1 // RUN: %clangxx_tsan -O1 %s -o %t 2 // RUN: %run %t 2>&1 | FileCheck %s 3 // RUN: %run %t arg 2>&1 | FileCheck %s 4 #include "java.h" 5 6 jptr varaddr1_old; 7 jptr varaddr2_old; 8 jptr lockaddr1_old; 9 jptr lockaddr2_old; 10 jptr varaddr1_new; 11 jptr varaddr2_new; 12 jptr lockaddr1_new; 13 jptr lockaddr2_new; 14 15 void *Thread(void *p) { 16 barrier_wait(&barrier); 17 __tsan_java_mutex_lock(lockaddr1_new); 18 *(char*)varaddr1_new = 43; 19 __tsan_java_mutex_unlock(lockaddr1_new); 20 __tsan_java_mutex_lock(lockaddr2_new); 21 *(char*)varaddr2_new = 43; 22 __tsan_java_mutex_unlock(lockaddr2_new); 23 return 0; 24 } 25 26 int main(int argc, char **argv) { 27 barrier_init(&barrier, 2); 28 int const kHeapSize = 1024 * 1024; 29 void *jheap = malloc(kHeapSize); 30 jheap = (char*)jheap + 8; 31 __tsan_java_init((jptr)jheap, kHeapSize); 32 const int kBlockSize = 64; 33 int const kMove = 32; 34 varaddr1_old = (jptr)jheap; 35 lockaddr1_old = (jptr)jheap + 1; 36 varaddr2_old = (jptr)jheap + kBlockSize - 1; 37 lockaddr2_old = (jptr)jheap + kBlockSize - 16; 38 varaddr1_new = varaddr1_old + kMove; 39 lockaddr1_new = lockaddr1_old + kMove; 40 varaddr2_new = varaddr2_old + kMove; 41 lockaddr2_new = lockaddr2_old + kMove; 42 if (argc > 1) { 43 // Move memory backwards. 44 varaddr1_old += kMove; 45 lockaddr1_old += kMove; 46 varaddr2_old += kMove; 47 lockaddr2_old += kMove; 48 varaddr1_new -= kMove; 49 lockaddr1_new -= kMove; 50 varaddr2_new -= kMove; 51 lockaddr2_new -= kMove; 52 } 53 __tsan_java_alloc(varaddr1_old, kBlockSize); 54 55 pthread_t th; 56 pthread_create(&th, 0, Thread, 0); 57 58 __tsan_java_mutex_lock(lockaddr1_old); 59 *(char*)varaddr1_old = 43; 60 __tsan_java_mutex_unlock(lockaddr1_old); 61 __tsan_java_mutex_lock(lockaddr2_old); 62 *(char*)varaddr2_old = 43; 63 __tsan_java_mutex_unlock(lockaddr2_old); 64 65 __tsan_java_move(varaddr1_old, varaddr1_new, kBlockSize); 66 barrier_wait(&barrier); 67 pthread_join(th, 0); 68 __tsan_java_free(varaddr1_new, kBlockSize); 69 fprintf(stderr, "DONE\n"); 70 return __tsan_java_fini(); 71 } 72 73 // CHECK-NOT: WARNING: ThreadSanitizer: data race 74 // CHECK: DONE 75
