| 1 | // Stress test for https://reviews.llvm.org/D101881 |
|---|---|
| 2 | // RUN: %clangxx_hwasan -DREUSE=0 %s -pthread -O2 -o %t && %run %t 2>&1 |
| 3 | // RUN: %clangxx_hwasan -DREUSE=1 %s -pthread -O2 -o %t_reuse && %run %t_reuse 2>&1 |
| 4 | |
| 5 | #include <thread> |
| 6 | #include <vector> |
| 7 | |
| 8 | #include <sys/types.h> |
| 9 | #include <sys/wait.h> |
| 10 | #include <unistd.h> |
| 11 | |
| 12 | #include <stdio.h> |
| 13 | |
| 14 | constexpr int kTopThreads = 20; |
| 15 | constexpr int kChildThreads = 30; |
| 16 | constexpr int kChildIterations = REUSE ? 8 : 1; |
| 17 | |
| 18 | constexpr int kProcessIterations = 20; |
| 19 | |
| 20 | void Thread() { |
| 21 | for (int i = 0; i < kChildIterations; ++i) { |
| 22 | std::vector<std::thread> threads; |
| 23 | threads.reserve(n: kChildThreads); |
| 24 | for (int i = 0; i < kChildThreads; ++i) |
| 25 | threads.emplace_back(args: []() {}); |
| 26 | for (auto &t : threads) |
| 27 | t.join(); |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | void run() { |
| 32 | std::vector<std::thread> threads; |
| 33 | threads.reserve(n: kTopThreads); |
| 34 | for (int i = 0; i < kTopThreads; ++i) |
| 35 | threads.emplace_back(args&: Thread); |
| 36 | for (auto &t : threads) |
| 37 | t.join(); |
| 38 | } |
| 39 | |
| 40 | int main() { |
| 41 | #if REUSE |
| 42 | // Test thread reuse with multiple iterations of thread create / join in a single process. |
| 43 | run(); |
| 44 | #else |
| 45 | // Test new, non-reused thread creation by running a single iteration of create / join in a freshly started process. |
| 46 | for (int i = 0; i < kProcessIterations; ++i) { |
| 47 | int pid = fork(); |
| 48 | if (pid) { |
| 49 | int wstatus; |
| 50 | do { |
| 51 | waitpid(pid: pid, stat_loc: &wstatus, options: 0); |
| 52 | } while (!WIFEXITED(wstatus) && !WIFSIGNALED(wstatus)); |
| 53 | if (!WIFEXITED(wstatus) || WEXITSTATUS(wstatus)) { |
| 54 | fprintf(stderr, format: "failed at iteration %d / %d\n", i, kProcessIterations); |
| 55 | return 1; |
| 56 | } |
| 57 | } else { |
| 58 | run(); |
| 59 | return 0; |
| 60 | } |
| 61 | } |
| 62 | #endif |
| 63 | } |
| 64 |