third_party/grpc/src/cpp/server/create_default_thread_pool.cc

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#include <grpc/support/cpu.h>

#include "src/cpp/server/dynamic_thread_pool.h"

#ifndef GRPC_CUSTOM_DEFAULT_THREAD_POOL

namespace grpc {

ThreadPoolInterface* CreateDefaultThreadPool() {
  int cores = gpr_cpu_num_cores();
  if (!cores) cores = 4;
  return new DynamicThreadPool(cores);
}

}  // namespace grpc

#endif  // !GRPC_CUSTOM_DEFAULT_THREAD_POOL