experiments/STT-tensorflow
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[RandomAccessInputStream] Use tstring::resize_uninitialized() in ReadNBytes().

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This avoids unnecessarily `memset`ting the bytes that are about to be overwritten.

PiperOrigin-RevId: 293855502
Change-Id: Ibad17f55e160b79137564a23ca8beb2c2eafab0b
This commit is contained in:
Derek Murray 2020-02-07 11:22:00 -08:00 committed by TensorFlower Gardener
parent 2761aba394
commit 851a0b6651
1 changed files with 1 additions and 1 deletions

2
tensorflow/core/lib/io/random_inputstream.cc
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@ -35,7 +35,7 @@ Status RandomAccessInputStream::ReadNBytes(int64 bytes_to_read,
return errors::InvalidArgument("Cannot read negative number of bytes"); return errors::InvalidArgument("Cannot read negative number of bytes");
} }
result->clear(); result->clear();
result->resize(bytes_to_read); result->resize_uninitialized(bytes_to_read);
char* result_buffer = &(*result)[0]; char* result_buffer = &(*result)[0];
StringPiece data; StringPiece data;
Status s = file_->Read(pos_, bytes_to_read, &data, result_buffer); Status s = file_->Read(pos_, bytes_to_read, &data, result_buffer);