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 "reclaim_priority_config.h"
16 #include "memmgr_ptr_util.h"
17 #include "kernel_interface.h"
18 #include "reclaim_priority_manager.h"
19 #include "memmgr_config_manager.h"
20 #include "memmgr_log.h"
21 #include "xml_helper.h"
22 
23 namespace OHOS {
24 namespace Memory {
25 namespace {
26     const std::string TAG = "ReclaimPriorityConfig";
27 }
28 
ParseConfig(const xmlNodePtr & rootNodePtr)29 void ReclaimPriorityConfig::ParseConfig(const xmlNodePtr &rootNodePtr)
30 {
31     if (!XmlHelper::CheckNode(rootNodePtr) || !XmlHelper::HasChild(rootNodePtr)) {
32         HILOGD("Node exsist:%{public}d,has child node:%{public}d",
33                XmlHelper::CheckNode(rootNodePtr), XmlHelper::HasChild(rootNodePtr));
34         return;
35     }
36     for (xmlNodePtr currNode = rootNodePtr->xmlChildrenNode; currNode != nullptr; currNode = currNode->next) {
37         if (!XmlHelper::CheckNode(currNode)) {
38             return;
39         }
40         std::string name = std::string(reinterpret_cast<const char *>(currNode->name));
41         if (name.compare("killalbeSystemApps") == 0) {
42             ParseReclaimPriorityKillableSystemAppsConfig(currNode);
43             continue;
44         }
45         if (name.compare("importantBgApps") == 0) {
46             ParseReclaimPriorityImportantBgAppsConfig(currNode);
47             continue;
48         }
49         HILOGW("unknown node :<%{public}s>", name.c_str());
50         return;
51     }
52     return;
53 }
54 
ParseReclaimPriorityKillableSystemAppsConfig(const xmlNodePtr & rootNodePtr)55 void ReclaimPriorityConfig::ParseReclaimPriorityKillableSystemAppsConfig(const xmlNodePtr &rootNodePtr)
56 {
57     if (!XmlHelper::CheckNode(rootNodePtr) || !XmlHelper::HasChild(rootNodePtr)) {
58         HILOGD("Node exsist:%{public}d,has child node:%{public}d",
59                XmlHelper::CheckNode(rootNodePtr), XmlHelper::HasChild(rootNodePtr));
60         return;
61     }
62     for (xmlNodePtr currNode = rootNodePtr->xmlChildrenNode; currNode != nullptr; currNode = currNode->next) {
63         if (!XmlHelper::CheckNode(currNode)) {
64             return;
65         }
66         std::string name = std::string(reinterpret_cast<const char *>(currNode->name));
67         if (name.compare("killableSysApp") == 0) {
68             auto contentPtr = xmlNodeGetContent(currNode);
69             if (contentPtr == nullptr) {
70                 continue;
71             }
72             std::string value = std::string(reinterpret_cast<char *>(contentPtr));
73             HILOGW("read a killable app: %{public}s", value.c_str());
74             if (value.size() == 0) {
75                 HILOGE("read a empty killable app: %{public}s, ignore it!", value.c_str());
76                 continue;
77             }
78             killalbeSystemApps_.insert(value);
79             xmlFree(contentPtr);
80             continue;
81         }
82         HILOGW("unknown node :<%{public}s>", name.c_str());
83         return;
84     }
85     return;
86 }
87 
ParseReclaimPriorityImportantBgAppsConfig(const xmlNodePtr & rootNodePtr)88 void ReclaimPriorityConfig::ParseReclaimPriorityImportantBgAppsConfig(const xmlNodePtr &rootNodePtr)
89 {
90     HILOGI("called");
91     if (!XmlHelper::CheckNode(rootNodePtr) || !XmlHelper::HasChild(rootNodePtr)) {
92         HILOGD("Node exsist:%{public}d,has child node:%{public}d",
93                XmlHelper::CheckNode(rootNodePtr), XmlHelper::HasChild(rootNodePtr));
94         return;
95     }
96     for (xmlNodePtr currNode = rootNodePtr->xmlChildrenNode; currNode != nullptr; currNode = currNode->next) {
97         if (!XmlHelper::CheckNode(currNode)) {
98             return;
99         }
100         std::string name = std::string(reinterpret_cast<const char *>(currNode->name));
101         if (name.compare("importantBgApp") == 0) {
102             std::map<std::string, std::string> param;
103             std::string procName;
104             int minPriority;
105 
106             XmlHelper::GetModuleParam(currNode, param);
107             XmlHelper::SetStringParam(param, "procName", procName, "");
108             XmlHelper::SetIntParam(param, "minPriority", minPriority, RECLAIM_PRIORITY_MAX + 1);
109 
110             if (procName.size() == 0 || minPriority < RECLAIM_PRIORITY_MIN || minPriority > RECLAIM_PRIORITY_MAX + 1) {
111                 HILOGE("read fail, ignore it!");
112                 continue;
113             }
114             importantBgApps_.insert(std::make_pair(procName, minPriority));
115             continue;
116         }
117         HILOGW("unknown node :<%{public}s>", name.c_str());
118     }
119     return;
120 }
121 
GetkillalbeSystemApps()122 std::set<std::string> ReclaimPriorityConfig::GetkillalbeSystemApps()
123 {
124     return killalbeSystemApps_;
125 }
126 
GetImportantBgApps()127 std::map<std::string, int> ReclaimPriorityConfig::GetImportantBgApps()
128 {
129     return importantBgApps_;
130 }
131 
Dump(int fd)132 void ReclaimPriorityConfig::Dump(int fd)
133 {
134     dprintf(fd, "ImportantBgApps:   \n");
135     for (auto it = importantBgApps_.begin(); it != importantBgApps_.end(); it++) {
136         dprintf(fd, "              procName:%s  ---->  prio:%d \n", it->first.c_str(), it->second);
137     }
138 }
139 } // namespace Memory
140 } // namespace OHOS
141