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
18const int kSize = 128;
19const int kRepeat = 2*1024*1024;
20
21void noinstr(void *p) {}
22
23template<typename T, void(*__tsan_mop)(void *p)>
24static 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
34TEST(DISABLED_BENCH, Mop1) {
35 Benchmark<uint8_t, noinstr>();
36}
37
38TEST(DISABLED_BENCH, Mop1Read) {
39 Benchmark<uint8_t, __tsan_read1>();
40}
41
42TEST(DISABLED_BENCH, Mop1Write) {
43 Benchmark<uint8_t, __tsan_write1>();
44}
45
46TEST(DISABLED_BENCH, Mop2) {
47 Benchmark<uint16_t, noinstr>();
48}
49
50TEST(DISABLED_BENCH, Mop2Read) {
51 Benchmark<uint16_t, __tsan_read2>();
52}
53
54TEST(DISABLED_BENCH, Mop2Write) {
55 Benchmark<uint16_t, __tsan_write2>();
56}
57
58TEST(DISABLED_BENCH, Mop4) {
59 Benchmark<uint32_t, noinstr>();
60}
61
62TEST(DISABLED_BENCH, Mop4Read) {
63 Benchmark<uint32_t, __tsan_read4>();
64}
65
66TEST(DISABLED_BENCH, Mop4Write) {
67 Benchmark<uint32_t, __tsan_write4>();
68}
69
70TEST(DISABLED_BENCH, Mop8) {
71 Benchmark<uint8_t, noinstr>();
72}
73
74TEST(DISABLED_BENCH, Mop8Read) {
75 Benchmark<uint64_t, __tsan_read8>();
76}
77
78TEST(DISABLED_BENCH, Mop8Write) {
79 Benchmark<uint64_t, __tsan_write8>();
80}
81
82TEST(DISABLED_BENCH, FuncCall) {
83 for (int i = 0; i < kRepeat; i++) {
84 for (int j = 0; j < kSize; j++)
85 __tsan_func_entry(call_pc: (void*)(uintptr_t)j);
86 for (int j = 0; j < kSize; j++)
87 __tsan_func_exit();
88 }
89}
90
91TEST(DISABLED_BENCH, MutexLocal) {
92 UserMutex 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

source code of compiler-rt/lib/tsan/tests/rtl/tsan_bench.cpp