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Merge pull request #84 in CORE/base-third from ~ABEL.CHEN/base-third:release/10.0 to release/10.0 

* commit '68085657b2a1158c5e8b21e88ad0a5c814f48eb1':
  线程切换，多线程同步问题
  fix import
  druid断线重连机制修复
final/10.0.3
abel.chen 6 years ago
parent
84c6864825 68085657b2
commit
298a36ade7
1 changed files with 135 additions and 86 deletions
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  1. 87
      fine-druid/src/com/fr/third/alibaba/druid/pool/DruidDataSource.java

87
fine-druid/src/com/fr/third/alibaba/druid/pool/DruidDataSource.java
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@ -143,7 +143,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
private LogStatsThread logStatsThread;
private int createTaskCount;
private final CountDownLatch initedLatch = new CountDownLatch(2);
private CountDownLatch initedLatch = new CountDownLatch(2);
private volatile boolean enable = true;
@ -167,11 +167,11 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
private volatile boolean keepAlive = false;
public DruidDataSource(){
public DruidDataSource() {
this(false);
}
public DruidDataSource(boolean fairLock){
public DruidDataSource(boolean fairLock) {
super(fairLock);
configFromPropety(System.getProperties());
@ -602,6 +602,34 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
this.connectProperties = properties;
}
private synchronized void createThreadChange() {
String threadName = "Druid-ConnectionPool-Create-" + System.identityHashCode(this) + this.getUrl();
createConnectionThread = new CreateConnectionThread(threadName);
createConnectionThread.setStarted(false);
String destroyName = "Druid-ConnectionPool-Destroy-" + System.identityHashCode(this) + this.getUrl();
destroyConnectionThread = new DestroyConnectionThread(destroyName);
destroyConnectionThread.setStarted(false);
initedLatch = new CountDownLatch(2);
}
private void checkThread() throws SQLException {
if (!createConnectionThread.isStarted() && !destroyConnectionThread.isStarted()) {
synchronized (this) {//线程安全问题，加个双检锁
if (!createConnectionThread.isStarted() && !destroyConnectionThread.isStarted()) {
createConnectionThread.setStarted(true);
createConnectionThread.start();
destroyConnectionThread.setStarted(true);
destroyConnectionThread.start();
try {
initedLatch.await();
} catch (InterruptedException e) {
throw new SQLException(e.getMessage(), e);
}
}
}
}
}
public void init() throws SQLException {
if (inited) {
return;
@ -817,7 +845,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
protected void createAndStartCreatorThread() {
if (createScheduler == null) {
String threadName = "Druid-ConnectionPool-Create-" + System.identityHashCode(this);
String threadName = "Druid-ConnectionPool-Create-" + System.identityHashCode(this) + this.getUrl();
createConnectionThread = new CreateConnectionThread(threadName);
createConnectionThread.start();
return;
@ -1055,7 +1083,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
public DruidPooledConnection getConnection(long maxWaitMillis) throws SQLException {
init();
checkThread();
if (filters.size() > 0) {
FilterChainImpl filterChain = new FilterChainImpl(this);
return filterChain.dataSource_connect(this, maxWaitMillis);
@ -1076,7 +1104,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
public DruidPooledConnection getConnectionDirect(long maxWaitMillis) throws SQLException {
int notFullTimeoutRetryCnt = 0;
for (;;) {
for (; ; ) {
// handle notFullTimeoutRetry
DruidPooledConnection poolableConnection;
try {
@ -1235,7 +1263,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
if (holder == null) {
Throwable throwable = this.createError;
if (throwable != null) {
if(throwable instanceof SQLException){
if (throwable instanceof SQLException) {
throw (SQLException) throwable;
}
throw new GetConnectionTimeoutException(throwable.getMessage(), throwable);
@ -1249,7 +1277,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
.append(", maxActive " + maxActive)//
;
JdbcDataSourceStat sourceStat = this.getDataSourceStat();
if(sourceStat != null) {
if (sourceStat != null) {
List<JdbcSqlStatValue> sqlList = sourceStat.getRuningSqlList();
for (int i = 0; i < sqlList.size(); ++i) {
if (i != 0) {
@ -1633,7 +1661,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
private DruidConnectionHolder pollLast(long nanos) throws InterruptedException, SQLException {
long estimate = nanos;
for (;;) {
for (; ; ) {
if (poolingCount == 0) {
emptySignal(); // send signal to CreateThread create connection
@ -1946,7 +1974,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
}
private void runInternal() {
for (;;) {
for (; ; ) {
// addLast
lock.lock();
@ -2043,8 +2071,9 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
}
public class CreateConnectionThread extends Thread {
private volatile boolean started = true;
public CreateConnectionThread(String name){
public CreateConnectionThread(String name) {
super(name);
this.setDaemon(true);
}
@ -2054,7 +2083,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
long lastDiscardCount = 0;
int errorCount = 0;
for (;;) {
for (; ; ) {
// addLast
try {
lock.lockInterruptibly();
@ -2126,6 +2155,8 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
} catch (InterruptedException interruptEx) {
break;
}
DruidDataSource.this.createThreadChange();
break;
}
} catch (RuntimeException e) {
LOG.error("create connection error", e);
@ -2150,11 +2181,20 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
errorCount = 0; // reset errorCount
}
}
public boolean isStarted() {
return started;
}
public void setStarted(boolean started) {
this.started = started;
}
}
public class DestroyConnectionThread extends Thread {
private volatile boolean started = true;
public DestroyConnectionThread(String name){
public DestroyConnectionThread(String name) {
super(name);
this.setDaemon(true);
}
@ -2162,7 +2202,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
public void run() {
initedLatch.countDown();
for (;;) {
for (; ; ) {
// 从前面开始删除
try {
if (closed) {
@ -2186,6 +2226,13 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
}
}
public boolean isStarted() {
return started;
}
public void setStarted(boolean started) {
this.started = started;
}
}
public class DestroyTask implements Runnable {
@ -2203,14 +2250,14 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
public class LogStatsThread extends Thread {
public LogStatsThread(String name){
public LogStatsThread(String name) {
super(name);
this.setDaemon(true);
}
public void run() {
try {
for (;;) {
for (; ; ) {
try {
logStats();
} catch (Exception e) {
@ -2236,7 +2283,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
try {
Iterator<DruidPooledConnection> iter = activeConnections.keySet().iterator();
for (; iter.hasNext();) {
for (; iter.hasNext(); ) {
DruidPooledConnection pooledConnection = iter.next();
if (pooledConnection.isRunning()) {
@ -2304,7 +2351,9 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
return removeCount;
}
/** Instance key */
/**
* Instance key
*/
protected String instanceKey = null;
public Reference getReference() throws NamingException {
@ -2998,7 +3047,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
}
int fillCount = 0;
for (;;) {
for (; ; ) {
try {
lock.lockInterruptibly();
} catch (InterruptedException e) {

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