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assemblyscript/tests/allocators/runner.js at dcodeIO-patch-1 · deep-stack/assemblyscript · GitHub
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assemblyscript
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allocators
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runner.js
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117 lines (104 loc) · 3.39 KB
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assemblyscript
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tests
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allocators
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runner.js
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function
runner
(
exports
,
runs
,
allocs
)
{
const
alloc
=
exports
[
"heap.alloc"
]
;
const
free
=
exports
[
"heap.free"
]
;
const
reset
=
exports
[
"heap.reset"
]
;
const
fill
=
exports
[
"memory.fill"
]
;
const
ptrs
=
[
]
;
function
randomAlloc
(
maxSize
)
{
if
(
!
maxSize
)
maxSize
=
8192
;
var
size
=
(
(
Math
.
random
(
)
*
maxSize
)
>>>
0
)
+
1
;
size
=
(
size
+
3
)
&
~
3
;
var
ptr
=
alloc
(
size
,
0
)
;
if
(
!
ptr
)
throw
Error
(
)
;
if
(
(
ptr
&
15
)
!=
0
)
throw
Error
(
"invalid alignment: "
+
(
ptr
&
15
)
+
" on "
+
ptr
)
;
if
(
ptrs
.
indexOf
(
ptr
)
>=
0
)
throw
Error
(
"duplicate pointer"
)
;
if
(
fill
)
fill
(
ptr
,
ptr
%
16
,
size
)
;
ptrs
.
push
(
ptr
)
;
return
ptr
;
}
function
preciseFree
(
ptr
)
{
var
idx
=
ptrs
.
indexOf
(
ptr
)
;
if
(
idx
<
0
)
throw
Error
(
"unknown pointer"
)
;
ptr
=
ptrs
[
idx
]
;
ptrs
.
splice
(
idx
,
1
)
;
if
(
typeof
ptr
!==
"number"
)
throw
Error
(
)
;
free
(
ptr
)
;
}
function
randomFree
(
)
{
var
idx
=
(
Math
.
random
(
)
*
ptrs
.
length
)
>>>
0
;
var
ptr
=
ptrs
[
idx
]
;
if
(
typeof
ptr
!==
"number"
)
throw
Error
(
)
;
ptrs
.
splice
(
idx
,
1
)
;
free
(
ptr
)
;
}
// remember the smallest possible memory address
var
base
=
alloc
(
64
,
0
)
;
console
.
log
(
"base: "
+
base
)
;
try
{
reset
(
)
;
}
catch
(
e
)
{
free
(
base
)
;
}
var
currentMem
=
exports
.
memory
.
buffer
.
byteLength
;
console
.
log
(
"mem initial: "
+
currentMem
)
;
function
testMemChanged
(
)
{
var
actualMem
=
exports
.
memory
.
buffer
.
byteLength
;
if
(
actualMem
>
currentMem
)
{
console
.
log
(
"mem changed: "
+
currentMem
+
" -> "
+
actualMem
)
;
currentMem
=
actualMem
;
}
}
try
{
for
(
var
j
=
0
;
j
<
runs
;
++
j
)
{
console
.
log
(
"run "
+
(
j
+
1
)
+
" ("
+
allocs
+
" allocations) ..."
)
;
for
(
var
i
=
0
;
i
<
allocs
;
++
i
)
{
var
ptr
=
randomAlloc
(
)
;
testMemChanged
(
)
;
// immediately free every 4th
if
(
!
(
i
%
4
)
)
preciseFree
(
ptr
)
;
// occasionally free random blocks
else
if
(
ptrs
.
length
&&
Math
.
random
(
)
<
0.33
)
randomFree
(
)
;
// ^ sums up to clearing about half the blocks half-way
}
// free the rest, randomly
while
(
ptrs
.
length
)
randomFree
(
)
;
try
{
reset
(
)
;
let
ptr
=
alloc
(
64
,
0
)
;
if
(
ptr
!==
base
)
throw
Error
(
"expected "
+
base
+
" but got "
+
ptr
)
;
reset
(
)
;
}
catch
(
e
)
{
// should now be possible to reuse the entire memory
// just try a large portion of the memory here, for example because of
// SL+1 for allocations in TLSF
let
size
=
(
(
exports
.
memory
.
buffer
.
byteLength
-
base
)
*
9
/
10
)
>>>
0
;
let
ptr
=
alloc
(
size
,
0
)
;
// if (fill) fill(ptr, 0xac, size);
if
(
ptr
!==
base
)
throw
Error
(
"expected "
+
base
+
" but got "
+
ptr
)
;
free
(
ptr
)
;
}
testMemChanged
(
)
;
}
}
finally
{
// mem(exports.memory, 0, 0x800);
}
}
/* function mem(memory, offset, count) {
if (!offset) offset = 0;
if (!count) count = 1024;
var mem = new Uint8Array(memory.buffer, offset);
// var stackTop = new Uint32Array(memory.buffer, 4, 1)[0];
var hex = [];
for (var i = 0; i < count; ++i) {
var o = (offset + i).toString(16);
while (o.length < 4) o = "0" + o;
if ((i & 15) === 0) {
hex.push("\n" + o + ":");
}
var h = mem[i].toString(16);
if (h.length < 2) h = "0" + h;
hex.push(h);
}
console.log(hex.join(" ") + " ...");
} */
if
(
typeof
module
===
"object"
&&
typeof
exports
===
"object"
)
module
.
exports
=
runner
;
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