blob: db5cf942a0c9e64655b3570ad5722178425043f2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_SLICE_H
#define GRPCXX_SUPPORT_SLICE_H
#include <grpc++/support/config.h>
#include <grpc/slice.h>
namespace grpc {
/// A wrapper around \a grpc_slice.
///
/// A slice represents a contiguous reference counted array of bytes.
/// It is cheap to take references to a slice, and it is cheap to create a
/// slice pointing to a subset of another slice.
class Slice final {
public:
/// Construct an empty slice.
Slice();
/// Destructor - drops one reference.
~Slice();
enum AddRef { ADD_REF };
/// Construct a slice from \a slice, adding a reference.
Slice(grpc_slice slice, AddRef);
enum StealRef { STEAL_REF };
/// Construct a slice from \a slice, stealing a reference.
Slice(grpc_slice slice, StealRef);
/// Copy constructor, adds a reference.
Slice(const Slice& other);
/// Assignment, reference count is unchanged.
Slice& operator=(Slice other) {
std::swap(slice_, other.slice_);
return *this;
}
/// Byte size.
size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
/// Raw pointer to the beginning (first element) of the slice.
const uint8_t* begin() const { return GRPC_SLICE_START_PTR(slice_); }
/// Raw pointer to the end (one byte \em past the last element) of the slice.
const uint8_t* end() const { return GRPC_SLICE_END_PTR(slice_); }
/// Raw C slice. Caller needs to call grpc_slice_unref when done.
grpc_slice c_slice() const { return grpc_slice_ref(slice_); }
private:
friend class ByteBuffer;
grpc_slice slice_;
};
} // namespace grpc
#endif // GRPCXX_SUPPORT_SLICE_H
|
