|
150
|
1 // RUN: %clangxx_tsan -O1 %s -DBUILD_SO -fPIC -shared -o %t-so.so
|
|
|
2 // RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t && %run %t 2>&1 | FileCheck %s
|
|
|
3
|
|
|
4 // dl_iterate_phdr doesn't exist on OS X.
|
|
|
5 // UNSUPPORTED: darwin
|
|
|
6
|
|
|
7 #ifdef BUILD_SO
|
|
|
8
|
|
|
9 #include "test.h"
|
|
|
10
|
|
|
11 int exported_var = 0;
|
|
|
12
|
|
|
13 #else // BUILD_SO
|
|
|
14
|
|
|
15 #include "test.h"
|
|
|
16 #include <dlfcn.h>
|
|
|
17 #include <link.h>
|
|
|
18 #include <string.h>
|
|
|
19 #include <string>
|
|
|
20
|
|
|
21 static int callback(struct dl_phdr_info *info, size_t size, void *data) {
|
|
|
22 if (info->dlpi_name[0] == '\0')
|
|
|
23 info->dlpi_name = "/proc/self/exe";
|
|
|
24 return !strcmp(info->dlpi_name, "non existent module");
|
|
|
25 }
|
|
|
26
|
|
|
27 void *thread(void *unused) {
|
|
|
28 for (int i = 0; i < 1000; i++) {
|
|
|
29 barrier_wait(&barrier);
|
|
|
30 dl_iterate_phdr(callback, 0);
|
|
|
31 }
|
|
|
32 return 0;
|
|
|
33 }
|
|
|
34
|
|
|
35 int main(int argc, char *argv[]) {
|
|
|
36 barrier_init(&barrier, 2);
|
|
|
37 std::string path = std::string(argv[0]) + std::string("-so.so");
|
|
|
38 pthread_t th;
|
|
|
39 pthread_create(&th, 0, thread, 0);
|
|
|
40 for (int i = 0; i < 1000; i++) {
|
|
|
41 barrier_wait(&barrier);
|
|
|
42 void *lib = dlopen(path.c_str(), RTLD_NOW);
|
|
|
43 if (!lib) {
|
|
|
44 printf("error in dlopen: %s\n", dlerror());
|
|
|
45 return 1;
|
|
|
46 }
|
|
|
47 dlclose(lib);
|
|
|
48 }
|
|
|
49 pthread_join(th, 0);
|
|
|
50 fprintf(stderr, "DONE\n");
|
|
|
51 return 0;
|
|
|
52 }
|
|
|
53
|
|
|
54 #endif // BUILD_SO
|
|
|
55
|
|
|
56 // CHECK-NOT: WARNING: ThreadSanitizer: data race
|
|
|
57 // CHECK: DONE
|
