Merge "Remove conditional running of checklast during checkapi"
diff --git a/android/env.go b/android/env.go
index 46bd3d6..c7c96d5 100644
--- a/android/env.go
+++ b/android/env.go
@@ -15,9 +15,11 @@
 package android
 
 import (
+	"fmt"
 	"os"
 	"os/exec"
 	"strings"
+	"syscall"
 
 	"android/soong/env"
 )
@@ -30,28 +32,59 @@
 // a manifest regeneration.
 
 var originalEnv map[string]string
-var SoongDelveListen string
-var SoongDelvePath string
+var soongDelveListen string
+var soongDelvePath string
+var soongDelveEnv []string
 
 func init() {
 	// Delve support needs to read this environment variable very early, before NewConfig has created a way to
 	// access originalEnv with dependencies.  Store the value where soong_build can find it, it will manually
 	// ensure the dependencies are created.
-	SoongDelveListen = os.Getenv("SOONG_DELVE")
-	SoongDelvePath, _ = exec.LookPath("dlv")
+	soongDelveListen = os.Getenv("SOONG_DELVE")
+	soongDelvePath, _ = exec.LookPath("dlv")
 
 	originalEnv = make(map[string]string)
+	soongDelveEnv = []string{}
 	for _, env := range os.Environ() {
 		idx := strings.IndexRune(env, '=')
 		if idx != -1 {
 			originalEnv[env[:idx]] = env[idx+1:]
+			if env[:idx] != "SOONG_DELVE" {
+				soongDelveEnv = append(soongDelveEnv, env)
+			}
 		}
 	}
+
 	// Clear the environment to prevent use of os.Getenv(), which would not provide dependencies on environment
 	// variable values.  The environment is available through ctx.Config().Getenv, ctx.Config().IsEnvTrue, etc.
 	os.Clearenv()
 }
 
+func ReexecWithDelveMaybe() {
+	if soongDelveListen == "" {
+		return
+	}
+
+	if soongDelvePath == "" {
+		fmt.Fprintln(os.Stderr, "SOONG_DELVE is set but failed to find dlv")
+		os.Exit(1)
+	}
+	dlvArgv := []string{
+		soongDelvePath,
+		"--listen=:" + soongDelveListen,
+		"--headless=true",
+		"--api-version=2",
+		"exec",
+		os.Args[0],
+		"--",
+	}
+	dlvArgv = append(dlvArgv, os.Args[1:]...)
+	os.Chdir(absSrcDir)
+	syscall.Exec(soongDelvePath, dlvArgv, soongDelveEnv)
+	fmt.Fprintln(os.Stderr, "exec() failed while trying to reexec with Delve")
+	os.Exit(1)
+}
+
 // getenv checks either os.Getenv or originalEnv so that it works before or after the init()
 // function above.  It doesn't add any dependencies on the environment variable, so it should
 // only be used for values that won't change.  For values that might change use ctx.Config().Getenv.
diff --git a/android/module.go b/android/module.go
index 45477ea..6239d27 100644
--- a/android/module.go
+++ b/android/module.go
@@ -2366,6 +2366,7 @@
 	Classes           []string `json:"class,omitempty"`
 	Installed_paths   []string `json:"installed,omitempty"`
 	SrcJars           []string `json:"srcjars,omitempty"`
+	Paths             []string `json:"path,omitempty"`
 }
 
 func CheckBlueprintSyntax(ctx BaseModuleContext, filename string, contents string) []error {
diff --git a/apex/apex_test.go b/apex/apex_test.go
index cbe5953..5d08f37a 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -19,6 +19,7 @@
 	"os"
 	"path"
 	"reflect"
+	"regexp"
 	"sort"
 	"strings"
 	"testing"
@@ -4256,6 +4257,15 @@
 	}
 }
 
+var filesForSdkLibrary = map[string][]byte{
+	"api/current.txt":        nil,
+	"api/removed.txt":        nil,
+	"api/system-current.txt": nil,
+	"api/system-removed.txt": nil,
+	"api/test-current.txt":   nil,
+	"api/test-removed.txt":   nil,
+}
+
 func TestJavaSDKLibrary(t *testing.T) {
 	ctx, _ := testApex(t, `
 		apex {
@@ -4276,14 +4286,7 @@
 			api_packages: ["foo"],
 			apex_available: [ "myapex" ],
 		}
-	`, withFiles(map[string][]byte{
-		"api/current.txt":        nil,
-		"api/removed.txt":        nil,
-		"api/system-current.txt": nil,
-		"api/system-removed.txt": nil,
-		"api/test-current.txt":   nil,
-		"api/test-removed.txt":   nil,
-	}))
+	`, withFiles(filesForSdkLibrary))
 
 	// java_sdk_library installs both impl jar and permission XML
 	ensureExactContents(t, ctx, "myapex", "android_common_myapex_image", []string{
@@ -4295,6 +4298,98 @@
 	ensureContains(t, sdkLibrary.RuleParams.Command, `<library name=\"foo\" file=\"/apex/myapex/javalib/foo.jar\"`)
 }
 
+func TestJavaSDKLibrary_WithinApex(t *testing.T) {
+	ctx, _ := testApex(t, `
+		apex {
+			name: "myapex",
+			key: "myapex.key",
+			java_libs: ["foo", "bar"],
+		}
+
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+
+		java_sdk_library {
+			name: "foo",
+			srcs: ["a.java"],
+			api_packages: ["foo"],
+			apex_available: ["myapex"],
+			sdk_version: "none",
+			system_modules: "none",
+		}
+
+		java_library {
+			name: "bar",
+			srcs: ["a.java"],
+			libs: ["foo"],
+			apex_available: ["myapex"],
+			sdk_version: "none",
+			system_modules: "none",
+		}
+	`, withFiles(filesForSdkLibrary))
+
+	// java_sdk_library installs both impl jar and permission XML
+	ensureExactContents(t, ctx, "myapex", "android_common_myapex_image", []string{
+		"javalib/bar.jar",
+		"javalib/foo.jar",
+		"etc/permissions/foo.xml",
+	})
+
+	// The bar library should depend on the implementation jar.
+	barLibrary := ctx.ModuleForTests("bar", "android_common_myapex").Rule("javac")
+	if expected, actual := `^-classpath /[^:]*/turbine-combined/foo\.jar$`, barLibrary.Args["classpath"]; !regexp.MustCompile(expected).MatchString(actual) {
+		t.Errorf("expected %q, found %#q", expected, actual)
+	}
+}
+
+func TestJavaSDKLibrary_CrossBoundary(t *testing.T) {
+	ctx, _ := testApex(t, `
+		apex {
+			name: "myapex",
+			key: "myapex.key",
+			java_libs: ["foo"],
+		}
+
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+
+		java_sdk_library {
+			name: "foo",
+			srcs: ["a.java"],
+			api_packages: ["foo"],
+			apex_available: ["myapex"],
+			sdk_version: "none",
+			system_modules: "none",
+		}
+
+		java_library {
+			name: "bar",
+			srcs: ["a.java"],
+			libs: ["foo"],
+			sdk_version: "none",
+			system_modules: "none",
+		}
+	`, withFiles(filesForSdkLibrary))
+
+	// java_sdk_library installs both impl jar and permission XML
+	ensureExactContents(t, ctx, "myapex", "android_common_myapex_image", []string{
+		"javalib/foo.jar",
+		"etc/permissions/foo.xml",
+	})
+
+	// The bar library should depend on the stubs jar.
+	barLibrary := ctx.ModuleForTests("bar", "android_common").Rule("javac")
+	if expected, actual := `^-classpath /[^:]*/turbine-combined/foo\.stubs\.jar$`, barLibrary.Args["classpath"]; !regexp.MustCompile(expected).MatchString(actual) {
+		t.Errorf("expected %q, found %#q", expected, actual)
+	}
+}
+
 func TestCompatConfig(t *testing.T) {
 	ctx, _ := testApex(t, `
 		apex {
diff --git a/cmd/soong_build/main.go b/cmd/soong_build/main.go
index bd1a9ed..905f206 100644
--- a/cmd/soong_build/main.go
+++ b/cmd/soong_build/main.go
@@ -18,12 +18,7 @@
 	"flag"
 	"fmt"
 	"os"
-	"os/exec"
 	"path/filepath"
-	"strconv"
-	"strings"
-	"syscall"
-	"time"
 
 	"github.com/google/blueprint/bootstrap"
 
@@ -55,42 +50,7 @@
 }
 
 func main() {
-	if android.SoongDelveListen != "" {
-		if android.SoongDelvePath == "" {
-			fmt.Fprintln(os.Stderr, "SOONG_DELVE is set but failed to find dlv")
-			os.Exit(1)
-		}
-		pid := strconv.Itoa(os.Getpid())
-		cmd := []string{android.SoongDelvePath,
-			"attach", pid,
-			"--headless",
-			"-l", android.SoongDelveListen,
-			"--api-version=2",
-			"--accept-multiclient",
-			"--log",
-		}
-
-		fmt.Println("Starting", strings.Join(cmd, " "))
-		dlv := exec.Command(cmd[0], cmd[1:]...)
-		dlv.Stdout = os.Stdout
-		dlv.Stderr = os.Stderr
-		dlv.Stdin = nil
-
-		// Put dlv into its own process group so we can kill it and the child process it starts.
-		dlv.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
-
-		err := dlv.Start()
-		if err != nil {
-			// Print the error starting dlv and continue.
-			fmt.Println(err)
-		} else {
-			// Kill the process group for dlv when soong_build exits.
-			defer syscall.Kill(-dlv.Process.Pid, syscall.SIGKILL)
-			// Wait to give dlv a chance to connect and pause the process.
-			time.Sleep(time.Second)
-		}
-	}
-
+	android.ReexecWithDelveMaybe()
 	flag.Parse()
 
 	// The top-level Blueprints file is passed as the first argument.
diff --git a/genrule/genrule.go b/genrule/genrule.go
index fe877fe..f6904f1 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -144,6 +144,9 @@
 
 	subName string
 	subDir  string
+
+	// Collect the module directory for IDE info in java/jdeps.go.
+	modulePaths []string
 }
 
 type taskFunc func(ctx android.ModuleContext, rawCommand string, srcFiles android.Paths) []generateTask
@@ -190,6 +193,9 @@
 func (g *Module) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	g.subName = ctx.ModuleSubDir()
 
+	// Collect the module directory for IDE info in java/jdeps.go.
+	g.modulePaths = append(g.modulePaths, ctx.ModuleDir())
+
 	if len(g.properties.Export_include_dirs) > 0 {
 		for _, dir := range g.properties.Export_include_dirs {
 			g.exportedIncludeDirs = append(g.exportedIncludeDirs,
@@ -529,6 +535,7 @@
 			dpInfo.Deps = append(dpInfo.Deps, src)
 		}
 	}
+	dpInfo.Paths = append(dpInfo.Paths, g.modulePaths...)
 }
 
 func (g *Module) AndroidMk() android.AndroidMkData {
diff --git a/java/builder.go b/java/builder.go
index b834029..b6cb2ae 100644
--- a/java/builder.go
+++ b/java/builder.go
@@ -116,10 +116,10 @@
 		},
 		"abis", "allow-prereleased", "screen-densities", "sdk-version", "stem")
 
-	turbine = pctx.AndroidStaticRule("turbine",
+	turbine, turbineRE = remoteexec.StaticRules(pctx, "turbine",
 		blueprint.RuleParams{
 			Command: `rm -rf "$outDir" && mkdir -p "$outDir" && ` +
-				`${config.JavaCmd} ${config.JavaVmFlags} -jar ${config.TurbineJar} --output $out.tmp ` +
+				`$reTemplate${config.JavaCmd} ${config.JavaVmFlags} -jar ${config.TurbineJar} --output $out.tmp ` +
 				`--temp_dir "$outDir" --sources @$out.rsp  --source_jars $srcJars ` +
 				`--javacopts ${config.CommonJdkFlags} ` +
 				`$javacFlags -source $javaVersion -target $javaVersion -- $bootClasspath $classpath && ` +
@@ -134,7 +134,15 @@
 			RspfileContent: "$in",
 			Restat:         true,
 		},
-		"javacFlags", "bootClasspath", "classpath", "srcJars", "outDir", "javaVersion")
+		&remoteexec.REParams{Labels: map[string]string{"type": "tool", "name": "turbine"},
+			ExecStrategy:      "${config.RETurbineExecStrategy}",
+			Inputs:            []string{"${config.TurbineJar}", "${out}.rsp", "$implicits"},
+			RSPFile:           "${out}.rsp",
+			OutputFiles:       []string{"$out.tmp"},
+			OutputDirectories: []string{"$outDir"},
+			ToolchainInputs:   []string{"${config.JavaCmd}"},
+			Platform:          map[string]string{remoteexec.PoolKey: "${config.REJavaPool}"},
+		}, []string{"javacFlags", "bootClasspath", "classpath", "srcJars", "outDir", "javaVersion"}, []string{"implicits"})
 
 	jar = pctx.AndroidStaticRule("jar",
 		blueprint.RuleParams{
@@ -346,20 +354,26 @@
 	deps = append(deps, classpath...)
 	deps = append(deps, flags.processorPath...)
 
+	rule := turbine
+	args := map[string]string{
+		"javacFlags":    flags.javacFlags,
+		"bootClasspath": bootClasspath,
+		"srcJars":       strings.Join(srcJars.Strings(), " "),
+		"classpath":     classpath.FormTurbineClassPath("--classpath "),
+		"outDir":        android.PathForModuleOut(ctx, "turbine", "classes").String(),
+		"javaVersion":   flags.javaVersion.String(),
+	}
+	if ctx.Config().IsEnvTrue("RBE_TURBINE") {
+		rule = turbineRE
+		args["implicits"] = strings.Join(deps.Strings(), ",")
+	}
 	ctx.Build(pctx, android.BuildParams{
-		Rule:        turbine,
+		Rule:        rule,
 		Description: "turbine",
 		Output:      outputFile,
 		Inputs:      srcFiles,
 		Implicits:   deps,
-		Args: map[string]string{
-			"javacFlags":    flags.javacFlags,
-			"bootClasspath": bootClasspath,
-			"srcJars":       strings.Join(srcJars.Strings(), " "),
-			"classpath":     classpath.FormTurbineClassPath("--classpath "),
-			"outDir":        android.PathForModuleOut(ctx, "turbine", "classes").String(),
-			"javaVersion":   flags.javaVersion.String(),
-		},
+		Args:        args,
 	})
 }
 
diff --git a/java/config/config.go b/java/config/config.go
index 1344ceb..fa19afb 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -148,6 +148,7 @@
 	pctx.VariableFunc("REJavacExecStrategy", remoteexec.EnvOverrideFunc("RBE_JAVAC_EXEC_STRATEGY", remoteexec.LocalExecStrategy))
 	pctx.VariableFunc("RED8ExecStrategy", remoteexec.EnvOverrideFunc("RBE_D8_EXEC_STRATEGY", remoteexec.LocalExecStrategy))
 	pctx.VariableFunc("RER8ExecStrategy", remoteexec.EnvOverrideFunc("RBE_R8_EXEC_STRATEGY", remoteexec.LocalExecStrategy))
+	pctx.VariableFunc("RETurbineExecStrategy", remoteexec.EnvOverrideFunc("RBE_TURBINE_EXEC_STRATEGY", remoteexec.LocalExecStrategy))
 
 	pctx.HostJavaToolVariable("JacocoCLIJar", "jacoco-cli.jar")
 
diff --git a/java/droiddoc.go b/java/droiddoc.go
index a5a6785..821bb6d 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -546,7 +546,7 @@
 		case libTag:
 			switch dep := module.(type) {
 			case SdkLibraryDependency:
-				deps.classpath = append(deps.classpath, dep.SdkImplementationJars(ctx, j.sdkVersion())...)
+				deps.classpath = append(deps.classpath, dep.SdkHeaderJars(ctx, j.sdkVersion())...)
 			case Dependency:
 				deps.classpath = append(deps.classpath, dep.HeaderJars()...)
 				deps.aidlIncludeDirs = append(deps.aidlIncludeDirs, dep.AidlIncludeDirs()...)
diff --git a/java/java.go b/java/java.go
index b97defa..dedbf47 100644
--- a/java/java.go
+++ b/java/java.go
@@ -471,6 +471,9 @@
 	kytheFiles android.Paths
 
 	distFile android.Path
+
+	// Collect the module directory for IDE info in java/jdeps.go.
+	modulePaths []string
 }
 
 func (j *Module) OutputFiles(tag string) (android.Paths, error) {
@@ -1776,6 +1779,7 @@
 	if j.expandJarjarRules != nil {
 		dpInfo.Jarjar_rules = append(dpInfo.Jarjar_rules, j.expandJarjarRules.String())
 	}
+	dpInfo.Paths = append(dpInfo.Paths, j.modulePaths...)
 }
 
 func (j *Module) CompilerDeps() []string {
@@ -1856,6 +1860,9 @@
 	j.deviceProperties.UncompressDex = j.dexpreopter.uncompressedDex
 	j.compile(ctx, nil)
 
+	// Collect the module directory for IDE info in java/jdeps.go.
+	j.modulePaths = append(j.modulePaths, ctx.ModuleDir())
+
 	exclusivelyForApex := android.InAnyApex(ctx.ModuleName()) && !j.IsForPlatform()
 	if (Bool(j.properties.Installable) || ctx.Host()) && !exclusivelyForApex {
 		var extraInstallDeps android.Paths
diff --git a/java/java_test.go b/java/java_test.go
index ab6d88e..e03e57b 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -19,6 +19,7 @@
 	"os"
 	"path/filepath"
 	"reflect"
+	"regexp"
 	"sort"
 	"strconv"
 	"strings"
@@ -1261,6 +1262,31 @@
 	}
 }
 
+func TestJavaSdkLibrary_DoNotAccessImplWhenItIsNotBuilt(t *testing.T) {
+	ctx, _ := testJava(t, `
+		java_sdk_library {
+			name: "foo",
+			srcs: ["a.java"],
+			api_only: true,
+			public: {
+				enabled: true,
+			},
+		}
+
+		java_library {
+			name: "bar",
+			srcs: ["b.java"],
+			libs: ["foo"],
+		}
+		`)
+
+	// The bar library should depend on the stubs jar.
+	barLibrary := ctx.ModuleForTests("bar", "android_common").Rule("javac")
+	if expected, actual := `^-classpath .*:/[^:]*/turbine-combined/foo\.stubs\.jar$`, barLibrary.Args["classpath"]; !regexp.MustCompile(expected).MatchString(actual) {
+		t.Errorf("expected %q, found %#q", expected, actual)
+	}
+}
+
 func TestJavaSdkLibrary_UseSourcesFromAnotherSdkLibrary(t *testing.T) {
 	testJava(t, `
 		java_sdk_library {
diff --git a/java/jdeps.go b/java/jdeps.go
index 49e3de3..9f43887 100644
--- a/java/jdeps.go
+++ b/java/jdeps.go
@@ -72,6 +72,7 @@
 		dpInfo.Jarjar_rules = android.FirstUniqueStrings(dpInfo.Jarjar_rules)
 		dpInfo.Jars = android.FirstUniqueStrings(dpInfo.Jars)
 		dpInfo.SrcJars = android.FirstUniqueStrings(dpInfo.SrcJars)
+		dpInfo.Paths = android.FirstUniqueStrings(dpInfo.Paths)
 		moduleInfos[name] = dpInfo
 
 		mkProvider, ok := module.(android.AndroidMkDataProvider)
diff --git a/java/sdk_library.go b/java/sdk_library.go
index 8231278..b487efd 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -1293,17 +1293,39 @@
 	return android.Paths{jarPath.Path()}
 }
 
+// Get the apex name for module, "" if it is for platform.
+func getApexNameForModule(module android.Module) string {
+	if apex, ok := module.(android.ApexModule); ok {
+		return apex.ApexName()
+	}
+
+	return ""
+}
+
+// Check to see if the other module is within the same named APEX as this module.
+//
+// If either this or the other module are on the platform then this will return
+// false.
+func (module *SdkLibrary) withinSameApexAs(other android.Module) bool {
+	name := module.ApexName()
+	return name != "" && getApexNameForModule(other) == name
+}
+
 func (module *SdkLibrary) sdkJars(ctx android.BaseModuleContext, sdkVersion sdkSpec, headerJars bool) android.Paths {
 
-	// Check any special cases for java_sdk_library.
-	//
-	// Only allow access to the implementation library in the following condition:
-	// * No sdk_version specified on the referencing module.
-	if sdkVersion.kind == sdkPrivate {
-		if headerJars {
-			return module.HeaderJars()
-		} else {
-			return module.ImplementationJars()
+	// Only provide access to the implementation library if it is actually built.
+	if module.requiresRuntimeImplementationLibrary() {
+		// Check any special cases for java_sdk_library.
+		//
+		// Only allow access to the implementation library in the following condition:
+		// * No sdk_version specified on the referencing module.
+		// * The referencing module is in the same apex as this.
+		if sdkVersion.kind == sdkPrivate || module.withinSameApexAs(ctx.Module()) {
+			if headerJars {
+				return module.HeaderJars()
+			} else {
+				return module.ImplementationJars()
+			}
 		}
 	}
 
diff --git a/remoteexec/remoteexec.go b/remoteexec/remoteexec.go
index 99e29dc..2b513b2 100644
--- a/remoteexec/remoteexec.go
+++ b/remoteexec/remoteexec.go
@@ -75,6 +75,9 @@
 	// OutputFiles is a list of output file paths or ninja variables as placeholders for rule
 	// outputs.
 	OutputFiles []string
+	// OutputDirectories is a list of output directory paths or ninja variables as placeholders
+	// for rule outputs.
+	OutputDirectories []string
 	// ToolchainInputs is a list of paths or ninja variables pointing to the location of
 	// toolchain binaries used by the rule.
 	ToolchainInputs []string
@@ -151,6 +154,10 @@
 		args += " --output_files=" + strings.Join(r.OutputFiles, ",")
 	}
 
+	if len(r.OutputDirectories) > 0 {
+		args += " --output_directories=" + strings.Join(r.OutputDirectories, ",")
+	}
+
 	if len(r.ToolchainInputs) > 0 {
 		args += " --toolchain_inputs=" + strings.Join(r.ToolchainInputs, ",")
 	}
@@ -159,7 +166,9 @@
 }
 
 // StaticRules returns a pair of rules based on the given RuleParams, where the first rule is a
-// locally executable rule and the second rule is a remotely executable rule.
+// locally executable rule and the second rule is a remotely executable rule. commonArgs are args
+// used for both the local and remotely executable rules. reArgs are used only for remote
+// execution.
 func StaticRules(ctx android.PackageContext, name string, ruleParams blueprint.RuleParams, reParams *REParams, commonArgs []string, reArgs []string) (blueprint.Rule, blueprint.Rule) {
 	ruleParamsRE := ruleParams
 	ruleParams.Command = strings.ReplaceAll(ruleParams.Command, "$reTemplate", "")