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feat(scheduler-allocation): rewrap seqjob allocation onto shared iterators

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Restructure seqjob's my_alloc() as a trivial single-bucket case over the
shared xce_alloc_plan_iter_t/xce_host_iter_t contracts, replacing its own
inline worker-collection loop. Guard seqjob_prepare_allocation() to
maxTasks == 1, closing the fan-out gap for the parallel allocator's later
fix (Req 9.1, 4.6).

Export sched_try_alloc_on_host_() from resource.c (drop static/va_list,
plain (worker, sched, ctx) signature) so seqjob calls the real per-host
try-alloc leaf instead of a private duplicate; delete the now-dead
sched_try_alloc_on_hosts() variadic wrapper. Also wires host_iter.c into
the production scheduler_srcs list (task 2.1 only added it to testsuite).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XYdtrEWWZfKRRGED7raEYg
This commit is contained in:
Rongsong Shen 2026-09-04 18:48:49 +00:00
parent 86c86352d1
commit b18c5f780d
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7 changed files with 602 additions and 37 deletions
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src/scheduler/meson.build
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@ -29,6 +29,7 @@ scheduler_srcs = [
'src/plugin.c',
'src/resource.c',
'src/alloc_cache.c',
'src/host_iter.c',
'src/plugins/fcfs.c',
'src/plugins/builtin_fcfs.c',
'src/plugins/seqjob_allocator.c',