Add android.hidl.token@1.0.

This facilitates converting hidl interfaces into something that
are more easily transferrable to other processes.

Bug: 33058559
Test: compiles
Change-Id: I77d1ecc74981f101e07a827ba8d7de77bf56cfa6
diff --git a/transport/Android.bp b/transport/Android.bp
index 5614ffb..9b0fe2c 100644
--- a/transport/Android.bp
+++ b/transport/Android.bp
@@ -13,10 +13,11 @@
 // limitations under the License.
 
 subdirs = [
+    "base/1.0",
     "manager/1.0",
     "memory/1.0",
     "memory/1.0/default",
-    "base/1.0"
+    "token/1.0",
 ]
 
 cc_library_shared {
diff --git a/transport/token/1.0/Android.bp b/transport/token/1.0/Android.bp
new file mode 100644
index 0000000..0ebe1e4
--- /dev/null
+++ b/transport/token/1.0/Android.bp
@@ -0,0 +1,52 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+genrule {
+    name: "android.hidl.token@1.0_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hidl:system/libhidl/transport -randroid.hidl:system/libhidl/transport android.hidl.token@1.0",
+    srcs: [
+        "ITokenManager.hal",
+    ],
+    out: [
+        "android/hidl/token/1.0/TokenManagerAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hidl.token@1.0_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hidl:system/libhidl/transport -randroid.hidl:system/libhidl/transport android.hidl.token@1.0",
+    srcs: [
+        "ITokenManager.hal",
+    ],
+    out: [
+        "android/hidl/token/1.0/ITokenManager.h",
+        "android/hidl/token/1.0/IHwTokenManager.h",
+        "android/hidl/token/1.0/BnTokenManager.h",
+        "android/hidl/token/1.0/BpTokenManager.h",
+        "android/hidl/token/1.0/BsTokenManager.h",
+    ],
+}
+
+cc_library_shared {
+    name: "android.hidl.token@1.0",
+    generated_sources: ["android.hidl.token@1.0_genc++"],
+    generated_headers: ["android.hidl.token@1.0_genc++_headers"],
+    export_generated_headers: ["android.hidl.token@1.0_genc++_headers"],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "android.hidl.base@1.0",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "android.hidl.base@1.0",
+    ],
+}
diff --git a/transport/token/1.0/Android.mk b/transport/token/1.0/Android.mk
new file mode 100644
index 0000000..3d07671
--- /dev/null
+++ b/transport/token/1.0/Android.mk
@@ -0,0 +1,76 @@
+# This file is autogenerated by hidl-gen. Do not edit manually.
+
+LOCAL_PATH := $(call my-dir)
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hidl.token@1.0-java
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_JAVA_LIBRARIES := \
+    android.hidl.base@1.0-java \
+
+
+#
+# Build ITokenManager.hal
+#
+GEN := $(intermediates)/android/hidl/token/V1_0/ITokenManager.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/ITokenManager.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hidl:system/libhidl/transport \
+        -randroid.hidl:system/libhidl/transport \
+        android.hidl.token@1.0::ITokenManager
+
+$(GEN): $(LOCAL_PATH)/ITokenManager.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_JAVA_LIBRARY)
+
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hidl.token@1.0-java-static
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    android.hidl.base@1.0-java-static \
+
+
+#
+# Build ITokenManager.hal
+#
+GEN := $(intermediates)/android/hidl/token/V1_0/ITokenManager.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/ITokenManager.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hidl:system/libhidl/transport \
+        -randroid.hidl:system/libhidl/transport \
+        android.hidl.token@1.0::ITokenManager
+
+$(GEN): $(LOCAL_PATH)/ITokenManager.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/transport/token/1.0/ITokenManager.hal b/transport/token/1.0/ITokenManager.hal
new file mode 100644
index 0000000..dc4134a
--- /dev/null
+++ b/transport/token/1.0/ITokenManager.hal
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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 android.hidl.token@1.0;
+
+/**
+ * This facilitates converting hidl interfaces into something that
+ * are more easily transferrable to other processes.
+ */
+interface ITokenManager {
+
+    /**
+     * Register an interface. The server must only keep a weak reference
+     * to the token. The lifetime of the token is thus linked to the
+     * lifetime of the stored interface.
+     *
+     * @param store Interface which can later be fetched with the returned token.
+     * @return token Opaque value which may be used as inputs to other functions.
+     */
+    createToken(interface store) generates (uint64_t token);
+
+    /**
+     * Explicitly unregister an interface. If the server still holds a weak reference
+     * to an interface, but that interface interface is deleted and the reference
+     * cannot be promoted, then success must be false.
+     *
+     * @param token Token recieved from createToken
+     * @return success Whether or not an interface was successfully unregistered.
+     */
+    unregister(uint64_t token) generates (bool success);
+
+    /**
+     * Fetches an interface from a provided token.
+     *
+     * @param token Token recieved from createToken
+     * @return store Interface registered with createToken and the corresponding
+     *               token or nullptr.
+     */
+    get(uint64_t token) generates (interface store);
+};
diff --git a/update-makefiles.sh b/update-makefiles.sh
index 6a77a7d..3cd1cd2 100755
--- a/update-makefiles.sh
+++ b/update-makefiles.sh
@@ -6,14 +6,15 @@
   exit 1;
 fi
 
-#base
-hidl-gen -Lmakefile -r android.hidl:system/libhidl/transport android.hidl.base@1.0
-hidl-gen -Landroidbp -r android.hidl:system/libhidl/transport android.hidl.base@1.0
+packages=(
+    android.hidl.base@1.0
+    android.hidl.manager@1.0
+    android.hidl.memory@1.0
+    android.hidl.token@1.0
+)
 
-#manager
-hidl-gen -Lmakefile -r android.hidl:system/libhidl/transport android.hidl.manager@1.0
-hidl-gen -Landroidbp -r android.hidl:system/libhidl/transport android.hidl.manager@1.0
-
-#memory
-hidl-gen -Lmakefile -r android.hidl:system/libhidl/transport android.hidl.memory@1.0
-hidl-gen -Landroidbp -r android.hidl:system/libhidl/transport android.hidl.memory@1.0
+for package in "${packages[@]}"; do
+    echo "Updating $package."
+    hidl-gen -Lmakefile -r android.hidl:system/libhidl/transport $package
+    hidl-gen -Landroidbp -r android.hidl:system/libhidl/transport $package
+done