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P7 exit gate 1 asks for integration green "under Magma push and split". Until now it was not
merely unmet, it was UNMEASURABLE: every arm of mgl_itest_register_split_arms hardcoded
MOBILEGL_BACKEND_TYPE=DirectGLES (:2002/:2025/:2031) and MGL_ITEST_MAGMA_WIRE_ENVIRONMENT
hardcoded MOBILEGL_TRANSPORT=inproc (:2456), so the shared integration-split / -spawn / -tcp
labels held ZERO DirectVulkan entries and the 73 integration-magma-split cases only ever ran in
one process.
The registration macro now takes the backend as its first argument; the old name is a thin
wrapper, so all 32 call sites are untouched and every DirectGLES name, label and private log
path is byte-for-byte what it was. Two tiers come out of it, and the CMake comment states both:
* GATED - integration-magma-{split,spawn,tcp}. The six hand-laid Magma lanes (Fm, Buffers,
RunAhead, Caches, NamedBlit, P5fRsp) grow arms through one shared shape macro; the inproc
arm keeps its names, its labels and its log paths, so the CI steps and the two magma_*
checker scripts that name them by hand keep working unchanged.
* INFORMATIONAL - integration-magma-all-{split,spawn,tcp}, in no gating step. Every scenario
the split arms run, on Magma, on all three transports, generated by REPLAYING the macro's
recorded call list - so a scenario added to the split arms tomorrow joins the Magma census
the same day. Its job is to be able to go red while CI stays green; a case moves up into the
gated tier with the commit that retires its blocker.
The label spellings are chosen against ctest -L's regex (ID-131 again): the tier word goes in
the MIDDLE, because integration-magma-spawn-all WOULD have been selected by
-L integration-magma-spawn and pulled ~100 expected-red entries into a gated lane. Sub-labels
mirror it: the inproc arm keeps integration-magma-buffers, the others put the arm word first.
MagmaRunAheadScenario and MagmaWireCacheScenario stay on the inproc arm alone, and that is
MEASURED rather than assumed: with all three arms registered, all 21 entries red on spawn and
tcp with no Fatal in either role log - the first arms its hold through
ServerLoopInstance().SetBeforeRetireHookForTesting, a hook on THIS process's server loop, and
the second asserts transportName == "inproc" in its SetUp. Both are named in the CMakeLists and
in spawn_lane_parity.py rather than allowed to widen a tolerance.
split_log_paths.py's is_split prefixes gain DirectVulkan.Spawn. / .Tcp. - on those arms two
processes append to one path, so a shared log does not merely blur attribution, it interleaves
two sessions. spawn_lane_parity.py gains the Magma dimension, normalising only the ARM segment:
RunAhead.Credit1. and .Credit3. are two entries of one case and a tail-stripping normaliser
would fold them together and then report an equal-sized set that had lost one.
Measured on this tree (lavapipe): magma-split 73 unchanged and green, magma-spawn 52/52,
magma-tcp 52/52, the three informational lanes 102 each, GLES split 186 / spawn 102 / tcp 104
all unchanged and green. G14 against ~/w7/p7-before: 4155 to 4565, removed 0, added 410.