1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "libhwbinder_benchmark"
18
19#include <sys/types.h>
20#include <sys/wait.h>
21#include <unistd.h>
22
23#include <iostream>
24
25#include <log/log.h>
26#include <utils/StrongPointer.h>
27
28#include <benchmark/benchmark.h>
29#include <hidl/Status.h>
30#include <hidl/ServiceManagement.h>
31
32#include <android/hardware/tests/libhwbinder/1.0/IBenchmark.h>
33
34// libutils:
35using android::OK;
36using android::sp;
37using android::status_t;
38
39// libhidl:
40using android::hardware::defaultServiceManager;
41using android::hardware::Return;
42using android::hardware::Void;
43using android::hardware::hidl_vec;
44
45// Standard library
46using std::cerr;
47using std::cout;
48using std::endl;
49using std::string;
50using std::unique_ptr;
51using std::vector;
52
53// Generated HIDL files
54using android::hardware::tests::libhwbinder::V1_0::IBenchmark;
55
56const char gServiceName[] = "android.hardware.tests.libhwbinder.IBenchmark";
57
58static bool startServer() {
59    sp<IBenchmark> service = IBenchmark::getService(gServiceName, true);
60    status_t status = service->registerAsService(gServiceName);
61
62    if (status != ::android::OK) {
63        ALOGE("Failed to register service %s.", gServiceName);
64        exit(EXIT_FAILURE);
65    }
66
67    return 0;
68}
69
70static void BM_sendVec(benchmark::State& state, sp<IBenchmark> service) {
71    // Prepare data to IPC
72    hidl_vec<uint8_t> data_vec;
73    data_vec.resize(state.range(0));
74    for (int i = 0; i < state.range(0); i++) {
75       data_vec[i] = i % 256;
76    }
77    // Start running
78    while (state.KeepRunning()) {
79       service->sendVec(data_vec, [&] (const auto &/*res*/) {
80               });
81    }
82}
83
84static void BM_sendVec_passthrough(benchmark::State& state) {
85    // getService automatically retries
86    sp<IBenchmark> service = IBenchmark::getService(gServiceName, true /* getStub */);
87    if (service == nullptr) {
88        state.SkipWithError("Failed to retrieve benchmark service.");
89    }
90    if (service->isRemote()) {
91        state.SkipWithError("Benchmark service is remote.");
92    }
93    BM_sendVec(state, service);
94}
95
96static void BM_sendVec_binderize(benchmark::State& state) {
97    // getService automatically retries
98    sp<IBenchmark> service = IBenchmark::getService(gServiceName);
99    if (service == nullptr) {
100        state.SkipWithError("Failed to retrieve benchmark service.");
101    }
102    if (!service->isRemote()) {
103        state.SkipWithError("Unable to fetch remote benchmark service.");
104    }
105    BM_sendVec(state, service);
106}
107
108int main(int argc, char* argv []) {
109    setenv("TREBLE_TESTING_OVERRIDE", "true", true);
110
111    enum HwBinderMode {
112        kBinderize = 0,
113        kPassthrough = 1,
114    };
115    HwBinderMode mode = HwBinderMode::kBinderize;
116
117    // Parse arguments.
118    for (int i = 1; i < argc; i++) {
119        if (string(argv[i]) == "-m") {
120            if (!strcmp(argv[i + 1], "PASSTHROUGH")) {
121                mode = HwBinderMode::kPassthrough;
122            }
123            break;
124        }
125    }
126    if (mode == HwBinderMode::kBinderize) {
127        BENCHMARK(BM_sendVec_binderize)->RangeMultiplier(2)->Range(4, 65536);
128    } else {
129        BENCHMARK(BM_sendVec_passthrough)->RangeMultiplier(2)->Range(4, 65536);
130    }
131
132    ::benchmark::Initialize(&argc, argv);
133
134    pid_t pid = fork();
135    if (pid == 0) {
136        // Child, start benchmarks
137        ::benchmark::RunSpecifiedBenchmarks();
138    } else {
139        int stat;
140        startServer();
141        while (true) {
142            int stat, retval;
143            retval = wait(&stat);
144            if (retval == -1 && errno == ECHILD) {
145                break;
146            }
147        }
148    };
149}
150