diff options
Diffstat (limited to 'src/google/protobuf/io/zero_copy_stream.h')
| -rw-r--r-- | src/google/protobuf/io/zero_copy_stream.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/google/protobuf/io/zero_copy_stream.h b/src/google/protobuf/io/zero_copy_stream.h index db5326f..52650fc 100644 --- a/src/google/protobuf/io/zero_copy_stream.h +++ b/src/google/protobuf/io/zero_copy_stream.h @@ -1,6 +1,6 @@ // Protocol Buffers - Google's data interchange format // Copyright 2008 Google Inc. All rights reserved. -// http://code.google.com/p/protobuf/ +// https://developers.google.com/protocol-buffers/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are @@ -226,6 +226,16 @@ class LIBPROTOBUF_EXPORT ZeroCopyOutputStream { // Returns the total number of bytes written since this object was created. virtual int64 ByteCount() const = 0; + // Write a given chunk of data to the output. Some output streams may + // implement this in a way that avoids copying. Check AllowsAliasing() before + // calling WriteAliasedRaw(). It will GOOGLE_CHECK fail if WriteAliasedRaw() is + // called on a stream that does not allow aliasing. + // + // NOTE: It is caller's responsibility to ensure that the chunk of memory + // remains live until all of the data has been consumed from the stream. + virtual bool WriteAliasedRaw(const void* data, int size); + virtual bool AllowsAliasing() const { return false; } + private: GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ZeroCopyOutputStream); |