diff options
Diffstat (limited to 'src/qml/jsruntime/qv4mathobject.cpp')
| -rw-r--r-- | src/qml/jsruntime/qv4mathobject.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/qml/jsruntime/qv4mathobject.cpp b/src/qml/jsruntime/qv4mathobject.cpp index 6280b7c392..c5cd77fc14 100644 --- a/src/qml/jsruntime/qv4mathobject.cpp +++ b/src/qml/jsruntime/qv4mathobject.cpp @@ -46,6 +46,9 @@ #include <qmath.h> #include <qnumeric.h> +#include <QtCore/qdatetime.h> +#include <QtCore/qthreadstorage.h> + using namespace QV4; static const double qt_PI = 2.0 * ::asin(1.0); @@ -278,8 +281,14 @@ ReturnedValue MathObject::method_pow(SimpleCallContext *context) return Encode(qSNaN()); } -ReturnedValue MathObject::method_random(SimpleCallContext *) +Q_GLOBAL_STATIC(QThreadStorage<bool *>, seedCreatedStorage); + +ReturnedValue MathObject::method_random(SimpleCallContext *context) { + if (!seedCreatedStorage()->hasLocalData()) { + qsrand(QTime(0,0,0).msecsTo(QTime::currentTime()) ^ reinterpret_cast<quintptr>(context)); + seedCreatedStorage()->setLocalData(new bool(true)); + } return Encode(qrand() / (double) RAND_MAX); } |