Skip to content
GitLab
Projects
Groups
Snippets
Help
Loading...
Help
What's new
10
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
Open sidebar
Iris
Iris
Commits
f6078a30
Commit
f6078a30
authored
Aug 24, 2016
by
Zhen Zhang
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
atomic
parent
f2450784
Changes
2
Hide whitespace changes
Inline
Side-by-side
Showing
2 changed files
with
81 additions
and
0 deletions
+81
-0
_CoqProject
_CoqProject
+1
-0
tests/atomic.v
tests/atomic.v
+80
-0
No files found.
_CoqProject
View file @
f6078a30
...
...
@@ -104,6 +104,7 @@ heap_lang/lib/barrier/protocol.v
heap_lang/lib/barrier/proof.v
heap_lang/proofmode.v
heap_lang/adequacy.v
tests/atomic.v
tests/heap_lang.v
tests/one_shot.v
tests/joining_existentials.v
...
...
tests/atomic.v
0 → 100644
View file @
f6078a30
From
iris
.
program_logic
Require
Export
hoare
weakestpre
.
From
iris
.
program_logic
Require
Export
pviewshifts
.
From
iris
.
program_logic
Require
Import
ownership
.
From
iris
.
algebra
Require
Import
upred_big_op
.
From
iris
.
prelude
Require
Export
coPset
.
From
iris
.
proofmode
Require
Import
tactics
pviewshifts
weakestpre
.
Import
uPred
.
Section
atomic
.
Context
`
{
irisG
Λ
Σ
}.
(* <x, α> e @ E_i, E_o <v, β x v> *)
Definition
atomic_triple
{
A
:
Type
}
(
α
:
A
→
iProp
Σ
)
(
β
:
A
→
val
_
→
iProp
Σ
)
(
Ei
Eo
:
coPset
)
(
e
:
expr
_
)
:
iProp
Σ
:
=
(
∀
P
Q
,
(
P
={
Eo
,
Ei
}=>
∃
x
:
A
,
α
x
★
((
α
x
={
Ei
,
Eo
}=
★
P
)
∧
(
∀
v
,
β
x
v
={
Ei
,
Eo
}=
★
Q
x
v
))
)
-
★
{{
P
}}
e
@
⊤
{{
v
,
(
∃
x
:
A
,
Q
x
v
)
}})%
I
.
Arguments
atomic_triple
{
_
}
_
_
_
_
_
.
End
atomic
.
From
iris
.
heap_lang
Require
Export
lang
.
From
iris
.
proofmode
Require
Import
invariants
tactics
.
From
iris
.
heap_lang
Require
Import
proofmode
notation
.
Section
demo
.
Context
`
{!
heapG
Σ
}
(
N
:
namespace
).
Definition
incr
:
val
:
=
rec
:
"incr"
"l"
:
=
let
:
"oldv"
:
=
!
"l"
in
if
:
CAS
"l"
"oldv"
(
"oldv"
+
#
1
)
then
"oldv"
(* return old value if success *)
else
"incr"
"l"
.
Global
Opaque
incr
.
(* TODO: Can we have a more WP-style definition and avoid the equality? *)
Definition
incr_triple
(
l
:
loc
)
:
=
atomic_triple
(
fun
(
v
:
Z
)
=>
l
↦
#
v
)%
I
(
fun
v
ret
=>
ret
=
#
v
★
l
↦
#(
v
+
1
))%
I
(
nclose
heapN
)
⊤
(
incr
#
l
).
Lemma
incr_atomic_spec
:
∀
(
l
:
loc
),
heapN
⊥
N
→
heap_ctx
⊢
incr_triple
l
.
Proof
.
iIntros
(
l
HN
)
"#?"
.
rewrite
/
incr_triple
.
rewrite
/
atomic_triple
.
iIntros
(
P
Q
)
"#Hvs"
.
iL
ö
b
as
"IH"
.
iIntros
"!# HP"
.
wp_rec
.
wp_bind
(!
_
)%
E
.
iVs
(
"Hvs"
with
"HP"
)
as
(
x
)
"[Hl [Hvs' _]]"
.
wp_load
.
iVs
(
"Hvs'"
with
"Hl"
)
as
"HP"
.
iVsIntro
.
wp_let
.
wp_bind
(
CAS
_
_
_
).
wp_op
.
(* iVs ("Hvs" with "HP") as (x) "[Hl Hvs']". (* FIXME: Can't apply, bug? *) *)
iApply
(
wp_atomic
⊤
heapN
_
)
;
first
by
solve_atomic
.
iVs
(
"Hvs"
with
"HP"
)
as
(
x'
)
"[Hl Hvs']"
.
destruct
(
decide
(
x
=
x'
)).
-
subst
.
iDestruct
"Hvs'"
as
"[_ Hvs']"
.
iSpecialize
(
"Hvs'"
$!
#
x'
).
iVsIntro
.
wp_cas_suc
.
iVs
(
"Hvs'"
with
"[Hl]"
)
as
"HQ"
;
first
by
iFrame
.
iVsIntro
.
wp_if
.
iVsIntro
.
by
iExists
x'
.
-
iDestruct
"Hvs'"
as
"[Hvs' _]"
.
iVsIntro
.
wp_cas_fail
.
iVs
(
"Hvs'"
with
"[Hl]"
)
as
"HP"
;
first
by
iFrame
.
iVsIntro
.
wp_if
.
by
iApply
"IH"
.
Qed
.
End
demo
.
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment