Function GetPoolTlsIndex

cpp/src/arrow/util/thread_pool.cc:649–659

namespace {
DWORD GetPoolTlsIndex() {
  static DWORD index = [] {
    DWORD i = TlsAlloc();
    if (i == TLS_OUT_OF_INDEXES) {
      ARROW_LOG(FATAL) << "TlsAlloc failed for thread pool TLS: "
                       << WinErrorMessage(GetLastError());
    }
    return i;
  }();
  return index;
}
}  // namespace

static ThreadPool* GetCurrentThreadPool() {