= 0 {
goto childerror
}
continue
}
On Monday, March 4, 2024 at 1:13:08 PM UTC-7 Jeff Stein wrote:
> It appears this was in fact the issue.
>
> I added some code to print out the `FD_CLOEXEC` state. Files called via
> *syscall.Dupe2* end up with a *FD_CLOEXEC=0* whereas anything passed via
towards a
wonderful discovery about what NOT to do :)
On Monday, March 4, 2024 at 12:03:16 PM UTC-7 Jeff Stein wrote:
> I think I may have discovered the issue.
>
> I made a sys call to duplicate the file descriptor
>
> dupFd, err := syscall.Dup(int(file.Fd()))
> if err != nil {
>
quals fd2, then dup2 returns fd2 without closing it.
Otherwise, the FD_CLOEXEC file descriptor flag is cleared for fd2, so
that fd2 is left open if the process calls exec.*
Does this sound like what may have been happening?
On Monday, March 4, 2024 at 9:04:31 AM UTC-7 Jeff Stein wrote:
> OP h
comes around.
>
> Good point, I am assuming that the OP is using the os/exec package to
> start up a new copy of the process.
>
> A simple fork without an exec can't work in Go, or in any
> multi-threaded program.
>
> Ian
>
>
> > > On Mar 1, 20
I'm struggling to understand if I'm able to do something.
In my very odd use case we are writing a websever that handles connections
via a forked process.
I have a listener process that listens for TCP connections.
So each net.Conn that comes in we pull off its file descriptor:
*fd, err := co
Consider skipping specific tests when the race detector is active.
Alternatively (and dangerously, unless you understand the consequences),
provide two implementations; one that is safe and is used when race
detection is enabled, and another that is unsafe, and use build flags to
control it:
Unlike C, Go has no `volatile` keyword. Therefore, the compiler is allowed
to cache a value that is never updated in the scope that it sees, and
there's no way for us to tell it not to do that. Issues like this aren't
really data races, but they are caught by the race detector.
On Wednesday,
On 2/16/2022 2:43 PM, Ian Lance Taylor wrote:
On Tue, Feb 15, 2022 at 2:49 PM Blackgreen wrote:
I came across this stack overflow question:
https://stackoverflow.com/questions/71131665/generics-pass-map-with-derived-types
The OP attempted to pass different maps into this code:
func equal[M1,
Hi All,
I optimized this file, by unrolling small loops and removing unnecessary
branches. What's the next step to get it in the process for eventual
inclusion ? It's about 30% faster.
src/crypto/elliptic/p224.go
Thanks,
Jeff
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Just a complete shot in the dark. Have you verified that the environment
variables you set are indeed getting picked up inside of your
application? Try checking the output of os.GetEnv("HTTP_PROXY"),
os.GetEnv("HTTPS_PROXY"), and os.GetEnv("NO_PROXY"). Make sure that if
NO_PROXY is set that it
On 4/9/21 11:57 AM, Tenjin wrote:
Basically I am making a script to query an api for some json data, if
I run it synchronously it works fine and works as intended but it
needs to do this give or take 15thousand times so I thought I would
use concurrency to get the job done. It works fine for a
Jan 28, 2021 at 9:29 AM Jeff Mangan wrote:
>
>> I am trying to get the results of top (more specifically htop) but every
>> time it prints nothing, whereas any other command (ls, pwd, etc...) returns
>> the output fine. My objective is to get access to the process stats
I am trying to get the results of top (more specifically htop) but every
time it prints nothing, whereas any other command (ls, pwd, etc...) returns
the output fine. My objective is to get access to the process stats that
are returned to the screen.
Here is the latest example which displays noth
I am able to open a wav file and iterate through samples of it. I am trying
to figure out the level of sound (loud vs low talking) and I believe it's a
matter of getting some value from the sample and then running some math
formulas.
Anyone have any ideas or references on this, prefer not some hea
:= tx.Commit(); err != ErrConcurrentTransaction {
return cmt, err
}
On Sunday, December 27, 2020 at 3:04:32 AM UTC-5 peterGo wrote:
> Jeff,
>
> Retry if err == ErrConcurrentTransaction.
>
> Peter
>
> On Saturday, December 26, 2020 at 10:54:36 PM UTC-5 Jeff wrote:
&
hrough the for loop the number of times. Thus,
increasing the attempts would actually decrease the chances of successfully
committing the transaction as it would need to be successful for each
attempt.
Hopefully, my interpretation is wrong and someone can explain what is
actually going on.
Th
I asked a similar question recently, but have decided to approach a
different way.
I'm looking for a way to do something similar to a standard sound record
app that shows a graph line chart of the input from a mic. That's it,
nothing fancy doesn't need to record and save or anything.
Has anyone
https://alexyakunin.medium.com/go-vs-c-part-1-goroutines-vs-async-await-ac909c651c11
Interesting article, only had time to skim but seems to lean towards C#.
Thoughts?
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reat non-Go-specific
> article about generating waveform data
> https://matt.aimonetti.net/posts/2019-06-generating-waveform-data-audio-representation/
> .
>
> I hope this helps with your search.
> On Tuesday, December 15, 2020 at 2:42:50 PM UTC-5 Jeff Mangan wrote:
>
>>
>
I want to know if there is a, internal or other package to get the decibel
level from an audio stream or file say every second, or few seconds, etc...
I tried searching and have not found anything.
Anyone know of a way to accomplish this with golang? I'd rather not use
c#, java, etc...
Than
On Monday, October 14, 2019 at 5:53:23 AM UTC-7, Jeff Kayser wrote:
>
> I'm working through the most excellent book "Concurrency in Go", doing the
> example on page 162-166. My code is here:
>
> https://play.golang.org/p/7kokkAIdhov
>
> The program is not t
r examples have worked as expected, including the one just
before this, which is almost identical, except for a couple of tweaks.
This is the first one that hasn't worked.
What am I doing wrong?
~Jeff Kayser
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&qu
Hacking Go to make blockchains suck less? Hacking Go at the
intersection of students, researchers, and industry? Hacking Go to protect
privacy, democracy, or medical data? Hacking Go while eating fondue?
Apply and come find out what's better than just hacking Go!
Jeff Allen
Engineering Te
/x/sys to act like a real module.
Thanks for any pointers to an explanation of the Go team's plans for
golang.org/x packages.
-jeff
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g 1.12 changes to module vendoring?
Jeff
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Hey, I just googled "guru golang" and "go guru" and wasn't able to find
documentation on what guru can do or how it does it.
Is there documentation for it that could be made search accessible
somewhere? Or is guru deprecated and I hadn't heard?
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On Tuesday, September 11, 2018 at 11:35:05 AM UTC-4, Ian Davis wrote:
>
>
> Recent conversations here and around the proposal suggest that the type
> system isn't strong or clear enough to convey the kinds of constraints that
> we want to use. Personally I am not a fan of having nonsense, unexec
plore contracts over
other approaches.
Jeff
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Yes, but ...
First the "yes" part.
I find myself writing one line if statements, and then finding myself
annoyed at gofmt. When I write a one line if statement, there is a
presentational reason for it.
But
But such formatting would have to be an all or nothing thing if we wanted
consistency
On Sunday, December 17, 2017 at 2:32:24 PM UTC-6, jlfo...@berkeley.edu
wrote:
>
> Here's something that someone new to Go might run up against. I know I did.
>
>
Me, too!
The trivial program below, derived from "The Go Programming Language"
> book, shows two methods that differ only in the way
On Wednesday, December 13, 2017 at 5:06:01 AM UTC-6, Caleb Spare wrote:
>
> And in fact, Tv has already done that. You want
> https://github.com/tv42/zbase32.
>
Yep. That solves my immediate needs. (For what it is worth, I'm playing with
different ways of displaying public key fingerprints in th
On Wednesday, December 13, 2017 at 5:02:40 AM UTC-6, rog wrote:
>
>
> Looking at
> http://philzimmermann.com/docs/human-oriented-base-32-encoding.txt,
> it seems that zbase32 allows the encoder and decoder to agree on the
> number of bits transmitted, so if you're encoding 5 bits or less, you
>
non-standard base32 works as an encoder should.
Anyway, now that I've done more testing and have had this conversation, I'm
confident enough that this is a bug that I will file a bug for it.
Cheers,
-j
On Tuesday, December 12, 2017 at 5:13:41 PM UTC-6, Jeff Goldberg wrote:
>
>
>
&
In encoding/base32 there is, I believe, an off by one error in the
calculation of the size of the buffer needed for DecodeLen() when padding
is turned off.
// DecodedLen returns the maximum length in bytes of the decoded data //
corresponding to n bytes of base32-encoded data. func (enc *Enco
contact me directly and I'll answer as best as I can.
Thanks,
Jeff Law
Red Hat, Inc.
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to golan
Hi
A followup message ... I managed to increase the speed of my little prime
factorization program by a bit more than a factor of two, the performance
win is hardware-dependent.
After I learned how to profile the code, I discovered a few things:
- 70% of the time was taken in math/big.Mo
One more bit of progress which shaved off more time: following this page,
https://blog.golang.org/profiling-go-programs
I introduced a pair of global cache big.Int variables for the function
which was consuming most of the time; one for the smaller intermediate
results and one for the larger.
I managed to do quite a bit better (30% savings in execution time)
proceeding along these lines. Finally I got to the point where
runtime.makeslice, and underneath runtime.mallocgc, are responsible for 50%
of the run time, with no other real hotspots. Almost all of the makeslice
time is comin
locgc disappeared,
resulting in a bit more than 10% overall performance improvement in the
entire code. Now I understand better the comments about reuse of arguments
in the math/big documentation! Thanks for your suggestion.
On Tuesday, July 18, 2017 at 9:09:54 AM UTC+2, Jeff Templon wrote:
&
Hi Remy,
On Monday, July 17, 2017 at 10:39:56 PM UTC+2, Rémy Oudompheng wrote:
>
> 2017-07-17 15:56 GMT+02:00 Jeff Templon >:
>
> > it turns out that 77% of the time of the program is spent in
> > runtime.mallocgc :-) I think the reason why is stuff like this:
>
Hi Jan,
On Monday, July 17, 2017 at 4:20:21 PM UTC+2, Jan Mercl wrote:
>
>
> Just for fun: Please provide a sample in that range.
>
Sure:
medina:gofact> time ./factorize -r -M 191
factoring 3138550867693340381917894711603833208051177722232017256447
factors [ 383 7.068.569.257 39.940.132.241
Hi
Generally I'm factoring numbers that I can do in less than a day, so in the
order of 60 to 100 decimal digits.
JT
On Monday, July 17, 2017 at 4:02:29 PM UTC+2, Jan Mercl wrote:
>
> On Mon, Jul 17, 2017 at 3:57 PM Jeff Templon > wrote:
>
> > Coming back to this, n
Coming back to this, now that my Go knowledge is increasing:
On Saturday, July 8, 2017 at 5:58:59 PM UTC+2, Andy Balholm wrote:
>
> I noticed your “naive explanation” after I sent my message. But I think it
> is the real explanation.
>
it turns out that 77% of the time of the program is spent i
Hi,
On Friday, July 7, 2017 at 6:48:01 PM UTC+2, Andy Balholm wrote:
>
> That’s normal for languages like Python. The code that is actually running
> in Python is slow, but library functions are fast, because they are written
> in C.
>
Sure ... that's why I wrote the 'naive explanation' that sa
Hi
Exploring Go, 1st project is to port over my favourite playground (prime
number factorisation) from Python to Go.
Aside: I was a big Oberon-2 fan back in the day, so I'm pretty excited
about Go making possible what never was in Oberon.
Back to business: I was disappointed that Go is only
Hi, Dave.
Thank you for your clarifications about how gb works. I appreciate your
specific examples of how to get the needed code into the gb directory trees. I
didn’t know about git submodules or the gb-vendor plugin; I’ll check it out.
Jeff Kayser
Jibe Consulting | Managing Principal
etch". That is exactly what I
needed to know! I just started to use gb a couple of days ago, so I'm a newbie
with that too.
Thank you for your help. Much appreciated.
Jeff Kayser
Jibe Consulting | Managing Principal Consultant
5000 Meadows Rd. Suite 300
Lake Oswego, OR 97035
O: 503-5
might
help some other newbies. Items 6 and 7 have info I've gleaned from Internet
and Dave Cheney about package management, dependency management, package
versioning, cyclic dependencies, etc.
Jeff Kayser
Jibe Consulting | Managing Principal Consultant
5000 Meadows Rd. Suite 300
Lake Osweg
I originally wrote this up as a GitHub issue, but I want to make sure I'm
not missing anything by emailing this list first.
It would be nice if it was easier to rewrite `html/template` files but the
current tools (`html/template` and `x/net/html`) seem to have a gap between
them. Maybe there's a w
6\x00\x00@
\x00\x00\x00\x04\b\x00\x00\x00\x00\x00\x00\x0f\x00\x01\x00\x00\x1e\a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01http2_handshake_failed"
exit status 1
On Sun, Aug 28, 2016 at 6:18 PM Jeff Hodges
wrote:
> Hey, I've not been able to figure out how to enable HTTP/2 in a
Hey, I've not been able to figure out how to enable HTTP/2 in a net/http
client that needs some tls.Config settings in its Transport (like it's
needs a specific root added at run time) using only the stdlib.
Is there a way to enable HTTP/2 on clients in the stdlib that I've missed?
(Related: I th
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