1 // RUN: %clangxx_tsan -O1 %s -o %t 2 // RUN: %deflake %run %t 2>&1 | FileCheck %s 3 4 #include <pthread.h> 5 #include <stdint.h> 6 #include <stdio.h> 7 #include <stdlib.h> 8 #include <string.h> 9 10 #include "test.h" 11 12 extern "C" { 13 void __tsan_on_report(void *report); 14 void *__tsan_get_current_report(); 15 int __tsan_get_report_data(void *report, const char **description, int *count, 16 int *stack_count, int *mop_count, int *loc_count, 17 int *mutex_count, int *thread_count, 18 int *unique_tid_count, void **sleep_trace, 19 unsigned long trace_size); 20 int __tsan_get_report_mop(void *report, unsigned long idx, int *tid, 21 void **addr, int *size, int *write, int *atomic, 22 void **trace, unsigned long trace_size); 23 int __tsan_get_report_thread(void *report, unsigned long idx, int *tid, 24 uint64_t *os_id, int *running, 25 const char **name, int *parent_tid, void **trace, 26 unsigned long trace_size); 27 } 28 29 long my_global; 30 31 void *Thread(void *a) { 32 barrier_wait(&barrier); 33 my_global = 42; 34 return NULL; 35 } 36 37 int main() { 38 barrier_init(&barrier, 2); 39 fprintf(stderr, "&my_global = %p\n", &my_global); 40 // CHECK: &my_global = [[GLOBAL:0x[0-9a-f]+]] 41 pthread_t t; 42 pthread_create(&t, 0, Thread, 0); 43 my_global = 41; 44 barrier_wait(&barrier); 45 pthread_join(t, 0); 46 fprintf(stderr, "Done.\n"); 47 } 48 49 __attribute__((disable_sanitizer_instrumentation)) void 50 __tsan_on_report(void *report) { 51 fprintf(stderr, "__tsan_on_report(%p)\n", report); 52 fprintf(stderr, "__tsan_get_current_report() = %p\n", 53 __tsan_get_current_report()); 54 // CHECK: __tsan_on_report([[REPORT:0x[0-9a-f]+]]) 55 // CHECK: __tsan_get_current_report() = [[REPORT]] 56 57 const char *description; 58 int count; 59 int stack_count, mop_count, loc_count, mutex_count, thread_count, 60 unique_tid_count; 61 void *sleep_trace[16] = {0}; 62 __tsan_get_report_data(report, &description, &count, &stack_count, &mop_count, 63 &loc_count, &mutex_count, &thread_count, 64 &unique_tid_count, sleep_trace, 16); 65 fprintf(stderr, "report type = '%s', count = %d\n", description, count); 66 // CHECK: report type = 'data-race', count = 0 67 68 fprintf(stderr, "mop_count = %d\n", mop_count); 69 // CHECK: mop_count = 2 70 71 int tid; 72 void *addr; 73 int size, write, atomic; 74 void *trace[16] = {0}; 75 76 __tsan_get_report_mop(report, 0, &tid, &addr, &size, &write, &atomic, trace, 77 16); 78 fprintf(stderr, "tid = %d, addr = %p, size = %d, write = %d, atomic = %d\n", 79 tid, addr, size, write, atomic); 80 // CHECK: tid = 1, addr = [[GLOBAL]], size = 8, write = 1, atomic = 0 81 fprintf(stderr, "trace[0] = %p, trace[1] = %p\n", trace[0], trace[1]); 82 // CHECK: trace[0] = 0x{{[0-9a-f]+}}, trace[1] = {{0x0|\(nil\)|\(null\)}} 83 84 __tsan_get_report_mop(report, 1, &tid, &addr, &size, &write, &atomic, trace, 85 16); 86 fprintf(stderr, "tid = %d, addr = %p, size = %d, write = %d, atomic = %d\n", 87 tid, addr, size, write, atomic); 88 // CHECK: tid = 0, addr = [[GLOBAL]], size = 8, write = 1, atomic = 0 89 fprintf(stderr, "trace[0] = %p, trace[1] = %p\n", trace[0], trace[1]); 90 // CHECK: trace[0] = 0x{{[0-9a-f]+}}, trace[1] = {{0x0|\(nil\)|\(null\)}} 91 92 fprintf(stderr, "thread_count = %d\n", thread_count); 93 // CHECK: thread_count = 2 94 95 uint64_t os_id; 96 int running; 97 const char *name; 98 int parent_tid; 99 100 __tsan_get_report_thread(report, 0, &tid, &os_id, &running, &name, &parent_tid, trace, 16); 101 fprintf(stderr, "tid = %d\n", tid); 102 // CHECK: tid = 1 103 104 __tsan_get_report_thread(report, 1, &tid, &os_id, &running, &name, &parent_tid, trace, 16); 105 fprintf(stderr, "tid = %d\n", tid); 106 // CHECK: tid = 0 107 } 108 109 // CHECK: Done. 110 // CHECK: ThreadSanitizer: reported 1 warnings 111