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iris-atomic
Commit d344c353 authored by Zhen Zhang's avatar Zhen Zhang
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srv ... token exchange is too complex

parent b2ba5bcb
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srv.v
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......@@ -16,7 +16,7 @@ Definition srv : val :=
Definition wait: val :=
rec: "wait" "p" :=
match: !"p" with
InjR "r" => "p" <- InjR #0 ;; "r"
InjR "r" => "r"
| InjL "_" => "wait" "p"
end.
......@@ -60,38 +60,53 @@ Section proof.
Context `{!heapG Σ, !lockG Σ, !srvG Σ} (N : namespace).
Definition srv_inv
(γx γ1 γ2 γ3: gname) (p: loc)
(γx γ1 γ2 γ3 γ4 γ5: gname) (p: loc)
(Q: val → val → Prop): iProp Σ :=
((∃ (x: val), p ↦ InjRV x ★ own γ1 (Excl ())) ∨
(∃ (x: val), p ↦ InjLV x ★ own γx ((1/2)%Qp, DecAgree x) ★ own γ2 (Excl ())) ∨
(∃ (x y: val), p ↦ InjRV y ★ own γx ((1/2)%Qp, DecAgree x) ★ ■ Q x y ★ own γ3 (Excl ())))%I.
((∃ (x: val), p ↦ InjRV x ★ own γ1 (Excl ()) ★ own γ3 (Excl ())) ∨
(∃ (x y: val), p ↦ InjRV y ★ own γx ((1/2)%Qp, DecAgree x) ★ ■ Q x y ★ own γ2 (Excl ()) ★ own γ3 (Excl ())) ∨
(∃ (x: val), p ↦ InjLV x ★ own γx ((1/2)%Qp, DecAgree x) ★ own γ5 (Excl ()) ★ own γ3 (Excl ())) ∨
(∃ (x: val), p ↦ InjLV x ★ own γx ((1/2)%Qp, DecAgree x) ★ own γ5 (Excl ()) ★ own γ4 (Excl ())))%I.
Lemma srv_inv_timeless γx γ1 γ2 γ3 p Q: TimelessP (srv_inv γx γ1 γ2 γ3 p Q).
Lemma srv_inv_timeless γx γ1 γ2 γ3 γ4 γ5 p Q: TimelessP (srv_inv γx γ1 γ2 γ3 γ4 γ5 p Q).
Proof. apply _. Qed.
Lemma wait_spec (Φ: val → iProp Σ) (Q: val → val → Prop) x γx γ1 γ2 γ3 p:
Lemma wait_spec (Φ: val → iProp Σ) (Q: val → val → Prop) x γx γ1 γ2 γ3 γ4 γ5 p:
heapN ⊥ N →
heap_ctx ★ inv N (srv_inv γx γ1 γ2 γ3 p Q) ★
own γx ((1/2)%Qp, DecAgree x) ★ own γ1 (Excl ()) ★ own γ3 (Excl ()) ★
(∀ y, own γ1 (Excl ()) ★ own γ2 (Excl ()) -★ own γx (1%Qp, DecAgree x) -★ ■ Q x y-★ Φ y)
heap_ctx ★ inv N (srv_inv γx γ1 γ2 γ3 γ4 γ5 p Q) ★
own γx ((1/2)%Qp, DecAgree x) ★ own γ1 (Excl ()) ★ own γ5 (Excl ()) ★
(∀ y, own γ2 (Excl ()) -★ own γx (1%Qp, DecAgree x) -★ ■ Q x y-★ Φ y)
⊢ WP wait #p {{ Φ }}.
Proof.
iIntros (HN) "(#Hh & #Hsrv & Hx & Hempty & Hfinished & HΦ)".
iLöb as "IH".
wp_rec. wp_bind (! #p)%E.
iInv N as ">[Hinv|[Hinv|Hinv]]" "Hclose".
+ iExFalso. iDestruct "Hinv" as (?) "[_ Ho1]".
iInv N as ">[Hinv|[Hinv|[Hinv|Hinv]]]" "Hclose".
- iExFalso. iDestruct "Hinv" as (?) "[_ [Ho1 _]]".
iCombine "Hempty" "Ho1" as "Hempty".
by iDestruct (own_valid with "Hempty") as "%".
+ iDestruct "Hinv" as (x') "(Hp & Hx' & Hissued)".
wp_load.
iVs ("Hclose" with "[Hp Hx' Hissued]").
{ iNext. iRight. iLeft. iExists x'. by iFrame. }
iVsIntro. wp_match. by iApply ("IH" with "Hx Hempty Hfinished").
+ iDestruct "Hinv" as (x' y') "(Hp & Hx' & % & Ho3)".
iCombine "Hfinished" "Ho3" as "Hfinished".
by iDestruct (own_valid with "Hfinished") as "%".
Qed.
by iDestruct (own_valid with "Hempty") as "%".
- iDestruct "Hinv" as (x' y') "(Hp & Hx' & % & Ho2 & Ho3)".
destruct (decide (x = x')) as [->|Hneq].
+ wp_load. iVs ("Hclose" with "[Hp Hx' Ho2 Ho3]").
{ iNext. rewrite /srv_inv. iRight. iLeft. iExists x', y'.
by iFrame. }
iVsIntro. wp_match.
iInv N as ">[Hinv|[Hinv|[Hinv|Hinv]]]" "Hclose".
* admit.
* iDestruct "Hinv" as (x'' y'') "(Hp & Hx'' & % & Ho2 & Ho3)".
iVs ("Hclose" with "[Hp Hempty Ho3]").
{ iNext. rewrite /srv_inv. iLeft.
iExists y''. by iFrame. }
destruct (decide (x' = x'')) as [->|Hneq].
{ iCombine "Hx" "Hx''" as "Hx".
iDestruct (own_update with "Hx") as "==>Hx"; first by apply pair_l_frac_op.
by iApply ("HΦ" with "Ho2 Hx"). }
{ admit. }
* admit.
* admit.
+ admit.
- admit.
- admit.
Admitted.
Lemma mk_srv_spec (f: val) Q:
heapN ⊥ N →
......@@ -102,57 +117,85 @@ Section proof.
wp_let. wp_alloc p as "Hp".
iVs (own_alloc (Excl ())) as (γ1) "Hempty"; first done.
iVs (own_alloc (Excl ())) as (γ2) "Hissued"; first done.
iVs (own_alloc (Excl ())) as (γ3) "Hfinished"; first done.
iVs (own_alloc (Excl ())) as (γ3) "Hblack"; first done.
iVs (own_alloc (Excl ())) as (γ4) "Hwhite"; first done.
iVs (own_alloc (Excl ())) as (γ5) "Hfinished"; first done.
iVs (own_alloc (1%Qp, DecAgree #0)) as (γx) "Hx"; first done.
iVs (inv_alloc N _ (srv_inv γx γ1 γ2 γ3 p Q) with "[Hp Hempty]") as "#?".
iVs (inv_alloc N _ (srv_inv γx γ1 γ2 γ3 γ4 γ5 p Q) with "[Hp Hempty Hblack]") as "#?".
{ iNext. rewrite /srv_inv. iLeft. iExists #0. by iFrame. }
(* iVs (inv_alloc N _ (own γ3 (Excl ()) ∨ own γ4 (Excl ()))%I with "[Hwhite]") as "#Hsinv". *)
(* { iNext. by iRight. } *)
wp_let. wp_bind (newlock _).
iApply newlock_spec=>//. iFrame "Hh".
iAssert (∃ x, own γx (1%Qp, DecAgree x) ★ own γ2 (Excl ()) ★ own γ3 (Excl ()))%I with "[Hissued Hfinished Hx]" as "Hinv".
iAssert (∃ x, own γx (1%Qp, DecAgree x) ★ own γ2 (Excl ()) ★ own γ5 (Excl ()))%I with "[Hissued Hfinished Hx]" as "Hinv".
{ iExists #0. by iFrame. }
iFrame "Hinv". iIntros (lk γlk) "#Hlk".
wp_let. wp_apply wp_fork.
iSplitL.
- (* client closure *)
iVsIntro. wp_seq. iVsIntro.
iAlways. iIntros (x).
wp_let. wp_bind (acquire _). iApply acquire_spec.
iFrame "Hlk". iIntros "Hlked Ho".
iDestruct "Ho" as (x') "[Hx [Hissued Hfinished]]".
wp_seq. wp_bind (_ <- _)%E.
iInv N as ">Hinv" "Hclose".
rewrite /srv_inv.
iDestruct "Hinv" as "[Hinv|[Hinv|Hinv]]".
+ iDestruct "Hinv" as (x'') "[Hp Hempty]".
wp_store.
iAssert (|=r=> own γx (1%Qp, DecAgree x))%I with "[Hx]" as "Ho".
{ iDestruct (own_update with "Hx") as "Hx"; last by iAssumption.
apply cmra_update_exclusive. done. }
iVs "Ho". iDestruct (own_update with "Ho") as "==>[Ho1 Ho2]"; first by apply pair_l_frac_op'.
iVs ("Hclose" with "[Hp Hissued Ho1]").
{ rewrite /locked. iNext. iRight. iLeft.
iExists x. by iFrame. }
iVsIntro. wp_seq.
wp_bind (wait _).
iApply (wait_spec with "[Hempty Hfinished Ho2 Hlked]"); first by done.
{ iFrame "Hh". iFrame "#". iFrame.
iIntros (y3) "[Hempty Hissued] Hx %".
wp_let. wp_bind (release _).
iApply pvs_wp.
iInv N as ">[Hinv|[Hinv|Hinv]]" "Hclose".
- admit.
- admit.
- iDestruct "Hinv" as (x4 y4) "(Hp & _ & _ & Hfinished)".
iVs ("Hclose" with "[Hp Hempty]").
{ iNext. iLeft. iExists y4. by iFrame. }
iApply release_spec.
iFrame "Hlk Hlked".
iSplitL "Hissued Hfinished Hx".
{ iExists x. by iFrame. }
by wp_seq.
}
+ admit.
+ admit.
iSplitR "Hwhite".
- (* (* client closure *) *)
(* iVsIntro. wp_seq. iVsIntro. *)
(* iAlways. iIntros (x). *)
(* wp_let. wp_bind (acquire _). iApply acquire_spec. *)
(* iFrame "Hlk". iIntros "Hlked Ho". *)
(* iDestruct "Ho" as (x') "[Hx [Hissued Hfinished]]". *)
(* wp_seq. wp_bind (_ <- _)%E. *)
(* iInv N as ">Hinv" "Hclose". *)
(* rewrite /srv_inv. *)
(* iDestruct "Hinv" as "[Hinv|[Hinv|Hinv]]". *)
(* + iDestruct "Hinv" as (x'') "[Hp Hempty]". *)
(* wp_store. *)
(* iAssert (|=r=> own γx (1%Qp, DecAgree x))%I with "[Hx]" as "Ho". *)
(* { iDestruct (own_update with "Hx") as "Hx"; last by iAssumption. *)
(* apply cmra_update_exclusive. done. } *)
(* iVs "Ho". iDestruct (own_update with "Ho") as "==>[Ho1 Ho2]"; first by apply pair_l_frac_op'. *)
(* iVs ("Hclose" with "[Hp Hissued Ho1]"). *)
(* { rewrite /locked. iNext. iRight. iLeft. *)
(* iExists x. by iFrame. } *)
(* iVsIntro. wp_seq. *)
(* wp_bind (wait _). *)
(* iApply (wait_spec with "[Hempty Hfinished Ho2 Hlked]"); first by done. *)
(* { iFrame "Hh". iFrame "#". iFrame. *)
(* iIntros (y3) "[Hempty Hissued] Hx %". *)
(* wp_let. wp_bind (release _). *)
(* iApply pvs_wp. *)
(* iInv N as ">[Hinv|[Hinv|Hinv]]" "Hclose". *)
(* - admit. *)
(* - admit. *)
(* - iDestruct "Hinv" as (x4 y4) "(Hp & _ & _ & Hfinished)". *)
(* iVs ("Hclose" with "[Hp Hempty]"). *)
(* { iNext. iLeft. iExists y4. by iFrame. } *)
(* iApply release_spec. *)
(* iFrame "Hlk Hlked". *)
(* iSplitL "Hissued Hfinished Hx". *)
(* { iExists x. by iFrame. } *)
(* by wp_seq. *)
(* } *)
(* + admit. *)
(* + admit. *) admit.
- (* server side *)
iLöb as "IH".
wp_rec. wp_let. wp_bind (! _)%E.
iInv N as ">[Hinv|[Hinv|[Hinv|Hinv]]]" "Hclose".
+ iDestruct "Hinv" as (x) "[Hp Hrest]".
wp_load. iVs ("Hclose" with "[Hp Hrest]").
{ iNext. rewrite /srv_inv. iLeft. iExists x. by iFrame. }
iVsIntro. wp_match. by iApply "IH".
+ iDestruct "Hinv" as (x y) "[Hp Hrest]".
wp_load. iVs ("Hclose" with "[Hp Hrest]").
{ iNext. rewrite /srv_inv. iRight. iLeft. iExists x, y. by iFrame. }
iVsIntro. wp_match. by iApply "IH".
+ iDestruct "Hinv" as (x) "(Hp & Hx & Hfinished & Hblack)".
wp_load. iVs ("Hclose" with "[Hp Hx Hfinished Hwhite]").
{ iNext. rewrite /srv_inv. iRight. iRight. iRight. iExists x. by iFrame. }
iVsIntro. wp_match.
wp_bind (_ <- _)%E.
iApply pvs_wp.
iInv N as ">[Hinv|[Hinv|[Hinv|Hinv]]]" "Hclose".
* admit.
* admit.
* admit.
* iDestruct "Hinv" as (x') "(Hp & Hx & Hfinished & Hwhite)".
iVs ("Hclose" with "[Hp Hx Hfinished Hblack]").
Admitted.
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