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
22StackWriter::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
36StackWriter::~StackWriter()
37{
38    eventNotifier_ = nullptr;
39    ShareMemoryAllocator::GetInstance().ReleaseMemoryBlockRemote(pluginName_);
40    shareMemoryBlock_ = nullptr;
41}
42
43void StackWriter::Report() const
44{
45}
46
47void StackWriter::DoStats(long bytes)
48{
49    ++writeCount_;
50    bytesCount_ += bytes;
51    bytesPending_ += bytes;
52}
53
54long 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
62long 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
70long 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
89bool 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