_abi.go b/cc/ndk_abi.go
index 3456c32bb..86166dcbb 100644
--- a/cc/ndk_abi.go
+++ b/cc/ndk_abi.go
@@ -19,8 +19,8 @@ import (
 )
 
 func init() {
-	android.RegisterSingletonType("ndk_abi_dump", NdkAbiDumpSingleton)
-	android.RegisterSingletonType("ndk_abi_diff", NdkAbiDiffSingleton)
+	android.RegisterParallelSingletonType("ndk_abi_dump", NdkAbiDumpSingleton)
+	android.RegisterParallelSingletonType("ndk_abi_diff", NdkAbiDiffSingleton)
 }
 
 func getNdkAbiDumpInstallBase(ctx android.PathContext) android.OutputPath {
diff --git a/cc/ndk_sysroot.go b/cc/ndk_sysroot.go
index dffc6c614..0cf21b65a 100644
--- a/cc/ndk_sysroot.go
+++ b/cc/ndk_sysroot.go
@@ -66,7 +66,7 @@ func RegisterNdkModuleTypes(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("ndk_library", NdkLibraryFactory)
 	ctx.RegisterModuleType("versioned_ndk_headers", versionedNdkHeadersFactory)
 	ctx.RegisterModuleType("preprocessed_ndk_headers", preprocessedNdkHeadersFactory)
-	ctx.RegisterSingletonType("ndk", NdkSingleton)
+	ctx.RegisterParallelSingletonType("ndk", NdkSingleton)
 }
 
 func getNdkInstallBase(ctx android.PathContext) android.InstallPath {
diff --git a/cc/stub_library.go b/cc/stub_library.go
index f324dcc9b..3a6d0aeaa 100644
--- a/cc/stub_library.go
+++ b/cc/stub_library.go
@@ -23,7 +23,7 @@ import (
 
 func init() {
 	// Use singleton type to gather all generated soong modules.
-	android.RegisterSingletonType("stublibraries", stubLibrariesSingleton)
+	android.RegisterParallelSingletonType("stublibraries", stubLibrariesSingleton)
 }
 
 type stubLibraries struct {
diff --git a/cc/tidy.go b/cc/tidy.go
index bbcaece24..7b123cb57 100644
--- a/cc/tidy.go
+++ b/cc/tidy.go
@@ -201,7 +201,7 @@ func (tidy *tidyFeature) flags(ctx ModuleContext, flags Flags) Flags {
 }
 
 func init() {
-	android.RegisterSingletonType("tidy_phony_targets", TidyPhonySingleton)
+	android.RegisterParallelSingletonType("tidy_phony_targets", TidyPhonySingleton)
 }
 
 // This TidyPhonySingleton generates both tidy-* and obj-* phony targets for C/C++ files.
diff --git a/cc/vndk.go b/cc/vndk.go
index 9b70004c5..7a2286eb1 100644
--- a/cc/vndk.go
+++ b/cc/vndk.go
@@ -417,16 +417,16 @@ func VndkMutator(mctx android.BottomUpMutatorContext) {
 
 func init() {
 	RegisterVndkLibraryTxtTypes(android.InitRegistrationContext)
-	android.RegisterSingletonType("vndk-snapshot", VndkSnapshotSingleton)
+	android.RegisterParallelSingletonType("vndk-snapshot", VndkSnapshotSingleton)
 }
 
 func RegisterVndkLibraryTxtTypes(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonModuleType("llndk_libraries_txt", llndkLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndksp_libraries_txt", vndkSPLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndkcore_libraries_txt", vndkCoreLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndkprivate_libraries_txt", vndkPrivateLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndkproduct_libraries_txt", vndkProductLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndkcorevariant_libraries_txt", vndkUsingCoreVariantLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("llndk_libraries_txt", llndkLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndksp_libraries_txt", vndkSPLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndkcore_libraries_txt", vndkCoreLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndkprivate_libraries_txt", vndkPrivateLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndkproduct_libraries_txt", vndkProductLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndkcorevariant_libraries_txt", vndkUsingCoreVariantLibrariesTxtFactory)
 }
 
 type vndkLibrariesTxt struct {
diff --git a/dexpreopt/config.go b/dexpreopt/config.go
index 0cc3bd63b..e61ebe624 100644
--- a/dexpreopt/config.go
+++ b/dexpreopt/config.go
@@ -197,7 +197,7 @@ var pctx = android.NewPackageContext("android/soong/dexpreopt")
 
 func init() {
 	pctx.Import("android/soong/android")
-	android.RegisterSingletonType("dexpreopt-soong-config", func() android.Singleton {
+	android.RegisterParallelSingletonType("dexpreopt-soong-config", func() android.Singleton {
 		return &globalSoongConfigSingleton{}
 	})
 }
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index f477f404e..116c833e0 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -465,7 +465,7 @@ func dexpreoptBootJarsFactory() android.SingletonModule {
 }
 
 func RegisterDexpreoptBootJarsComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonModuleType("dex_bootjars", dexpreoptBootJarsFactory)
+	ctx.RegisterParallelSingletonModuleType("dex_bootjars", dexpreoptBootJarsFactory)
 }
 
 func SkipDexpreoptBootJars(ctx android.PathContext) bool {
diff --git a/java/dexpreopt_check.go b/java/dexpreopt_check.go
index 83c088cd4..7499481de 100644
--- a/java/dexpreopt_check.go
+++ b/java/dexpreopt_check.go
@@ -28,7 +28,7 @@ func init() {
 }
 
 func RegisterDexpreoptCheckBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonModuleType("dexpreopt_systemserver_check", dexpreoptSystemserverCheckFactory)
+	ctx.RegisterParallelSingletonModuleType("dexpreopt_systemserver_check", dexpreoptSystemserverCheckFactory)
 }
 
 // A build-time check to verify if all compilation artifacts of system server jars are installed
diff --git a/java/fuzz.go b/java/fuzz.go
index 4aa6dbffd..e44669bce 100644
--- a/java/fuzz.go
+++ b/java/fuzz.go
@@ -38,7 +38,7 @@ func init() {
 
 func RegisterJavaFuzzBuildComponents(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("java_fuzz", JavaFuzzFactory)
-	ctx.RegisterSingletonType("java_fuzz_packaging", javaFuzzPackagingFactory)
+	ctx.RegisterParallelSingletonType("java_fuzz_packaging", javaFuzzPackagingFactory)
 }
 
 type JavaFuzzTest struct {
diff --git a/java/hiddenapi_singleton.go b/java/hiddenapi_singleton.go
index 52934a327..d4ee4fc9f 100644
--- a/java/hiddenapi_singleton.go
+++ b/java/hiddenapi_singleton.go
@@ -25,7 +25,7 @@ func init() {
 }
 
 func RegisterHiddenApiSingletonComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("hiddenapi", hiddenAPISingletonFactory)
+	ctx.RegisterParallelSingletonType("hiddenapi", hiddenAPISingletonFactory)
 }
 
 var PrepareForTestWithHiddenApiBuildComponents = android.FixtureRegisterWithContext(RegisterHiddenApiSingletonComponents)
diff --git a/java/java.go b/java/java.go
index bb8fe62aa..33846bec6 100644
--- a/java/java.go
+++ b/java/java.go
@@ -73,8 +73,8 @@ func registerJavaBuildComponents(ctx android.RegistrationContext) {
 		ctx.BottomUp("jacoco_deps", jacocoDepsMutator).Parallel()
 	})
 
-	ctx.RegisterSingletonType("logtags", LogtagsSingleton)
-	ctx.RegisterSingletonType("kythe_java_extract", kytheExtractJavaFactory)
+	ctx.RegisterParallelSingletonType("logtags", LogtagsSingleton)
+	ctx.RegisterParallelSingletonType("kythe_java_extract", kytheExtractJavaFactory)
 }
 
 func RegisterJavaSdkMemberTypes() {
diff --git a/java/jdeps.go b/java/jdeps.go
index a52b86708..4c8c11c5d 100644
--- a/java/jdeps.go
+++ b/java/jdeps.go
@@ -26,7 +26,7 @@ import (
 // called. Dependency info file is generated in $OUT/module_bp_java_depend.json.
 
 func init() {
-	android.RegisterSingletonType("jdeps_generator", jDepsGeneratorSingleton)
+	android.RegisterParallelSingletonType("jdeps_generator", jDepsGeneratorSingleton)
 }
 
 func jDepsGeneratorSingleton() android.Singleton {
diff --git a/java/lint.go b/java/lint.go
index 40ef48416..a0f99707a 100644
--- a/java/lint.go
+++ b/java/lint.go
@@ -705,7 +705,7 @@ func (l *lintSingleton) MakeVars(ctx android.MakeVarsContext) {
 var _ android.SingletonMakeVarsProvider = (*lintSingleton)(nil)
 
 func init() {
-	android.RegisterSingletonType("lint",
+	android.RegisterParallelSingletonType("lint",
 		func() android.Singleton { return &lintSingleton{} })
 
 	registerLintBuildComponents(android.InitRegistrationContext)
diff --git a/java/platform_bootclasspath.go b/java/platform_bootclasspath.go
index 07fb92cfe..0d4db7ca1 100644
--- a/java/platform_bootclasspath.go
+++ b/java/platform_bootclasspath.go
@@ -26,7 +26,7 @@ func init() {
 }
 
 func registerPlatformBootclasspathBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonModuleType("platform_bootclasspath", platformBootclasspathFactory)
+	ctx.RegisterParallelSingletonModuleType("platform_bootclasspath", platformBootclasspathFactory)
 }
 
 // The tags used for the dependencies between the platform bootclasspath and any configured boot
diff --git a/java/platform_compat_config.go b/java/platform_compat_config.go
index d41729150..2197304a5 100644
--- a/java/platform_compat_config.go
+++ b/java/platform_compat_config.go
@@ -36,7 +36,7 @@ var CompatConfigSdkMemberType = &compatConfigMemberType{
 }
 
 func registerPlatformCompatConfigBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("platform_compat_config_singleton", platformCompatConfigSingletonFactory)
+	ctx.RegisterParallelSingletonType("platform_compat_config_singleton", platformCompatConfigSingletonFactory)
 	ctx.RegisterModuleType("platform_compat_config", PlatformCompatConfigFactory)
 	ctx.RegisterModuleType("prebuilt_platform_compat_config", prebuiltCompatConfigFactory)
 	ctx.RegisterModuleType("global_compat_config", globalCompatConfigFactory)
diff --git a/java/sdk.go b/java/sdk.go
index 8b4918add..7fa604fdb 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -28,7 +28,7 @@ import (
 
 func init() {
 	android.RegisterPreSingletonType("sdk_versions", sdkPreSingletonFactory)
-	android.RegisterSingletonType("sdk", sdkSingletonFactory)
+	android.RegisterParallelSingletonType("sdk", sdkSingletonFactory)
 	android.RegisterMakeVarsProvider(pctx, sdkMakeVars)
 }
 
diff --git a/multitree/metadata.go b/multitree/metadata.go
index 3fd721599..0eb0efc95 100644
--- a/multitree/metadata.go
+++ b/multitree/metadata.go
@@ -20,7 +20,7 @@ import (
 )
 
 func init() {
-	android.RegisterSingletonType("update-meta", UpdateMetaSingleton)
+	android.RegisterParallelSingletonType("update-meta", UpdateMetaSingleton)
 }
 
 func UpdateMetaSingleton() android.Singleton {
diff --git a/provenance/provenance_singleton.go b/provenance/provenance_singleton.go
index fbb6212ff..5d27c0cf4 100644
--- a/provenance/provenance_singleton.go
+++ b/provenance/provenance_singleton.go
@@ -51,7 +51,7 @@ func init() {
 }
 
 func RegisterProvenanceSingleton(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("provenance_metadata_singleton", provenanceInfoSingletonFactory)
+	ctx.RegisterParallelSingletonType("provenance_metadata_singleton", provenanceInfoSingletonFactory)
 }
 
 var PrepareForTestWithProvenanceSingleton = android.FixtureRegisterWithContext(RegisterProvenanceSingleton)
diff --git a/rust/doc.go b/rust/doc.go
index fe3581b42..6970d7979 100644
--- a/rust/doc.go
+++ b/rust/doc.go
@@ -19,7 +19,7 @@ import (
 )
 
 func init() {
-	android.RegisterSingletonType("rustdoc", RustdocSingleton)
+	android.RegisterParallelSingletonType("rustdoc", RustdocSingleton)
 }
 
 func RustdocSingleton() android.Singleton {
diff --git a/rust/project_json.go b/rust/project_json.go
index fe259d6c2..40aa7c736 100644
--- a/rust/project_json.go
+++ b/rust/project_json.go
@@ -74,7 +74,7 @@ func rustProjectGeneratorSingleton() android.Singleton {
 }
 
 func init() {
-	android.RegisterSingletonType("rust_project_generator", rustProjectGeneratorSingleton)
+	android.RegisterParallelSingletonType("rust_project_generator", rustProjectGeneratorSingleton)
 }
 
 // sourceProviderVariantSource returns the path to the source file if this
diff --git a/rust/rust.go b/rust/rust.go
index dc53cc028..4324ecbb9 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -45,7 +45,7 @@ func init() {
 	})
 	pctx.Import("android/soong/rust/config")
 	pctx.ImportAs("cc_config", "android/soong/cc/config")
-	android.InitRegistrationContext.RegisterSingletonType("kythe_rust_extract", kytheExtractRustFactory)
+	android.InitRegistrationContext.RegisterParallelSingletonType("kythe_rust_extract", kytheExtractRustFactory)
 }
 
 type Flags struct {
diff --git a/rust/testing.go b/rust/testing.go
index 0a6a870d8..7f3056954 100644
--- a/rust/testing.go
+++ b/rust/testing.go
@@ -200,8 +200,8 @@ func registerRequiredBuildComponentsForTest(ctx android.RegistrationContext) {
 		ctx.BottomUp("rust_stdlinkage", LibstdMutator).Parallel()
 		ctx.BottomUp("rust_begin", BeginMutator).Parallel()
 	})
-	ctx.RegisterSingletonType("rust_project_generator", rustProjectGeneratorSingleton)
-	ctx.RegisterSingletonType("kythe_rust_extract", kytheExtractRustFactory)
+	ctx.RegisterParallelSingletonType("rust_project_generator", rustProjectGeneratorSingleton)
+	ctx.RegisterParallelSingletonType("kythe_rust_extract", kytheExtractRustFactory)
 	ctx.PostDepsMutators(func(ctx android.RegisterMutatorsContext) {
 		ctx.BottomUp("rust_sanitizers", rustSanitizerRuntimeMutator).Parallel()
 	})
diff --git a/snapshot/host_fake_snapshot.go b/snapshot/host_fake_snapshot.go
index b04657d3d..c4cfbb5ce 100644
--- a/snapshot/host_fake_snapshot.go
+++ b/snapshot/host_fake_snapshot.go
@@ -75,7 +75,7 @@ type hostSnapshotFakeJsonFlags struct {
 }
 
 func registerHostSnapshotComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("host-fake-snapshot", HostToolsFakeAndroidSingleton)
+	ctx.RegisterParallelSingletonType("host-fake-snapshot", HostToolsFakeAndroidSingleton)
 }
 
 type hostFakeSingleton struct {
diff --git a/snapshot/recovery_snapshot.go b/snapshot/recovery_snapshot.go
index ac002be9c..8ff59cbcf 100644
--- a/snapshot/recovery_snapshot.go
+++ b/snapshot/recovery_snapshot.go
@@ -68,7 +68,7 @@ var RecoverySnapshotImageName = "recovery"
 type RecoverySnapshotImage struct{}
 
 func (RecoverySnapshotImage) Init(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("recovery-snapshot", RecoverySnapshotSingleton)
+	ctx.RegisterParallelSingletonType("recovery-snapshot", RecoverySnapshotSingleton)
 }
 
 func (RecoverySnapshotImage) RegisterAdditionalModule(ctx android.RegistrationContext, name string, factory android.ModuleFactory) {
diff --git a/snapshot/vendor_snapshot.go b/snapshot/vendor_snapshot.go
index 8f7b8c215..4484c855d 100644
--- a/snapshot/vendor_snapshot.go
+++ b/snapshot/vendor_snapshot.go
@@ -78,8 +78,8 @@ var VendorSnapshotImageName = "vendor"
 type VendorSnapshotImage struct{}
 
 func (VendorSnapshotImage) Init(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("vendor-snapshot", VendorSnapshotSingleton)
-	ctx.RegisterSingletonType("vendor-fake-snapshot", VendorFakeSnapshotSingleton)
+	ctx.RegisterParallelSingletonType("vendor-snapshot", VendorSnapshotSingleton)
+	ctx.RegisterParallelSingletonType("vendor-fake-snapshot", VendorFakeSnapshotSingleton)
 }
 
 func (VendorSnapshotImage) RegisterAdditionalModule(ctx android.RegistrationContext, name string, factory android.ModuleFactory) {