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()
76     computeTransformImpl(mHead, outMatrix);  in computeCurrentTransform()
80     if (!mHead->next) {  in pushCommon()
83         nextFrame->prev = mHead;  in pushCommon()
84         mHead->next = nextFrame;  in pushCommon()
86     mHead = mHead->next;  in pushCommon()
87     mHead->pendingDirty.setEmpty();  in pushCommon()
92     mHead->type = TransformRenderNode;  in pushTransform()
93     mHead->renderNode = transform;  in pushTransform()
98     mHead->type = TransformMatrix4;  in pushTransform()
99     mHead->matrix4 = transform;  in pushTransform()
103     LOG_ALWAYS_FATAL_IF(mHead->prev == mHead, "Cannot pop the root frame!");  in popTransform()
104     DirtyStack* dirtyFrame = mHead;  in popTransform()
105     mHead = mHead->prev;  in popTransform()
114         mHead->pendingDirty.join(dirtyFrame->pendingDirty);  in popTransform()
136     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", m…  in finish()
238     *totalDirty = mHead->pendingDirty;  in finish()
240     mHead->pendingDirty.setEmpty();  in finish()