Re: subs and variables speed question
> On 2/11/19 3:27 AM, Timo Paulssen wrote:
> > WHICH doesn't give you a numerical value. just print it as it is.
>
>
> $ p6 'sub a (Buf $b) { say $b.WHICH }; my $c = Buf.new(1,2,3); say
> $c.WHICH; a($c);'
> Buf|71848984
> Buf|71848984
>
> If "moarvm has a moving garbage collector" moves my 100 MB+ buffer
> around, "I am in a heap of trouble".
The buffer lives one indirection (aka pointer) away from the part that
is garbage-collector managed, so moving the object doesn't make a
difference here, luckily.
Re: subs and variables speed question
On 11/02/2019 07:12, ToddAndMargo via perl6-users wrote:
WHERE is pretty sweet command!
$ p6 'sub a (Buf $b) { say $b.WHERE.base(0x10) }; my $c =
Buf.new(1,2,3); say $c.WHERE.base(0x10); a($c);'
7F385D41334C
7F385D41334C
On 11/02/2019 12:16, ToddAndMargo via perl6-users wrote:
On 2/11/19 2:52 AM, Timo Paulssen wrote:
Please be aware that WHERE will give you the actual memory address of an
object, but moarvm has a moving garbage collector, which means that
objects can change their memory location. at the moment it will only
happen up to two times, i believe.
you'll probably have a better result with .WHICH for what you want to
achieve.
>>
>> $ p6 'sub a (Buf $b) { say $b.WHICH.base(0x10) }; my $c =
>> Buf.new(1,2,3); say $c.WHICH.base(0x10); a($c);'
>> No such method 'base' for invocant of type 'ObjAt'. Did you mean any
>> of these?
>> Hash
>> hash
>> take
>>
>>in block at -e line 1
>>
>>
On 2/11/19 3:27 AM, Timo Paulssen wrote:
> WHICH doesn't give you a numerical value. just print it as it is.
$ p6 'sub a (Buf $b) { say $b.WHICH }; my $c = Buf.new(1,2,3); say
$c.WHICH; a($c);'
Buf|71848984
Buf|71848984
If "moarvm has a moving garbage collector" moves my 100 MB+ buffer
around, "I am in a heap of trouble".
Re: subs and variables speed question
WHICH doesn't give you a numerical value. just print it as it is.
On 11/02/2019 12:16, ToddAndMargo via perl6-users wrote:
> On 2/11/19 2:52 AM, Timo Paulssen wrote:
>> Please be aware that WHERE will give you the actual memory address of an
>> object, but moarvm has a moving garbage collector, which means that
>> objects can change their memory location. at the moment it will only
>> happen up to two times, i believe.
>>
>> you'll probably have a better result with .WHICH for what you want to
>> achieve.
>>
>> On 11/02/2019 07:12, ToddAndMargo via perl6-users wrote:
>>> WHERE is pretty sweet command!
>>>
>>>
>>> $ p6 'sub a (Buf $b) { say $b.WHERE.base(0x10) }; my $c =
>>> Buf.new(1,2,3); say $c.WHERE.base(0x10); a($c);'
>>>
>>> 7F385D41334C
>>> 7F385D41334C
>
> $ p6 'sub a (Buf $b) { say $b.WHICH.base(0x10) }; my $c =
> Buf.new(1,2,3); say $c.WHICH.base(0x10); a($c);'
> No such method 'base' for invocant of type 'ObjAt'. Did you mean any
> of these?
> Hash
> hash
> take
>
> in block at -e line 1
>
>
>
Re: subs and variables speed question
On 2/11/19 2:52 AM, Timo Paulssen wrote:
Please be aware that WHERE will give you the actual memory address of an
object, but moarvm has a moving garbage collector, which means that
objects can change their memory location. at the moment it will only
happen up to two times, i believe.
you'll probably have a better result with .WHICH for what you want to
achieve.
On 11/02/2019 07:12, ToddAndMargo via perl6-users wrote:
WHERE is pretty sweet command!
$ p6 'sub a (Buf $b) { say $b.WHERE.base(0x10) }; my $c =
Buf.new(1,2,3); say $c.WHERE.base(0x10); a($c);'
7F385D41334C
7F385D41334C
$ p6 'sub a (Buf $b) { say $b.WHICH.base(0x10) }; my $c =
Buf.new(1,2,3); say $c.WHICH.base(0x10); a($c);'
No such method 'base' for invocant of type 'ObjAt'. Did you mean any of
these?
Hash
hash
take
in block at -e line 1
--
~~
Computers are like air conditioners.
They malfunction when you open windows
~~
Re: subs and variables speed question
Please be aware that WHERE will give you the actual memory address of an
object, but moarvm has a moving garbage collector, which means that
objects can change their memory location. at the moment it will only
happen up to two times, i believe.
you'll probably have a better result with .WHICH for what you want to
achieve.
On 11/02/2019 07:12, ToddAndMargo via perl6-users wrote:
> WHERE is pretty sweet command!
>
>
> $ p6 'sub a (Buf $b) { say $b.WHERE.base(0x10) }; my $c =
> Buf.new(1,2,3); say $c.WHERE.base(0x10); a($c);'
>
> 7F385D41334C
> 7F385D41334C
Re: subs and variables speed question
On 2/9/19 2:28 PM, ToddAndMargo via perl6-users wrote:
On 2/9/19 1:56 PM, ToddAndMargo via perl6-users wrote:
Hi All,
sub xxx( Buf $YugeBuf is ro ) {some midricle}
Is $YugeBuf (up to 100 MB) a copy of just the structure?
I don't want the time time of a copy.
Many thanks,
-T
Without all the typos:
Hi All,
sub xxx( Buf $YugeBuf is ro ) {some miricle}
Is $YugeBuf (up to 100 MB) a copy of the entire variable
or just the structure? I don't want the time hit of a copy.
Many thanks,
-T
It is not a duplicate:
[20:30] A question for the developers. sub xxx( Buf
$YugeBuf is ro ) {some miricle} Is $YugeBuf (up to 100 MB) a copy of
the entire variable or just the structure? I don't want the time hit of
a copy
[20:32] == Cabanossi
[~cabano...@ppp-88-217-73-102.dynamic.mnet-online.de] has joined #perl6
[20:36] == kurahaupo_
[~kuraha...@pa49-195-197-60.pa.nsw.optusnet.com.au] has joined #perl6
[20:36] == kurahaupo [~kurahaupo@125.254.10.75] has quit [Read error:
Connection reset by peer]
[20:36] ToddAndMargo: it seems to be
[20:37] == kurahaupo_
[~kuraha...@pa49-195-197-60.pa.nsw.optusnet.com.au] has quit [Read
error: Connection reset by peer]
[20:38] p6: sub a (Buf $b) { say $b.WHERE }; my $c =
Buf.new(1,2,3); say $c.WHERE; a($c)
[20:38] <+camelia> rakudo-moar d904b7048: OUTPUT:
«139828431461220139828431461220»
[20:39] == kurahaupo [~kurahaupo@125.254.10.75] has joined #perl6
[20:45] == kurahaupo [~kurahaupo@125.254.10.75] has quit [Read error:
Connection reset by peer]
[20:45] Err, I meant that to be "Buf $b is readonly" but result
is the same.
[20:46] == kurahaupo [~kurahaupo@125.254.10.75] has joined #perl6
[20:48] == aindilis
[~aindi...@172-12-3-117.lightspeed.sgnwmi.sbcglobal.net] has quit [Ping
timeout: 240 seconds]
[20:49] Even when you use "is copy", the copy doesn't get made
until after the value has been modified. Seems Rakudo is smart in that
regards:
[20:49] p6: sub a ($a is copy) { say $a.WHERE; $a++; say
$a.WHERE}; my $b = 1; say $b.WHERE; a($b)
[20:49] <+camelia> rakudo-moar d904b7048: OUTPUT:
«140226293132168140226293132168140226293132208»
[20:49] == aindilis
[~aindi...@172-12-3-117.lightspeed.sgnwmi.sbcglobal.net] has joined #perl6
[20:53] Just be aware that readonly doesn't necessarily mean
what you might think it does:
[20:53] p6: sub a (Buf $b is readonly) { $b[0] = 0}; my $c =
Buf.new(1,2,3); a($c); say $c
[20:53] <+camelia> rakudo-moar d904b7048: OUTPUT: «Buf:0x<00 02 03>»
Re: subs and variables speed question
On 2/9/19 2:28 PM, ToddAndMargo via perl6-users wrote:
On 2/9/19 1:56 PM, ToddAndMargo via perl6-users wrote:
Hi All,
sub xxx( Buf $YugeBuf is ro ) {some midricle}
Is $YugeBuf (up to 100 MB) a copy of just the structure?
I don't want the time time of a copy.
Many thanks,
-T
Without all the typos:
Hi All,
sub xxx( Buf $YugeBuf is ro ) {some miricle}
Is $YugeBuf (up to 100 MB) a copy of the entire variable
or just the structure? I don't want the time hit of a copy.
Many thanks,
-T
It is not a duplicate:
[20:30] A question for the developers. sub xxx( Buf
$YugeBuf is ro ) {some miricle} Is $YugeBuf (up to 100 MB) a copy of
the entire variable or just the structure? I don't want the time hit of
a copy
[20:32] == Cabanossi
[~cabano...@ppp-88-217-73-102.dynamic.mnet-online.de] has joined #perl6
[20:36] == kurahaupo_
[~kuraha...@pa49-195-197-60.pa.nsw.optusnet.com.au] has joined #perl6
[20:36] == kurahaupo [~kurahaupo@125.254.10.75] has quit [Read error:
Connection reset by peer]
[20:36] ToddAndMargo: it seems to be
[20:37] == kurahaupo_
[~kuraha...@pa49-195-197-60.pa.nsw.optusnet.com.au] has quit [Read
error: Connection reset by peer]
[20:38] p6: sub a (Buf $b) { say $b.WHERE }; my $c =
Buf.new(1,2,3); say $c.WHERE; a($c)
[20:38] <+camelia> rakudo-moar d904b7048: OUTPUT:
«139828431461220139828431461220»
[20:39] == kurahaupo [~kurahaupo@125.254.10.75] has joined #perl6
[20:45] == kurahaupo [~kurahaupo@125.254.10.75] has quit [Read error:
Connection reset by peer]
[20:45] Err, I meant that to be "Buf $b is readonly" but result
is the same.
[20:46] == kurahaupo [~kurahaupo@125.254.10.75] has joined #perl6
[20:48] == aindilis
[~aindi...@172-12-3-117.lightspeed.sgnwmi.sbcglobal.net] has quit [Ping
timeout: 240 seconds]
[20:49] Even when you use "is copy", the copy doesn't get made
until after the value has been modified. Seems Rakudo is smart in that
regards:
[20:49] p6: sub a ($a is copy) { say $a.WHERE; $a++; say
$a.WHERE}; my $b = 1; say $b.WHERE; a($b)
[20:49] <+camelia> rakudo-moar d904b7048: OUTPUT:
«140226293132168140226293132168140226293132208»
[20:49] == aindilis
[~aindi...@172-12-3-117.lightspeed.sgnwmi.sbcglobal.net] has joined #perl6
[20:53] Just be aware that readonly doesn't necessarily mean
what you might think it does:
[20:53] p6: sub a (Buf $b is readonly) { $b[0] = 0}; my $c =
Buf.new(1,2,3); a($c); say $c
[20:53] <+camelia> rakudo-moar d904b7048: OUTPUT: «Buf:0x<00 02 03>»
Re: subs and variables speed question
WHERE is pretty sweet command!
$ p6 'sub a (Buf $b) { say $b.WHERE.base(0x10) }; my $c =
Buf.new(1,2,3); say $c.WHERE.base(0x10); a($c);'
7F385D41334C
7F385D41334C
Re: subs and variables speed question
On 2/9/19 1:56 PM, ToddAndMargo via perl6-users wrote:
Hi All,
sub xxx( Buf $YugeBuf is ro ) {some midricle}
Is $YugeBuf (up to 100 MB) a copy of just the structure?
I don't want the time time of a copy.
Many thanks,
-T
Without all the typos:
Hi All,
sub xxx( Buf $YugeBuf is ro ) {some miricle}
Is $YugeBuf (up to 100 MB) a copy of the entire variable
or just the structure? I don't want the time hit of a copy.
Many thanks,
-T
subs and variables speed question
Hi All,
sub xxx( Buf $YugeBuf is ro ) {some midricle}
Is $YugeBuf (up to 100 MB) a copy of just the structure?
I don't want the time time of a copy.
Many thanks,
-T
