libbinder_ndk: AIBinder_setInheritRt
Pipe through this option to libbinder_ndk. This was originally a HIDL
feature, enabled by default there. It was ported to libbinder, and it is
now exposed here.
Fixes: 209338827
Test: libbinder_ndk_unit_test (this test is also in VTS, so is
binderLibTest which has a function test of this API)
Change-Id: I0dde73654b37a414b9267a857a958d19de79bc9d
diff --git a/libs/binder/ndk/ibinder.cpp b/libs/binder/ndk/ibinder.cpp
index 6949c2c..28e3ff4 100644
--- a/libs/binder/ndk/ibinder.cpp
+++ b/libs/binder/ndk/ibinder.cpp
@@ -799,3 +799,12 @@
void AIBinder_setMinSchedulerPolicy(AIBinder* binder, int policy, int priority) {
binder->asABBinder()->setMinSchedulerPolicy(policy, priority);
}
+
+void AIBinder_setInheritRt(AIBinder* binder, bool inheritRt) {
+ ABBinder* localBinder = binder->asABBinder();
+ if (localBinder == nullptr) {
+ LOG(FATAL) << "AIBinder_setInheritRt must be called on a local binder";
+ }
+
+ localBinder->setInheritRt(inheritRt);
+}
diff --git a/libs/binder/ndk/include_platform/android/binder_ibinder_platform.h b/libs/binder/ndk/include_platform/android/binder_ibinder_platform.h
index b0217c4..0549198 100644
--- a/libs/binder/ndk/include_platform/android/binder_ibinder_platform.h
+++ b/libs/binder/ndk/include_platform/android/binder_ibinder_platform.h
@@ -68,4 +68,15 @@
*/
void AIBinder_setMinSchedulerPolicy(AIBinder* binder, int policy, int priority) __INTRODUCED_IN(33);
+/**
+ * Allow the binder to inherit realtime scheduling policies from its caller.
+ *
+ * This must be called before the object is sent to another process. Not thread
+ * safe.
+ *
+ * \param inheritRt whether to inherit realtime scheduling policies (default is
+ * false).
+ */
+void AIBinder_setInheritRt(AIBinder* binder, bool inheritRt) __INTRODUCED_IN(33);
+
__END_DECLS
diff --git a/libs/binder/ndk/libbinder_ndk.map.txt b/libs/binder/ndk/libbinder_ndk.map.txt
index 197c0a1..3824a1b 100644
--- a/libs/binder/ndk/libbinder_ndk.map.txt
+++ b/libs/binder/ndk/libbinder_ndk.map.txt
@@ -146,6 +146,7 @@
AIBinder_Class_disableInterfaceTokenHeader;
AIBinder_DeathRecipient_setOnUnlinked;
AIBinder_isHandlingTransaction;
+ AIBinder_setInheritRt; # llndk
AIBinder_setMinSchedulerPolicy; # llndk
AParcel_marshal;
AParcel_unmarshal;
diff --git a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
index 499f88e..58fa13a 100644
--- a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
+++ b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
@@ -505,6 +505,31 @@
}
};
+TEST(NdkBinder, SetInheritRt) {
+ // functional test in binderLibTest
+ sp<IFoo> foo = sp<MyTestFoo>::make();
+ AIBinder* binder = foo->getBinder();
+
+ // does not abort
+ AIBinder_setInheritRt(binder, true);
+ AIBinder_setInheritRt(binder, false);
+ AIBinder_setInheritRt(binder, true);
+
+ AIBinder_decStrong(binder);
+}
+
+TEST(NdkBinder, SetInheritRtNonLocal) {
+ AIBinder* binder = AServiceManager_getService(kExistingNonNdkService);
+ ASSERT_NE(binder, nullptr);
+
+ ASSERT_TRUE(AIBinder_isRemote(binder));
+
+ EXPECT_DEATH(AIBinder_setInheritRt(binder, true), "");
+ EXPECT_DEATH(AIBinder_setInheritRt(binder, false), "");
+
+ AIBinder_decStrong(binder);
+}
+
TEST(NdkBinder, AddNullService) {
EXPECT_EQ(EX_ILLEGAL_ARGUMENT, AServiceManager_addService(nullptr, "any-service-name"));
}