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