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
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MOJO_CORE_IPCZ_DRIVER_TRANSMISSIBLE_PLATFORM_HANDLE_H_
#define MOJO_CORE_IPCZ_DRIVER_TRANSMISSIBLE_PLATFORM_HANDLE_H_
#include <utility>
#include "mojo/core/ipcz_driver/object.h"
#include "mojo/core/system_impl_export.h"
#include "mojo/public/cpp/platform/platform_handle.h"
namespace mojo::core::ipcz_driver {
// Driver object to hold a PlatformHandle which the platform's Channel
// implementation can transmit as-is, out-of-band from message data.
//
// TransmissiblePlatformHandle is the only type of driver object that can be
// emitted by the driver's Serialize(), and it's the only kind accepted by its
// Transmit().
//
// Note that this is never used on Windows, where handles are inlined as message
// data during serialization.
class MOJO_SYSTEM_IMPL_EXPORT TransmissiblePlatformHandle
: public Object<TransmissiblePlatformHandle> {
public:
TransmissiblePlatformHandle();
explicit TransmissiblePlatformHandle(PlatformHandle handle);
PlatformHandle& handle() { return handle_; }
PlatformHandle TakeHandle() { return std::move(handle_); }
static constexpr Type object_type() { return kTransmissiblePlatformHandle; }
// Object:
void Close() override;
bool IsSerializable() const override;
bool GetSerializedDimensions(Transport& transmitter,
size_t& num_bytes,
size_t& num_handles) override;
bool Serialize(Transport& transmitter,
base::span<uint8_t> data,
base::span<PlatformHandle> handles) override;
static scoped_refptr<TransmissiblePlatformHandle> Deserialize(
base::span<const uint8_t> data,
base::span<PlatformHandle> handles);
private:
~TransmissiblePlatformHandle() override;
PlatformHandle handle_;
};
} // namespace mojo::core::ipcz_driver
#endif // MOJO_CORE_IPCZ_DRIVER_TRANSMISSIBLE_PLATFORM_HANDLE_H_
|
