blob: c4e9232d15fefa899fd71ef89a6aaca4c8b7ce77 (
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
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
|
// Copyright 2021 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 "pw_bloat/bloat_this_binary.h"
#include "pw_ring_buffer/prefixed_entry_ring_buffer.h"
#include "pw_status/status.h"
constexpr size_t kRingBufferSize = 1024;
constexpr size_t kReaderCount = 4;
constexpr std::byte kValue = (std::byte)0xFF;
constexpr std::byte kData[1] = {kValue};
int main() {
pw::bloat::BloatThisBinary();
pw::ring_buffer::PrefixedEntryRingBufferMulti ring(true /* user_preamble */);
std::byte buffer[kRingBufferSize];
pw::Status status = ring.SetBuffer(buffer);
if (!status.ok()) {
return 1;
}
// Attach readers.
pw::ring_buffer::PrefixedEntryRingBufferMulti::Reader readers[kReaderCount];
for (auto& reader : readers) {
ring.AttachReader(reader)
.IgnoreError(); // TODO(b/242598609): Handle Status properly
}
// Push entries until the buffer is full.
size_t total_entries = 0;
while (true) {
status = ring.TryPushBack(kData);
if (status == pw::Status::ResourceExhausted()) {
break;
} else if (!status.ok()) {
return 2;
}
total_entries++;
}
// Forcefully push an entry.
status = ring.PushBack(kData);
if (!status.ok()) {
return 3;
}
// Dering the buffer.
status = ring.Dering();
if (!status.ok()) {
return 4;
}
// Peek and pop all entries.
__attribute__((unused)) std::byte value[1];
__attribute__((unused)) size_t value_size;
for (size_t i = 0; i < total_entries; ++i) {
for (auto& reader : readers) {
status = reader.PeekFront(value, &value_size);
if (!status.ok()) {
return 5;
}
status = reader.PeekFrontWithPreamble(value, &value_size);
if (!status.ok()) {
return 6;
}
if (reader.FrontEntryDataSizeBytes() == 0) {
return 7;
}
if (reader.FrontEntryTotalSizeBytes() == 0) {
return 8;
}
if (reader.EntryCount() == 0) {
return 9;
}
status = reader.PopFront();
if (!status.ok()) {
return 10;
}
}
}
for (auto& reader : readers) {
ring.DetachReader(reader)
.IgnoreError(); // TODO(b/242598609): Handle Status properly
}
ring.Clear();
return 0;
}
|
