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// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// http://code.google.com/p/protobuf/
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Author: kenton@google.com (Kenton Varda)
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// Based on original Protocol Buffers design by
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// Sanjay Ghemawat, Jeff Dean, and others.
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// This file exists solely to document the google::protobuf namespace.
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// It is not compiled into anything, but it may be read by an automated
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// documentation generator.
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// Core components of the Protocol Buffers runtime library.
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// The files in this package represent the core of the Protocol Buffer
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// system. All of them are part of the libprotobuf library.
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// A note on thread-safety:
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// Thread-safety in the Protocol Buffer library follows a simple rule:
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// unless explicitly noted otherwise, it is always safe to use an object
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// from multiple threads simultaneously as long as the object is declared
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// const in all threads (or, it is only used in ways that would be allowed
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// if it were declared const). However, if an object is accessed in one
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// thread in a way that would not be allowed if it were const, then it is
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// not safe to access that object in any other thread simultaneously.
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// Put simply, read-only access to an object can happen in multiple threads
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// simultaneously, but write access can only happen in a single thread at
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// The implementation does contain some "const" methods which actually modify
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// the object behind the scenes -- e.g., to cache results -- but in these cases
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// mutex locking is used to make the access thread-safe.
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src/google/protobuf/package_info.h
