Merge "Retry: Make ConfiguredJarList immutable"
diff --git a/android/config.go b/android/config.go
index 1f70fea..dbae7f7 100644
--- a/android/config.go
+++ b/android/config.go
@@ -1361,14 +1361,31 @@
return IndexList(jar, l.jars)
}
+func copyAndAppend(list []string, item string) []string {
+ // Create the result list to be 1 longer than the input.
+ result := make([]string, len(list)+1)
+
+ // Copy the whole input list into the result.
+ count := copy(result, list)
+
+ // Insert the extra item at the end.
+ result[count] = item
+
+ return result
+}
+
// Append an (apex, jar) pair to the list.
-func (l *ConfiguredJarList) Append(apex string, jar string) {
- l.apexes = append(l.apexes, apex)
- l.jars = append(l.jars, jar)
+func (l *ConfiguredJarList) Append(apex string, jar string) ConfiguredJarList {
+ // Create a copy of the backing arrays before appending to avoid sharing backing
+ // arrays that are mutated across instances.
+ apexes := copyAndAppend(l.apexes, apex)
+ jars := copyAndAppend(l.jars, jar)
+
+ return ConfiguredJarList{apexes, jars}
}
// Filter out sublist.
-func (l *ConfiguredJarList) RemoveList(list ConfiguredJarList) {
+func (l *ConfiguredJarList) RemoveList(list ConfiguredJarList) ConfiguredJarList {
apexes := make([]string, 0, l.Len())
jars := make([]string, 0, l.Len())
@@ -1380,13 +1397,7 @@
}
}
- l.apexes = apexes
- l.jars = jars
-}
-
-// A copy of itself.
-func (l *ConfiguredJarList) CopyOf() ConfiguredJarList {
- return ConfiguredJarList{CopyOf(l.apexes), CopyOf(l.jars)}
+ return ConfiguredJarList{apexes, jars}
}
// A copy of the list of strings containing jar components.
@@ -1469,6 +1480,14 @@
return paths
}
+func (l *ConfiguredJarList) String() string {
+ var pairs []string
+ for i := 0; i < l.Len(); i++ {
+ pairs = append(pairs, l.apexes[i]+":"+l.jars[i])
+ }
+ return strings.Join(pairs, ",")
+}
+
func splitListOfPairsIntoPairOfLists(list []string) ([]string, []string, error) {
// Now we need to populate this list by splitting each item in the slice of
// pairs and appending them to the appropriate list of apexes or jars.
diff --git a/android/config_test.go b/android/config_test.go
index 274d59f..68f68a0 100644
--- a/android/config_test.go
+++ b/android/config_test.go
@@ -91,3 +91,49 @@
t.Errorf("Expected false")
}
}
+
+func assertStringEquals(t *testing.T, expected, actual string) {
+ if actual != expected {
+ t.Errorf("expected %q found %q", expected, actual)
+ }
+}
+
+func TestConfiguredJarList(t *testing.T) {
+ list1 := CreateTestConfiguredJarList([]string{"apex1:jarA"})
+
+ t.Run("create", func(t *testing.T) {
+ assertStringEquals(t, "apex1:jarA", list1.String())
+ })
+
+ list2 := list1.Append("apex2", "jarB")
+ t.Run("append", func(t *testing.T) {
+ assertStringEquals(t, "apex1:jarA,apex2:jarB", list2.String())
+ })
+
+ t.Run("append does not modify", func(t *testing.T) {
+ assertStringEquals(t, "apex1:jarA", list1.String())
+ })
+
+ // Make sure that two lists created by appending to the same list do not share storage.
+ list3 := list1.Append("apex3", "jarC")
+ t.Run("append does not share", func(t *testing.T) {
+ assertStringEquals(t, "apex1:jarA,apex2:jarB", list2.String())
+ assertStringEquals(t, "apex1:jarA,apex3:jarC", list3.String())
+ })
+
+ list4 := list3.RemoveList(list1)
+ t.Run("remove", func(t *testing.T) {
+ assertStringEquals(t, "apex3:jarC", list4.String())
+ })
+
+ t.Run("remove does not modify", func(t *testing.T) {
+ assertStringEquals(t, "apex1:jarA,apex3:jarC", list3.String())
+ })
+
+ // Make sure that two lists created by removing from the same list do not share storage.
+ list5 := list3.RemoveList(CreateTestConfiguredJarList([]string{"apex3:jarC"}))
+ t.Run("remove", func(t *testing.T) {
+ assertStringEquals(t, "apex3:jarC", list4.String())
+ assertStringEquals(t, "apex1:jarA", list5.String())
+ })
+}
diff --git a/java/dexpreopt_config.go b/java/dexpreopt_config.go
index 0f8888a..c315124 100644
--- a/java/dexpreopt_config.go
+++ b/java/dexpreopt_config.go
@@ -81,13 +81,12 @@
targets := dexpreoptTargets(ctx)
deviceDir := android.PathForOutput(ctx, ctx.Config().DeviceName())
- artModules := global.ArtApexJars.CopyOf()
+ artModules := global.ArtApexJars
// With EMMA_INSTRUMENT_FRAMEWORK=true the Core libraries depend on jacoco.
if ctx.Config().IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK") {
- artModules.Append("com.android.art", "jacocoagent")
+ artModules = artModules.Append("com.android.art", "jacocoagent")
}
- frameworkModules := global.BootJars.CopyOf()
- frameworkModules.RemoveList(artModules)
+ frameworkModules := global.BootJars.RemoveList(artModules)
artSubdir := "apex/art_boot_images/javalib"
frameworkSubdir := "system/framework"