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/*
* 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.
*/
#include <binder/Binder.h>
#include <binder/IServiceManager.h>
#include <binder/ProcessState.h>
#include <binder/IPCThreadState.h>
#include <binderdebug/BinderDebug.h>
#include <gtest/gtest.h>
#include <semaphore.h>
#include <thread>
#include <android/binderdebug/test/BnControl.h>
#include <android/binderdebug/test/IControl.h>
namespace android {
namespace binderdebug {
namespace test {
class Control : public BnControl {
public:
Control() {sem_init(&s, 1, 0);};
::android::binder::Status Continue() override;
sem_t s;
};
::android::binder::Status Control::Continue() {
IPCThreadState::self()->flushCommands();
sem_post(&s);
return binder::Status::ok();
}
TEST(BinderDebugTests, BinderPid) {
BinderPidInfo pidInfo;
const auto& status = getBinderPidInfo(BinderDebugContext::BINDER, getpid(), &pidInfo);
ASSERT_EQ(status, OK);
// There should be one referenced PID for servicemanager
EXPECT_TRUE(!pidInfo.refPids.empty());
}
TEST(BinderDebugTests, BinderThreads) {
BinderPidInfo pidInfo;
const auto& status = getBinderPidInfo(BinderDebugContext::BINDER, getpid(), &pidInfo);
ASSERT_EQ(status, OK);
EXPECT_TRUE(pidInfo.threadUsage <= pidInfo.threadCount);
// The second looper thread can sometimes take longer to spawn.
EXPECT_GE(pidInfo.threadCount, 1);
}
extern "C" {
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
// Create a child/client process to call into the main process so we can ensure
// looper thread has been registered before attempting to get the BinderPidInfo
pid_t pid = fork();
if (pid == 0) {
sp<IBinder> binder = android::defaultServiceManager()->getService(String16("binderdebug"));
sp<IControl> service;
if (binder != nullptr) {
service = android::interface_cast<IControl>(binder);
}
service->Continue();
exit(0);
}
sp<Control> iface = new Control;
android::defaultServiceManager()->addService(String16("binderdebug"), iface);
android::ProcessState::self()->setThreadPoolMaxThreadCount(8);
ProcessState::self()->startThreadPool();
sem_wait(&iface->s);
return RUN_ALL_TESTS();
}
} // extern "C"
} // namespace test
} // namespace binderdebug
} // namespace android
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