添加 freem 命令

kit/src/index.js

@@ -12,6 +12,7 @@ const path = require("path");
 const fs = require("fs");
 const {sm3} = require("sm-crypto");
 const zlib = require("zlib");
+const mem = require("./mem")
 
 parser.addCmdLine("man", "打开在线帮助;", async function (){
     const uConfig = await $context.get("uConfig")
@@ -113,6 +114,13 @@ parser.addCmdLine("install [module]", "安装/更新模块;", async function (cl
     remote.install(cli.getParamValue("module"))
 });
 
+
+parser.addCmdLine("freem [level]", "释放内存", function (cli) {
+    let level = cli.getParamValue("level")
+    mem.free( level )
+});
+
+
 parser.addCmdLine("killport <port>", "释放端口", function (cli) {
     let port = cli.getParamValue("port")
     net.killport( parseInt(port, 10) );

kit/src/mem.js

@@ -0,0 +1,22 @@
+const osutil = require("./util/osutil")
+const shell = require("./shell")
+
+function free(level) {
+    osutil.choise({
+        [osutil.Windows] : ( level ) => {
+            throw Error("暂不支持")
+        },
+        [osutil.Linux] : ( level ) => {
+            if ( [1,2,3].indexOf( parseInt(level,10)) === -1 ) {
+                level = 1
+            }
+            shell.execSync("sync")
+            shell.execSync(`echo ${level} > /proc/sys/vm/drop_caches`)
+        },
+    })
+}
+
+
+module.exports = {
+    free
+}

kit/src/util/osutil.js

@@ -1,7 +1,7 @@
 const os = require('os');
 const fs = require("fs");
-const Windows = 0;
-const Linux = 1;
+const Windows = "Windows";
+const Linux = "Linux";
 
 module.exports = {
 
@@ -11,11 +11,11 @@ module.exports = {
      * 根据 os 不同，载入不同的方法
      */
     choise : function ( cbs ) {
-        if (os.type() == 'Windows_NT') {
+        if (os.type() === 'Windows_NT') {
             // windows平台
             return cbs && cbs[ Windows ]
         }
-        else if (os.type() == 'Linux') {
+        else if (os.type() === 'Linux') {
             // Linux平台
             return cbs && cbs[ Linux ]
         }