1 /*
2 * Copyright (c) 2024-2024 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
16 #include "camera_napi_worker_queue_keeper.h"
17
18 #include <algorithm>
19 #include <chrono>
20 #include <condition_variable>
21 #include <cstdint>
22 #include <memory>
23 #include <mutex>
24 #include <new>
25
26 #include "camera_log.h"
27 #include "camera_napi_const.h"
28 #include "camera_napi_utils.h"
29 namespace OHOS {
30 namespace CameraStandard {
31 constexpr uint64_t WORKER_TIMEOUT = 2000L;
32 constexpr int32_t WORKER_TASK_WAIT_COUNT_MAX = 1;
33 static std::mutex g_WorkerQueueKeeperMutex;
34 static std::shared_ptr<CameraNapiWorkerQueueKeeper> g_WorkerQueueKeeper = nullptr;
35
WorkerQueueTasksResetCreateTimeNoLock(NapiWorkerQueueTaskTimePoint timePoint)36 void CameraNapiWorkerQueueKeeper::WorkerQueueTasksResetCreateTimeNoLock(NapiWorkerQueueTaskTimePoint timePoint)
37 {
38 for (auto& task : workerQueueTasks_) {
39 task->createTimePoint = timePoint;
40 task->waitCount = 0;
41 }
42 }
43
GetInstance()44 std::shared_ptr<CameraNapiWorkerQueueKeeper> CameraNapiWorkerQueueKeeper::GetInstance()
45 {
46 if (g_WorkerQueueKeeper != nullptr) {
47 return g_WorkerQueueKeeper;
48 }
49 std::lock_guard<std::mutex> lock(g_WorkerQueueKeeperMutex);
50 if (g_WorkerQueueKeeper != nullptr) {
51 return g_WorkerQueueKeeper;
52 }
53
54 g_WorkerQueueKeeper = std::make_shared<CameraNapiWorkerQueueKeeper>();
55 return g_WorkerQueueKeeper;
56 }
57
AcquireWorkerQueueTask(const std::string & taskName)58 std::shared_ptr<NapiWorkerQueueTask> CameraNapiWorkerQueueKeeper::AcquireWorkerQueueTask(const std::string& taskName)
59 {
60 auto queueTask = std::make_shared<NapiWorkerQueueTask>(taskName);
61 std::lock_guard<std::mutex> lock(workerQueueTaskMutex_);
62 workerQueueTasks_.push_back(queueTask);
63 return queueTask;
64 }
65
WorkerLockCondition(std::shared_ptr<NapiWorkerQueueTask> queueTask,bool & isError)66 bool CameraNapiWorkerQueueKeeper::WorkerLockCondition(std::shared_ptr<NapiWorkerQueueTask> queueTask, bool& isError)
67 {
68 std::lock_guard<std::mutex> lock(workerQueueTaskMutex_);
69 if (std::find(workerQueueTasks_.begin(), workerQueueTasks_.end(), queueTask) == workerQueueTasks_.end()) {
70 MEDIA_ERR_LOG("CameraNapiWorkerQueueKeeper::WorkerLockCondition current task %{public}s not in queue",
71 queueTask->taskName.c_str());
72 isError = true;
73 return true;
74 }
75 auto firstTask = workerQueueTasks_.front();
76 if (firstTask == queueTask) {
77 return true;
78 }
79 if (firstTask->queueStatus == RUNNING) {
80 return false;
81 }
82 auto now = std::chrono::steady_clock::now();
83 auto diffTime = std::chrono::duration_cast<std::chrono::milliseconds>(now - firstTask->createTimePoint);
84 if (diffTime < std::chrono::milliseconds(WORKER_TIMEOUT)) {
85 return false;
86 }
87 if (queueTask->waitCount < WORKER_TASK_WAIT_COUNT_MAX) {
88 queueTask->waitCount++;
89 return false;
90 }
91 MEDIA_ERR_LOG("CameraNapiWorkerQueueKeeper::WorkerLockCondition current task %{public}s wait queue task %{public}s "
92 "timeout, waitTime:%{public}lld",
93 queueTask->taskName.c_str(), firstTask->taskName.c_str(), diffTime.count());
94 workerQueueTasks_.pop_front();
95 auto frontTask = workerQueueTasks_.front();
96 if (frontTask == queueTask) {
97 return true;
98 }
99 MEDIA_INFO_LOG("CameraNapiWorkerQueueKeeper::WorkerLockCondition current task not equal front task,%{public}s "
100 "vs %{public}s, continue wait.",
101 queueTask->taskName.c_str(), frontTask->taskName.c_str());
102 WorkerQueueTasksResetCreateTimeNoLock(now);
103 workerCond_.notify_all();
104 return false;
105 }
106
ConsumeWorkerQueueTask(std::shared_ptr<NapiWorkerQueueTask> queueTask,std::function<void (void)> func)107 bool CameraNapiWorkerQueueKeeper::ConsumeWorkerQueueTask(
108 std::shared_ptr<NapiWorkerQueueTask> queueTask, std::function<void(void)> func)
109 {
110 if (queueTask == nullptr) {
111 return false;
112 }
113 std::unique_lock<std::mutex> lock(workerQueueMutex_);
114 {
115 std::lock_guard<std::mutex> lock(workerQueueTaskMutex_);
116 CHECK_ERROR_RETURN_RET(workerQueueTasks_.empty(), false);
117 CHECK_ERROR_RETURN_RET(
118 std::find(workerQueueTasks_.begin(), workerQueueTasks_.end(), queueTask) == workerQueueTasks_.end(), false);
119 }
120 bool isMatchCondition = false;
121 bool isError = false;
122 while (!isMatchCondition) {
123 isMatchCondition = workerCond_.wait_for(lock, std::chrono::milliseconds(WORKER_TIMEOUT),
124 [this, &queueTask, &isError]() { return WorkerLockCondition(queueTask, isError); });
125 }
126 if (isError) {
127 MEDIA_ERR_LOG("CameraNapiWorkerQueueKeeper::ConsumeWorkerQueueTask wait task %{public}s occur error",
128 queueTask->taskName.c_str());
129 workerCond_.notify_all();
130 return false;
131 }
132 queueTask->queueStatus = RUNNING;
133 func();
134 queueTask->queueStatus = DONE;
135 {
136 auto now = std::chrono::steady_clock::now();
137 std::lock_guard<std::mutex> lock(workerQueueTaskMutex_);
138 workerQueueTasks_.pop_front();
139 WorkerQueueTasksResetCreateTimeNoLock(now);
140 }
141
142 workerCond_.notify_all();
143 return true;
144 }
145 } // namespace CameraStandard
146 } // namespace OHOS