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/*-
* Public Domain 2014-2016 MongoDB, Inc.
* Public Domain 2008-2014 WiredTiger, Inc.
*
* This is free and unencumbered software released into the public domain.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a compiled
* binary, for any purpose, commercial or non-commercial, and by any
* means.
*
* In jurisdictions that recognize copyright laws, the author or authors
* of this software dedicate any and all copyright interest in the
* software to the public domain. We make this dedication for the benefit
* of the public at large and to the detriment of our heirs and
* successors. We intend this dedication to be an overt act of
* relinquishment in perpetuity of all present and future rights to this
* software under copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package com.wiredtiger.test;
import com.wiredtiger.db.Connection;
import com.wiredtiger.db.Cursor;
import com.wiredtiger.db.Session;
import com.wiredtiger.db.WiredTigerException;
import com.wiredtiger.db.wiredtiger;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import org.junit.Assert;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/*
* Test multiple threads concurrently inserting and reading.
* Each insert thread opens and closes for each record, so the
* test stresses the concurrency of these calls in particular.
* This is a test case for a problem reported in WT-2788.
*/
class InsertThread extends Thread {
private Connection conn;
private int threadId;
public InsertThread(Connection conn, int threadId) {
this.conn = conn;
this.threadId = threadId;
}
public void run()
{
try {
int ret;
for (int i = 0; i < 500; i++) {
Session session = conn.open_session(null);
Cursor cursor = session.open_cursor("table:cclose", null,
"overwrite");
cursor.putKeyString("key" + threadId + "-" + i);
cursor.putValueString("value1");
ret = cursor.insert();
cursor.close();
ret = session.close(null);
}
} catch (WiredTigerException wte) {
System.err.println("Exception " + wte);
}
}
}
class ScanThread extends Thread {
private Connection conn;
public ScanThread(Connection conn) {
this.conn = conn;
}
public void run()
{
try {
int ret;
Session session = conn.open_session(null);
Cursor cursor = session.open_cursor("table:cclose", null, null);
/* Show all records. */
while ((ret = cursor.next()) == 0) {
String key = cursor.getKeyString();
String value = cursor.getValueString();
System.out.println("Got record: " + key + " : " + value);
}
if (ret != wiredtiger.WT_NOTFOUND)
System.err.println("Cursor.next: " +
wiredtiger.wiredtiger_strerror(ret));
cursor.close();
session.close(null);
} catch (WiredTigerException wte) {
System.err.println("Exception " + wte);
}
}
}
public class ConcurrentCloseTest {
Connection conn;
Session session;
public static String home;
public static final int NUM_THREADS = 10;
@Test
public void test_threads()
{
setup();
try {
List<Thread> threads = new ArrayList<Thread>();
int i;
assertEquals(0, session.create("table:cclose",
"key_format=S,value_format=S"));
Cursor cursor = session.open_cursor("table:cclose", null,
"overwrite");
cursor.putKeyString("key1");
cursor.putValueString("value1");
assertEquals(0, cursor.insert());
cursor.close();
assertEquals(0, session.close(null));
for (i = 0; i < NUM_THREADS; i++) {
Thread insertThread = new InsertThread(conn, i);
Thread scanThread = new ScanThread(conn);
insertThread.start();
scanThread.start();
threads.add(insertThread);
threads.add(scanThread);
}
for (Thread thread : threads)
try {
thread.join();
}
catch (InterruptedException ie) {
fail();
}
assertEquals(0, conn.close(null));
System.exit(0);
}
catch (WiredTigerException wte) {
System.err.println("Exception: " + wte);
wte.printStackTrace();
System.exit(1);
}
}
private void setup() {
conn = wiredtiger.open("WT_HOME", "create");
session = conn.open_session(null);
}
private void teardown() {
session.close("");
conn.close("");
}
}
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