48     mHead = mAllocator.create_trivial<DirtyStack>();  in DamageAccumulator()
49     memset(mHead, 0, sizeof(DirtyStack));  in DamageAccumulator()
51     mHead->prev = mHead;  in DamageAccumulator()
52     mHead->type = TransformNone;  in DamageAccumulator()
77     computeTransformImpl(mHead, outMatrix);  in computeCurrentTransform()
81     if (!mHead->next) {  in pushCommon()
84         nextFrame->prev = mHead;  in pushCommon()
85         mHead->next = nextFrame;  in pushCommon()
87     mHead = mHead->next;  in pushCommon()
88     mHead->pendingDirty.setEmpty();  in pushCommon()
93     mHead->type = TransformRenderNode;  in pushTransform()
94     mHead->renderNode = transform;  in pushTransform()
99     mHead->type = TransformMatrix4;  in pushTransform()
100     mHead->matrix4 = transform;  in pushTransform()
104     LOG_ALWAYS_FATAL_IF(mHead->prev == mHead, "Cannot pop the root frame!");  in popTransform()
105     DirtyStack* dirtyFrame = mHead;  in popTransform()
106     mHead = mHead->prev;  in popTransform()
115             mHead->pendingDirty.join(dirtyFrame->pendingDirty);  in popTransform()
137     mapRect(frame->matrix4, frame->pendingDirty, &mHead->pendingDirty);  in applyMatrix4Transform()
210     mapRect(props, frame->pendingDirty, &mHead->pendingDirty);  in applyRenderNodeTransform()
228     mHead->pendingDirty.join(left, top, right, bottom);  in dirty()
232     *dest = mHead->pendingDirty;  in peekAtDirty()
236     LOG_ALWAYS_FATAL_IF(mHead->prev != mHead, "Cannot finish, mismatched push/pop calls! %p vs. %p",  in finish()
237                         mHead->prev, mHead);  in finish()
239     *totalDirty = mHead->pendingDirty;  in finish()
241     mHead->pendingDirty.setEmpty();  in finish()