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 namespace {
22 const int WAIT_TIMEOUT_SA = 3000000;
23 }
StackWriter(std::string name,uint32_t size,int smbFd,int eventFd,bool blocked,bool isSaMode)24 StackWriter::StackWriter(std::string name,
25 uint32_t size,
26 int smbFd,
27 int eventFd,
28 bool blocked,
29 bool isSaMode)
30 : pluginName_(name), blocked_(blocked)
31 {
32 shareMemoryBlock_ = ShareMemoryAllocator::GetInstance().CreateMemoryBlockRemote(name, size, smbFd);
33 if (isSaMode && shareMemoryBlock_ != nullptr) {
34 shareMemoryBlock_->SetWaitTime(WAIT_TIMEOUT_SA);
35 }
36 eventNotifier_ = EventNotifier::CreateWithFd(eventFd);
37 lastFlushTime_ = std::chrono::steady_clock::now();
38 }
39
~StackWriter()40 StackWriter::~StackWriter()
41 {
42 eventNotifier_ = nullptr;
43 ShareMemoryAllocator::GetInstance().ReleaseMemoryBlockRemote(pluginName_);
44 shareMemoryBlock_ = nullptr;
45 }
46
Report() const47 void StackWriter::Report() const
48 {
49 }
50
DoStats(long bytes)51 void StackWriter::DoStats(long bytes)
52 {
53 ++writeCount_;
54 bytesCount_ += bytes;
55 bytesPending_ += bytes;
56 }
57
Write(const void * data,size_t size)58 long StackWriter::Write(const void* data, size_t size)
59 {
60 if (shareMemoryBlock_ == nullptr || data == nullptr || size == 0) {
61 return false;
62 }
63 return shareMemoryBlock_->PutRaw(reinterpret_cast<const int8_t*>(data), size);
64 }
65
WriteTimeout(const void * data,size_t size)66 long StackWriter::WriteTimeout(const void* data, size_t size)
67 {
68 if (shareMemoryBlock_ == nullptr || data == nullptr || size == 0) {
69 return false;
70 }
71 return shareMemoryBlock_->PutRawTimeout(reinterpret_cast<const int8_t*>(data), size);
72 }
73
WriteWithPayloadTimeout(const void * data,size_t size,const void * payload,size_t payloadSize,const std::function<bool ()> & callback)74 long StackWriter::WriteWithPayloadTimeout(const void* data, size_t size, const void* payload, size_t payloadSize,
75 const std::function<bool()>& callback)
76 {
77 if (shareMemoryBlock_ == nullptr || data == nullptr || size == 0) {
78 return false;
79 }
80 if (blocked_) {
81 return shareMemoryBlock_->PutWithPayloadSync(
82 reinterpret_cast<const int8_t*>(data),
83 size,
84 reinterpret_cast<const int8_t*>(payload),
85 payloadSize,
86 callback);
87 } else {
88 return shareMemoryBlock_->PutWithPayloadTimeout(
89 reinterpret_cast<const int8_t*>(data), size, reinterpret_cast<const int8_t*>(payload), payloadSize);
90 }
91 }
92
Flush()93 bool StackWriter::Flush()
94 {
95 ++flushCount_;
96 eventNotifier_->Post(flushCount_.load());
97 lastFlushTime_ = std::chrono::steady_clock::now();
98 bytesPending_ = 0;
99 return true;
100 }
101