make_shared使用规范说明

Signed-off-by: Nxuyong <xuyong59@huawei.com>

en/device-dev/subsystems/subsys-dfx-hisysevent-listening.md

@@ -101,18 +101,25 @@ C++
     Call the **AddEventListener** API of the **HiSysEventManager** class to add a listener for system events.
 
     ```
-    auto demoListener = std::make_shared<DemoListener>();
-    // Add a ListenerRule object based on the event tag, with RuleType left unspecified (in this case, ruleType is defaulted to WHOLE_WORD).
-    ListenerRule tagRule("dfx");
-    // Add a ListenerRule object based on the event tag, with RuleType set as REGULAR.
-    ListenerRule regRule("dfx.*", RuleType::REGULAR);
-    // Add a ListenerRule object based on the event domain and event name, with RuleType set as PREFIX.
-    ListenerRule domainNameRule("HIVIEWDFX", "APP_USAGE", RuleType::PREFIX);
-    std::vector<ListenerRule> sysRules;
-    sysRules.push_back(tagRule);
-    sysRules.push_back(regRule);
-    sysRules.push_back(domainNameRule);
-    HiSysEventManager::AddEventListener(demoListener, sysRules);
+    std::shared_ptr<DemoListener> demoListener = nullptr;
+    try {
+        demoListener = std::make_shared<DemoListener>();
+    } catch(...) {
+        // Catch exception thrown by make_shared
+    }
+    if (demoListener != nullptr) {
+        // Add a ListenerRule object based on the event tag, with RuleType left unspecified (in this case, ruleType is defaulted to WHOLE_WORD).
+        ListenerRule tagRule("dfx");
+        // Add a ListenerRule object based on the event tag, with RuleType set as REGULAR.
+        ListenerRule regRule("dfx.*", RuleType::REGULAR);
+        // Add a ListenerRule object based on the event domain and event name, with RuleType set as PREFIX.
+        ListenerRule domainNameRule("HIVIEWDFX", "APP_USAGE", RuleType::PREFIX);
+        std::vector<ListenerRule> sysRules;
+        sysRules.push_back(tagRule);
+        sysRules.push_back(regRule);
+        sysRules.push_back(domainNameRule);
+        HiSysEventManager::AddEventListener(demoListener, sysRules);
+    }
     ```
 
 2.  Configure the **BUILD.gn** file.

en/device-dev/subsystems/subsys-dfx-hisysevent-query.md

@@ -86,10 +86,17 @@ C++
     } // namespace OHOS
     
     // Invoke the query callback API to obtain system events.
-    auto queryCallBack = std::make_shared<HiSysEventToolQuery>();
-    struct QueryArg args(clientCmdArg.beginTime, clientCmdArg.endTime, clientCmdArg.maxEvents);
-    std::vector<QueryRule> mRules;
-    HiSysEventManager::QueryHiSysEvent(args, mRules, queryCallBack);
+    std::shared_ptr<HiSysEventToolQuery> queryCallBack = nullptr;
+    try {
+        queryCallBack = std::make_shared<HiSysEventToolQuery>();
+    } catch(...) {
+        // Catch exception thrown by make_shared
+    }
+    if (queryCallBack != nullptr) {
+        struct QueryArg args(clientCmdArg.beginTime, clientCmdArg.endTime, clientCmdArg.maxEvents);
+        std::vector<QueryRule> rules;
+        HiSysEventManager::QueryHiSysEvent(args, rules, queryCallBack);
+    }
     ```
 
 2.  Modify the **BUILD.gn** file.

zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-listening.md

@@ -103,18 +103,25 @@ HiSysEvent提供了跨进程订阅机制，开发者可以通过注册订阅接
     通过HiSysEventManager类提供的AddEventListener接口注册回调对象，完成对HiSysEvent的订阅：
 
     ```
-    auto demoListener = std::make_shared<DemoListener>();
-    // 事件标签规则订阅，规则类型为默认的全词匹配类型
-    ListenerRule tagRule("dfx");
-    // 事件标签规则订阅，规则类型为正则匹配类型
-    ListenerRule regRule("dfx.*", RuleType::REGULAR);
-    // 事件领域及事件名称规则订阅，规则类型为前缀匹配类型
-    ListenerRule domainNameRule("HIVIEWDFX", "APP_USAGE", RuleType::PREFIX);
-    std::vector<ListenerRule> sysRules;
-    sysRules.push_back(tagRule);
-    sysRules.push_back(regRule);
-    sysRules.push_back(domainNameRule);
-    HiSysEventManager::AddEventListener(demoListener, sysRules);
+    std::shared_ptr<DemoListener> demoListener = nullptr;
+    try {
+        demoListener = std::make_shared<DemoListener>();
+    } catch(...) {
+        // 智能指针获取失败异常处理
+    }
+    if (demoListener != nullptr) {
+        // 事件标签规则订阅，规则类型为默认的全词匹配类型
+        ListenerRule tagRule("dfx");
+        // 事件标签规则订阅，规则类型为正则匹配类型
+        ListenerRule regRule("dfx.*", RuleType::REGULAR);
+        // 事件领域及事件名称规则订阅，规则类型为前缀匹配类型
+        ListenerRule domainNameRule("HIVIEWDFX", "APP_USAGE", RuleType::PREFIX);
+        std::vector<ListenerRule> sysRules;
+        sysRules.push_back(tagRule);
+        sysRules.push_back(regRule);
+        sysRules.push_back(domainNameRule);
+        HiSysEventManager::AddEventListener(demoListener, sysRules);
+    }
     ```
 
 2.  编译配置

zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-query.md

@@ -86,10 +86,17 @@ C++接口实例。
     } // namespace OHOS
     
     // 调用查询接口获取HiSysEvent事件
-    auto queryCallBack = std::make_shared<HiSysEventToolQuery>();
-    struct QueryArg args(clientCmdArg.beginTime, clientCmdArg.endTime, clientCmdArg.maxEvents);
-    std::vector<QueryRule> mRules;
-    HiSysEventManager::QueryHiSysEvent(args, mRules, queryCallBack);
+    std::shared_ptr<HiSysEventToolQuery> queryCallBack = nullptr;
+    try {
+        queryCallBack = std::make_shared<HiSysEventToolQuery>();
+    } catch (...) {
+        // 智能指针获取失败处理
+    }
+    if (queryCallBack != nullptr) {
+        struct QueryArg args(clientCmdArg.beginTime, clientCmdArg.endTime, clientCmdArg.maxEvents);
+        std::vector<QueryRule> rules;
+        HiSysEventManager::QueryHiSysEvent(args, rules, queryCallBack);
+    }
     ```
 
 2.  编译设置：