1// RUN: rm -rf %t-dir
2// RUN: mkdir %t-dir
3// RUN: %clangxx_tsan -O1 %s -DLIB -fPIC -fno-sanitize=thread -shared -o %t-dir/libignore_lib.so
4// RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t-dir/executable
5// RUN: %env_tsan_opts=suppressions='%s.supp' %run %t-dir/executable 2>&1 | FileCheck %s
6
7// Copied from ignore_lib5.cpp:
8// REQUIRES: stable-runtime
9// UNSUPPORTED: powerpc64le
10// UNSUPPORTED: netbsd
11
12// Test that pthread_detach works in libraries ignored by called_from_lib.
13// For more context see:
14// https://groups.google.com/forum/#!topic/thread-sanitizer/ecH2P0QUqPs
15
16#include "test.h"
17#include <dlfcn.h>
18#include <errno.h>
19#include <libgen.h>
20#include <stdio.h>
21#include <stdlib.h>
22#include <string>
23#include <sys/mman.h>
24
25#ifndef LIB
26
27void *thr(void *arg) {
28 *(volatile long long *)arg = 1;
29 return 0;
30}
31
32int main(int argc, char **argv) {
33 std::string lib = std::string(dirname(argv[0])) + "/libignore_lib.so";
34 void *h = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
35 if (h == 0)
36 exit(printf("failed to load the library (%d)\n", errno));
37 void (*libfunc)() = (void (*)())dlsym(h, "libfunc");
38 if (libfunc == 0)
39 exit(printf("failed to find the func (%d)\n", errno));
40 libfunc();
41
42 const int kThreads = 10;
43 pthread_t t[kThreads];
44 volatile long long data[kThreads];
45 for (int i = 0; i < kThreads; i++)
46 pthread_create(&t[i], 0, thr, (void *)&data[i]);
47 for (int i = 0; i < kThreads; i++) {
48 pthread_join(t[i], 0);
49 data[i] = 2;
50 }
51 fprintf(stderr, "DONE\n");
52}
53
54// CHECK-NOT: WARNING: ThreadSanitizer:
55// CHECK: DONE
56// CHECK-NOT: WARNING: ThreadSanitizer:
57
58#else // #ifdef LIB
59
60void *thr(void *p) {
61 sleep(1);
62 pthread_detach(pthread_self());
63 return 0;
64}
65
66extern "C" void libfunc() {
67 const int kThreads = 10;
68 pthread_t t[kThreads];
69 for (int i = 0; i < kThreads; i++)
70 pthread_create(&t[i], 0, thr, 0);
71 sleep(2);
72}
73
74#endif // #ifdef LIB
75