1 /*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
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 #include "uv_queue.h"
16 #include <mutex>
17 #include "logger.h"
18
19 namespace OHOS::ObjectStore {
UvQueue(napi_env env)20 UvQueue::UvQueue(napi_env env) : env_(env)
21 {
22 napi_get_uv_event_loop(env, &loop_);
23 }
24
~UvQueue()25 UvQueue::~UvQueue()
26 {
27 LOG_DEBUG("no memory leak for queue-callback");
28 }
29
ExecUvWork(uv_work_t * work,int uvstatus)30 void UvQueue::ExecUvWork(uv_work_t *work, int uvstatus)
31 {
32 UvEntry *entry = static_cast<UvEntry *>(work->data);
33 auto queue = entry->uvQueue_.lock();
34 if (queue != nullptr) {
35 std::unique_lock<std::shared_mutex> cacheLock(queue->mutex_);
36 for (auto &item : queue->args_) {
37 item.first(queue->env_, item.second);
38 }
39 queue->args_.clear();
40 }
41 delete entry;
42 work->data = nullptr;
43 delete work;
44 work = nullptr;
45 }
46
CallFunction(Process process,void * argv)47 void UvQueue::CallFunction(Process process, void *argv)
48 {
49 if (process == nullptr || argv == nullptr) {
50 LOG_ERROR("nullptr");
51 return;
52 }
53 uv_work_t *work = new (std::nothrow) uv_work_t;
54 if (work == nullptr) {
55 LOG_ERROR("no memory for uv_work_t");
56 return;
57 }
58 work->data = new (std::nothrow)UvEntry { weak_from_this() };
59 if (work->data == nullptr) {
60 delete work;
61 LOG_ERROR("no memory for UvEntry");
62 return;
63 }
64 {
65 std::unique_lock<std::shared_mutex> cacheLock(mutex_);
66 if (args_.count(process) != 0) {
67 std::list<void *> newData = args_.at(process);
68 newData.push_back(argv);
69 args_.insert_or_assign(process, newData);
70 } else {
71 std::list<void *> data;
72 data.push_back(argv);
73 args_.insert_or_assign(process, data);
74 }
75 }
76
77 int ret = uv_queue_work(
78 loop_, work, [](uv_work_t *work) {}, UvQueue::ExecUvWork);
79 if (ret != 0) {
80 if (work->data != nullptr) {
81 UvEntry *uvEntry = static_cast<UvEntry *>(work->data);
82 delete uvEntry;
83 uvEntry = nullptr;
84 }
85 if (work != nullptr) {
86 delete work;
87 work = nullptr;
88 }
89 }
90 }
91 } // namespace OHOS::ObjectStore
92