4 files changed, 3 insertions, 69 deletions

diff --git a/src/corelib/thread/qreadwritelock.cpp b/src/corelib/thread/qreadwritelock.cpp
index 0ea8c4c00f..e6477bf5e0 100644
--- a/src/corelib/thread/qreadwritelock.cpp
+++ b/src/corelib/thread/qreadwritelock.cpp
@@ -136,27 +136,11 @@ void QReadWriteLock::lockForRead()
 {
     QMutexLocker lock(&d->mutex);
 
-    Qt::HANDLE self = 0;
-    if (d->recursive) {
-        self = QThread::currentThreadId();
-
-        QHash<Qt::HANDLE, int>::iterator it = d->currentReaders.find(self);
-        if (it != d->currentReaders.end()) {
-            ++it.value();
-            ++d->accessCount;
-            Q_ASSERT_X(d->accessCount > 0, "QReadWriteLock::lockForRead()",
-                       "Overflow in lock counter");
-            return;
-        }
-    }
-
     while (d->accessCount < 0 || d->waitingWriters) {
         ++d->waitingReaders;
         d->readerWait.wait(&d->mutex);
         --d->waitingReaders;
     }
-    if (d->recursive)
-        d->currentReaders.insert(self, 1);
 
     ++d->accessCount;
     Q_ASSERT_X(d->accessCount > 0, "QReadWriteLock::lockForRead()", "Overflow in lock counter");
@@ -182,24 +166,8 @@ bool QReadWriteLock::tryLockForRead()
 {
     QMutexLocker lock(&d->mutex);
 
-    Qt::HANDLE self = 0;
-    if (d->recursive) {
-        self = QThread::currentThreadId();
-
-        QHash<Qt::HANDLE, int>::iterator it = d->currentReaders.find(self);
-        if (it != d->currentReaders.end()) {
-            ++it.value();
-            ++d->accessCount;
-            Q_ASSERT_X(d->accessCount > 0, "QReadWriteLock::tryLockForRead()",
-                       "Overflow in lock counter");
-            return true;
-        }
-    }
-
     if (d->accessCount < 0)
         return false;
-    if (d->recursive)
-        d->currentReaders.insert(self, 1);
 
     ++d->accessCount;
     Q_ASSERT_X(d->accessCount > 0, "QReadWriteLock::tryLockForRead()", "Overflow in lock counter");
@@ -230,20 +198,6 @@ bool QReadWriteLock::tryLockForRead(int timeout)
 {
     QMutexLocker lock(&d->mutex);
 
-    Qt::HANDLE self = 0;
-    if (d->recursive) {
-        self = QThread::currentThreadId();
-
-        QHash<Qt::HANDLE, int>::iterator it = d->currentReaders.find(self);
-        if (it != d->currentReaders.end()) {
-            ++it.value();
-            ++d->accessCount;
-            Q_ASSERT_X(d->accessCount > 0, "QReadWriteLock::tryLockForRead()",
-                       "Overflow in lock counter");
-            return true;
-        }
-    }
-
     while (d->accessCount < 0 || d->waitingWriters) {
         ++d->waitingReaders;
         bool success = d->readerWait.wait(&d->mutex, timeout < 0 ? ULONG_MAX : ulong(timeout));
@@ -251,8 +205,6 @@ bool QReadWriteLock::tryLockForRead(int timeout)
         if (!success)
             return false;
     }
-    if (d->recursive)
-        d->currentReaders.insert(self, 1);
 
     ++d->accessCount;
     Q_ASSERT_X(d->accessCount > 0, "QReadWriteLock::tryLockForRead()", "Overflow in lock counter");
@@ -412,15 +364,6 @@ void QReadWriteLock::unlock()
     bool unlocked = false;
     if (d->accessCount > 0) {
         // releasing a read lock
-        if (d->recursive) {
-            Qt::HANDLE self = QThread::currentThreadId();
-            QHash<Qt::HANDLE, int>::iterator it = d->currentReaders.find(self);
-            if (it != d->currentReaders.end()) {
-                if (--it.value() <= 0)
-                    d->currentReaders.erase(it);
-            }
-        }
-
         unlocked = --d->accessCount == 0;
     } else if (d->accessCount < 0 && ++d->accessCount == 0) {
         // released a write lock
diff --git a/src/corelib/thread/qreadwritelock_p.h b/src/corelib/thread/qreadwritelock_p.h
index e57c0e403f..15a6d1f57e 100644
--- a/src/corelib/thread/qreadwritelock_p.h
+++ b/src/corelib/thread/qreadwritelock_p.h
@@ -69,7 +69,6 @@ struct QReadWriteLockPrivate
 
     bool recursive;
     Qt::HANDLE currentWriter;
-    QHash<Qt::HANDLE, int> currentReaders;
 };
 
 QT_END_NAMESPACE
diff --git a/src/corelib/thread/qthread.h b/src/corelib/thread/qthread.h
index 58755b9625..bfc469583d 100644
--- a/src/corelib/thread/qthread.h
+++ b/src/corelib/thread/qthread.h
@@ -106,16 +106,8 @@ public:
     static void usleep(unsigned long);
 
 Q_SIGNALS:
-    void started(
-#if !defined(Q_QDOC)
-      QPrivateSignal
-#endif
-    );
-    void finished(
-#if !defined(Q_QDOC)
-      QPrivateSignal
-#endif
-    );
+    void started(QPrivateSignal);
+    void finished(QPrivateSignal);
 
 protected:
     virtual void run();
diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp
index 996ed1779d..77093c9cf1 100644
--- a/src/corelib/thread/qthread_unix.cpp
+++ b/src/corelib/thread/qthread_unix.cpp
@@ -400,7 +400,7 @@ int QThread::idealThreadCount() Q_DECL_NOTHROW
         cores = (int)psd.psd_proc_cnt;
     }
 #elif defined(Q_OS_BSD4)
-    // FreeBSD, OpenBSD, NetBSD, BSD/OS, Mac OS X
+    // FreeBSD, OpenBSD, NetBSD, BSD/OS, OS X, iOS
     size_t len = sizeof(cores);
     int mib[2];
     mib[0] = CTL_HW;