fix: (timeout)add timeout protection for wireless speed detection

- Include ddlog.h header for logging functionality
- Add DDLog namespace usage for enhanced logging capabilities
- Implement 3-second timeout protection in getWirelessSpeed method to prevent
  iw command from hanging during kernel Netlink communication
- Add proper error handling with process termination when timeout occurs
- Return -1 to indicate failure when wireless speed cannot be obtained

Log: fix: (timeout)add timeout protection for wireless speed detection
Bug: https://github.com/linuxdeepin/deepin-system-monitor/pull/489/changes

Author: pppanghu77

deepin-system-monitor-main/system/netif.cpp

@@ -3,6 +3,7 @@
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
+#include "ddlog.h"
 #include "netif.h"
 
 #include "nl_addr.h"
@@ -20,6 +21,8 @@
 #include<unistd.h>
 #include<sys/ioctl.h>
 
+using namespace DDLog;
+
 namespace core {
 namespace system {
 
@@ -146,18 +149,26 @@ void NetifInfo::updateBrandInfo()
 double NetifInfo::getWirelessSpeed(const QString &interface) {
     QProcess process;
     process.start("iw", QStringList() << "dev" << interface << "link");
-    process.waitForFinished();
+
+    // 添加3秒超时保护，避免 iw 命令在内核 Netlink 通信时卡死
+    if (!process.waitForFinished(3000)) {
+        qCWarning(app) << "iw command timeout for interface:" << interface;
+        process.kill();
+        process.waitForFinished();
+        return -1;
+    }
+
     QString output = process.readAllStandardOutput();
 
     // 解析发送速率，实测发现控制中心显示的速率是 tx bitrate，所以这里只捕获 tx bitrate
     QRegularExpression txRegex("tx bitrate:\\s+(\\d+\\.?\\d*)\\s+(\\w+)");
     QRegularExpressionMatch txMatch = txRegex.match(output);
-    
+
     if (txMatch.hasMatch()) {
         double rate = txMatch.captured(1).toDouble();
         return static_cast<long>(rate);
     }
-    
+
     return -1;  // 表示无法获取速率
 }