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
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* Copyright (C) 2020 The Android Open Source Project
*
* 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.
*/
#pragma once
namespace android {
#pragma clang diagnostic push
#pragma clang diagnostic error "-Wpadded"
enum : uint32_t {
/**
* follows is RpcWireTransaction, if flags != oneway, reply w/ RPC_COMMAND_REPLY expected
*/
RPC_COMMAND_TRANSACT = 0,
/**
* follows is RpcWireReply
*/
RPC_COMMAND_REPLY,
/**
* follows is RpcWireAddress
*
* note - this in the protocol directly instead of as a 'special
* transaction' in order to keep it as lightweight as possible (we don't
* want to create a 'Parcel' object for every decref)
*/
RPC_COMMAND_DEC_STRONG,
};
/**
* These commands are used when the address in an RpcWireTransaction is zero'd
* out (no address). This allows the transact/reply flow to be used for
* additional server commands, without making the protocol for
* transactions/replies more complicated.
*/
enum : uint32_t {
RPC_SPECIAL_TRANSACT_GET_ROOT = 0,
RPC_SPECIAL_TRANSACT_GET_MAX_THREADS = 1,
RPC_SPECIAL_TRANSACT_GET_SESSION_ID = 2,
};
constexpr int32_t RPC_SESSION_ID_NEW = -1;
// serialization is like:
// |RpcWireHeader|struct desginated by 'command'| (over and over again)
struct RpcWireHeader {
uint32_t command; // RPC_COMMAND_*
uint32_t bodySize;
uint32_t reserved[2];
};
struct RpcWireAddress {
uint8_t address[32];
};
struct RpcWireTransaction {
RpcWireAddress address;
uint32_t code;
uint32_t flags;
uint64_t asyncNumber;
uint32_t reserved[4];
uint8_t data[0];
};
struct RpcWireReply {
int32_t status; // transact return
uint8_t data[0];
};
#pragma clang diagnostic pop
} // namespace android
|
