1 //===-- tsan_posix.cc -----------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is a part of ThreadSanitizer (TSan), a race detector. 11 // 12 //===----------------------------------------------------------------------===// 13 #include "tsan_interface.h" 14 #include "tsan_test_util.h" 15 #include "gtest/gtest.h" 16 #include <pthread.h> 17 18 struct thread_key { 19 pthread_key_t key; 20 pthread_mutex_t *mtx; 21 int val; 22 int *cnt; 23 thread_key(pthread_key_t key, pthread_mutex_t *mtx, int val, int *cnt) 24 : key(key) 25 , mtx(mtx) 26 , val(val) 27 , cnt(cnt) { 28 } 29 }; 30 31 static void thread_secific_dtor(void *v) { 32 thread_key *k = (thread_key *)v; 33 EXPECT_EQ(pthread_mutex_lock(k->mtx), 0); 34 (*k->cnt)++; 35 __tsan_write4(&k->cnt); 36 EXPECT_EQ(pthread_mutex_unlock(k->mtx), 0); 37 if (k->val == 42) { 38 delete k; 39 } else if (k->val == 43 || k->val == 44) { 40 k->val--; 41 EXPECT_EQ(pthread_setspecific(k->key, k), 0); 42 } else { 43 ASSERT_TRUE(false); 44 } 45 } 46 47 static void *dtors_thread(void *p) { 48 thread_key *k = (thread_key *)p; 49 EXPECT_EQ(pthread_setspecific(k->key, k), 0); 50 return 0; 51 } 52 53 TEST(Posix, ThreadSpecificDtors) { 54 int cnt = 0; 55 pthread_key_t key; 56 EXPECT_EQ(pthread_key_create(&key, thread_secific_dtor), 0); 57 pthread_mutex_t mtx; 58 EXPECT_EQ(pthread_mutex_init(&mtx, 0), 0); 59 pthread_t th[3]; 60 thread_key *k[3]; 61 k[0] = new thread_key(key, &mtx, 42, &cnt); 62 k[1] = new thread_key(key, &mtx, 43, &cnt); 63 k[2] = new thread_key(key, &mtx, 44, &cnt); 64 EXPECT_EQ(pthread_create(&th[0], 0, dtors_thread, k[0]), 0); 65 EXPECT_EQ(pthread_create(&th[1], 0, dtors_thread, k[1]), 0); 66 EXPECT_EQ(pthread_join(th[0], 0), 0); 67 EXPECT_EQ(pthread_create(&th[2], 0, dtors_thread, k[2]), 0); 68 EXPECT_EQ(pthread_join(th[1], 0), 0); 69 EXPECT_EQ(pthread_join(th[2], 0), 0); 70 EXPECT_EQ(pthread_key_delete(key), 0); 71 EXPECT_EQ(6, cnt); 72 } 73 74 static __thread int local_var; 75 76 static void *local_thread(void *p) { 77 __tsan_write1(&local_var); 78 __tsan_write1(&p); 79 if (p == 0) 80 return 0; 81 const int kThreads = 4; 82 pthread_t th[kThreads]; 83 for (int i = 0; i < kThreads; i++) 84 EXPECT_EQ(pthread_create(&th[i], 0, local_thread, 85 (void*)((long)p - 1)), 0); // NOLINT 86 for (int i = 0; i < kThreads; i++) 87 EXPECT_EQ(pthread_join(th[i], 0), 0); 88 return 0; 89 } 90 91 TEST(Posix, ThreadLocalAccesses) { 92 local_thread((void*)2); 93 } 94 95 struct CondContext { 96 pthread_mutex_t m; 97 pthread_cond_t c; 98 int data; 99 }; 100 101 static void *cond_thread(void *p) { 102 CondContext &ctx = *static_cast<CondContext*>(p); 103 104 EXPECT_EQ(pthread_mutex_lock(&ctx.m), 0); 105 EXPECT_EQ(ctx.data, 0); 106 ctx.data = 1; 107 EXPECT_EQ(pthread_cond_signal(&ctx.c), 0); 108 EXPECT_EQ(pthread_mutex_unlock(&ctx.m), 0); 109 110 EXPECT_EQ(pthread_mutex_lock(&ctx.m), 0); 111 while (ctx.data != 2) 112 EXPECT_EQ(pthread_cond_wait(&ctx.c, &ctx.m), 0); 113 EXPECT_EQ(pthread_mutex_unlock(&ctx.m), 0); 114 115 EXPECT_EQ(pthread_mutex_lock(&ctx.m), 0); 116 ctx.data = 3; 117 EXPECT_EQ(pthread_cond_broadcast(&ctx.c), 0); 118 EXPECT_EQ(pthread_mutex_unlock(&ctx.m), 0); 119 120 return 0; 121 } 122 123 TEST(Posix, CondBasic) { 124 CondContext ctx; 125 EXPECT_EQ(pthread_mutex_init(&ctx.m, 0), 0); 126 EXPECT_EQ(pthread_cond_init(&ctx.c, 0), 0); 127 ctx.data = 0; 128 pthread_t th; 129 EXPECT_EQ(pthread_create(&th, 0, cond_thread, &ctx), 0); 130 131 EXPECT_EQ(pthread_mutex_lock(&ctx.m), 0); 132 while (ctx.data != 1) 133 EXPECT_EQ(pthread_cond_wait(&ctx.c, &ctx.m), 0); 134 ctx.data = 2; 135 EXPECT_EQ(pthread_mutex_unlock(&ctx.m), 0); 136 EXPECT_EQ(pthread_cond_broadcast(&ctx.c), 0); 137 138 EXPECT_EQ(pthread_mutex_lock(&ctx.m), 0); 139 while (ctx.data != 3) 140 EXPECT_EQ(pthread_cond_wait(&ctx.c, &ctx.m), 0); 141 EXPECT_EQ(pthread_mutex_unlock(&ctx.m), 0); 142 143 EXPECT_EQ(pthread_join(th, 0), 0); 144 EXPECT_EQ(pthread_cond_destroy(&ctx.c), 0); 145 EXPECT_EQ(pthread_mutex_destroy(&ctx.m), 0); 146 } 147
