Support for install multiple boot images.

Bug: 119800099
Test: m && /system/framework/arm/apex*.art files exist
Change-Id: I8b708a0c495193e5455e03eaa575ce55a482a95d

3 files changed, 110 insertions, 50 deletions

diff --git a/dexpreopt/config.go b/dexpreopt/config.go
index 99814019..15008b96 100644
--- a/dexpreopt/config.go
+++ b/dexpreopt/config.go
@@ -31,6 +31,8 @@ type GlobalConfig struct {
 
 	OnlyPreoptBootImageAndSystemServer bool // only preopt jars in the boot image or system server
 
+	GenerateApexImage bool // generate an extra boot image only containing jars from the runtime apex
+
 	HasSystemOther        bool     // store odex files that match PatternsOnSystemOther on the system_other partition
 	PatternsOnSystemOther []string // patterns (using '%' to denote a prefix match) to put odex on the system_other partition
 
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index 0ad7a275..a93d1804 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -70,7 +70,7 @@ type bootImage struct {
 
 func newBootImage(ctx android.PathContext, config bootImageConfig) *bootImage {
 	image := &bootImage{
-		bootImageConfig: defaultBootImageConfig(ctx),
+		bootImageConfig: config,
 
 		installs:           make(map[android.ArchType]android.RuleBuilderInstalls),
 		vdexInstalls:       make(map[android.ArchType]android.RuleBuilderInstalls),
@@ -111,6 +111,7 @@ func skipDexpreoptBootJars(ctx android.PathContext) bool {
 
 type dexpreoptBootJars struct {
 	defaultBootImage *bootImage
+	otherImages      []*bootImage
 }
 
 // dexpreoptBoot singleton rules
@@ -131,7 +132,11 @@ func (d *dexpreoptBootJars) GenerateBuildActions(ctx android.SingletonContext) {
 		return
 	}
 
+	// Always create the default boot image first, to get a unique profile rule for all images.
 	d.defaultBootImage = buildBootImage(ctx, defaultBootImageConfig(ctx))
+	if global.GenerateApexImage {
+		d.otherImages = append(d.otherImages, buildBootImage(ctx, apexBootImageConfig(ctx)))
+	}
 }
 
 // buildBootImage takes a bootImageConfig, creates rules to build it, and returns a *bootImage.
@@ -199,7 +204,7 @@ func buildBootImageRuleForArch(ctx android.SingletonContext, image *bootImage,
 	global := dexpreoptGlobalConfig(ctx)
 
 	symbolsDir := image.symbolsDir.Join(ctx, "system/framework", arch.String())
-	symbolsFile := symbolsDir.Join(ctx, "boot.oat")
+	symbolsFile := symbolsDir.Join(ctx, image.name+".oat")
 	outputDir := image.dir.Join(ctx, "system/framework", arch.String())
 	outputPath := image.images[arch]
 	oatLocation := pathtools.ReplaceExtension(dexpreopt.PathToLocation(outputPath, arch), "oat")
@@ -283,8 +288,8 @@ func buildBootImageRuleForArch(ctx android.SingletonContext, image *bootImage,
 	var unstrippedInstalls android.RuleBuilderInstalls
 
 	// dex preopt on the bootclasspath produces multiple files.  The first dex file
-	// is converted into to boot.art (to match the legacy assumption that boot.art
-	// exists), and the rest are converted to boot-<name>.art.
+	// is converted into to 'name'.art (to match the legacy assumption that 'name'.art
+	// exists), and the rest are converted to 'name'-<jar>.art.
 	// In addition, each .art file has an associated .oat and .vdex file, and an
 	// unstripped .oat file
 	for i, m := range image.modules {
@@ -330,72 +335,79 @@ It is likely that the boot classpath is inconsistent.
 Rebuild with ART_BOOT_IMAGE_EXTRA_ARGS="--runtime-arg -verbose:verifier" to see verification errors.`
 
 func bootImageProfileRule(ctx android.SingletonContext, image *bootImage, missingDeps []string) android.WritablePath {
-	global := dexpreoptGlobalConfig(ctx)
+	return ctx.Config().Once(bootImageProfileRuleKey, func() interface{} {
+		global := dexpreoptGlobalConfig(ctx)
 
-	if !global.UseProfileForBootImage || ctx.Config().IsPdkBuild() || ctx.Config().UnbundledBuild() {
-		return nil
-	}
+		if !global.UseProfileForBootImage || ctx.Config().IsPdkBuild() || ctx.Config().UnbundledBuild() {
+			return nil
+		}
 
-	tools := global.Tools
+		tools := global.Tools
 
-	rule := android.NewRuleBuilder()
-	rule.MissingDeps(missingDeps)
+		rule := android.NewRuleBuilder()
+		rule.MissingDeps(missingDeps)
 
-	var bootImageProfile android.Path
-	if len(global.BootImageProfiles) > 1 {
-		combinedBootImageProfile := image.dir.Join(ctx, "boot-image-profile.txt")
-		rule.Command().Text("cat").Inputs(global.BootImageProfiles).Text(">").Output(combinedBootImageProfile)
-		bootImageProfile = combinedBootImageProfile
-	} else if len(global.BootImageProfiles) == 1 {
-		bootImageProfile = global.BootImageProfiles[0]
-	} else {
-		// If not set, use the default.  Some branches like master-art-host don't have frameworks/base, so manually
-		// handle the case that the default is missing.  Those branches won't attempt to build the profile rule,
-		// and if they do they'll get a missing deps error.
-		defaultProfile := "frameworks/base/config/boot-image-profile.txt"
-		path := android.ExistentPathForSource(ctx, defaultProfile)
-		if path.Valid() {
-			bootImageProfile = path.Path()
+		var bootImageProfile android.Path
+		if len(global.BootImageProfiles) > 1 {
+			combinedBootImageProfile := image.dir.Join(ctx, "boot-image-profile.txt")
+			rule.Command().Text("cat").Inputs(global.BootImageProfiles).Text(">").Output(combinedBootImageProfile)
+			bootImageProfile = combinedBootImageProfile
+		} else if len(global.BootImageProfiles) == 1 {
+			bootImageProfile = global.BootImageProfiles[0]
 		} else {
-			missingDeps = append(missingDeps, defaultProfile)
-			bootImageProfile = android.PathForOutput(ctx, "missing")
+			// If not set, use the default.  Some branches like master-art-host don't have frameworks/base, so manually
+			// handle the case that the default is missing.  Those branches won't attempt to build the profile rule,
+			// and if they do they'll get a missing deps error.
+			defaultProfile := "frameworks/base/config/boot-image-profile.txt"
+			path := android.ExistentPathForSource(ctx, defaultProfile)
+			if path.Valid() {
+				bootImageProfile = path.Path()
+			} else {
+				missingDeps = append(missingDeps, defaultProfile)
+				bootImageProfile = android.PathForOutput(ctx, "missing")
+			}
 		}
-	}
 
-	profile := image.dir.Join(ctx, "boot.prof")
+		profile := image.dir.Join(ctx, "boot.prof")
 
-	rule.Command().
-		Text(`ANDROID_LOG_TAGS="*:e"`).
-		Tool(tools.Profman).
-		FlagWithInput("--create-profile-from=", bootImageProfile).
-		FlagForEachInput("--apk=", image.dexPaths.Paths()).
-		FlagForEachArg("--dex-location=", image.dexLocations).
-		FlagWithOutput("--reference-profile-file=", profile)
+		rule.Command().
+			Text(`ANDROID_LOG_TAGS="*:e"`).
+			Tool(tools.Profman).
+			FlagWithInput("--create-profile-from=", bootImageProfile).
+			FlagForEachInput("--apk=", image.dexPaths.Paths()).
+			FlagForEachArg("--dex-location=", image.dexLocations).
+			FlagWithOutput("--reference-profile-file=", profile)
 
-	rule.Install(profile, "/system/etc/boot-image.prof")
+		rule.Install(profile, "/system/etc/boot-image.prof")
 
-	rule.Build(pctx, ctx, "bootJarsProfile", "profile boot jars")
+		rule.Build(pctx, ctx, "bootJarsProfile", "profile boot jars")
 
-	image.profileInstalls = rule.Installs()
+		image.profileInstalls = rule.Installs()
 
-	return profile
+		return profile
+	}).(android.WritablePath)
 }
 
+var bootImageProfileRuleKey = android.NewOnceKey("bootImageProfileRule")
+
 // Export paths for default boot image to Make
 func (d *dexpreoptBootJars) MakeVars(ctx android.MakeVarsContext) {
 	image := d.defaultBootImage
 	if image != nil {
-		for arch, _ := range image.images {
-			ctx.Strict("DEXPREOPT_IMAGE_"+arch.String(), image.images[arch].String())
-
-			ctx.Strict("DEXPREOPT_IMAGE_BUILT_INSTALLED_"+arch.String(), image.installs[arch].String())
-			ctx.Strict("DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_"+arch.String(), image.unstrippedInstalls[arch].String())
-			ctx.Strict("DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_"+arch.String(), image.vdexInstalls[arch].String())
-		}
-
 		ctx.Strict("DEXPREOPT_IMAGE_PROFILE_BUILT_INSTALLED", image.profileInstalls.String())
-
 		ctx.Strict("DEXPREOPT_BOOTCLASSPATH_DEX_FILES", strings.Join(image.dexPaths.Strings(), " "))
 		ctx.Strict("DEXPREOPT_BOOTCLASSPATH_DEX_LOCATIONS", strings.Join(image.dexLocations, " "))
+
+		var imageNames []string
+		for _, current := range append(d.otherImages, image) {
+			imageNames = append(imageNames, current.name)
+			for arch, _ := range current.images {
+				ctx.Strict("DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_"+current.name+"_"+arch.String(), current.vdexInstalls[arch].String())
+				ctx.Strict("DEXPREOPT_IMAGE_"+current.name+"_"+arch.String(), current.images[arch].String())
+				ctx.Strict("DEXPREOPT_IMAGE_BUILT_INSTALLED_"+current.name+"_"+arch.String(), current.installs[arch].String())
+				ctx.Strict("DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_"+current.name+"_"+arch.String(), current.unstrippedInstalls[arch].String())
+			}
+		}
+		ctx.Strict("DEXPREOPT_IMAGE_NAMES", strings.Join(imageNames, " "))
 	}
 }
diff --git a/java/dexpreopt_config.go b/java/dexpreopt_config.go
index 3d4042b0..31a3e26c 100644
--- a/java/dexpreopt_config.go
+++ b/java/dexpreopt_config.go
@@ -131,6 +131,52 @@ func defaultBootImageConfig(ctx android.PathContext) bootImageConfig {
 
 var defaultBootImageConfigKey = android.NewOnceKey("defaultBootImageConfig")
 
+func apexBootImageConfig(ctx android.PathContext) bootImageConfig {
+	return ctx.Config().Once(apexBootImageConfigKey, func() interface{} {
+		global := dexpreoptGlobalConfig(ctx)
+
+		runtimeModules := global.RuntimeApexJars
+
+		var runtimeBootLocations []string
+
+		for _, m := range runtimeModules {
+			runtimeBootLocations = append(runtimeBootLocations,
+				filepath.Join("/apex/com.android.runtime/javalib", m+".jar"))
+		}
+
+		// The path to bootclasspath dex files needs to be known at module GenerateAndroidBuildAction time, before
+		// the bootclasspath modules have been compiled.  Set up known paths for them, the singleton rules will copy
+		// them there.
+		// TODO: use module dependencies instead
+		var runtimeBootDexPaths android.WritablePaths
+		for _, m := range runtimeModules {
+			runtimeBootDexPaths = append(runtimeBootDexPaths,
+				android.PathForOutput(ctx, ctx.Config().DeviceName(), "dex_apexjars_input", m+".jar"))
+		}
+
+		dir := android.PathForOutput(ctx, ctx.Config().DeviceName(), "dex_apexjars")
+		symbolsDir := android.PathForOutput(ctx, ctx.Config().DeviceName(), "dex_apexjars_unstripped")
+		images := make(map[android.ArchType]android.OutputPath)
+
+		for _, target := range ctx.Config().Targets[android.Android] {
+			images[target.Arch.ArchType] = dir.Join(ctx,
+				"system/framework", target.Arch.ArchType.String(), "apex.art")
+		}
+
+		return bootImageConfig{
+			name:         "apex",
+			modules:      runtimeModules,
+			dexLocations: runtimeBootLocations,
+			dexPaths:     runtimeBootDexPaths,
+			dir:          dir,
+			symbolsDir:   symbolsDir,
+			images:       images,
+		}
+	}).(bootImageConfig)
+}
+
+var apexBootImageConfigKey = android.NewOnceKey("apexBootImageConfig")
+
 func defaultBootclasspath(ctx android.PathContext) []string {
 	return ctx.Config().OnceStringSlice(defaultBootclasspathKey, func() []string {
 		global := dexpreoptGlobalConfig(ctx)