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150
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1 // RUN: %clangxx_tsan -O1 %s -o %t
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2 // RUN: %deflake %run %t 2>&1 | FileCheck %s
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3
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4 #include <pthread.h>
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5 #include <stdint.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9
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10 #include "test.h"
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11
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12 extern "C" {
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13 void __tsan_on_report(void *report);
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14 void *__tsan_get_current_report();
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15 int __tsan_get_report_data(void *report, const char **description, int *count,
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16 int *stack_count, int *mop_count, int *loc_count,
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17 int *mutex_count, int *thread_count,
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18 int *unique_tid_count, void **sleep_trace,
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19 unsigned long trace_size);
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20 int __tsan_get_report_mop(void *report, unsigned long idx, int *tid,
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21 void **addr, int *size, int *write, int *atomic,
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22 void **trace, unsigned long trace_size);
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23 int __tsan_get_report_thread(void *report, unsigned long idx, int *tid,
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24 uint64_t *os_id, int *running,
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25 const char **name, int *parent_tid, void **trace,
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26 unsigned long trace_size);
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27 }
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28
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29 long my_global;
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30
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31 void *Thread(void *a) {
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32 barrier_wait(&barrier);
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33 my_global = 42;
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34 return NULL;
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35 }
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36
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37 int main() {
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38 barrier_init(&barrier, 2);
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39 fprintf(stderr, "&my_global = %p\n", &my_global);
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40 // CHECK: &my_global = [[GLOBAL:0x[0-9a-f]+]]
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41 pthread_t t;
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42 pthread_create(&t, 0, Thread, 0);
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43 my_global = 41;
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44 barrier_wait(&barrier);
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45 pthread_join(t, 0);
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46 fprintf(stderr, "Done.\n");
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47 }
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48
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236
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49 // Required for dyld macOS 12.0+
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50 #if (__APPLE__)
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51 __attribute__((weak))
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52 #endif
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53 __attribute__((disable_sanitizer_instrumentation))
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54 extern "C" void
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55 __tsan_on_report(void *report) {
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150
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56 fprintf(stderr, "__tsan_on_report(%p)\n", report);
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57 fprintf(stderr, "__tsan_get_current_report() = %p\n",
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58 __tsan_get_current_report());
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59 // CHECK: __tsan_on_report([[REPORT:0x[0-9a-f]+]])
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60 // CHECK: __tsan_get_current_report() = [[REPORT]]
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61
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62 const char *description;
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63 int count;
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64 int stack_count, mop_count, loc_count, mutex_count, thread_count,
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65 unique_tid_count;
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66 void *sleep_trace[16] = {0};
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67 __tsan_get_report_data(report, &description, &count, &stack_count, &mop_count,
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68 &loc_count, &mutex_count, &thread_count,
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69 &unique_tid_count, sleep_trace, 16);
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70 fprintf(stderr, "report type = '%s', count = %d\n", description, count);
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71 // CHECK: report type = 'data-race', count = 0
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72
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73 fprintf(stderr, "mop_count = %d\n", mop_count);
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74 // CHECK: mop_count = 2
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75
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76 int tid;
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77 void *addr;
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78 int size, write, atomic;
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79 void *trace[16] = {0};
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80
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81 __tsan_get_report_mop(report, 0, &tid, &addr, &size, &write, &atomic, trace,
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82 16);
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83 fprintf(stderr, "tid = %d, addr = %p, size = %d, write = %d, atomic = %d\n",
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84 tid, addr, size, write, atomic);
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85 // CHECK: tid = 1, addr = [[GLOBAL]], size = 8, write = 1, atomic = 0
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86 fprintf(stderr, "trace[0] = %p, trace[1] = %p\n", trace[0], trace[1]);
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87 // CHECK: trace[0] = 0x{{[0-9a-f]+}}, trace[1] = {{0x0|\(nil\)|\(null\)}}
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88
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89 __tsan_get_report_mop(report, 1, &tid, &addr, &size, &write, &atomic, trace,
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90 16);
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91 fprintf(stderr, "tid = %d, addr = %p, size = %d, write = %d, atomic = %d\n",
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92 tid, addr, size, write, atomic);
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93 // CHECK: tid = 0, addr = [[GLOBAL]], size = 8, write = 1, atomic = 0
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94 fprintf(stderr, "trace[0] = %p, trace[1] = %p\n", trace[0], trace[1]);
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95 // CHECK: trace[0] = 0x{{[0-9a-f]+}}, trace[1] = {{0x0|\(nil\)|\(null\)}}
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96
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97 fprintf(stderr, "thread_count = %d\n", thread_count);
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98 // CHECK: thread_count = 2
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99
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100 uint64_t os_id;
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101 int running;
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102 const char *name;
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103 int parent_tid;
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104
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105 __tsan_get_report_thread(report, 0, &tid, &os_id, &running, &name, &parent_tid, trace, 16);
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106 fprintf(stderr, "tid = %d\n", tid);
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107 // CHECK: tid = 1
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108
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109 __tsan_get_report_thread(report, 1, &tid, &os_id, &running, &name, &parent_tid, trace, 16);
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110 fprintf(stderr, "tid = %d\n", tid);
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111 // CHECK: tid = 0
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112 }
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113
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114 // CHECK: Done.
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115 // CHECK: ThreadSanitizer: reported 1 warnings
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