Use the profiles in the APEX to dexpreopt system server jars.

After this change, if "profile_guided: true" is set, profile-guided
compilation will be enabled for the jar and the ".prof" file next to
the jar in the APEX ("javalib/<name>.jar.prof") will be used as the
profile when dexpreopting for the prebuilt APEX.

Bug: 241823638
Test: m nothing
Test: -
  1. (on internal master) Patch aosp/2426453.
  2. Build the APEX bundle and the module SDK of com.android.wifi
  3. (on tm-dev) Patch this CL and aosp/2141972.
  4. Copy the APEX bundle and the module SDK built on step 2 to the
     source tree
  5. Disable hiddenapi check
  6. lunch cf_x86_64_phone-userdebug && m MODULE_BUILD_FROM_SOURCE=false com.google.android.wifi
  7. cat out/soong/.intermediates/prebuilts/module_sdk/Wifi/current/prebuilt_service-wifi/android_common_com.android.wifi/dexpreopt/oat/x86_64/javalib.invocation
  8. See the profile being used.
Change-Id: I55a5a295e9c5d6f0564afb139c5fb7da91ab8cae

apex/apex.go

@@ -1769,7 +1769,7 @@ func apexFileForJavaModuleWithFile(ctx android.BaseModuleContext, module javaMod
 
 func apexFileForJavaModuleProfile(ctx android.BaseModuleContext, module javaModule) *apexFile {
 	if dexpreopter, ok := module.(java.DexpreopterInterface); ok {
-		if profilePathOnHost := dexpreopter.ProfilePathOnHost(); profilePathOnHost != nil {
+		if profilePathOnHost := dexpreopter.OutputProfilePathOnHost(); profilePathOnHost != nil {
 			dirInApex := "javalib"
 			af := newApexFile(ctx, profilePathOnHost, module.BaseModuleName()+"-profile", dirInApex, etc, nil)
 			af.customStem = module.Stem() + ".jar.prof"

apex/systemserver_classpath_fragment_test.go

@@ -222,7 +222,7 @@ func TestPrebuiltSystemserverclasspathFragmentContents(t *testing.T) {
 	result := android.GroupFixturePreparers(
 		prepareForTestWithSystemserverclasspathFragment,
 		prepareForTestWithMyapex,
-		dexpreopt.FixtureSetApexSystemServerJars("myapex:foo"),
+		dexpreopt.FixtureSetApexSystemServerJars("myapex:foo", "myapex:bar"),
 	).RunTestWithBp(t, `
 		prebuilt_apex {
 			name: "myapex",
@@ -245,11 +245,23 @@ func TestPrebuiltSystemserverclasspathFragmentContents(t *testing.T) {
 			],
 		}
 
+		java_import {
+			name: "bar",
+			jars: ["bar.jar"],
+			dex_preopt: {
+				profile_guided: true,
+			},
+			apex_available: [
+				"myapex",
+			],
+		}
+
 		prebuilt_systemserverclasspath_fragment {
 			name: "mysystemserverclasspathfragment",
 			prefer: true,
 			contents: [
 				"foo",
+				"bar",
 			],
 			apex_available: [
 				"myapex",
@@ -257,15 +269,27 @@ func TestPrebuiltSystemserverclasspathFragmentContents(t *testing.T) {
 		}
 	`)
 
-	java.CheckModuleDependencies(t, result.TestContext, "myapex", "android_common_myapex", []string{
+	ctx := result.TestContext
+
+	java.CheckModuleDependencies(t, ctx, "myapex", "android_common_myapex", []string{
 		`myapex.apex.selector`,
 		`prebuilt_mysystemserverclasspathfragment`,
 	})
 
-	java.CheckModuleDependencies(t, result.TestContext, "mysystemserverclasspathfragment", "android_common_myapex", []string{
+	java.CheckModuleDependencies(t, ctx, "mysystemserverclasspathfragment", "android_common_myapex", []string{
 		`myapex.deapexer`,
+		`prebuilt_bar`,
 		`prebuilt_foo`,
 	})
+
+	ensureExactDeapexedContents(t, ctx, "myapex", "android_common", []string{
+		"javalib/foo.jar",
+		"javalib/bar.jar",
+		"javalib/bar.jar.prof",
+	})
+
+	assertProfileGuided(t, ctx, "foo", "android_common_myapex", false)
+	assertProfileGuided(t, ctx, "bar", "android_common_myapex", true)
 }
 
 func TestSystemserverclasspathFragmentStandaloneContents(t *testing.T) {
@@ -354,7 +378,7 @@ func TestPrebuiltStandaloneSystemserverclasspathFragmentContents(t *testing.T) {
 	result := android.GroupFixturePreparers(
 		prepareForTestWithSystemserverclasspathFragment,
 		prepareForTestWithMyapex,
-		dexpreopt.FixtureSetApexStandaloneSystemServerJars("myapex:foo"),
+		dexpreopt.FixtureSetApexStandaloneSystemServerJars("myapex:foo", "myapex:bar"),
 	).RunTestWithBp(t, `
 		prebuilt_apex {
 			name: "myapex",
@@ -377,11 +401,23 @@ func TestPrebuiltStandaloneSystemserverclasspathFragmentContents(t *testing.T) {
 			],
 		}
 
+		java_import {
+			name: "bar",
+			jars: ["bar.jar"],
+			dex_preopt: {
+				profile_guided: true,
+			},
+			apex_available: [
+				"myapex",
+			],
+		}
+
 		prebuilt_systemserverclasspath_fragment {
 			name: "mysystemserverclasspathfragment",
 			prefer: true,
 			standalone_contents: [
 				"foo",
+				"bar",
 			],
 			apex_available: [
 				"myapex",
@@ -389,10 +425,22 @@ func TestPrebuiltStandaloneSystemserverclasspathFragmentContents(t *testing.T) {
 		}
 	`)
 
-	java.CheckModuleDependencies(t, result.TestContext, "mysystemserverclasspathfragment", "android_common_myapex", []string{
+	ctx := result.TestContext
+
+	java.CheckModuleDependencies(t, ctx, "mysystemserverclasspathfragment", "android_common_myapex", []string{
 		`myapex.deapexer`,
+		`prebuilt_bar`,
 		`prebuilt_foo`,
 	})
+
+	ensureExactDeapexedContents(t, ctx, "myapex", "android_common", []string{
+		"javalib/foo.jar",
+		"javalib/bar.jar",
+		"javalib/bar.jar.prof",
+	})
+
+	assertProfileGuided(t, ctx, "foo", "android_common_myapex", false)
+	assertProfileGuided(t, ctx, "bar", "android_common_myapex", true)
 }
 
 func assertProfileGuided(t *testing.T, ctx *android.TestContext, moduleName string, variant string, expected bool) {

java/dexpreopt.go

@@ -23,11 +23,24 @@ import (
 )
 
 type DexpreopterInterface interface {
-	IsInstallable() bool // Structs that embed dexpreopter must implement this.
+	// True if the java module is to be dexed and installed on devices.
+	// Structs that embed dexpreopter must implement this.
+	IsInstallable() bool
+
+	// True if dexpreopt is disabled for the java module.
 	dexpreoptDisabled(ctx android.BaseModuleContext) bool
+
+	// If the java module is to be installed into an APEX, this list contains information about the
+	// dexpreopt outputs to be installed on devices. Note that these dexpreopt outputs are installed
+	// outside of the APEX.
 	DexpreoptBuiltInstalledForApex() []dexpreopterInstall
+
+	// The Make entries to install the dexpreopt outputs. Derived from
+	// `DexpreoptBuiltInstalledForApex`.
 	AndroidMkEntriesForApex() []android.AndroidMkEntries
-	ProfilePathOnHost() android.Path
+
+	// See `dexpreopter.outputProfilePathOnHost`.
+	OutputProfilePathOnHost() android.Path
 }
 
 type dexpreopterInstall struct {
@@ -106,8 +119,13 @@ type dexpreopter struct {
 	//   dexpreopt another partition).
 	configPath android.WritablePath
 
-	// The path to the profile on host.
+	// The path to the profile on host that dexpreopter generates. This is used as the input for
-	profilePathOnHost android.Path
+	// dex2oat.
+	outputProfilePathOnHost android.Path
+
+	// The path to the profile that dexpreopter accepts. It must be in the binary format. If this is
+	// set, it overrides the profile settings in `dexpreoptProperties`.
+	inputProfilePathOnHost android.Path
 }
 
 type DexpreoptProperties struct {
@@ -308,7 +326,9 @@ func (d *dexpreopter) dexpreopt(ctx android.ModuleContext, dexJarFile android.Wr
 	var profileClassListing android.OptionalPath
 	var profileBootListing android.OptionalPath
 	profileIsTextListing := false
-	if BoolDefault(d.dexpreoptProperties.Dex_preopt.Profile_guided, true) {
+	if d.inputProfilePathOnHost != nil {
+		profileClassListing = android.OptionalPathForPath(d.inputProfilePathOnHost)
+	} else if BoolDefault(d.dexpreoptProperties.Dex_preopt.Profile_guided, true) && !forPrebuiltApex(ctx) {
 		// If dex_preopt.profile_guided is not set, default it based on the existence of the
 		// dexprepot.profile option or the profile class listing.
 		if String(d.dexpreoptProperties.Dex_preopt.Profile) != "" {
@@ -389,7 +409,7 @@ func (d *dexpreopter) dexpreopt(ctx android.ModuleContext, dexJarFile android.Wr
 		isProfile := strings.HasSuffix(installBase, ".prof")
 
 		if isProfile {
-			d.profilePathOnHost = install.From
+			d.outputProfilePathOnHost = install.From
 		}
 
 		if isApexSystemServerJar {
@@ -431,6 +451,6 @@ func (d *dexpreopter) AndroidMkEntriesForApex() []android.AndroidMkEntries {
 	return entries
 }
 
-func (d *dexpreopter) ProfilePathOnHost() android.Path {
+func (d *dexpreopter) OutputProfilePathOnHost() android.Path {
-	return d.profilePathOnHost
+	return d.outputProfilePathOnHost
 }

java/java.go

@@ -2002,7 +2002,8 @@ func (j *Import) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 			if di == nil {
 				return // An error has been reported by FindDeapexerProviderForModule.
 			}
-			if dexOutputPath := di.PrebuiltExportPath(apexRootRelativePathToJavaLib(j.BaseModuleName())); dexOutputPath != nil {
+			dexJarFileApexRootRelative := apexRootRelativePathToJavaLib(j.BaseModuleName())
+			if dexOutputPath := di.PrebuiltExportPath(dexJarFileApexRootRelative); dexOutputPath != nil {
 				dexJarFile := makeDexJarPathFromPath(dexOutputPath)
 				j.dexJarFile = dexJarFile
 				installPath := android.PathForModuleInPartitionInstall(ctx, "apex", ai.ApexVariationName, apexRootRelativePathToJavaLib(j.BaseModuleName()))
@@ -2011,6 +2012,11 @@ func (j *Import) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 				j.dexpreopter.installPath = j.dexpreopter.getInstallPath(ctx, installPath)
 				setUncompressDex(ctx, &j.dexpreopter, &j.dexer)
 				j.dexpreopter.uncompressedDex = *j.dexProperties.Uncompress_dex
+
+				if profilePath := di.PrebuiltExportPath(dexJarFileApexRootRelative + ".prof"); profilePath != nil {
+					j.dexpreopter.inputProfilePathOnHost = profilePath
+				}
+
 				j.dexpreopt(ctx, dexOutputPath)
 
 				// Initialize the hiddenapi structure.
@@ -2145,11 +2151,16 @@ func (j *Import) ShouldSupportSdkVersion(ctx android.BaseModuleContext,
 // requiredFilesFromPrebuiltApexForImport returns information about the files that a java_import or
 // java_sdk_library_import with the specified base module name requires to be exported from a
 // prebuilt_apex/apex_set.
-func requiredFilesFromPrebuiltApexForImport(name string) []string {
+func requiredFilesFromPrebuiltApexForImport(name string, d *dexpreopter) []string {
+	dexJarFileApexRootRelative := apexRootRelativePathToJavaLib(name)
 	// Add the dex implementation jar to the set of exported files.
-	return []string{
+	files := []string{
-		apexRootRelativePathToJavaLib(name),
+		dexJarFileApexRootRelative,
 	}
+	if BoolDefault(d.importDexpreoptProperties.Dex_preopt.Profile_guided, false) {
+		files = append(files, dexJarFileApexRootRelative+".prof")
+	}
+	return files
 }
 
 // apexRootRelativePathToJavaLib returns the path, relative to the root of the apex's contents, for
@@ -2162,7 +2173,7 @@ var _ android.RequiredFilesFromPrebuiltApex = (*Import)(nil)
 
 func (j *Import) RequiredFilesFromPrebuiltApex(_ android.BaseModuleContext) []string {
 	name := j.BaseModuleName()
-	return requiredFilesFromPrebuiltApexForImport(name)
+	return requiredFilesFromPrebuiltApexForImport(name, &j.dexpreopter)
 }
 
 // Add compile time check for interface implementation

java/sdk_library.go

@@ -2445,18 +2445,24 @@ func (module *SdkLibraryImport) GenerateAndroidBuildActions(ctx android.ModuleCo
 			if di == nil {
 				return // An error has been reported by FindDeapexerProviderForModule.
 			}
-			if dexOutputPath := di.PrebuiltExportPath(apexRootRelativePathToJavaLib(module.BaseModuleName())); dexOutputPath != nil {
+			dexJarFileApexRootRelative := apexRootRelativePathToJavaLib(module.BaseModuleName())
+			if dexOutputPath := di.PrebuiltExportPath(dexJarFileApexRootRelative); dexOutputPath != nil {
 				dexJarFile := makeDexJarPathFromPath(dexOutputPath)
 				module.dexJarFile = dexJarFile
 				installPath := android.PathForModuleInPartitionInstall(
-					ctx, "apex", ai.ApexVariationName, apexRootRelativePathToJavaLib(module.BaseModuleName()))
+					ctx, "apex", ai.ApexVariationName, dexJarFileApexRootRelative)
 				module.installFile = installPath
 				module.initHiddenAPI(ctx, dexJarFile, module.findScopePaths(apiScopePublic).stubsImplPath[0], nil)
 
-				// Dexpreopting.
 				module.dexpreopter.installPath = module.dexpreopter.getInstallPath(ctx, installPath)
 				module.dexpreopter.isSDKLibrary = true
 				module.dexpreopter.uncompressedDex = shouldUncompressDex(ctx, &module.dexpreopter)
+
+				if profilePath := di.PrebuiltExportPath(dexJarFileApexRootRelative + ".prof"); profilePath != nil {
+					module.dexpreopter.inputProfilePathOnHost = profilePath
+				}
+
+				// Dexpreopting.
 				module.dexpreopt(ctx, dexOutputPath)
 			} else {
 				// This should never happen as a variant for a prebuilt_apex is only created if the
@@ -2585,7 +2591,7 @@ var _ android.RequiredFilesFromPrebuiltApex = (*SdkLibraryImport)(nil)
 
 func (module *SdkLibraryImport) RequiredFilesFromPrebuiltApex(ctx android.BaseModuleContext) []string {
 	name := module.BaseModuleName()
-	return requiredFilesFromPrebuiltApexForImport(name)
+	return requiredFilesFromPrebuiltApexForImport(name, &module.dexpreopter)
 }
 
 // java_sdk_library_xml