diff options
| -rw-r--r-- | src/corelib/thread/qthread_p.h | 2 | ||||
| -rw-r--r-- | src/corelib/thread/qthreadstorage.cpp | 97 | ||||
| -rw-r--r-- | tests/benchmarks/benchmarks.pro | 3 | ||||
| -rw-r--r-- | tests/benchmarks/qthreadstorage/qthreadstorage.pro | 6 | ||||
| -rw-r--r-- | tests/benchmarks/qthreadstorage/tst_qthreadstorage.cpp | 124 |
5 files changed, 183 insertions, 49 deletions
diff --git a/src/corelib/thread/qthread_p.h b/src/corelib/thread/qthread_p.h index af68434..3db308f 100644 --- a/src/corelib/thread/qthread_p.h +++ b/src/corelib/thread/qthread_p.h @@ -202,7 +202,7 @@ public: QStack<QEventLoop *> eventLoops; QPostEventList postEventList; bool canWait; - QMap<int, void *> tls; + QVector<void *> tls; QMutex mutex; diff --git a/src/corelib/thread/qthreadstorage.cpp b/src/corelib/thread/qthreadstorage.cpp index 8b1f255..a7d53d0 100644 --- a/src/corelib/thread/qthreadstorage.cpp +++ b/src/corelib/thread/qthreadstorage.cpp @@ -71,27 +71,32 @@ void qtsDebug(const char *fmt, ...) # define DEBUG_MSG if(false)qDebug #endif -static QBasicAtomicInt idCounter = Q_BASIC_ATOMIC_INITIALIZER(INT_MAX); Q_GLOBAL_STATIC(QMutex, mutex) -typedef QMap<int, void (*)(void *)> DestructorMap; +typedef QVector<void (*)(void *)> DestructorMap; Q_GLOBAL_STATIC(DestructorMap, destructors) QThreadStorageData::QThreadStorageData(void (*func)(void *)) - : id(idCounter.fetchAndAddRelaxed(-1)) { QMutexLocker locker(mutex()); - destructors()->insert(id, func); - + DestructorMap *destr = destructors(); + for (id = 0; id < destr->count(); id++) { + if (destr->at(id) == 0) + break; + } + if (id == destr->count()) { + destr->append(func); + } else { + (*destr)[id] = func; + } DEBUG_MSG("QThreadStorageData: Allocated id %d, destructor %p", id, func); } QThreadStorageData::~QThreadStorageData() { + DEBUG_MSG("QThreadStorageData: Released id %d", id); QMutexLocker locker(mutex()); if (destructors()) - destructors()->remove(id); - - DEBUG_MSG("QThreadStorageData: Released id %d", id); + (*destructors())[id] = 0; } void **QThreadStorageData::get() const @@ -101,14 +106,17 @@ void **QThreadStorageData::get() const qWarning("QThreadStorage::get: QThreadStorage can only be used with threads started with QThread"); return 0; } - QMap<int, void *>::const_iterator it = data->tls.constFind(id); + QVector<void *> &tls = data->tls; + if (tls.size() <= id) + tls.resize(id + 1); + void **v = &tls[id]; + DEBUG_MSG("QThreadStorageData: Returning storage %d, data %p, for thread %p", id, - it != data->tls.end() ? it.value() : 0, + *v, data->thread); - // const_cast below is a bit evil - but we have to make sure not to detach here - // otherwise we'll go bonkers in oom situations - return it != data->tls.constEnd() && it.value() != 0 ? const_cast<void **>(&it.value()) : 0; + + return *v ? v : 0; } void **QThreadStorageData::set(void *p) @@ -118,51 +126,46 @@ void **QThreadStorageData::set(void *p) qWarning("QThreadStorage::set: QThreadStorage can only be used with threads started with QThread"); return 0; } + QVector<void *> &tls = data->tls; + if (tls.size() <= id) + tls.resize(id + 1); + + void *&value = tls[id]; + // delete any previous data + if (value != 0) { + DEBUG_MSG("QThreadStorageData: Deleting previous storage %d, data %p, for thread %p", + id, + value, + data->thread); - QMap<int, void *>::iterator it = data->tls.find(id); - if (it != data->tls.end()) { - // delete any previous data - if (it.value() != 0) { - DEBUG_MSG("QThreadStorageData: Deleting previous storage %d, data %p, for thread %p", - id, - it.value(), - data->thread); - - void *q = it.value(); - it.value() = 0; - - QMutexLocker locker(mutex()); - void (*destructor)(void *) = destructors()->value(id); - locker.unlock(); + QMutexLocker locker(mutex()); + void (*destructor)(void *) = destructors()->value(id); + locker.unlock(); - destructor(q); - } + void *q = value; + value = 0; - // store new data - it.value() = p; - DEBUG_MSG("QThreadStorageData: Set storage %d for thread %p to %p", id, data->thread, p); - } else { - it = data->tls.insert(id, p); - DEBUG_MSG("QThreadStorageData: Inserted storage %d, data %p, for thread %p", id, p, data->thread); + destructor(q); } - return &it.value(); + // store new data + value = p; + DEBUG_MSG("QThreadStorageData: Set storage %d for thread %p to %p", id, data->thread, p); + return &value; } void QThreadStorageData::finish(void **p) { - QMap<int, void *> *tls = reinterpret_cast<QMap<int, void *> *>(p); + QVector<void *> *tls = reinterpret_cast<QVector<void *> *>(p); if (!tls || tls->isEmpty() || !mutex()) return; // nothing to do DEBUG_MSG("QThreadStorageData: Destroying storage for thread %p", QThread::currentThread()); - QMap<int, void *>::iterator it = tls->begin(); - while (it != tls->end()) { - int id = it.key(); - void *q = it.value(); - it.value() = 0; - ++it; + for(int i = tls->size() - 1; i >= 0; i--) { + void *&value = (*tls)[i]; + void *q = value; + value = 0; if (!q) { // data already deleted @@ -170,16 +173,16 @@ void QThreadStorageData::finish(void **p) } QMutexLocker locker(mutex()); - void (*destructor)(void *) = destructors()->value(id); + void (*destructor)(void *) = destructors()->value(i); locker.unlock(); if (!destructor) { if (QThread::currentThread()) qWarning("QThreadStorage: Thread %p exited after QThreadStorage %d destroyed", - QThread::currentThread(), id); + QThread::currentThread(), i); continue; } - destructor(q); + destructor(q); //crash here might mean the thread exited after qthreadstorage was destroyed } tls->clear(); } diff --git a/tests/benchmarks/benchmarks.pro b/tests/benchmarks/benchmarks.pro index bffa009..bb20dcf 100644 --- a/tests/benchmarks/benchmarks.pro +++ b/tests/benchmarks/benchmarks.pro @@ -36,7 +36,8 @@ SUBDIRS = containers-associative \ qstringbuilder \ qstylesheetstyle \ qsvgrenderer \ - qtableview + qtableview \ + qthreadstorage diff --git a/tests/benchmarks/qthreadstorage/qthreadstorage.pro b/tests/benchmarks/qthreadstorage/qthreadstorage.pro new file mode 100644 index 0000000..f9c1978 --- /dev/null +++ b/tests/benchmarks/qthreadstorage/qthreadstorage.pro @@ -0,0 +1,6 @@ +load(qttest_p4) +TEMPLATE = app +TARGET = tst_qthreadstorage + +SOURCES += tst_qthreadstorage.cpp + diff --git a/tests/benchmarks/qthreadstorage/tst_qthreadstorage.cpp b/tests/benchmarks/qthreadstorage/tst_qthreadstorage.cpp new file mode 100644 index 0000000..c00bf5a --- /dev/null +++ b/tests/benchmarks/qthreadstorage/tst_qthreadstorage.cpp @@ -0,0 +1,124 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <qtest.h> +#include <QtCore> + +//TESTED_FILES= + +QThreadStorage<int *> dummy[8]; + +QThreadStorage<QString *> tls1; + +class tst_QThreadStorage : public QObject +{ + Q_OBJECT + +public: + tst_QThreadStorage(); + virtual ~tst_QThreadStorage(); + +public slots: + void init(); + void cleanup(); + +private slots: + void construct(); + void get(); + void set(); +}; + +tst_QThreadStorage::tst_QThreadStorage() +{ +} + +tst_QThreadStorage::~tst_QThreadStorage() +{ +} + +void tst_QThreadStorage::init() +{ + dummy[1].setLocalData(new int(5)); + dummy[2].setLocalData(new int(4)); + dummy[3].setLocalData(new int(3)); + tls1.setLocalData(new QString()); +} + +void tst_QThreadStorage::cleanup() +{ +} + +void tst_QThreadStorage::construct() +{ + QBENCHMARK { + QThreadStorage<int *> ts; + } +} + + +void tst_QThreadStorage::get() +{ + QThreadStorage<int *> ts; + ts.setLocalData(new int(45)); + + int count = 0; + QBENCHMARK { + int *i = ts.localData(); + count += *i; + } + ts.setLocalData(0); +} + +void tst_QThreadStorage::set() +{ + QThreadStorage<int *> ts; + + int count = 0; + QBENCHMARK { + ts.setLocalData(new int(count)); + count++; + } + ts.setLocalData(0); +} + + +QTEST_MAIN(tst_QThreadStorage) +#include "tst_qthreadstorage.moc" |