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- // Copyright 2019 Google Inc. All rights reserved.
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
- package java
- import (
- "path/filepath"
- "strings"
- "android/soong/android"
- "android/soong/dexpreopt"
- )
- // dexpreoptTargets returns the list of targets that are relevant to dexpreopting, which excludes architectures
- // supported through native bridge.
- func dexpreoptTargets(ctx android.PathContext) []android.Target {
- var targets []android.Target
- for _, target := range ctx.Config().Targets[android.Android] {
- if target.NativeBridge == android.NativeBridgeDisabled {
- targets = append(targets, target)
- }
- }
- // We may also need the images on host in order to run host-based tests.
- for _, target := range ctx.Config().Targets[ctx.Config().BuildOS] {
- targets = append(targets, target)
- }
- return targets
- }
- var (
- bootImageConfigKey = android.NewOnceKey("bootImageConfig")
- bootImageConfigRawKey = android.NewOnceKey("bootImageConfigRaw")
- artBootImageName = "art"
- frameworkBootImageName = "boot"
- mainlineBootImageName = "mainline"
- bootImageStem = "boot"
- )
- func genBootImageConfigRaw(ctx android.PathContext) map[string]*bootImageConfig {
- return ctx.Config().Once(bootImageConfigRawKey, func() interface{} {
- global := dexpreopt.GetGlobalConfig(ctx)
- artModules := global.ArtApexJars
- frameworkModules := global.BootJars // This includes `artModules`.
- mainlineBcpModules := global.ApexBootJars
- frameworkSubdir := "system/framework"
- // ART config for the primary boot image in the ART apex.
- // It includes the Core Libraries.
- artCfg := bootImageConfig{
- name: artBootImageName,
- stem: bootImageStem,
- installDir: "apex/art_boot_images/javalib",
- profileInstallPathInApex: "etc/boot-image.prof",
- modules: artModules,
- preloadedClassesFile: "art/build/boot/preloaded-classes",
- compilerFilter: "speed-profile",
- singleImage: false,
- }
- // Framework config for the boot image extension.
- // It includes framework libraries and depends on the ART config.
- frameworkCfg := bootImageConfig{
- name: frameworkBootImageName,
- stem: bootImageStem,
- installDir: frameworkSubdir,
- modules: frameworkModules,
- preloadedClassesFile: "frameworks/base/config/preloaded-classes",
- compilerFilter: "speed-profile",
- singleImage: false,
- profileImports: []*bootImageConfig{&artCfg},
- }
- mainlineCfg := bootImageConfig{
- extends: &frameworkCfg,
- name: mainlineBootImageName,
- stem: bootImageStem,
- installDir: frameworkSubdir,
- modules: mainlineBcpModules,
- compilerFilter: "verify",
- singleImage: true,
- }
- return map[string]*bootImageConfig{
- artBootImageName: &artCfg,
- frameworkBootImageName: &frameworkCfg,
- mainlineBootImageName: &mainlineCfg,
- }
- }).(map[string]*bootImageConfig)
- }
- // Construct the global boot image configs.
- func genBootImageConfigs(ctx android.PathContext) map[string]*bootImageConfig {
- return ctx.Config().Once(bootImageConfigKey, func() interface{} {
- targets := dexpreoptTargets(ctx)
- archType := ctx.Config().Targets[android.Android][0].Arch.ArchType
- deviceDir := android.PathForOutput(ctx, toDexpreoptDirName(archType))
- configs := genBootImageConfigRaw(ctx)
- for _, c := range configs {
- c.dir = deviceDir.Join(ctx, "dex_"+c.name+"jars")
- c.symbolsDir = deviceDir.Join(ctx, "dex_"+c.name+"jars_unstripped")
- // expands to <stem>.art for primary image and <stem>-<1st module>.art for extension
- imageName := c.firstModuleNameOrStem(ctx) + ".art"
- // 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(b/143682396): use module dependencies instead
- inputDir := deviceDir.Join(ctx, "dex_"+c.name+"jars_input")
- c.dexPaths = c.modules.BuildPaths(ctx, inputDir)
- c.dexPathsByModule = c.modules.BuildPathsByModule(ctx, inputDir)
- c.dexPathsDeps = c.dexPaths
- // Create target-specific variants.
- for _, target := range targets {
- arch := target.Arch.ArchType
- imageDir := c.dir.Join(ctx, target.Os.String(), c.installDir, arch.String())
- variant := &bootImageVariant{
- bootImageConfig: c,
- target: target,
- imagePathOnHost: imageDir.Join(ctx, imageName),
- imagePathOnDevice: filepath.Join("/", c.installDir, arch.String(), imageName),
- imagesDeps: c.moduleFiles(ctx, imageDir, ".art", ".oat", ".vdex"),
- dexLocations: c.modules.DevicePaths(ctx.Config(), target.Os),
- }
- variant.dexLocationsDeps = variant.dexLocations
- c.variants = append(c.variants, variant)
- }
- c.zip = c.dir.Join(ctx, c.name+".zip")
- }
- visited := make(map[string]bool)
- for _, c := range configs {
- calculateDepsRecursive(c, targets, visited)
- }
- return configs
- }).(map[string]*bootImageConfig)
- }
- // calculateDepsRecursive calculates the dependencies of the given boot image config and all its
- // ancestors, if they are not visited.
- // The boot images are supposed to form a tree, where the root is the primary boot image. We do not
- // expect loops (e.g., A extends B, B extends C, C extends A), and we let them crash soong with a
- // stack overflow.
- // Note that a boot image config only has a pointer to the parent, not to children. Therefore, we
- // first go up through the parent chain, and then go back down to visit every code along the path.
- // `visited` is a map where a key is a boot image name and the value indicates whether the boot
- // image config is visited. The boot image names are guaranteed to be unique because they come from
- // `genBootImageConfigRaw` above, which also returns a map and would fail in the first place if the
- // names were not unique.
- func calculateDepsRecursive(c *bootImageConfig, targets []android.Target, visited map[string]bool) {
- if c.extends == nil || visited[c.name] {
- return
- }
- if c.extends.extends != nil {
- calculateDepsRecursive(c.extends, targets, visited)
- }
- visited[c.name] = true
- c.dexPathsDeps = android.Concat(c.extends.dexPathsDeps, c.dexPathsDeps)
- for i := range targets {
- c.variants[i].baseImages = android.Concat(c.extends.variants[i].baseImages, android.OutputPaths{c.extends.variants[i].imagePathOnHost})
- c.variants[i].baseImagesDeps = android.Concat(c.extends.variants[i].baseImagesDeps, c.extends.variants[i].imagesDeps.Paths())
- c.variants[i].dexLocationsDeps = android.Concat(c.extends.variants[i].dexLocationsDeps, c.variants[i].dexLocationsDeps)
- }
- }
- func artBootImageConfig(ctx android.PathContext) *bootImageConfig {
- return genBootImageConfigs(ctx)[artBootImageName]
- }
- func defaultBootImageConfig(ctx android.PathContext) *bootImageConfig {
- return genBootImageConfigs(ctx)[frameworkBootImageName]
- }
- func mainlineBootImageConfig(ctx android.PathContext) *bootImageConfig {
- return genBootImageConfigs(ctx)[mainlineBootImageName]
- }
- // Apex boot config allows to access build/install paths of apex boot jars without going
- // through the usual trouble of registering dependencies on those modules and extracting build paths
- // from those dependencies.
- type apexBootConfig struct {
- // A list of apex boot jars.
- modules android.ConfiguredJarList
- // A list of predefined build paths to apex boot jars. They are configured very early,
- // before the modules for these jars are processed and the actual paths are generated, and
- // later on a singleton adds commands to copy actual jars to the predefined paths.
- dexPaths android.WritablePaths
- // Map from module name (without prebuilt_ prefix) to the predefined build path.
- dexPathsByModule map[string]android.WritablePath
- // A list of dex locations (a.k.a. on-device paths) to the boot jars.
- dexLocations []string
- }
- var updatableBootConfigKey = android.NewOnceKey("apexBootConfig")
- // Returns apex boot config.
- func GetApexBootConfig(ctx android.PathContext) apexBootConfig {
- return ctx.Config().Once(updatableBootConfigKey, func() interface{} {
- apexBootJars := dexpreopt.GetGlobalConfig(ctx).ApexBootJars
- archType := ctx.Config().Targets[android.Android][0].Arch.ArchType
- dir := android.PathForOutput(ctx, toDexpreoptDirName(archType), "apex_bootjars")
- dexPaths := apexBootJars.BuildPaths(ctx, dir)
- dexPathsByModuleName := apexBootJars.BuildPathsByModule(ctx, dir)
- dexLocations := apexBootJars.DevicePaths(ctx.Config(), android.Android)
- return apexBootConfig{apexBootJars, dexPaths, dexPathsByModuleName, dexLocations}
- }).(apexBootConfig)
- }
- // Returns a list of paths and a list of locations for the boot jars used in dexpreopt (to be
- // passed in -Xbootclasspath and -Xbootclasspath-locations arguments for dex2oat).
- func bcpForDexpreopt(ctx android.PathContext, withUpdatable bool) (android.WritablePaths, []string) {
- // Non-updatable boot jars (they are used both in the boot image and in dexpreopt).
- bootImage := defaultBootImageConfig(ctx)
- dexPaths := bootImage.dexPathsDeps
- // The dex locations for all Android variants are identical.
- dexLocations := bootImage.getAnyAndroidVariant().dexLocationsDeps
- if withUpdatable {
- // Apex boot jars (they are used only in dexpreopt, but not in the boot image).
- apexBootConfig := GetApexBootConfig(ctx)
- dexPaths = append(dexPaths, apexBootConfig.dexPaths...)
- dexLocations = append(dexLocations, apexBootConfig.dexLocations...)
- }
- return dexPaths, dexLocations
- }
- var defaultBootclasspathKey = android.NewOnceKey("defaultBootclasspath")
- func init() {
- android.RegisterMakeVarsProvider(pctx, dexpreoptConfigMakevars)
- }
- func dexpreoptConfigMakevars(ctx android.MakeVarsContext) {
- ctx.Strict("DEXPREOPT_BOOT_JARS_MODULES", strings.Join(defaultBootImageConfig(ctx).modules.CopyOfApexJarPairs(), ":"))
- }
- func toDexpreoptDirName(arch android.ArchType) string {
- return "dexpreopt_" + arch.String()
- }
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