1 //===-- tsan_bench.cpp ----------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file is a part of ThreadSanitizer (TSan), a race detector.
10 //
11 //===----------------------------------------------------------------------===//
12 #include "tsan_test_util.h"
13 #include "tsan_interface.h"
14 #include "tsan_defs.h"
15 #include "gtest/gtest.h"
16 #include <stdint.h>
17
18 const int kSize = 128;
19 const int kRepeat = 2*1024*1024;
20
noinstr(void * p)21 void noinstr(void *p) {}
22
23 template<typename T, void(*__tsan_mop)(void *p)>
Benchmark()24 static void Benchmark() {
25 volatile T data[kSize];
26 for (int i = 0; i < kRepeat; i++) {
27 for (int j = 0; j < kSize; j++) {
28 __tsan_mop((void*)&data[j]);
29 data[j]++;
30 }
31 }
32 }
33
TEST(DISABLED_BENCH,Mop1)34 TEST(DISABLED_BENCH, Mop1) {
35 Benchmark<uint8_t, noinstr>();
36 }
37
TEST(DISABLED_BENCH,Mop1Read)38 TEST(DISABLED_BENCH, Mop1Read) {
39 Benchmark<uint8_t, __tsan_read1>();
40 }
41
TEST(DISABLED_BENCH,Mop1Write)42 TEST(DISABLED_BENCH, Mop1Write) {
43 Benchmark<uint8_t, __tsan_write1>();
44 }
45
TEST(DISABLED_BENCH,Mop2)46 TEST(DISABLED_BENCH, Mop2) {
47 Benchmark<uint16_t, noinstr>();
48 }
49
TEST(DISABLED_BENCH,Mop2Read)50 TEST(DISABLED_BENCH, Mop2Read) {
51 Benchmark<uint16_t, __tsan_read2>();
52 }
53
TEST(DISABLED_BENCH,Mop2Write)54 TEST(DISABLED_BENCH, Mop2Write) {
55 Benchmark<uint16_t, __tsan_write2>();
56 }
57
TEST(DISABLED_BENCH,Mop4)58 TEST(DISABLED_BENCH, Mop4) {
59 Benchmark<uint32_t, noinstr>();
60 }
61
TEST(DISABLED_BENCH,Mop4Read)62 TEST(DISABLED_BENCH, Mop4Read) {
63 Benchmark<uint32_t, __tsan_read4>();
64 }
65
TEST(DISABLED_BENCH,Mop4Write)66 TEST(DISABLED_BENCH, Mop4Write) {
67 Benchmark<uint32_t, __tsan_write4>();
68 }
69
TEST(DISABLED_BENCH,Mop8)70 TEST(DISABLED_BENCH, Mop8) {
71 Benchmark<uint8_t, noinstr>();
72 }
73
TEST(DISABLED_BENCH,Mop8Read)74 TEST(DISABLED_BENCH, Mop8Read) {
75 Benchmark<uint64_t, __tsan_read8>();
76 }
77
TEST(DISABLED_BENCH,Mop8Write)78 TEST(DISABLED_BENCH, Mop8Write) {
79 Benchmark<uint64_t, __tsan_write8>();
80 }
81
TEST(DISABLED_BENCH,FuncCall)82 TEST(DISABLED_BENCH, FuncCall) {
83 for (int i = 0; i < kRepeat; i++) {
84 for (int j = 0; j < kSize; j++)
85 __tsan_func_entry((void*)(uintptr_t)j);
86 for (int j = 0; j < kSize; j++)
87 __tsan_func_exit();
88 }
89 }
90
TEST(DISABLED_BENCH,MutexLocal)91 TEST(DISABLED_BENCH, MutexLocal) {
92 Mutex m;
93 ScopedThread().Create(m);
94 for (int i = 0; i < 50; i++) {
95 ScopedThread t;
96 t.Lock(m);
97 t.Unlock(m);
98 }
99 for (int i = 0; i < 16*1024*1024; i++) {
100 m.Lock();
101 m.Unlock();
102 }
103 ScopedThread().Destroy(m);
104 }
105