提交: e7115e74fca98117b64e8c604ec509960d6c8cdf - CommonTools (git)

自分のプロジェクトで利用するための汎用Javaライブラリ

Commit MetaInfo

• 修订版: e7115e74fca98117b64e8c604ec509960d6c8cdf (tree)
• 时间: 2014-02-15 00:09:58
• 作者: nkoseki <nykoseki@gmai...>
• Commiter: nkoseki

Log Message

シンプルなプロファイラの追加

更改概述

• modified: bin/org/dyndns/nuda/dynamic/compiler/ClassFileManager$Loader.class
• add: bin/org/dyndns/nuda/profile/SimpleProfiler$1.class
• add: bin/org/dyndns/nuda/profile/SimpleProfiler.class
• modified: bin/org/dyndns/nuda/tools/util/ReflectUtil$PREFIX.class
• add: src/org/dyndns/nuda/profile/SimpleProfiler.java

差异

Binary files a/bin/org/dyndns/nuda/dynamic/compiler/ClassFileManager$Loader.class and b/bin/org/dyndns/nuda/dynamic/compiler/ClassFileManager$Loader.class differ

Binary files /dev/null and b/bin/org/dyndns/nuda/profile/SimpleProfiler$1.class differ

Binary files /dev/null and b/bin/org/dyndns/nuda/profile/SimpleProfiler.class differ

Binary files a/bin/org/dyndns/nuda/tools/util/ReflectUtil$PREFIX.class and b/bin/org/dyndns/nuda/tools/util/ReflectUtil$PREFIX.class differ

--- /dev/null
+++ b/src/org/dyndns/nuda/profile/SimpleProfiler.java
@@ -0,0 +1,38 @@
+package org.dyndns.nuda.profile;
+
+import org.dyndns.nuda.tools.util.StringUtil;
+
+/**
+ * シンプルなプロファイラです
+ * 
+ * @author nkoseki
+ * 
+ */
+public class SimpleProfiler {
+	
+	/**
+	 * アプリケーションの開始から終了までのJavaヒープ領域の空きメモリサイズとターンアラウンド時間を計測し, 結果を
+	 * 標準出力へ出力します. <br />
+	 */
+	public static void reserveProfiler() {
+		final long freeMem = Runtime.getRuntime().freeMemory();
+		final long time = System.currentTimeMillis();
+		Runtime.getRuntime().addShutdownHook(new Thread() {
+			
+			@Override
+			public void run() {
+				long freeMemResult = Runtime.getRuntime().freeMemory();
+				long endTime = System.currentTimeMillis() - time;
+				String message =
+					StringUtil.format(
+						"before[{}] after[{}] diff[{}] time[{} s]",
+						freeMem,
+						freeMemResult,
+						freeMem - freeMemResult,
+						((double) endTime / 1000));
+				System.out.println(message);
+			}
+			
+		});
+	}
+}