diff options
Diffstat (limited to 'doc/src/threads.qdoc')
| -rw-r--r-- | doc/src/threads.qdoc | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/doc/src/threads.qdoc b/doc/src/threads.qdoc index e3da0d4..8469f51 100644 --- a/doc/src/threads.qdoc +++ b/doc/src/threads.qdoc @@ -278,7 +278,7 @@ \e{reentrant} function is not always \e{thread-safe}. By extension, a class is said to be \e{reentrant} if its member - functions can be called safely from multiple threads as long as + functions can be called safely from multiple threads, as long as each thread uses a \e{different} instance of the class. The class is \e{thread-safe} if its member functions can be called safely from multiple threads, even if all the threads use the \e{same} @@ -325,14 +325,14 @@ declared with the \c mutable qualifier because we need to lock and unlock the mutex in \c value(), which is a const function. - Most Qt classes are \e{reentrant}, but they are not made + Many Qt classes are \e{reentrant}, but they are not made \e{thread-safe}, because making them thread-safe would incur the extra overhead of repeatedly locking and unlocking a QMutex. For example, QString is reentrant but not thread-safe. You can safely access \e{different} instances of QString from multiple threads - simultaneously, but you can't access the \e{same} instance of - QString from multiple threads simultaneously (unless you protect - the accesses yourself with a QMutex). + simultaneously, but you can't safely access the \e{same} instance + of QString from multiple threads simultaneously (unless you + protect the accesses yourself with a QMutex). Some Qt classes and functions are thread-safe. These are mainly the thread-related classes (e.g. QMutex) and fundamental functions @@ -345,7 +345,7 @@ standardized. POSIX uses definitions of reentrant and thread-safe that are somewhat different for its C APIs. When using other object-oriented C++ class libraries with Qt, be sure the - definitions in use are understood. + definitions are understood. \section1 Threads and QObjects |