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Diffstat (limited to 'src/corelib/tools/qvector.qdoc')
| -rw-r--r-- | src/corelib/tools/qvector.qdoc | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/corelib/tools/qvector.qdoc b/src/corelib/tools/qvector.qdoc index c1b5054f93..8765b7fbd6 100644 --- a/src/corelib/tools/qvector.qdoc +++ b/src/corelib/tools/qvector.qdoc @@ -173,6 +173,24 @@ For a detailed discussion comparing Qt containers with each other and with STL containers, see \l {Understand the Qt Containers}. + \section1 Maximum size and out-of-memory conditions + + The current version of QVector is limited to just under 2 GB (2^31 bytes) + in size. The exact value is architecture-dependent, since it depends on the + overhead required for managing the data block, but is no more than 32 + bytes. The number of elements that can be stored in a QVector is that size + divided by the size of each element. + + In case memory allocation fails, QVector will use the \l Q_CHECK_PTR macro, + which will throw a \c std::bad_alloc exception if the application is being + compiled with exception support. If exceptions are disabled, then running + out of memory is undefined behavior. + + Note that the operating system may impose further limits on applications + holding a lot of allocated memory, especially large, contiguous blocks. + Such considerations, the configuration of such behavior or any mitigation + are outside the scope of the Qt API. + \sa QVectorIterator, QMutableVectorIterator, QList, QLinkedList */ @@ -251,6 +269,11 @@ The value type of \c InputIterator must be convertible to \c T. */ +/*! + \fn template <typename T> QVector<T>::QVector(QArrayDataPointerRef<T> ref) + \internal +*/ + /*! \fn template <typename T> QVector<T>::~QVector() Destroys the vector. |