Use precise class loader context for system server jars.
This patch excludes non-Soong system server jars from dexpreopting.
System server jars should be dexpreopted together for better
performance: each jar should have all preceding system server jars
in its class loader context (that is passed to dex2oat and recorded
in the resulting .oat file to be used by the loader).
This means that we need a total order on system server jars. The
default order provided by PRODUCT_SYSTEM_SERVER_JARS is not good, as
it does not always respect genuine dependencies between jars (counter-
examples are rare, but non-trivial to fix: b/148219586).
This patch adds a post deps mutator pass that creates additional
dependencies and enforces global order. These are later used to
generate precise class loader contexts and system server classpath.
Test: Class loader contexts in the oat files for system server jars
match expectations:
$ oatdump --oat-file=out/target/product/walleye/system/framework/oat/arm64/com.android.location.provider.odex | grep '^classpath'
classpath = PCL[]
$ oatdump --oat-file=out/target/product/walleye/system/framework/oat/arm64/services.odex | grep '^classpath'
classpath = PCL[/system/framework/com.android.location.provider.jar*1919890654]
$ oatdump --oat-file=out/target/product/walleye/system/framework/oat/arm64/wifi-service.odex | grep '^classpath'
classpath = PCL[/system/framework/com.android.location.provider.jar*1919890654:/system/framework/services.jar*4269704903:/system/framework/services.jar!classes2.dex*134345935]
...
Test: The phone boots and logcat has no scary messages related to
class loader contexts:
$ lunch aosp_walleye-userdebug && m
$ adb reboot bootloader && fastboot flashall -w && adb wait-for-device
$ adb root
$ adb shell stop
$ adb logcat -c
$ adb shell setprop dalvik.vm.extra-opts -verbose:oat
$ adb shell start
$ adb logcat | egrep -i 'system_server: .*load.*/system/framework'
02-03 14:14:26.912 5016 5016 I system_server: Loading /system/framework/oat/arm64/com.android.location.provider.odex with executable: 1
02-03 14:14:26.914 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/com.android.location.provider.odex with executable: 1
02-03 14:14:26.914 5016 5016 I system_server: Loading /system/framework/oat/arm64/services.odex with executable: 1
02-03 14:14:26.916 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/services.odex with executable: 1
02-03 14:14:26.927 5016 5016 I system_server: Loading /system/framework/oat/arm64/wifi-service.odex with executable: 1
02-03 14:14:26.933 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/wifi-service.odex with executable: 1
02-03 14:14:26.933 5016 5016 I system_server: Loading /system/framework/oat/arm64/ethernet-service.odex with executable: 1
02-03 14:14:26.934 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/ethernet-service.odex with executable: 1
02-03 14:14:26.946 5016 5016 I system_server: Loading /system/framework/oat/arm64/com.android.location.provider.odex with executable: 0
02-03 14:14:26.947 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/com.android.location.provider.odex with executable: 0
02-03 14:14:26.947 5016 5016 I system_server: Loading /system/framework/oat/arm64/services.odex with executable: 0
02-03 14:14:26.948 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/services.odex with executable: 0
02-03 14:14:26.948 5016 5016 I system_server: Loading /system/framework/oat/arm64/wifi-service.odex with executable: 0
02-03 14:14:26.948 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/wifi-service.odex with executable: 0
02-03 14:14:26.949 5016 5016 I system_server: Loading /system/framework/oat/arm64/ethernet-service.odex with executable: 0
02-03 14:14:26.949 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/ethernet-service.odex with executable: 0
02-03 14:14:30.480 5016 5016 I system_server: Loading /system/framework/oat/arm64/com.android.location.provider.odex with executable: 1
02-03 14:14:30.481 5016 5016 I system_server: Successfully loaded /system/framework/oat/arm64/com.android.location.provider.odex with executable: 1
Bug: 141785760
Bug: 140451054
Bug: 148944771
Change-Id: Idac678dbd1f5fe0e381ce8e0e3561423f8a31389
diff --git a/java/dexpreopt_config.go b/java/dexpreopt_config.go
index 57b6125..7d0bd8f 100644
--- a/java/dexpreopt_config.go
+++ b/java/dexpreopt_config.go
@@ -70,12 +70,11 @@
// systemServerClasspath returns the on-device locations of the modules in the system server classpath. It is computed
// once the first time it is called for any ctx.Config(), and returns the same slice for all future calls with the same
// ctx.Config().
-func systemServerClasspath(ctx android.PathContext) []string {
+func systemServerClasspath(ctx android.MakeVarsContext) []string {
return ctx.Config().OnceStringSlice(systemServerClasspathKey, func() []string {
global := dexpreoptGlobalConfig(ctx)
-
var systemServerClasspathLocations []string
- for _, m := range global.SystemServerJars {
+ for _, m := range *DexpreoptedSystemServerJars(ctx.Config()) {
systemServerClasspathLocations = append(systemServerClasspathLocations,
filepath.Join("/system/framework", m+".jar"))
}
@@ -112,15 +111,6 @@
return moduleName
}
-func getJarsFromApexJarPairs(apexJarPairs []string) []string {
- modules := make([]string, len(apexJarPairs))
- for i, p := range apexJarPairs {
- _, jar := android.SplitApexJarPair(p)
- modules[i] = jar
- }
- return modules
-}
-
var (
bootImageConfigKey = android.NewOnceKey("bootImageConfig")
artBootImageName = "art"
@@ -141,7 +131,7 @@
artModules = append(artModules, "jacocoagent")
}
frameworkModules := android.RemoveListFromList(global.BootJars,
- concat(artModules, getJarsFromApexJarPairs(global.UpdatableBootJars)))
+ concat(artModules, dexpreopt.GetJarsFromApexJarPairs(global.UpdatableBootJars)))
artSubdir := "apex/com.android.art/javalib"
frameworkSubdir := "system/framework"