Commit aafa852b authored by Dan Frumin's avatar Dan Frumin
Browse files

`FromSep` instance for the locking heap mapsto

parent 24e8b235
......@@ -175,7 +175,7 @@ Section properties.
iDestruct (mapsto_agree with "Hl1 Hl2") as %->. done.
Lemma mapsto_combine x x' l q q' v : l C[x]{q} v - l C[x']{q'} v - l C[x x']{q+q'} v.
Lemma mapsto_combine l x x' q q' v : l C[x]{q} v - l C[x']{q'} v - l C[x x']{q+q'} v.
rewrite mapsto_eq /mapsto_def.
iDestruct 1 as (b1 Hb1) "[Hl1 Ho1]".
......@@ -186,6 +186,13 @@ Section properties.
iCombine "Ho1 Ho2" as "Ho". rewrite frac_op'. iFrame.
Global Instance from_sep_mapsto l x x' q q' v :
FromSep (l C[xx']{q+q'} v) (l C[x]{q} v) (l C[x']{q'} v).
rewrite /FromSep. iIntros "[Hl1 Hl2]".
iApply (mapsto_combine with "Hl1 Hl2").
Lemma to_locking_heap_insert σ l x :
to_locking_heap (<[l := x]> σ) = <[l := (1%Qp, x)]>(to_locking_heap σ).
Proof. by rewrite /to_locking_heap fmap_insert. Qed.
......@@ -8,10 +8,11 @@ Section test.
Context `{amonadG Σ}.
Lemma test1 (l : loc) :
l C[LLvl] #1 -
l C[LLvl]{1/2} #1 - l C[LLvl]{1/2} #1 -
awp (a_seq #();;; a_load (a_ret #l)) True (λ v, v = #1 l C #1).
iIntros "Hl".
iIntros "Hl1 Hl2". iCombine "Hl1 Hl2" as "Hl".
rewrite Qp_half_half.
iApply awp_bind.
iApply a_seq_spec.
......@@ -193,7 +193,7 @@ Section denv_spec.
rewrite /denv_interp_aux. simpl. Transparent denv_insert.
iDestruct "H1" as "[H1 $]".
iDestruct (mapsto_value_agree with "H1 H2") as %->.
iDestruct (mapsto_combine with "H1 H2") as "H".
iCombine "H1 H2" as "H".
iApply (mapsto_downgrade' with "H").
apply lvl_included. destruct x,x'; eauto.
* iIntros "[H1 H2]".
......@@ -240,7 +240,7 @@ Section denv_spec.
(* TODO: this can be factored away *)
destruct dio1 as [d1|], dio2 as [d2|]; simpl; iFrame.
+ destruct d1, d2. simpl. iDestruct (mapsto_value_agree with "Hl1 Hl2") as %->.
iDestruct (mapsto_combine with "Hl1 Hl2") as "$".
iCombine "Hl1 Hl2" as "$".
iApply (big_sepL_mono with "IH1"). intros n y ?. simpl.
assert ((k + S n)%nat = ((S k) + n)%nat) as -> by omega. done.
+ iApply (big_sepL_mono with "IH1"). intros n y ?. simpl.
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