Merge "libbinder_ndk: test Bp destruction" am: 77d8f5b5d3 am: 0cd2c66e88 (9d5a4515) · Commits · e / os / platform_frameworks_native

libs/binder/ndk/test/Android.bp

+11 −0

Original line number	Diff line number	Diff line
		@@ -59,6 +59,9 @@ cc_test {
		name: "libbinder_ndk_unit_test",
		defaults: ["test_libbinder_ndk_test_defaults"],
		srcs: ["libbinder_ndk_unit_test.cpp"],
		static_libs: [
		"IBinderNdkUnitTest-ndk_platform",
		],
		test_suites: ["general-tests"],
		require_root: true,

		@@ -93,3 +96,11 @@ aidl_interface {
		"IBinderVendorDoubleLoadTest.aidl",
		],
		}

		aidl_interface {
		name: "IBinderNdkUnitTest",
		srcs: [
		"IBinderNdkUnitTest.aidl",
		"IEmpty.aidl",
		],
		}

libs/binder/ndk/test/IBinderNdkUnitTest.aidl

0 → 100644

+27 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 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.
		*/

		// This AIDL is to test things that can't be tested in CtsNdkBinderTestCases
		// because it requires libbinder_ndk implementation details or APIs not
		// available to apps. Please prefer adding tests to CtsNdkBinderTestCases
		// over here.

		import IEmpty;

		interface IBinderNdkUnitTest {
		void takeInterface(IEmpty test);
		void forceFlushCommands();
		}

libs/binder/ndk/test/IEmpty.aidl

0 → 100644

+17 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 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.
		*/

		interface IEmpty { }

libs/binder/ndk/test/libbinder_ndk_unit_test.cpp

+78 −3

Original line number	Diff line number	Diff line
		@@ -14,6 +14,8 @@
		* limitations under the License.
		*/

		#include <aidl/BnBinderNdkUnitTest.h>
		#include <aidl/BnEmpty.h>
		#include <android-base/logging.h>
		#include <android/binder_ibinder_jni.h>
		#include <android/binder_manager.h>
		@@ -21,6 +23,10 @@
		#include <gtest/gtest.h>
		#include <iface/iface.h>

		// warning: this is assuming that libbinder_ndk is using the same copy
		// of libbinder that we are.
		#include <binder/IPCThreadState.h>

		#include <sys/prctl.h>
		#include <chrono>
		#include <condition_variable>
		@@ -29,7 +35,38 @@
		using ::android::sp;

		constexpr char kExistingNonNdkService[] = "SurfaceFlinger";
		constexpr char kBinderNdkUnitTestService[] = "BinderNdkUnitTest";

		class MyBinderNdkUnitTest : public aidl::BnBinderNdkUnitTest {
		ndk::ScopedAStatus takeInterface(const std::shared_ptr<aidl::IEmpty>& empty) {
		(void)empty;
		return ndk::ScopedAStatus::ok();
		}
		ndk::ScopedAStatus forceFlushCommands() {
		// warning: this is assuming that libbinder_ndk is using the same copy
		// of libbinder that we are.
		android::IPCThreadState::self()->flushCommands();
		return ndk::ScopedAStatus::ok();
		}
		};

		int generatedService() {
		ABinderProcess_setThreadPoolMaxThreadCount(0);

		auto service = ndk::SharedRefBase::make<MyBinderNdkUnitTest>();
		binder_status_t status =
		AServiceManager_addService(service->asBinder().get(), kBinderNdkUnitTestService);

		if (status != STATUS_OK) {
		LOG(FATAL) << "Could not register: " << status << " " << kBinderNdkUnitTestService;
		}

		ABinderProcess_joinThreadPool();

		return 1; // should not return
		}

		// manually-written parceling class considered bad practice
		class MyFoo : public IFoo {
		binder_status_t doubleNumber(int32_t in, int32_t* out) override {
		out = 2 in;
		@@ -43,7 +80,7 @@ class MyFoo : public IFoo {
		}
		};

		int service(const char* instance) {
		int manualService(const char* instance) {
		ABinderProcess_setThreadPoolMaxThreadCount(0);

		// Strong reference to MyFoo kept by service manager.
		@@ -225,16 +262,54 @@ TEST(NdkBinder, AddServiceMultipleTimes) {
		EXPECT_EQ(IFoo::getService(kInstanceName1), IFoo::getService(kInstanceName2));
		}

		TEST(NdkBinder, SentAidlBinderCanBeDestroyed) {
		static volatile bool destroyed = false;
		static std::mutex dMutex;
		static std::condition_variable cv;

		class MyEmpty : public aidl::BnEmpty {
		virtual ~MyEmpty() {
		destroyed = true;
		cv.notify_one();
		}
		};

		std::shared_ptr<MyEmpty> empty = ndk::SharedRefBase::make<MyEmpty>();

		ndk::SpAIBinder binder(AServiceManager_getService(kBinderNdkUnitTestService));
		std::shared_ptr<aidl::IBinderNdkUnitTest> service =
		aidl::IBinderNdkUnitTest::fromBinder(binder);

		EXPECT_FALSE(destroyed);

		service->takeInterface(empty);
		service->forceFlushCommands();
		empty = nullptr;

		// give other binder thread time to process commands
		{
		using namespace std::chrono_literals;
		std::unique_lock<std::mutex> lk(dMutex);
		cv.wait_for(lk, 1s, [] { return destroyed; });
		}

		EXPECT_TRUE(destroyed);
		}

		int main(int argc, char* argv[]) {
		::testing::InitGoogleTest(&argc, argv);

		if (fork() == 0) {
		prctl(PR_SET_PDEATHSIG, SIGHUP);
		return service(IFoo::kInstanceNameToDieFor);
		return manualService(IFoo::kInstanceNameToDieFor);
		}
		if (fork() == 0) {
		prctl(PR_SET_PDEATHSIG, SIGHUP);
		return manualService(IFoo::kSomeInstanceName);
		}
		if (fork() == 0) {
		prctl(PR_SET_PDEATHSIG, SIGHUP);
		return service(IFoo::kSomeInstanceName);
		return generatedService();
		}

		ABinderProcess_setThreadPoolMaxThreadCount(1); // to recieve death notifications/callbacks