Wanger-SJTU commented on code in PR #13158:
URL: https://github.com/apache/tvm/pull/13158#discussion_r1001252288
##########
src/runtime/threading_backend.cc:
##########
@@ -167,7 +169,9 @@ class ThreadGroup::Impl {
CPU_SET(id, &cpuset);
}
#if defined(__ANDROID__)
- sched_setaffinity(thread, sizeof(cpu_set_t), &cpuset);
+ if (sched_setaffinity(pthread_gettid_np(thread), sizeof(cpu_set_t),
&cpuset) != 0) {
Review Comment:
If on older versions than Android21+, there could be compile error with no
func found. In this case, could be record the tid
like
```cpp
std::mutex m;
std::map<std::thread::id, pid_t> threads;
void add_tid_mapping()
{
std::lock_guard<std::mutex> l(m);
threads[std::this_thread::get_id()] = syscall(SYS_gettid);
}
void wrap(void (*f)())
{
add_tid_mapping();
f();
}
```
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