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:
35 using android::OK;
36 using android::sp;
37 using android::status_t;
38
39 // libhidl:
40 using android::hardware::defaultServiceManager;
41 using android::hardware::Return;
42 using android::hardware::Void;
43 using android::hardware::hidl_vec;
44
45 // Standard library
46 using std::cerr;
47 using std::cout;
48 using std::endl;
49 using std::string;
50 using std::unique_ptr;
51 using std::vector;
52
53 // Generated HIDL files
54 using android::hardware::tests::libhwbinder::V1_0::IBenchmark;
55
56 const char gServiceName[] = "android.hardware.tests.libhwbinder.IBenchmark";
57
startServer()58 static 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
BM_sendVec(benchmark::State & state,sp<IBenchmark> service)70 static 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
BM_sendVec_passthrough(benchmark::State & state)84 static 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
BM_sendVec_binderize(benchmark::State & state)96 static 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
main(int argc,char * argv[])108 int main(int argc, char* argv []) {
109 android::hardware::details::setTrebleTestingOverride(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 startServer();
140 while (true) {
141 int stat, retval;
142 retval = wait(&stat);
143 if (retval == -1 && errno == ECHILD) {
144 break;
145 }
146 }
147 };
148 }
149