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feat(scheduler-sim-live-allocation): add unsatisfiable-cache callback seam (task 1.1)

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Adds a NULL-by-default lookup/populate callback seam on xce_sched_core_t,
mirroring cache_clear_cb's proven shape, so the allocation dispatch
chokepoint can consult the unsatisfiable-resreq cache without a
normal-mode-only field access in shared code. Adapters live in
alloc_cache.c and are registered only during normal-mode startup;
simulation mode leaves both callbacks NULL and always computes fresh.

Adds the scheduler-sim-live-allocation spec (requirements/design/
research/tasks) as the planning artifact this and subsequent tasks
implement against.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RLSNJhNoULvVcUhXEFafQC
This commit is contained in:
Rongsong Shen 2026-09-18 10:14:04 +00:00
parent 487e7b9419
commit 89297dc825
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18
src/scheduler/include/sched/alloc_cache.h
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@ -141,4 +141,22 @@ extern void cache_clear(xce_scheduler_t* sched);
*/
extern void xce_alloc_cache_clear_cb(xce_sched_core_t* core);
/*
* xce_alloc_cache_lookup_cb / xce_alloc_cache_populate_cb - the
* xce_unsatisfiable_lookup_cb_t / xce_unsatisfiable_populate_cb_t (core.h)
* adapters for cache_lookup()/cache_insert() above (scheduler-sim-live-
* allocation spec, task 1.1, Req 5.2). Registered on the real
* xce_scheduler_t's core via direct field assignment in main.c's
* normal-mode-only startup branch, alongside xce_alloc_cache_clear_cb()
* just above. See alloc_cache.c's own doc comment on these functions for
* the full rationale, including why they live here rather than in
* driver.c.
*/
extern int xce_alloc_cache_lookup_cb(xce_sched_core_t* core,
xce_sched_obj_t* obj,
int* out_reason_category);
extern void xce_alloc_cache_populate_cb(xce_sched_core_t* core,
xce_sched_obj_t* obj,
int reason_category);
#endif