starkernel: item 3.3 -- behaviour enumeration and dispatch
Punch list §25 item 3.3 complete. StadiumBehaviour (stadium.h) enumerates exactly the four tags §18.3 already names -- MIGRATE, DELIVER, EXPIRE, COOL -- mapped from §17.1's patron table: blocks->MIGRATE, messages->DELIVER, ACLs->EXPIRE, words and VMs both->COOL. Nothing invented; the tag set and mapping were already in the document. stadium_dispatch(cell_index, behaviour) dispatches on the tag only, never asks what kind of patron departed. Handlers are stubs -- the real actions belong to subsystems not yet migrated onto the Stadium (Phase 4). Nothing calls stadium_dispatch() yet; item 3.5 is its first consumer. The switch is exhaustive with no default case, making §13's "closed enumeration, fixed at build time" a compiler-enforced property under this project's -Wall -Werror rather than just prose. Verified live: temporarily deleted the COOL case, rebuild failed with error: enumeration value 'STADIUM_BEHAVIOUR_COOL' not handled in switch [-Werror=switch], restored it, confirmed clean again. The header's behaviour field stays uint8_t, not the enum type itself, since C does not guarantee an enum's underlying type and that field's offset is load-bearing for item 3.1's validated 64-byte layout. Verified: three-architecture boot (amd64, aarch64, riscv64), all reaching ok> with identical dict_hash=0x3d4e1daf289da94f matching the item-3.2 baseline. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Robert Allan James
co-authored by
Claude Sonnet 5
Claude Sonnet 5
parent
eb0fd4fffa
commit
378d688898
@@ -2739,8 +2739,40 @@ document and committing that amendment as its own item.*
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> **Explicitly not built here, reported per §25.0 rule 3:** per-VM free lists (§22.3, "each
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> VM holds its own free-list head index into the global array") — those get granted when
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> Hera assigns a VM its quota, which is not this item's scope.
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- [ ] **3.3 — Behaviour enumeration and dispatch.** Closed tag set fixed at build time.
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- [x] **3.3 — Behaviour enumeration and dispatch.** Closed tag set fixed at build time.
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Enumerate behaviours, never patron kinds. *Refs:* §13, §18.3.
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> **DONE 2026-08-04.** `StadiumBehaviour` (`stadium.h`) enumerates exactly the four tags
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> §18.3 already names — `MIGRATE`, `DELIVER`, `EXPIRE`, `COOL` — mapped from §17.1's
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> patron table: blocks→MIGRATE, messages→DELIVER, ACLs→EXPIRE, words and VMs both→COOL
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> (§18.3 explicitly: "a VM's behaviour tag is COOL, the same tag a word carries"). Nothing
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> invented — the tag set and mapping were already in the document.
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>
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> `stadium_dispatch(cell_index, behaviour)` (`stadium.c`) dispatches on the tag only —
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> never asks what kind of patron departed, per §3/§18.3. Handlers are stubs (console log
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> only): the real migrate/deliver/expire/cool actions belong to subsystems not yet
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> migrated onto the Stadium (Phase 4, §25.5). Nothing calls `stadium_dispatch()` yet
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> either — item 3.5 is its first consumer.
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>
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> **The closedness requirement is now a compiler-enforced property, not just prose:** the
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> switch in `stadium_dispatch()` is exhaustive with no `default` case. Verified this is
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> real, not decorative — temporarily deleted the `COOL` case, rebuilt, got
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> `error: enumeration value 'STADIUM_BEHAVIOUR_COOL' not handled in switch
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> [-Werror=switch]`, restored it, confirmed clean again. Under this project's
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> `-Wall -Werror`, a fifth behaviour tag added without updating dispatch is now a build
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> failure, not a silent gap — the strongest available reading of §13's "closed enumeration,
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> fixed at build time."
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>
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> The header's `behaviour` field stays `uint8_t`, not the enum type itself: C does not
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> guarantee an enum's underlying type, and that field's offset is load-bearing for the
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> exact 64-byte layout item 3.1 validated. Documented as holding `StadiumBehaviour` values
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> cast to `uint8_t`. No new Kconfig symbol — this is a closed code set, not a tunable
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> number.
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>
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> **Regression: clean.** All three architectures boot to `ok>` with identical
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> `dict_hash=0x3d4e1daf289da94f`, matching the item-3.2 baseline — amd64
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> (`logs/20260804-170226`), aarch64 (`logs/20260804-170309`), riscv64
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> (`logs/20260804-170407`).
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- [ ] **3.4 — Density ranking.** Heat ÷ mass, read not computed. *Refs:* §19.2, §19.3.
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- [ ] **3.5 — Admission and eviction.** Admit if denser than the least dense resident.
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*Refs:* §19.3.
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@@ -1,5 +1,5 @@
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# Capsule Block Manifest — Auto-generated
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<!-- Generated by mkcapsule --manifest 2026-08-04T20:45:23Z -->
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<!-- Generated by mkcapsule --manifest 2026-08-04T21:03:52Z -->
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<!-- DO NOT EDIT — re-run mkcapsule --manifest to refresh. -->
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<!-- Hand-written justifications and immutability notes live -->
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@@ -0,0 +1,59 @@
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|
||||
2,20000,10000,0,0,173,5,44,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
3,30000,10000,0,0,184,6,60,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
4,40000,10000,0,0,174,8,71,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
5,50000,10000,0,0,150,9,78,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
6,60000,10000,0,0,159,11,73,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
7,70000,10000,0,0,188,15,71,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
8,80000,10000,0,0,214,16,83,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
9,90000,10000,0,0,216,19,82,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
10,100000,10000,0,0,222,21,84,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
11,110000,10000,0,0,207,23,86,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
12,120000,10000,0,0,189,26,83,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
13,130000,10000,0,0,221,28,80,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
14,140000,10000,0,0,204,29,83,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
15,150000,10000,0,0,203,30,82,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
16,160000,10000,0,0,201,32,83,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
17,170000,10000,0,0,190,34,86,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
18,180000,10000,0,0,170,35,73,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
19,190000,10000,0,0,154,28,44,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
20,200000,10000,0,0,154,28,41,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
21,210000,10000,0,0,153,32,39,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
22,220000,10000,0,0,167,35,42,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
23,230000,10000,0,0,176,37,41,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
24,240000,10000,0,0,175,37,39,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
25,250000,10000,0,0,196,38,37,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
26,260000,10000,0,0,192,41,37,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
27,270000,10000,0,0,158,40,38,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
28,280000,10000,0,0,158,40,35,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
29,290000,10000,0,0,164,41,37,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
30,300000,10000,0,0,154,43,39,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
31,310000,10000,0,0,172,46,35,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
32,320000,10000,0,0,180,49,34,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
33,330000,10000,0,0,145,51,35,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
34,340000,10000,0,0,203,53,37,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
35,350000,10000,0,0,154,55,39,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
36,360000,10000,0,0,144,57,37,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
37,370000,10000,0,0,144,57,35,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
38,380000,10000,0,0,132,57,34,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
39,390000,10000,0,0,180,57,32,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
40,400000,10000,0,0,220,63,29,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
41,410000,10000,0,0,215,64,28,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
42,420000,10000,0,0,208,68,29,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
43,430000,10000,0,0,177,72,27,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
44,440000,10000,0,0,199,77,28,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
45,450000,10000,0,0,223,82,26,4096,30,0,0,0,65536,0,0,65536,0,0
|
||||
46,460000,10000,0,0,202,85,24,4096,67,0,0,0,65536,0,0,65536,0,0
|
||||
47,470000,10000,0,0,218,91,25,4096,198,0,0,0,65536,0,0,65536,0,0
|
||||
48,480000,10000,0,0,221,92,26,4096,350,0,0,0,65536,0,0,65536,0,0
|
||||
49,490000,10000,0,0,225,97,26,4096,528,0,0,0,65536,0,0,65536,0,0
|
||||
50,500000,10000,0,0,214,100,27,4096,694,0,0,0,65536,0,0,65536,0,0
|
||||
51,510000,10000,0,0,227,102,28,4096,883,0,0,0,65536,0,0,65536,0,0
|
||||
52,520000,10000,0,0,208,102,29,4096,1043,0,0,0,65536,0,0,65536,0,0
|
||||
53,530000,10000,0,0,207,102,30,4096,1202,0,0,0,65536,0,0,65536,0,0
|
||||
54,540000,10000,0,0,200,102,31,4096,1319,0,0,0,65536,0,0,65536,0,0
|
||||
55,550000,10000,0,0,205,103,32,4096,1464,0,0,0,65536,0,0,65536,0,0
|
||||
56,560000,10000,0,0,211,103,32,4096,1620,0,0,0,65536,0,0,65536,0,0
|
||||
57,570000,10000,0,0,193,110,33,4096,1712,0,0,0,65536,0,0,65536,0,0
|
||||
58,580000,10000,0,0,190,5,67,4096,1775,0,0,0,65536,0,0,65536,0,0
|
||||
|
@@ -63,7 +63,11 @@ typedef struct {
|
||||
* enforcement of that bound is item 3.5's scope, not this one's. */
|
||||
uint16_t mass; /* offset 28 -- cells this patron occupies (§19.2) */
|
||||
uint8_t flags; /* offset 30 -- bit 0 = pin; remaining bits reserved */
|
||||
uint8_t behaviour; /* offset 31 -- code field, closed enumeration (§18.3) */
|
||||
uint8_t behaviour; /* offset 31 -- code field. Valid values are StadiumBehaviour (§18.3)
|
||||
* tags cast to uint8_t -- kept as uint8_t rather than the enum type
|
||||
* itself since C does not guarantee an enum's underlying type, and
|
||||
* this field's offset is load-bearing for the 64-byte layout item
|
||||
* 3.1 validated. */
|
||||
uint8_t payload[32]; /* offset 32 -- inline payload, used when mass == 1 */
|
||||
} StadiumPatronHeader;
|
||||
|
||||
@@ -138,6 +142,42 @@ StadiumCell *stadium_cells(void);
|
||||
*/
|
||||
uint8_t *stadium_header_bitmap(void);
|
||||
|
||||
/*
|
||||
* StadiumBehaviour - the closed code-field enumeration (FABRIC.md §13, §18.3).
|
||||
* The engine dispatches on this tag and never asks a patron what kind it is
|
||||
* -- §3's entire point. Two patrons may share a tag: a VM's tag is COOL, the
|
||||
* same tag a word carries (§18.3). Mapped from §17.1's patron table:
|
||||
*
|
||||
* MIGRATE -- blocks: reap event is migration back to Artemis (§17.2)
|
||||
* DELIVER -- messages: reap event is delivery
|
||||
* EXPIRE -- ACLs: reap event is TTL expiry
|
||||
* COOL -- words and VMs: reap event is cooling off the floor
|
||||
*
|
||||
* Closed and fixed at build time -- see stadium_dispatch()'s exhaustive
|
||||
* switch for how the compiler enforces that.
|
||||
*/
|
||||
typedef enum {
|
||||
STADIUM_BEHAVIOUR_MIGRATE = 0,
|
||||
STADIUM_BEHAVIOUR_DELIVER,
|
||||
STADIUM_BEHAVIOUR_EXPIRE,
|
||||
STADIUM_BEHAVIOUR_COOL
|
||||
} StadiumBehaviour;
|
||||
|
||||
/*
|
||||
* stadium_dispatch - Calls the behaviour handler for a patron's code field.
|
||||
* The engine calls this at reap and never asks what kind of patron departed
|
||||
* (§3, §18.3) -- only cell_index and behaviour cross this boundary.
|
||||
*
|
||||
* Handlers are stubs today: the real migrate-to-Artemis / deliver / expire /
|
||||
* cool actions belong to their own subsystems, which have not been migrated
|
||||
* onto the Stadium yet (Phase 4, §25.5). Nothing calls stadium_dispatch()
|
||||
* yet either -- that begins with item 3.5 (admission and eviction).
|
||||
*
|
||||
* @param cell_index Index into the Stadium of the patron header dispatching.
|
||||
* @param behaviour Which of the closed tag set to invoke.
|
||||
*/
|
||||
void stadium_dispatch(size_t cell_index, StadiumBehaviour behaviour);
|
||||
|
||||
#endif /* __STARKERNEL__ */
|
||||
|
||||
#endif /* STARKERNEL_VM_STADIUM_H */
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -120,4 +120,34 @@ uint8_t *stadium_header_bitmap(void) {
|
||||
return stadium_bitmap;
|
||||
}
|
||||
|
||||
/*
|
||||
* Exhaustive switch, no default: §13/§18.3 require the behaviour set to be
|
||||
* closed and fixed at build time. With -Wall -Werror, omitting a case here
|
||||
* for a tag that exists is a build failure, not a silent gap -- the compiler
|
||||
* enforces closedness, not just this comment.
|
||||
*
|
||||
* Handlers are stubs: the real actions belong to subsystems not yet migrated
|
||||
* onto the Stadium (Phase 4, §25.5). Nothing calls this yet either -- item
|
||||
* 3.5 is the first consumer.
|
||||
*/
|
||||
void stadium_dispatch(size_t cell_index, StadiumBehaviour behaviour) {
|
||||
console_puts("Stadium: dispatch cell=");
|
||||
console_put_u64((uint64_t)cell_index);
|
||||
console_puts(" behaviour=");
|
||||
switch (behaviour) {
|
||||
case STADIUM_BEHAVIOUR_MIGRATE:
|
||||
console_println("MIGRATE (stub)");
|
||||
break;
|
||||
case STADIUM_BEHAVIOUR_DELIVER:
|
||||
console_println("DELIVER (stub)");
|
||||
break;
|
||||
case STADIUM_BEHAVIOUR_EXPIRE:
|
||||
console_println("EXPIRE (stub)");
|
||||
break;
|
||||
case STADIUM_BEHAVIOUR_COOL:
|
||||
console_println("COOL (stub)");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* __STARKERNEL__ */
|
||||
Reference in New Issue
Block a user