| // Check that if the list of shared libraries changes between the two race |
| // reports, the second report occurring in a new shared library is still |
| // symbolized correctly. |
| |
| // RUN: %clangxx_tsan -O1 %s -DBUILD_SO -fPIC -shared -o %t-so.so |
| // RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t -rdynamic && %deflake %run %t | FileCheck %s |
| |
| #ifdef BUILD_SO |
| |
| #include "test.h" |
| |
| int GLOB_SHARED = 0; |
| |
| extern "C" |
| void init_so() { |
| barrier_init(&barrier, 2); |
| } |
| |
| extern "C" |
| void *write_from_so(void *unused) { |
| if (unused == 0) |
| barrier_wait(&barrier); |
| GLOB_SHARED++; |
| if (unused != 0) |
| barrier_wait(&barrier); |
| return NULL; |
| } |
| |
| #else // BUILD_SO |
| |
| #include "test.h" |
| #include <dlfcn.h> |
| #include <string> |
| |
| int GLOB = 0; |
| |
| void *write_glob(void *unused) { |
| if (unused == 0) |
| barrier_wait(&barrier); |
| GLOB++; |
| if (unused != 0) |
| barrier_wait(&barrier); |
| return NULL; |
| } |
| |
| void race_two_threads(void *(*access_callback)(void *unused)) { |
| pthread_t t1, t2; |
| pthread_create(&t1, NULL, access_callback, (void*)1); |
| pthread_create(&t2, NULL, access_callback, NULL); |
| pthread_join(t1, NULL); |
| pthread_join(t2, NULL); |
| } |
| |
| int main(int argc, char *argv[]) { |
| barrier_init(&barrier, 2); |
| std::string path = std::string(argv[0]) + std::string("-so.so"); |
| race_two_threads(write_glob); |
| // CHECK: write_glob |
| void *lib = dlopen(path.c_str(), RTLD_NOW); |
| if (!lib) { |
| printf("error in dlopen(): %s\n", dlerror()); |
| return 1; |
| } |
| void (*init_so)(); |
| *(void **)&init_so = dlsym(lib, "init_so"); |
| init_so(); |
| void *(*write_from_so)(void *unused); |
| *(void **)&write_from_so = dlsym(lib, "write_from_so"); |
| race_two_threads(write_from_so); |
| // CHECK: write_from_so |
| return 0; |
| } |
| |
| #endif // BUILD_SO |