newchan -> newbarrier

barrier/barrier.v

 From heap_lang Require Export substitution notation.
 
-Definition newchan : val := λ: "", ref '0.
+Definition newbarrier : val := λ: "", ref '0.
 Definition signal : val := λ: "x", "x" <- '1.
 Definition wait : val :=
   rec: "wait" "x" := if: !"x" = '1 then '() else "wait" "x".
 
-Instance newchan_closed : Closed newchan. Proof. solve_closed. Qed.
+Instance newbarrier_closed : Closed newbarrier. Proof. solve_closed. Qed.
 Instance signal_closed : Closed signal. Proof. solve_closed. Qed.
-Instance wait_closed : Closed wait. Proof. solve_closed. Qed.
\ No newline at end of file
+Instance wait_closed : Closed wait. Proof. solve_closed. Qed.

barrier/client.v

@@ -2,7 +2,7 @@ From barrier Require Import proof.
 From program_logic Require Import auth sts saved_prop hoare ownership.
 Import uPred.
 
-Definition client := (let: "b" := newchan '() in wait "b")%L.
+Definition client := (let: "b" := newbarrier '() in wait "b")%L.
 
 Section client.
   Context {Σ : iFunctorG} `{!heapG Σ, !barrierG Σ} (heapN N : namespace).
@@ -12,7 +12,7 @@ Section client.
     heapN ⊥ N → heap_ctx heapN ⊑ || client {{ λ _, True }}.
   Proof.
     intros ?. rewrite /client.
-    ewp eapply (newchan_spec heapN N True%I); last done.
+    ewp eapply (newbarrier_spec heapN N True%I); last done.
     apply sep_intro_True_r; first done.
     apply forall_intro=>l. apply wand_intro_l. rewrite right_id.
     wp_let. etrans; last eapply wait_spec.

barrier/proof.v

@@ -118,12 +118,12 @@ Proof.
 Qed.
 
 (** Actual proofs *)
-Lemma newchan_spec (P : iProp) (Φ : val → iProp) :
+Lemma newbarrier_spec (P : iProp) (Φ : val → iProp) :
   heapN ⊥ N →
   (heap_ctx heapN ★ ∀ l, recv l P ★ send l P -★ Φ (LocV l))
-  ⊑ || newchan '() {{ Φ }}.
+  ⊑ || newbarrier '() {{ Φ }}.
 Proof.
-  intros HN. rewrite /newchan. wp_seq.
+  intros HN. rewrite /newbarrier. wp_seq.
   rewrite -wp_pvs. wp eapply wp_alloc; eauto with I ndisj.
   apply forall_intro=>l. rewrite (forall_elim l). apply wand_intro_l.
   rewrite !assoc. apply pvs_wand_r.

barrier/specification.v

@@ -12,7 +12,7 @@ Local Notation iProp := (iPropG heap_lang Σ).
 Lemma barrier_spec (heapN N : namespace) :
   heapN ⊥ N →
   ∃ recv send : loc → iProp -n> iProp,
-    (∀ P, heap_ctx heapN ⊑ {{ True }} newchan '() {{ λ v, ∃ l, v = LocV l ★ recv l P ★ send l P }}) ∧
+    (∀ P, heap_ctx heapN ⊑ {{ True }} newbarrier '() {{ λ v, ∃ l, v = LocV l ★ recv l P ★ send l P }}) ∧
     (∀ l P, {{ send l P ★ P }} signal (LocV l) {{ λ _, True }}) ∧
     (∀ l P, {{ recv l P }} wait (LocV l) {{ λ _, P }}) ∧
     (∀ l P Q, {{ recv l (P ★ Q) }} Skip {{ λ _, recv l P ★ recv l Q }}) ∧
@@ -22,7 +22,7 @@ Proof.
   exists (λ l, CofeMor (recv heapN N l)), (λ l, CofeMor (send heapN N l)).
   split_and?; simpl.
   - intros P. apply: always_intro. apply impl_intro_r.
-    rewrite -(newchan_spec heapN N P) // always_and_sep_r.
+    rewrite -(newbarrier_spec heapN N P) // always_and_sep_r.
     apply sep_mono_r, forall_intro=>l; apply wand_intro_l.
     by rewrite right_id -(exist_intro l) const_equiv // left_id.
   - intros l P. apply ht_alt. by rewrite -signal_spec right_id.