1 /*
2 * Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <cinttypes>
17 #include <unistd.h>
18 #include "logging.h"
19 #include "share_memory_allocator.h"
20 #include "stack_writer.h"
21
StackWriter(std::string name, uint32_t size, int smbFd, int eventFd, bool blocked)22 StackWriter::StackWriter(std::string name,
23 uint32_t size,
24 int smbFd,
25 int eventFd,
26 bool blocked)
27 : pluginName_(name), blocked_(blocked)
28 {
29 shareMemoryBlock_ = ShareMemoryAllocator::GetInstance().CreateMemoryBlockRemote(name, size, smbFd);
30 if (shareMemoryBlock_ == nullptr) {
31 }
32 eventNotifier_ = EventNotifier::CreateWithFd(eventFd);
33 lastFlushTime_ = std::chrono::steady_clock::now();
34 }
35
~StackWriter()36 StackWriter::~StackWriter()
37 {
38 eventNotifier_ = nullptr;
39 ShareMemoryAllocator::GetInstance().ReleaseMemoryBlockRemote(pluginName_);
40 shareMemoryBlock_ = nullptr;
41 }
42
Report() const43 void StackWriter::Report() const
44 {
45 }
46
DoStats(long bytes)47 void StackWriter::DoStats(long bytes)
48 {
49 ++writeCount_;
50 bytesCount_ += bytes;
51 bytesPending_ += bytes;
52 }
53
Write(const void* data, size_t size)54 long StackWriter::Write(const void* data, size_t size)
55 {
56 if (shareMemoryBlock_ == nullptr || data == nullptr || size == 0) {
57 return false;
58 }
59 return shareMemoryBlock_->PutRaw(reinterpret_cast<const int8_t*>(data), size);
60 }
61
WriteTimeout(const void* data, size_t size)62 long StackWriter::WriteTimeout(const void* data, size_t size)
63 {
64 if (shareMemoryBlock_ == nullptr || data == nullptr || size == 0) {
65 return false;
66 }
67 return shareMemoryBlock_->PutRawTimeout(reinterpret_cast<const int8_t*>(data), size);
68 }
69
WriteWithPayloadTimeout(const void* data, size_t size, const void* payload, size_t payloadSize, const std::function<bool()>& callback)70 long StackWriter::WriteWithPayloadTimeout(const void* data, size_t size, const void* payload, size_t payloadSize,
71 const std::function<bool()>& callback)
72 {
73 if (shareMemoryBlock_ == nullptr || data == nullptr || size == 0) {
74 return false;
75 }
76 if (blocked_) {
77 return shareMemoryBlock_->PutWithPayloadSync(
78 reinterpret_cast<const int8_t*>(data),
79 size,
80 reinterpret_cast<const int8_t*>(payload),
81 payloadSize,
82 callback);
83 } else {
84 return shareMemoryBlock_->PutWithPayloadTimeout(
85 reinterpret_cast<const int8_t*>(data), size, reinterpret_cast<const int8_t*>(payload), payloadSize);
86 }
87 }
88
Flush()89 bool StackWriter::Flush()
90 {
91 ++flushCount_;
92 eventNotifier_->Post(flushCount_.load());
93 lastFlushTime_ = std::chrono::steady_clock::now();
94 bytesPending_ = 0;
95 return true;
96 }
97