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
12extern "C" {
13void __tsan_on_report(void *report);
14void *__tsan_get_current_report();
15int __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);
20int __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);
23int __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
29long my_global;
30
31void *Thread(void *a) {
32 barrier_wait(barrier: &barrier);
33 my_global = 42;
34 return NULL;
35}
36
37int main() {
38 barrier_init(barrier: &barrier, count: 2);
39 fprintf(stderr, format: "&my_global = %p\n", &my_global);
40 // CHECK: &my_global = [[GLOBAL:0x[0-9a-f]+]]
41 pthread_t t;
42 pthread_create(newthread: &t, attr: 0, start_routine: Thread, arg: 0);
43 my_global = 41;
44 barrier_wait(barrier: &barrier);
45 pthread_join(th: t, thread_return: 0);
46 fprintf(stderr, format: "Done.\n");
47}
48
49// Required for dyld macOS 12.0+
50#if (__APPLE__)
51__attribute__((weak))
52#endif
53__attribute__((disable_sanitizer_instrumentation))
54extern "C" void
55__tsan_on_report(void *report) {
56 fprintf(stderr, format: "__tsan_on_report(%p)\n", report);
57 fprintf(stderr, format: "__tsan_get_current_report() = %p\n",
58 __tsan_get_current_report());
59 // CHECK: __tsan_on_report([[REPORT:0x[0-9a-f]+]])
60 // CHECK: __tsan_get_current_report() = [[REPORT]]
61
62 const char *description;
63 int count;
64 int stack_count, mop_count, loc_count, mutex_count, thread_count,
65 unique_tid_count;
66 void *sleep_trace[16] = {0};
67 __tsan_get_report_data(report, description: &description, count: &count, stack_count: &stack_count, mop_count: &mop_count,
68 loc_count: &loc_count, mutex_count: &mutex_count, thread_count: &thread_count,
69 unique_tid_count: &unique_tid_count, sleep_trace, trace_size: 16);
70 fprintf(stderr, format: "report type = '%s', count = %d\n", description, count);
71 // CHECK: report type = 'data-race', count = 0
72
73 fprintf(stderr, format: "mop_count = %d\n", mop_count);
74 // CHECK: mop_count = 2
75
76 int tid;
77 void *addr;
78 int size, write, atomic;
79 void *trace[16] = {0};
80
81 __tsan_get_report_mop(report, idx: 0, tid: &tid, addr: &addr, size: &size, write: &write, atomic: &atomic, trace,
82 trace_size: 16);
83 fprintf(stderr, format: "tid = %d, addr = %p, size = %d, write = %d, atomic = %d\n",
84 tid, addr, size, write, atomic);
85 // CHECK: tid = 1, addr = [[GLOBAL]], size = 8, write = 1, atomic = 0
86 fprintf(stderr, format: "trace[0] = %p, trace[1] = %p\n", trace[0], trace[1]);
87 // CHECK: trace[0] = 0x{{[0-9a-f]+}}, trace[1] = {{0x0|\(nil\)|\(null\)}}
88
89 __tsan_get_report_mop(report, idx: 1, tid: &tid, addr: &addr, size: &size, write: &write, atomic: &atomic, trace,
90 trace_size: 16);
91 fprintf(stderr, format: "tid = %d, addr = %p, size = %d, write = %d, atomic = %d\n",
92 tid, addr, size, write, atomic);
93 // CHECK: tid = 0, addr = [[GLOBAL]], size = 8, write = 1, atomic = 0
94 fprintf(stderr, format: "trace[0] = %p, trace[1] = %p\n", trace[0], trace[1]);
95 // CHECK: trace[0] = 0x{{[0-9a-f]+}}, trace[1] = {{0x0|\(nil\)|\(null\)}}
96
97 fprintf(stderr, format: "thread_count = %d\n", thread_count);
98 // CHECK: thread_count = 2
99
100 uint64_t os_id;
101 int running;
102 const char *name;
103 int parent_tid;
104
105 __tsan_get_report_thread(report, idx: 0, tid: &tid, os_id: &os_id, running: &running, name: &name, parent_tid: &parent_tid, trace, trace_size: 16);
106 fprintf(stderr, format: "tid = %d\n", tid);
107 // CHECK: tid = 1
108
109 __tsan_get_report_thread(report, idx: 1, tid: &tid, os_id: &os_id, running: &running, name: &name, parent_tid: &parent_tid, trace, trace_size: 16);
110 fprintf(stderr, format: "tid = %d\n", tid);
111 // CHECK: tid = 0
112}
113
114// CHECK: Done.
115// CHECK: ThreadSanitizer: reported 1 warnings
116

source code of compiler-rt/test/tsan/debugging.cpp