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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
// Copyright 2022 The Pigweed 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
//
// https://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.
#include <cstring>
#include "pw_bloat/bloat_this_binary.h"
#include "pw_bytes/span.h"
#include "pw_checksum/crc32.h"
#include "pw_hdlc/decoder.h"
#include "pw_hdlc/encoder.h"
#include "pw_log/log.h"
#include "pw_preprocessor/compiler.h"
#include "pw_result/result.h"
#include "pw_span/span.h"
#include "pw_stream/memory_stream.h"
#include "pw_varint/varint.h"
namespace pw::size_report {
PW_NO_INLINE
Result<int> ForceResultInBloat() { return 43; }
std::byte buffer[128];
std::byte* volatile get_buffer = buffer;
volatile unsigned get_size;
PW_NO_INLINE
ByteSpan GetBufferSpan() {
if (ForceResultInBloat().ok()) {
PW_LOG_INFO("Got result!");
}
// Trick the optimizer and also satisfy the type checker.
get_size = sizeof(buffer);
std::byte* local_buffer = get_buffer;
unsigned local_size = get_size;
return span(local_buffer, local_size);
}
#ifdef ENABLE_CRC
PW_NO_INLINE
unsigned RunChecksum() {
// Trigger varint
varint::Encode(55, GetBufferSpan());
uint64_t decoded_number;
size_t num_bytes = varint::Decode(GetBufferSpan(), &decoded_number);
// Calculate the checksum and stash it in a volatile variable so the compiler
// can't optimize it out.
::pw::checksum::Crc32 checksum;
checksum.Update(GetBufferSpan());
uint32_t value = static_cast<uint32_t>(checksum.value());
value += num_bytes + static_cast<uint32_t>(decoded_number);
*get_buffer = static_cast<std::byte>(value);
return 0;
}
#endif
PW_NO_INLINE
void HdlcSizeReport() {
// Create a buffer with some data to bloat the binary with stream and related.
std::array<std::byte, 100> data;
std::fill(data.begin(), data.end(), std::byte(0));
stream::MemoryWriterBuffer<250> destination;
destination.Write(data);
if (destination.Write(GetBufferSpan()).ok()) {
PW_LOG_INFO("Wrote successfully");
}
#ifdef ENABLE_CRC
RunChecksum();
#endif
#ifdef ENABLE_ENCODE
hdlc::WriteUIFrame(123, data, destination);
#endif
#ifdef ENABLE_DECODE
hdlc::Decoder decoder(data);
Result<hdlc::Frame> frame = decoder.Process(std::byte('~'));
// Force use of nodiscard frame.
if (frame.ok()) {
get_size++;
}
decoder.Clear();
#endif
}
} // namespace pw::size_report
int main() {
pw::bloat::BloatThisBinary();
pw::size_report::HdlcSizeReport();
return 0;
}
|
