source:
benchmark/bench.h
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f678c53b
Last change on this file since f678c53b was ce9f9d4, checked in by , 3 years ago | |
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[8cb6fcd] | 1 | #pragma once |
2 | ||
[0cf5b79] | 3 | #if defined(__cforall) |
[8cb6fcd] | 4 | extern "C" { |
[d67cdb7] | 5 | #endif |
[034165a] | 6 | #include <stdlib.h> |
[846c026] | 7 | #include <stdint.h> // uint64_t |
8 | #include <unistd.h> // sysconf | |
[9d32bc8] | 9 | #if ! defined(__cforall) |
10 | #include <time.h> | |
11 | #include <sys/time.h> | |
12 | #else | |
[8cb6fcd] | 13 | } |
[73abe95] | 14 | #include <time.hfa> |
[d67cdb7] | 15 | #endif |
[8cb6fcd] | 16 | |
[d8548e2] | 17 | |
[846c026] | 18 | static inline uint64_t bench_time() { |
19 | struct timespec ts; | |
20 | clock_gettime( CLOCK_THREAD_CPUTIME_ID, &ts ); | |
21 | return 1000000000LL * ts.tv_sec + ts.tv_nsec; | |
22 | } // bench_time | |
[8cb6fcd] | 23 | |
[ce9f9d4] | 24 | |
25 | #if defined(__cforall) | |
26 | struct test_spinlock { | |
27 | volatile bool lock; | |
28 | }; | |
29 | ||
30 | static inline void lock( test_spinlock & this ) { | |
31 | for ( ;; ) { | |
32 | if ( (this.lock == 0) && (__atomic_test_and_set( &this.lock, __ATOMIC_ACQUIRE ) == 0) ) break; | |
33 | } | |
34 | } | |
35 | ||
36 | static inline void unlock( test_spinlock & this ) { | |
37 | __atomic_clear( &this.lock, __ATOMIC_RELEASE ); | |
38 | } | |
39 | #endif | |
40 | ||
[034165a] | 41 | #ifndef BENCH_N |
[846c026] | 42 | #define BENCH_N 10000000 |
[7286a40] | 43 | #endif |
44 | ||
[846c026] | 45 | size_t times = BENCH_N; |
46 | ||
47 | #define BENCH_START() \ | |
48 | if ( argc > 2 ) exit( EXIT_FAILURE ); \ | |
49 | if ( argc == 2 ) { \ | |
50 | times = atoi( argv[1] ); \ | |
51 | } | |
52 | ||
[034165a] | 53 | #define BENCH(statement, output) \ |
[846c026] | 54 | uint64_t StartTime, EndTime; \ |
[9d32bc8] | 55 | StartTime = bench_time(); \ |
[846c026] | 56 | statement; \ |
[9d32bc8] | 57 | EndTime = bench_time(); \ |
[846c026] | 58 | double output = (double)( EndTime - StartTime ) / times; |
59 | ||
[034165a] | 60 | |
[9d32bc8] | 61 | #if defined(__cforall) |
[399a908] | 62 | Duration default_preemption() { |
[7286a40] | 63 | return 0; |
[8ad6533] | 64 | } |
[9d32bc8] | 65 | #endif |
[846c026] | 66 | #if defined(__U_CPLUSPLUS__) |
67 | unsigned int uDefaultPreemption() { | |
68 | return 0; | |
69 | } | |
70 | #endif |
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