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The experiments studied by UpStare are now available, based on version UPSTARE_RELEASE_0-11-6.

UpStare version UPSTARE_RELEASE_0-10-9 considerably improves the ability of the patch generator to automatically produce stack transformers and incorporate user-defined stack transformers. It also implements support for blocking system calls in a much more efficient way.

UpStare version UPSTARE_RELEASE_0-9-12 fixes a critical issue in the runtime in determining which children have died and should be ignored when coordinating an update with children. It also handles as non-blocking file descriptors created with open() and pipe(), and calls to select() with a pointer (possibly set to NULL) timeout argument that would block indefinitely.

With these changes the system can update PostgreSQL while multiple clients are connected to it.

UpStare version UPSTARE_RELEASE_0-9-10 improves the ability of the patch generator to correctly determine dependencies between struct/unions defining fields which are arrays of a size computed at compile-time.