1 /*
2 * Copyright (c) 2022 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 "memory_level_manager.h"
16 #include "memmgr_log.h"
17 #include "memmgr_ptr_util.h"
18 #include "app_mem_info.h"
19 #include "app_mgr_client.h"
20 #include "kernel_interface.h"
21 #include "reclaim_priority_manager.h"
22 #include "memmgr_config_manager.h"
23
24 namespace OHOS {
25 namespace Memory {
26 namespace {
27 const std::string TAG = "MemoryLevelManager";
28 }
29
30 IMPLEMENT_SINGLE_INSTANCE(MemoryLevelManager);
31
MemoryLevelManager()32 MemoryLevelManager::MemoryLevelManager()
33 {
34 initialized_ = GetEventHandler();
35 if (initialized_) {
36 HILOGI("init succeeded");
37 } else {
38 HILOGE("init failed");
39 }
40 }
41
GetEventHandler()42 bool MemoryLevelManager::GetEventHandler()
43 {
44 if (!handler_) {
45 MAKE_POINTER(handler_, shared, AppExecFwk::EventHandler, "failed to create event handler", return false,
46 AppExecFwk::EventRunner::Create());
47 }
48 return true;
49 }
50
CalcSystemMemoryLevel(SystemMemoryLevel & level)51 bool MemoryLevelManager::CalcSystemMemoryLevel(SystemMemoryLevel &level)
52 {
53 int currentBuffer = KernelInterface::GetInstance().GetCurrentBuffer();
54 std::shared_ptr<SystemMemoryLevelConfig> config =
55 std::make_shared<SystemMemoryLevelConfig>(MemmgrConfigManager::GetInstance().GetSystemMemoryLevelConfig());
56 if (config == nullptr) {
57 HILOGE("The SystemMemoryLevelConfig is NULL.");
58 return false;
59 }
60
61 if (currentBuffer <= config->GetCritical()) {
62 level = SystemMemoryLevel::MEMORY_LEVEL_CRITICAL;
63 } else if (currentBuffer <= config->GetLow()) {
64 level = SystemMemoryLevel::MEMORY_LEVEL_LOW;
65 } else if (currentBuffer <= config->GetModerate()) {
66 level = SystemMemoryLevel::MEMORY_LEVEL_MODERATE;
67 } else {
68 return false;
69 }
70
71 HILOGI("critical:%{public}d low:%{public}d moderate:%{public}d in config, curBuf:%{public}dKB, level:%{public}d.",
72 config->GetCritical(), config->GetLow(), config->GetModerate(), currentBuffer, static_cast<int>(level));
73 return true;
74 }
75
CalcReclaimAppList(std::vector<std::shared_ptr<AppEntity>> & appList)76 bool MemoryLevelManager::CalcReclaimAppList(std::vector<std::shared_ptr<AppEntity>> &appList)
77 {
78 ReclaimPriorityManager::BunldeCopySet bundleSet;
79 ReclaimPriorityManager::GetInstance().GetBundlePrioSet(bundleSet);
80 for (auto bundleInfo : bundleSet) {
81 std::shared_ptr<AppEntity> app;
82 MAKE_POINTER(app, shared, AppEntity, "make shared failed", return false, bundleInfo.uid_, bundleInfo.name_);
83 appList.push_back(app);
84 HILOGI("The app will be reclaimed, uid:%{public}d, name:%{public}s.", app->uid_, app->name_.c_str());
85 }
86 return true;
87 }
88
PsiHandlerInner()89 void MemoryLevelManager::PsiHandlerInner()
90 {
91 HILOGD("[%{public}ld] called", ++calledCount_);
92
93 /* Calculate the system memory level */
94 SystemMemoryLevel level;
95 if (!CalcSystemMemoryLevel(level)) {
96 return;
97 }
98
99 DECLARE_UNIQUE_POINTER(AppExecFwk::AppMgrClient, appMgrClient_);
100 MAKE_POINTER(appMgrClient_, unique, AppExecFwk::AppMgrClient, "make unique failed", return,
101 /* no param */);
102 switch (level) {
103 case SystemMemoryLevel::MEMORY_LEVEL_MODERATE:
104 appMgrClient_->NotifyMemoryLevel(AppExecFwk::MemoryLevel::MEMORY_LEVEL_MODERATE);
105 break;
106 case SystemMemoryLevel::MEMORY_LEVEL_LOW:
107 appMgrClient_->NotifyMemoryLevel(AppExecFwk::MemoryLevel::MEMORY_LEVEL_LOW);
108 break;
109 case SystemMemoryLevel::MEMORY_LEVEL_CRITICAL:
110 appMgrClient_->NotifyMemoryLevel(AppExecFwk::MemoryLevel::MEMORY_LEVEL_CRITICAL);
111 break;
112 default:
113 break;
114 }
115 }
116
PsiHandler()117 void MemoryLevelManager::PsiHandler()
118 {
119 if (!initialized_) {
120 HILOGE("is not initialized, return!");
121 return;
122 }
123 std::function<void()> func = std::bind(&MemoryLevelManager::PsiHandlerInner, this);
124 handler_->PostImmediateTask(func);
125 }
126 } // namespace Memory
127 } // namespace OHOS
128