Inquiry sources questioned the approach, saying the government has at times been "hostile and difficult", blocking the release of information and delivering documents late.
For implementers, the locking model adds a fair amount of non-trivial internal bookkeeping. Every operation must check lock state, readers must be tracked, and the interplay between locks, cancellation, and error states creates a matrix of edge cases that must all be handled correctly.
，这一点在服务器推荐中也有详细论述
A Department of Health and Social Care spokeswoman said the meeting on Tuesday was "constructive" and the government would "continue engagement through the summer with the aim of preventing further disruption to the NHS and patients".
Photograph: Simon Hill