diff tests/Test_Cforkbomb.java @ 0:a5a898f6886c

Copy of MonetDB java directory changeset e6e32756ad31.
author Sjoerd Mullender <sjoerd@acm.org>
date Wed, 21 Sep 2016 09:34:48 +0200 (2016-09-21)
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children 04fbf3655452
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+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 1997 - July 2008 CWI, August 2008 - 2016 MonetDB B.V.
+ */
+
+import java.sql.*;
+import java.util.*;
+
+public class Test_Cforkbomb {
+	private static String args[];
+
+	static class Worker extends Thread {
+		private int id;
+
+		public Worker(int id) {
+			this.id = id;
+		}
+
+		public void run() {
+			try {
+				System.out.print("Establishing Connection " + id + "...");
+				Connection con = DriverManager.getConnection(args[0]);
+				System.out.println(" done...");
+
+				// do something with the connection to test if it works
+				Statement stmt = con.createStatement();
+				ResultSet rs = stmt.executeQuery("SELECT " + id);
+				if (!rs.next()) {
+					System.out.println("thread " + id + " got no response from server :(");
+				} else {
+					if (rs.getInt(1) == id) {
+						System.out.println("thread " + id + ": connection ok");
+					} else {
+						System.out.println("thread " + id + ": got garbage: " + rs.getString(1));
+					}
+				}
+
+				con.close();
+			} catch (SQLException e) {
+				System.out.println("thread " + id + " unhappy: " + e.toString());
+			}
+		}
+	}
+
+	public static void main(String[] args) throws Exception {
+		Test_Cforkbomb.args = args;
+		Class.forName("nl.cwi.monetdb.jdbc.MonetDriver");
+
+		// just DoS the server full throttle :)
+		int i;
+		for (i = 0; i < 200; i++) {
+			Worker w = new Worker(i);
+			w.start();
+		}
+	}
+}