1*a65addddSAndroid Build Coastguard Worker /*
2*a65addddSAndroid Build Coastguard Worker * Copyright 2014 Google Inc. All rights reserved.
3*a65addddSAndroid Build Coastguard Worker *
4*a65addddSAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License");
5*a65addddSAndroid Build Coastguard Worker * you may not use this file except in compliance with the License.
6*a65addddSAndroid Build Coastguard Worker * You may obtain a copy of the License at
7*a65addddSAndroid Build Coastguard Worker *
8*a65addddSAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0
9*a65addddSAndroid Build Coastguard Worker *
10*a65addddSAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software
11*a65addddSAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS,
12*a65addddSAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*a65addddSAndroid Build Coastguard Worker * See the License for the specific language governing permissions and
14*a65addddSAndroid Build Coastguard Worker * limitations under the License.
15*a65addddSAndroid Build Coastguard Worker */
16*a65addddSAndroid Build Coastguard Worker
17*a65addddSAndroid Build Coastguard Worker #include <chrono>
18*a65addddSAndroid Build Coastguard Worker #include <ctime>
19*a65addddSAndroid Build Coastguard Worker #include <iomanip>
20*a65addddSAndroid Build Coastguard Worker #include <iostream>
21*a65addddSAndroid Build Coastguard Worker #include <vector>
22*a65addddSAndroid Build Coastguard Worker
23*a65addddSAndroid Build Coastguard Worker #if MULTIPLIER == 1
24*a65addddSAndroid Build Coastguard Worker #define REPEAT(X) REPEAT_1(X, _)
25*a65addddSAndroid Build Coastguard Worker
26*a65addddSAndroid Build Coastguard Worker #elif MULTIPLIER == 10
27*a65addddSAndroid Build Coastguard Worker #define REPEAT(X) REPEAT_10(X, _)
28*a65addddSAndroid Build Coastguard Worker
29*a65addddSAndroid Build Coastguard Worker #elif MULTIPLIER == 100
30*a65addddSAndroid Build Coastguard Worker #define REPEAT(X) REPEAT_100(X, _)
31*a65addddSAndroid Build Coastguard Worker
32*a65addddSAndroid Build Coastguard Worker #elif MULTIPLIER == 250
33*a65addddSAndroid Build Coastguard Worker #define REPEAT(X) REPEAT_250(X, _)
34*a65addddSAndroid Build Coastguard Worker
35*a65addddSAndroid Build Coastguard Worker #elif MULTIPLIER == 1000
36*a65addddSAndroid Build Coastguard Worker #define REPEAT(X) REPEAT_1000(X, _)
37*a65addddSAndroid Build Coastguard Worker
38*a65addddSAndroid Build Coastguard Worker #else
39*a65addddSAndroid Build Coastguard Worker #error Multiplier not supported.
40*a65addddSAndroid Build Coastguard Worker #endif
41*a65addddSAndroid Build Coastguard Worker
42*a65addddSAndroid Build Coastguard Worker #define PLACEHOLDER
43*a65addddSAndroid Build Coastguard Worker
44*a65addddSAndroid Build Coastguard Worker #define EVAL0(...) __VA_ARGS__
45*a65addddSAndroid Build Coastguard Worker #define EVAL1(...) EVAL0(EVAL0(EVAL0(EVAL0(__VA_ARGS__))))
46*a65addddSAndroid Build Coastguard Worker #define EVAL2(...) EVAL1(EVAL1(EVAL1(EVAL1(__VA_ARGS__))))
47*a65addddSAndroid Build Coastguard Worker #define EVAL(...) EVAL2(EVAL2(EVAL2(EVAL2(__VA_ARGS__))))
48*a65addddSAndroid Build Coastguard Worker
49*a65addddSAndroid Build Coastguard Worker #define META_REPEAT_10(R, X, I) \
50*a65addddSAndroid Build Coastguard Worker R PLACEHOLDER(X, I##0) R PLACEHOLDER(X, I##1) R PLACEHOLDER(X, I##2) R PLACEHOLDER(X, I##3) R PLACEHOLDER(X, I##4) \
51*a65addddSAndroid Build Coastguard Worker R PLACEHOLDER(X, I##5) R PLACEHOLDER(X, I##6) R PLACEHOLDER(X, I##7) R PLACEHOLDER(X, I##8) \
52*a65addddSAndroid Build Coastguard Worker R PLACEHOLDER(X, I##9)
53*a65addddSAndroid Build Coastguard Worker
54*a65addddSAndroid Build Coastguard Worker #define META_REPEAT_5(R, X, I) \
55*a65addddSAndroid Build Coastguard Worker R PLACEHOLDER(X, I##0) R PLACEHOLDER(X, I##1) R PLACEHOLDER(X, I##2) R PLACEHOLDER(X, I##3) R PLACEHOLDER(X, I##4)
56*a65addddSAndroid Build Coastguard Worker
57*a65addddSAndroid Build Coastguard Worker #define REPEAT_1(X, I) X(I)
58*a65addddSAndroid Build Coastguard Worker
59*a65addddSAndroid Build Coastguard Worker #define REPEAT_5(X, I) META_REPEAT_5(REPEAT_1, X, I)
60*a65addddSAndroid Build Coastguard Worker
61*a65addddSAndroid Build Coastguard Worker #define REPEAT_10(X, I) META_REPEAT_10(REPEAT_1, X, I)
62*a65addddSAndroid Build Coastguard Worker
63*a65addddSAndroid Build Coastguard Worker #define REPEAT_25(X, I) META_REPEAT_5(REPEAT_5, X, I)
64*a65addddSAndroid Build Coastguard Worker
65*a65addddSAndroid Build Coastguard Worker #define REPEAT_100(X, I) META_REPEAT_10(REPEAT_10, X, I)
66*a65addddSAndroid Build Coastguard Worker
67*a65addddSAndroid Build Coastguard Worker #define REPEAT_250(X, I) META_REPEAT_10(REPEAT_25, X, I)
68*a65addddSAndroid Build Coastguard Worker
69*a65addddSAndroid Build Coastguard Worker #define REPEAT_1000(X, I) META_REPEAT_10(REPEAT_100, X, I)
70*a65addddSAndroid Build Coastguard Worker
71*a65addddSAndroid Build Coastguard Worker using namespace std;
72*a65addddSAndroid Build Coastguard Worker
73*a65addddSAndroid Build Coastguard Worker #define DEFINITIONS(N) \
74*a65addddSAndroid Build Coastguard Worker struct I##N { \
75*a65addddSAndroid Build Coastguard Worker virtual ~I##N() = default; \
76*a65addddSAndroid Build Coastguard Worker }; \
77*a65addddSAndroid Build Coastguard Worker \
78*a65addddSAndroid Build Coastguard Worker struct C##N : public I##N { \
79*a65addddSAndroid Build Coastguard Worker virtual ~C##N() = default; \
80*a65addddSAndroid Build Coastguard Worker };
81*a65addddSAndroid Build Coastguard Worker
82*a65addddSAndroid Build Coastguard Worker #define ALLOCATE(N) C##N* c##N = new C##N();
83*a65addddSAndroid Build Coastguard Worker
84*a65addddSAndroid Build Coastguard Worker #define DEALLOCATE(N) delete c##N;
85*a65addddSAndroid Build Coastguard Worker
EVAL(REPEAT (DEFINITIONS))86*a65addddSAndroid Build Coastguard Worker EVAL(REPEAT(DEFINITIONS))
87*a65addddSAndroid Build Coastguard Worker
88*a65addddSAndroid Build Coastguard Worker int main(int argc, const char* argv[]) {
89*a65addddSAndroid Build Coastguard Worker if (argc != 2) {
90*a65addddSAndroid Build Coastguard Worker std::cout << "Error: you need to specify the number of loops as argument." << std::endl;
91*a65addddSAndroid Build Coastguard Worker return 1;
92*a65addddSAndroid Build Coastguard Worker }
93*a65addddSAndroid Build Coastguard Worker size_t num_loops = std::atoi(argv[1]);
94*a65addddSAndroid Build Coastguard Worker
95*a65addddSAndroid Build Coastguard Worker std::chrono::high_resolution_clock::time_point start_time = std::chrono::high_resolution_clock::now();
96*a65addddSAndroid Build Coastguard Worker
97*a65addddSAndroid Build Coastguard Worker for (size_t i = 0; i < num_loops; i++) {
98*a65addddSAndroid Build Coastguard Worker EVAL(REPEAT(ALLOCATE))
99*a65addddSAndroid Build Coastguard Worker EVAL(REPEAT(DEALLOCATE))
100*a65addddSAndroid Build Coastguard Worker }
101*a65addddSAndroid Build Coastguard Worker double totalTime =
102*a65addddSAndroid Build Coastguard Worker std::chrono::duration_cast<std::chrono::duration<double>>(std::chrono::high_resolution_clock::now() - start_time)
103*a65addddSAndroid Build Coastguard Worker .count();
104*a65addddSAndroid Build Coastguard Worker
105*a65addddSAndroid Build Coastguard Worker std::cout << std::fixed;
106*a65addddSAndroid Build Coastguard Worker std::cout << std::setprecision(15);
107*a65addddSAndroid Build Coastguard Worker std::cout << "Total = " << totalTime * 1.0 / num_loops << std::endl;
108*a65addddSAndroid Build Coastguard Worker
109*a65addddSAndroid Build Coastguard Worker return 0;
110*a65addddSAndroid Build Coastguard Worker }
111