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authorGravatar yang-g <yangg@google.com>2015-08-21 15:35:03 -0700
committerGravatar yang-g <yangg@google.com>2015-08-21 15:35:03 -0700
commit9e2f90cd068b4c2a8fdec69ca93ca614d35cba28 (patch)
tree4a4011b82112cd20767f3c2e47ae322645331232 /include/grpc++/support/byte_buffer.h
parentd392fa04c5866387c981f4cd83392d1a2e3da7a8 (diff)
headers reorg
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+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPCXX_SUPPORT_BYTE_BUFFER_H
+#define GRPCXX_SUPPORT_BYTE_BUFFER_H
+
+#include <grpc/grpc.h>
+#include <grpc/byte_buffer.h>
+#include <grpc/support/log.h>
+#include <grpc++/impl/serialization_traits.h>
+#include <grpc++/support/config.h>
+#include <grpc++/support/slice.h>
+#include <grpc++/support/status.h>
+
+#include <vector>
+
+namespace grpc {
+
+class ByteBuffer GRPC_FINAL {
+ public:
+ ByteBuffer() : buffer_(nullptr) {}
+
+ ByteBuffer(const Slice* slices, size_t nslices);
+
+ ~ByteBuffer() {
+ if (buffer_) {
+ grpc_byte_buffer_destroy(buffer_);
+ }
+ }
+
+ void Dump(std::vector<Slice>* slices) const;
+
+ void Clear();
+ size_t Length() const;
+
+ private:
+ friend class SerializationTraits<ByteBuffer, void>;
+
+ ByteBuffer(const ByteBuffer&);
+ ByteBuffer& operator=(const ByteBuffer&);
+
+ // takes ownership
+ void set_buffer(grpc_byte_buffer* buf) {
+ if (buffer_) {
+ gpr_log(GPR_ERROR, "Overriding existing buffer");
+ Clear();
+ }
+ buffer_ = buf;
+ }
+
+ grpc_byte_buffer* buffer() const { return buffer_; }
+
+ grpc_byte_buffer* buffer_;
+};
+
+template <>
+class SerializationTraits<ByteBuffer, void> {
+ public:
+ static Status Deserialize(grpc_byte_buffer* byte_buffer, ByteBuffer* dest,
+ int max_message_size) {
+ dest->set_buffer(byte_buffer);
+ return Status::OK;
+ }
+ static Status Serialize(const ByteBuffer& source, grpc_byte_buffer** buffer,
+ bool* own_buffer) {
+ *buffer = source.buffer();
+ *own_buffer = false;
+ return Status::OK;
+ }
+};
+
+} // namespace grpc
+
+#endif // GRPCXX_SUPPORT_BYTE_BUFFER_H