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/*
* Copyright (C) 2019, 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 <cstdlib>
#include <ctime>
#include <iostream>
#include <numeric>
#include <string>
#include <thread>
#include <unistd.h>
#include <gtest/gtest.h>
#include <hidl/HidlSupport.h>
#include <hidl/HidlTransportSupport.h>
#include <hidl/HidlTransportUtils.h>
#include <hwbinder/IPCThreadState.h>
using ::android::sp;
using ::android::hardware::IPCThreadState;
using ::android::hidl::base::V1_0::IBase;
static std::string gDescriptor;
static std::string gInstance;
sp<IBase> getHal() {
return ::android::hardware::details::getRawServiceInternal(gDescriptor, gInstance,
true /*retry*/, false /*getStub*/);
}
static constexpr size_t NUM_IMMEDIATE_GET_UNGETS = 100;
TEST(LazyHidl, GetUnget) {
for (size_t i = 0; i < NUM_IMMEDIATE_GET_UNGETS; i++) {
IPCThreadState::self()->flushCommands();
sp<IBase> hal = getHal();
ASSERT_NE(nullptr, hal.get());
EXPECT_TRUE(hal->ping().isOk());
}
}
static std::vector<size_t> waitTimes(size_t numTimes, size_t maxWait) {
std::vector<size_t> times(numTimes);
for (size_t i = 0; i < numTimes; i++) {
times[i] = (size_t)(rand() % (maxWait + 1));
}
return times;
}
static void testWithTimes(const std::vector<size_t>& waitTimes) {
std::cout << "Note runtime expected from sleeps: "
<< std::accumulate(waitTimes.begin(), waitTimes.end(), 0) << " second(s)."
<< std::endl;
for (size_t sleepTime : waitTimes) {
IPCThreadState::self()->flushCommands();
std::cout << "Thread waiting " << sleepTime << " while not holding HAL." << std::endl;
sleep(sleepTime);
sp<IBase> hal = getHal();
ASSERT_NE(nullptr, hal.get());
ASSERT_TRUE(hal->ping().isOk());
}
}
static constexpr size_t NUM_TIMES_GET_UNGET = 5;
static constexpr size_t MAX_WAITING_DURATION = 10;
static constexpr size_t NUM_CONCURRENT_THREADS = 5;
TEST(LazyHidl, GetWithWaitConcurrent) {
std::vector<std::vector<size_t>> threadWaitTimes(NUM_CONCURRENT_THREADS);
for (size_t i = 0; i < threadWaitTimes.size(); i++) {
threadWaitTimes[i] = waitTimes(NUM_TIMES_GET_UNGET, MAX_WAITING_DURATION);
}
std::vector<std::thread> threads(NUM_CONCURRENT_THREADS);
for (size_t i = 0; i < threads.size(); i++) {
threads[i] = std::thread(testWithTimes, threadWaitTimes[i]);
}
for (auto& thread : threads) {
thread.join();
}
}
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
srand(time(nullptr));
if (argc != 3) {
std::cerr << "Usage: lazy_test fqname instance" << std::endl;
return 1;
}
gDescriptor = argv[1];
gInstance = argv[2];
return RUN_ALL_TESTS();
}
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