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
17 #include "app_mem_info.h"
18 #include "app_mgr_client.h"
19 #include "kernel_interface.h"
20 #include "memmgr_config_manager.h"
21 #include "memmgr_log.h"
22 #include "memmgr_ptr_util.h"
23 #include "reclaim_priority_manager.h"
24 #ifdef USE_PURGEABLE_MEMORY
25 #include "purgeable_mem_manager.h"
26 #endif
27
28 namespace OHOS {
29 namespace Memory {
30 namespace {
31 const std::string TAG = "MemoryLevelManager";
32 }
33
34 IMPLEMENT_SINGLE_INSTANCE(MemoryLevelManager);
35
MemoryLevelManager()36 MemoryLevelManager::MemoryLevelManager()
37 {
38 initialized_ = GetEventHandler();
39 if (initialized_) {
40 HILOGI("init succeeded");
41 } else {
42 HILOGE("init failed");
43 }
44 }
45
GetEventHandler()46 bool MemoryLevelManager::GetEventHandler()
47 {
48 if (!handler_) {
49 MAKE_POINTER(handler_, shared, AppExecFwk::EventHandler, "failed to create event handler", return false,
50 AppExecFwk::EventRunner::Create());
51 }
52 return true;
53 }
54
CalcSystemMemoryLevel(SystemMemoryInfo & info)55 bool MemoryLevelManager::CalcSystemMemoryLevel(SystemMemoryInfo &info)
56 {
57 int currentBuffer = KernelInterface::GetInstance().GetCurrentBuffer();
58 std::shared_ptr<SystemMemoryLevelConfig> config =
59 std::make_shared<SystemMemoryLevelConfig>(MemmgrConfigManager::GetInstance().GetSystemMemoryLevelConfig());
60 if (config == nullptr) {
61 HILOGE("The SystemMemoryLevelConfig is NULL.");
62 return false;
63 }
64
65 if (currentBuffer <= config->GetCritical()) {
66 info.level = SystemMemoryLevel::MEMORY_LEVEL_CRITICAL;
67 } else if (currentBuffer <= config->GetLow()) {
68 info.level = SystemMemoryLevel::MEMORY_LEVEL_LOW;
69 } else if (currentBuffer <= config->GetModerate()) {
70 info.level = SystemMemoryLevel::MEMORY_LEVEL_MODERATE;
71 } else if (currentBuffer <= config->GetPurgeable()) {
72 info.level = SystemMemoryLevel::MEMORY_LEVEL_PURGEABLE;
73 } else {
74 return false;
75 }
76
77 HILOGI("critical:%{public}d low:%{public}d moderate:%{public}d purgeable:%{public}d in config, curBuf:%{public}dKB,"
78 "level:%{public}d.",
79 config->GetCritical(), config->GetLow(), config->GetModerate(), config->GetPurgeable(), currentBuffer,
80 static_cast<int>(info.level));
81 return true;
82 }
83
CalcReclaimAppList(std::vector<std::shared_ptr<AppEntity>> & appList)84 bool MemoryLevelManager::CalcReclaimAppList(std::vector<std::shared_ptr<AppEntity>> &appList)
85 {
86 ReclaimPriorityManager::BunldeCopySet bundleSet;
87 ReclaimPriorityManager::GetInstance().GetBundlePrioSet(bundleSet);
88 for (auto bundleInfo : bundleSet) {
89 std::shared_ptr<AppEntity> app;
90 MAKE_POINTER(app, shared, AppEntity, "make shared failed", return false, bundleInfo.uid_, bundleInfo.name_);
91 appList.push_back(app);
92 HILOGI("The app will be reclaimed, uid:%{public}d, name:%{public}s.", app->uid_, app->name_.c_str());
93 }
94 return true;
95 }
96
NotifyMemoryLevel(SystemMemoryInfo & info)97 void MemoryLevelManager::NotifyMemoryLevel(SystemMemoryInfo &info)
98 {
99 HILOGD("called!");
100 DECLARE_UNIQUE_POINTER(AppExecFwk::AppMgrClient, appMgrClient_);
101 MAKE_POINTER(appMgrClient_, unique, AppExecFwk::AppMgrClient, "make unique failed", return,
102 /* no param */);
103 switch (info.level) {
104 case SystemMemoryLevel::MEMORY_LEVEL_PURGEABLE: {
105 // no need notify appMgrClient_
106 break;
107 }
108 case SystemMemoryLevel::MEMORY_LEVEL_MODERATE: {
109 appMgrClient_->NotifyMemoryLevel(AppExecFwk::MemoryLevel::MEMORY_LEVEL_MODERATE);
110 break;
111 }
112 case SystemMemoryLevel::MEMORY_LEVEL_LOW: {
113 appMgrClient_->NotifyMemoryLevel(AppExecFwk::MemoryLevel::MEMORY_LEVEL_LOW);
114 break;
115 }
116 case SystemMemoryLevel::MEMORY_LEVEL_CRITICAL: {
117 appMgrClient_->NotifyMemoryLevel(AppExecFwk::MemoryLevel::MEMORY_LEVEL_CRITICAL);
118 break;
119 }
120 default:
121 return;
122 }
123 #ifdef USE_PURGEABLE_MEMORY
124 PurgeableMemManager::GetInstance().NotifyMemoryLevel(info);
125 #endif
126 }
127
TriggerMemoryLevelByDump(SystemMemoryInfo & info)128 void MemoryLevelManager::TriggerMemoryLevelByDump(SystemMemoryInfo &info)
129 {
130 HILOGD("called!");
131 if (info.source != MemorySource::MANUAL_DUMP) {
132 HILOGE("error: trigger not by dump!");
133 return;
134 }
135 NotifyMemoryLevel(info);
136 }
137
PsiHandlerInner()138 void MemoryLevelManager::PsiHandlerInner()
139 {
140 HILOGD("[%{public}ld] called", ++calledCount_);
141
142 /* Calculate the system memory level */
143 SystemMemoryInfo info = {MemorySource::PSI_MEMORY, SystemMemoryLevel::UNKNOWN};
144 if (!CalcSystemMemoryLevel(info)) {
145 return;
146 }
147 NotifyMemoryLevel(info);
148 }
149
PsiHandler()150 void MemoryLevelManager::PsiHandler()
151 {
152 if (!initialized_) {
153 HILOGE("is not initialized, return!");
154 return;
155 }
156 std::function<void()> func = std::bind(&MemoryLevelManager::PsiHandlerInner, this);
157 handler_->PostImmediateTask(func);
158 }
159 } // namespace Memory
160 } // namespace OHOS
161