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Rodolphe Lepigre
Iris
Commits
d5229693
Commit
d5229693
authored
Jul 19, 2016
by
Robbert Krebbers
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Use SOME/NONE in tests/one_shot.
parent
2966b4da
Changes
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tests/one_shot.v
tests/one_shot.v
+14
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tests/one_shot.v
View file @
d5229693
...
...
@@ 5,17 +5,17 @@ From iris.proofmode Require Import invariants ghost_ownership.
Import
uPred
.
Definition
one_shot_example
:
val
:
=
λ
:
<>,
let
:
"x"
:
=
ref
(
InjL
#
0
)
in
(
let
:
"x"
:
=
ref
NONE
in
(
(* tryset *)
(
λ
:
"n"
,
CAS
"x"
(
InjL
#
0
)
(
InjR
"n"
)),
CAS
"x"
NONE
(
SOME
"n"
)),
(* check *)
(
λ
:
<>,
let
:
"y"
:
=
!
"x"
in
λ
:
<>,
match
:
"y"
with
InjL
<>
=>
#()

InjR
"n"
=>
NONE
=>
#()

SOME
"n"
=>
match
:
!
"x"
with
InjL
<>
=>
assert
:
#
false

InjR
"m"
=>
assert
:
"n"
=
"m"
NONE
=>
assert
:
#
false

SOME
"m"
=>
assert
:
"n"
=
"m"
end
end
)).
Global
Opaque
one_shot_example
.
...
...
@@ 35,8 +35,8 @@ Context (heapN N : namespace) (HN : heapN ⊥ N).
Local
Notation
iProp
:
=
(
iPropG
heap_lang
Σ
).
Definition
one_shot_inv
(
γ
:
gname
)
(
l
:
loc
)
:
iProp
:
=
(
l
↦
InjLV
#
0
★
own
γ
Pending
∨
∃
n
:
Z
,
l
↦
InjR
V
#
n
★
own
γ
(
Cinr
(
DecAgree
n
)))%
I
.
(
l
↦
NONEV
★
own
γ
Pending
∨
∃
n
:
Z
,
l
↦
SOME
V
#
n
★
own
γ
(
Cinr
(
DecAgree
n
)))%
I
.
Lemma
wp_one_shot
(
Φ
:
val
→
iProp
)
:
heap_ctx
heapN
★
(
∀
f1
f2
:
val
,
...
...
@@ 58,14 +58,14 @@ Proof.
iPvsIntro
;
iRight
;
iExists
n
;
by
iSplitL
"Hl"
.
+
wp_cas_fail
.
rewrite
/
one_shot_inv
;
eauto
10
.

iIntros
"!"
.
wp_seq
.
wp_focus
(!
_
)%
E
.
iInv
>
N
as
"Hγ"
.
iAssert
(
∃
v
,
l
↦
v
★
((
v
=
InjLV
#
0
★
own
γ
Pending
)
∨
∃
n
:
Z
,
v
=
InjR
V
#
n
★
own
γ
(
Cinr
(
DecAgree
n
))))%
I
with
"[]"
as
"Hv"
.
iAssert
(
∃
v
,
l
↦
v
★
((
v
=
NONEV
★
own
γ
Pending
)
∨
∃
n
:
Z
,
v
=
SOME
V
#
n
★
own
γ
(
Cinr
(
DecAgree
n
))))%
I
with
"[]"
as
"Hv"
.
{
iDestruct
"Hγ"
as
"[[Hl Hγ]Hl]"
;
last
iDestruct
"Hl"
as
(
m
)
"[Hl Hγ]"
.
+
iExists
(
InjLV
#
0
)
.
iFrame
.
eauto
.
+
iExists
(
InjR
V
#
m
).
iFrame
.
eauto
.
}
+
iExists
NONEV
.
iFrame
.
eauto
.
+
iExists
(
SOME
V
#
m
).
iFrame
.
eauto
.
}
iDestruct
"Hv"
as
(
v
)
"[Hl Hv]"
.
wp_load
;
iPvsIntro
.
iAssert
(
one_shot_inv
γ
l
★
(
v
=
InjLV
#
0
∨
∃
n
:
Z
,
v
=
InjR
V
#
n
★
own
γ
(
Cinr
(
DecAgree
n
))))%
I
with
"[]"
as
"[$ #Hv]"
.
iAssert
(
one_shot_inv
γ
l
★
(
v
=
NONEV
∨
∃
n
:
Z
,
v
=
SOME
V
#
n
★
own
γ
(
Cinr
(
DecAgree
n
))))%
I
with
"[]"
as
"[$ #Hv]"
.
{
iDestruct
"Hv"
as
"[[% ?]Hv]"
;
last
iDestruct
"Hv"
as
(
m
)
"[% ?]"
;
subst
.
+
iSplit
.
iLeft
;
by
iSplitL
"Hl"
.
eauto
.
+
iSplit
.
iRight
;
iExists
m
;
by
iSplitL
"Hl"
.
eauto
.
}
...
...
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