logging_is_google_glog.h

#ifndef C10_UTIL_LOGGING_IS_GOOGLE_GLOG_H_
#define C10_UTIL_LOGGING_IS_GOOGLE_GLOG_H_

#include <map>
#include <set>
#include <vector>

#include <iomanip> // because some of the caffe2 code uses e.g. std::setw
// Using google glog. For glog 0.3.2 versions, stl_logging.h needs to be before
// logging.h to actually use stl_logging. Because template magic.
// In addition, we do not do stl logging in .cu files because nvcc does not like
// it. Some mobile platforms do not like stl_logging, so we add an
// overload in that case as well.

#ifdef __CUDACC__
#include <cuda.h>
#endif

#if !defined(__CUDACC__) && !defined(C10_USE_MINIMAL_GLOG)
#include <glog/stl_logging.h>

// Old versions of glog don't declare this using declaration, so help
// them out.  Fortunately, C++ won't complain if you declare the same
// using declaration multiple times.
namespace std {
using ::operator<<;
}

#else // !defined(__CUDACC__) && !defined(C10_USE_MINIMAL_GLOG)

// In the cudacc compiler scenario, we will simply ignore the container
// printout feature. Basically we need to register a fake overload for
// vector/string - here, we just ignore the entries in the logs.

namespace std {
#define INSTANTIATE_FOR_CONTAINER(container)                      \
  template <class... Types>                                       \
  ostream& operator<<(ostream& out, const container<Types...>&) { \
    return out;                                                   \
  }

INSTANTIATE_FOR_CONTAINER(vector)
INSTANTIATE_FOR_CONTAINER(map)
INSTANTIATE_FOR_CONTAINER(set)
#undef INSTANTIATE_FOR_CONTAINER
} // namespace std

#endif

#include <glog/logging.h>

#endif // C10_UTIL_LOGGING_IS_GOOGLE_GLOG_H_