qt5base-lts/tests/auto/sql/kernel/qsqlthread/tst_qsqlthread.cpp

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/****************************************************************************
**
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** This file is part of the test suite of the Qt Toolkit.
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#include <QtTest/QtTest>
#include "../qsqldatabase/tst_databases.h"
#include <QtCore>
#include <QtSql>
#include "qdebug.h"
#ifdef Q_OS_LINUX
#include <pthread.h>
#endif
const QString qtest(qTableName("qtest", __FILE__, QSqlDatabase()));
// set this define if Oracle is built with threading support
//#define QOCI_THREADED
class tst_QSqlThread : public QObject
{
Q_OBJECT
public:
tst_QSqlThread();
virtual ~tst_QSqlThread();
void dropTestTables();
void createTestTables();
void recreateTestTables();
void repopulateTestTables();
void generic_data(const QString &engine=QString());
tst_Databases dbs;
public slots:
void initTestCase();
void cleanupTestCase();
void init();
void cleanup();
protected slots:
void threadFinished() { ++threadFinishedCount; }
private slots:
void simpleThreading_data() { generic_data(); }
void simpleThreading();
void readWriteThreading_data() { generic_data(); }
void readWriteThreading();
void readFromSingleConnection_data() { generic_data(); }
void readFromSingleConnection();
void readWriteFromSingleConnection_data() { generic_data(); }
void readWriteFromSingleConnection();
void preparedReadWriteFromSingleConnection_data() { generic_data(); }
void preparedReadWriteFromSingleConnection();
void transactionsFromSingleConnection_data() { generic_data(); }
void transactionsFromSingleConnection();
private:
int threadFinishedCount;
};
static QAtomicInt counter;
class QtTestSqlThread : public QThread
{
Q_OBJECT
public:
QtTestSqlThread(const QSqlDatabase &aDb, QObject *parent = 0)
: QThread(parent), sourceDb(aDb) {}
void runHelper(const QString &dbName)
{
QSqlDatabase db = QSqlDatabase::cloneDatabase(sourceDb, dbName);
QVERIFY_SQL(db, open());
int sum = 0;
QSqlQuery q("select id from " + qtest, db);
QVERIFY_SQL(q, isActive());
while (q.next())
sum += q.value(0).toInt();
QCOMPARE(sum, 6);
q.clear();
}
void run()
{
QString dbName = QString("QThreadDb%1").arg((size_t)currentThreadId());
runHelper(dbName);
QSqlDatabase::database(dbName).close();
QSqlDatabase::removeDatabase(dbName);
}
private:
QSqlDatabase sourceDb;
};
enum { ProdConIterations = 10 };
class SqlProducer: public QThread
{
Q_OBJECT
public:
SqlProducer(const QSqlDatabase &aDb, QObject *parent = 0)
: QThread(parent), sourceDb(aDb) {}
void runHelper(const QString &dbName)
{
QSqlDatabase db = QSqlDatabase::cloneDatabase(sourceDb, dbName);
QVERIFY_SQL(db, open());
QSqlQuery q(db);
QVERIFY_SQL(q, prepare("insert into " + qtest + " values (?, ?, ?)"));
int id = 10;
for (int i = 0; i < ProdConIterations; ++i) {
q.bindValue(0, ++id);
q.bindValue(1, "threaddy");
q.bindValue(2, 10);
QVERIFY_SQL(q, exec());
#ifdef Q_OS_LINUX
pthread_yield();
#endif
}
}
void run()
{
QString dbName = QString("Producer%1").arg((size_t)currentThreadId());
runHelper(dbName);
QSqlDatabase::database(dbName).close();
QSqlDatabase::removeDatabase(dbName);
}
private:
QSqlDatabase sourceDb;
};
class SqlConsumer: public QThread
{
Q_OBJECT
public:
SqlConsumer(const QSqlDatabase &aDb, QObject *parent = 0)
: QThread(parent), sourceDb(aDb) {}
void runHelper(const QString &dbName)
{
QSqlDatabase db = QSqlDatabase::cloneDatabase(sourceDb, dbName);
QVERIFY_SQL(db, open());
QSqlQuery q1(db), q2(db);
QVERIFY_SQL(q2, prepare("delete from " + qtest + " where id = :id"));
for (int i = 0; i < ProdConIterations; ++i) {
QVERIFY_SQL(q1, exec("select max(id) from " + qtest));
q1.first();
q2.bindValue("id", q1.value(0));
q1.clear();
QVERIFY_SQL(q2, exec());
#ifdef Q_OS_LINUX
pthread_yield();
#endif
}
}
void run()
{
QString dbName = QString("Consumer%1").arg((size_t)currentThreadId());
runHelper(dbName);
QSqlDatabase::database(dbName).close();
QSqlDatabase::removeDatabase(dbName);
}
private:
QSqlDatabase sourceDb;
};
class SqlThread: public QThread
{
Q_OBJECT
public:
enum Mode { SimpleReading, PreparedReading, SimpleWriting, PreparedWriting };
SqlThread(Mode m, const QSqlDatabase &db, QObject *parent = 0)
: QThread(parent), sourceDb(db), mode(m) {}
void run()
{
QSqlDatabase &db = sourceDb;
switch (mode) {
case SimpleReading: {
// Executes a Query for reading, iterates over the first 4 results
QSqlQuery q(sourceDb);
for (int j = 0; j < ProdConIterations; ++j) {
QVERIFY_SQL(q, exec("select id,name from " + qtest + " order by id"));
for (int i = 1; i < 4; ++i) {
QVERIFY_SQL(q, next());
QCOMPARE(q.value(0).toInt(), i);
}
}
break; }
case SimpleWriting: {
// Executes a query for writing (appends a new row)
QSqlQuery q(sourceDb);
for (int j = 0; j < ProdConIterations; ++j) {
QVERIFY_SQL(q, exec(QString("insert into " + qtest
+ " (id, name) values(%1, '%2')")
.arg(counter.fetchAndAddRelaxed(1)).arg("Robert")));
}
break; }
case PreparedReading: {
// Prepares a query for reading and iterates over the results
QSqlQuery q(sourceDb);
QVERIFY_SQL(q, prepare("select id, name from " + qtest + " where id = ?"));
for (int j = 0; j < ProdConIterations; ++j) {
q.addBindValue(j % 3 + 1);
QVERIFY_SQL(q, exec());
QVERIFY_SQL(q, next());
QCOMPARE(q.value(0).toInt(), j % 3 + 1);
}
break; }
case PreparedWriting: {
QSqlQuery q(sourceDb);
QVERIFY_SQL(q, prepare("insert into " + qtest + " (id, name) "
"values(?, ?)"));
for (int i = 0; i < ProdConIterations; ++i) {
q.addBindValue(counter.fetchAndAddRelaxed(1));
q.addBindValue("Robert");
QVERIFY_SQL(q, exec());
}
break; }
}
}
private:
QSqlDatabase sourceDb;
Mode mode;
};
tst_QSqlThread::tst_QSqlThread()
: threadFinishedCount(0)
{
}
tst_QSqlThread::~tst_QSqlThread()
{
}
void tst_QSqlThread::generic_data(const QString& engine)
{
if ( dbs.fillTestTable(engine) == 0 ) {
if(engine.isEmpty())
QSKIP( "No database drivers are available in this Qt configuration");
else
QSKIP( (QString("No database drivers of type %1 are available in this Qt configuration").arg(engine)).toLocal8Bit());
}
}
void tst_QSqlThread::dropTestTables()
{
for (int i = 0; i < dbs.dbNames.count(); ++i) {
QSqlDatabase db = QSqlDatabase::database(dbs.dbNames.at(i));
QSqlQuery q(db);
tst_Databases::safeDropTables(db, QStringList() << qtest << qTableName("qtest2", __FILE__, db) << qTableName("emptytable", __FILE__, db));
}
}
void tst_QSqlThread::createTestTables()
{
for (int i = 0; i < dbs.dbNames.count(); ++i) {
QSqlDatabase db = QSqlDatabase::database(dbs.dbNames.at(i));
QSqlQuery q(db);
QVERIFY_SQL(q, exec("create table " + qtest
+ "(id int NOT NULL primary key, name varchar(20), title int)"));
QVERIFY_SQL(q, exec("create table " + qTableName("qtest2", __FILE__, db)
+ "(id int NOT NULL primary key, title varchar(20))"));
QVERIFY_SQL(q, exec("create table " + qTableName("emptytable", __FILE__, db)
+ "(id int NOT NULL primary key)"));
}
}
void tst_QSqlThread::repopulateTestTables()
{
for (int i = 0; i < dbs.dbNames.count(); ++i) {
QSqlDatabase db = QSqlDatabase::database(dbs.dbNames.at(i));
QSqlQuery q(db);
QVERIFY_SQL(q, exec("delete from " + qtest));
QVERIFY_SQL(q, exec("insert into " + qtest + " values(1, 'harry', 1)"));
QVERIFY_SQL(q, exec("insert into " + qtest + " values(2, 'trond', 2)"));
QVERIFY_SQL(q, exec("insert into " + qtest + " values(3, 'vohi', 3)"));
QVERIFY_SQL(q, exec("delete from " + qTableName("qtest2", __FILE__, db)));
QVERIFY_SQL(q, exec("insert into " + qTableName("qtest2", __FILE__, db) + " values(1, 'herr')"));
QVERIFY_SQL(q, exec("insert into " + qTableName("qtest2", __FILE__, db) + " values(2, 'mister')"));
}
}
void tst_QSqlThread::recreateTestTables()
{
dropTestTables();
createTestTables();
repopulateTestTables();
}
void tst_QSqlThread::initTestCase()
{
dbs.open();
recreateTestTables();
}
void tst_QSqlThread::cleanupTestCase()
{
dropTestTables();
dbs.close();
}
void tst_QSqlThread::init()
{
threadFinishedCount = 0;
counter.store(4);
}
void tst_QSqlThread::cleanup()
{
// repopulateTestTables();
}
// This test creates two threads that clone their db connection and read
// from it
void tst_QSqlThread::simpleThreading()
{
QFETCH(QString, dbName);
QSqlDatabase db = QSqlDatabase::database(dbName);
CHECK_DATABASE(db);
if (db.databaseName() == ":memory:")
QSKIP("does not work with in-memory databases");
QtTestSqlThread t1(db);
QtTestSqlThread t2(db);
connect(&t1, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
connect(&t2, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
t1.start();
t2.start();
while (threadFinishedCount < 2)
QTest::qWait(100);
}
// This test creates two threads that clone their db connection and read
// or write
void tst_QSqlThread::readWriteThreading()
{
QFETCH(QString, dbName);
QSqlDatabase db = QSqlDatabase::database(dbName);
CHECK_DATABASE(db);
if (db.databaseName() == ":memory:")
QSKIP("does not work with in-memory databases");
else if (tst_Databases::isMSAccess(db))
QSKIP("does not work with MS Access databases");
SqlProducer producer(db);
SqlConsumer consumer(db);
connect(&producer, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
connect(&consumer, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
producer.start();
consumer.start();
while (threadFinishedCount < 2)
QTest::qWait(100);
}
// run with n threads in parallel. Change this constant to hammer the poor DB server even more
static const int maxThreadCount = 4;
void tst_QSqlThread::readFromSingleConnection()
{
#ifdef QOCI_THREADED
QFETCH(QString, dbName);
QSqlDatabase db = QSqlDatabase::database(dbName);
CHECK_DATABASE(db);
if (db.databaseName() == ":memory:")
QSKIP("does not work with in-memory databases");
QObject cleanupHelper; // make sure the threads die when we exit the scope
for (int i = 0; i < maxThreadCount; ++i) {
SqlThread *reader = new SqlThread(SqlThread::SimpleReading, db, &cleanupHelper);
connect(reader, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
reader->start();
}
while (threadFinishedCount < maxThreadCount)
QTest::qWait(100);
#endif
}
void tst_QSqlThread::readWriteFromSingleConnection()
{
#ifdef QOCI_THREADED
QFETCH(QString, dbName);
QSqlDatabase db = QSqlDatabase::database(dbName);
CHECK_DATABASE(db);
if (db.databaseName() == ":memory:")
QSKIP("does not work with in-memory databases");
QObject cleanupHelper;
for (int i = 0; i < maxThreadCount; ++i) {
SqlThread *reader = new SqlThread(SqlThread::SimpleReading, db, &cleanupHelper);
connect(reader, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
reader->start();
SqlThread *writer = new SqlThread(SqlThread::SimpleWriting, db, &cleanupHelper);
connect(writer, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
writer->start();
}
while (threadFinishedCount < maxThreadCount * 2)
QTest::qWait(100);
#endif
}
void tst_QSqlThread::preparedReadWriteFromSingleConnection()
{
#ifdef QOCI_THREADED
QFETCH(QString, dbName);
QSqlDatabase db = QSqlDatabase::database(dbName);
CHECK_DATABASE(db);
if (db.databaseName() == ":memory:")
QSKIP("does not work with in-memory databases");
QObject cleanupHelper;
for (int i = 0; i < maxThreadCount; ++i) {
SqlThread *reader = new SqlThread(SqlThread::PreparedReading, db, &cleanupHelper);
connect(reader, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
reader->start();
SqlThread *writer = new SqlThread(SqlThread::PreparedWriting, db, &cleanupHelper);
connect(writer, SIGNAL(finished()), this, SLOT(threadFinished()), Qt::QueuedConnection);
writer->start();
}
while (threadFinishedCount < maxThreadCount * 2)
QTest::qWait(100);
#endif
}
void tst_QSqlThread::transactionsFromSingleConnection()
{
#ifdef QOCI_THREADED
QFETCH(QString, dbName);
QSqlDatabase db = QSqlDatabase::database(dbName);
CHECK_DATABASE(db);
if (db.databaseName() == ":memory:")
QSKIP("does not work with in-memory databases");
// start and commit a transaction
QVERIFY_SQL(db, db.transaction());
preparedReadWriteFromSingleConnection(); // read and write from multiple threads
if (QTest::currentTestFailed())
return;
QVERIFY_SQL(db, db.commit());
// reset test environment
threadFinishedCount = 0;
// start and roll back a transaction
QVERIFY_SQL(db, db.transaction());
preparedReadWriteFromSingleConnection(); // read and write from multiple threads
if (QTest::currentTestFailed())
return;
QVERIFY_SQL(db, db.rollback());
#endif
}
QTEST_MAIN(tst_QSqlThread)
#include "tst_qsqlthread.moc"