75 lines · cpp
1// RUN: rm -rf %t-dir2// RUN: mkdir %t-dir3// RUN: %clangxx_tsan -O1 %s -DLIB -fPIC -fno-sanitize=thread -shared -o %t-dir/libignore_lib.so4// RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t-dir/executable5// RUN: %env_tsan_opts=suppressions='%s.supp' %run %t-dir/executable 2>&1 | FileCheck %s6 7// Copied from ignore_lib5.cpp:8// REQUIRES: stable-runtime9// UNSUPPORTED: target=powerpc64le{{.*}}10// UNSUPPORTED: target={{.*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/ecH2P0QUqPs15 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 LIB26 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: DONE56// CHECK-NOT: WARNING: ThreadSanitizer:57 58#else // #ifdef LIB59 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 LIB75