diff options
Diffstat (limited to 'src/qml/jsruntime/qv4engine.cpp')
| -rw-r--r-- | src/qml/jsruntime/qv4engine.cpp | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/src/qml/jsruntime/qv4engine.cpp b/src/qml/jsruntime/qv4engine.cpp index d26e991d3f..f5dca60559 100644 --- a/src/qml/jsruntime/qv4engine.cpp +++ b/src/qml/jsruntime/qv4engine.cpp @@ -300,6 +300,9 @@ ExecutionEngine::ExecutionEngine(QJSEngine *jsEngine) if (ok && envMaxGCStackSize > 0) m_maxGCStackSize = envMaxGCStackSize; + // We allocate guard pages around our stacks. + const size_t guardPages = 2 * WTF::pageSize(); + memoryManager = new QV4::MemoryManager(this); if (maxCallDepth == -1) { @@ -327,9 +330,9 @@ ExecutionEngine::ExecutionEngine(QJSEngine *jsEngine) // reserve space for the JS stack // we allow it to grow to a bit more than m_maxJSStackSize, as we can overshoot due to ScopedValues // allocated outside of JIT'ed methods. - *jsStack = WTF::PageAllocation::allocate(m_maxJSStackSize + 256*1024, WTF::OSAllocator::JSVMStackPages, - /* writable */ true, /* executable */ false, - /* includesGuardPages */ true); + *jsStack = WTF::PageAllocation::allocate( + m_maxJSStackSize + 256*1024 + guardPages, WTF::OSAllocator::JSVMStackPages, + /* writable */ true, /* executable */ false, /* includesGuardPages */ true); jsStackBase = (Value *)jsStack->base(); #ifdef V4_USE_VALGRIND VALGRIND_MAKE_MEM_UNDEFINED(jsStackBase, m_maxJSStackSize + 256*1024); @@ -337,9 +340,9 @@ ExecutionEngine::ExecutionEngine(QJSEngine *jsEngine) jsStackTop = jsStackBase; - *gcStack = WTF::PageAllocation::allocate(m_maxGCStackSize, WTF::OSAllocator::JSVMStackPages, - /* writable */ true, /* executable */ false, - /* includesGuardPages */ true); + *gcStack = WTF::PageAllocation::allocate( + m_maxGCStackSize + guardPages, WTF::OSAllocator::JSVMStackPages, + /* writable */ true, /* executable */ false, /* includesGuardPages */ true); { ok = false; @@ -2030,7 +2033,7 @@ void ExecutionEngine::setQmlEngine(QQmlEngine *engine) static void freeze_recursive(QV4::ExecutionEngine *v4, QV4::Object *object) { - if (object->as<QV4::QObjectWrapper>() || object->internalClass()->isFrozen) + if (object->as<QV4::QObjectWrapper>() || object->internalClass()->isFrozen()) return; QV4::Scope scope(v4); |