Hello,
Anyone for a round of code golf?
I'm working on a piece of code for a streaming gRPC server and have found
myself in the position that I need to wait for a notification event (in
this case that a cache has been updated and I need to stream the results to
the client) or a context.Done ev
/* C code:
struct PKCS15_Ret {
int error_code;
int len;
};
struct PKCS15_Ret PKCS15_wrap(int hash_type, octet message, octet receive) {
int error_code = PKCS15(hashType, &mOct, &cOct);
return struct PKCS15_Ret{ error_code, cOct.len };
}
*/
func PKCS15_PLAIN(hashType, RFS int, msg []byte) ([]byt
Make your C function to accept octet parameter, instead of *octet parameter?
Then there will be no allocations.
On Wednesday, November 29, 2017 at 2:39:38 PM UTC-8, Владислав Митов wrote:
>
> So no way around 4 allocations for 2 values?
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So no way around 4 allocations for 2 values?
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The cgo checker is right: you send in a pointer with a pointer in it - mOct is
a pointer, and mOct.val is a pointer, too.
You have to malloc it.
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Hey, thanks about the swift answer.
I got to that thread but the solutions didn't worked for me. I'm still hitting
the cgo pointer check. Works if I disable it though.
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On Wed, Nov 29, 2017 at 1:00 PM, Владислав Митов
wrote:
>
> I'm writing a Go wrapper around C library and I'm trying to omit all
> possible allocations.
>
> Here is my working example -
> https://github.com/milagro-crypto/milagro-crypto-c/commit/1f070f24d83c76c5e7e5c6c548a9715438abc758#diff-a3c034
Hello,
I'm writing a Go wrapper around C library and I'm trying to omit all
possible allocations.
Here is my working example
-
https://github.com/milagro-crypto/milagro-crypto-c/commit/1f070f24d83c76c5e7e5c6c548a9715438abc758#diff-a3c034fc3f075297e9e3a7cca9ace62eR65.
There are 3 allocations t
agree!
On Wed, Nov 29, 2017 at 11:37 AM, 'Axel Wagner' via golang-nuts <
golang-nuts@googlegroups.com> wrote:
> BTW, depending on what the problem is we are actually talking about, even
> the numbers from the initial post might be fine. With those numbers,
> sorting the 2GB should take roughly ha
BTW, depending on what the problem is we are actually talking about, even
the numbers from the initial post might be fine. With those numbers,
sorting the 2GB should take roughly half an hour. A significant amount of
time, yes, but if you only need to do it once (or once a day or week or
whatever)
here's a little more detail on system / direct-type / and parallel
direct-type sorting:
celeste:double mtj$ go test -run=NONE -bench Sort
goos: darwin
goarch: amd64
pkg: double
BenchmarkSSort250-8 10 11285 ns/op
BenchmarkSSort500-8 5 31001 ns/op
BenchmarkSSort
Using a personal sort to avoid the standard sort's abstraction...
// 50331648 bytes,6291456 8-byte elements, 0.687317 seconds (48MB of
uint64)
// 50331648 bytes, 50331648 1-byte elements, 1.605258 seconds (48MB of
uint8)
// 2147483648 bytes, 268435456 8-byte elements, 35.262593 seconds (2
Hello All,
I am new to golang. I have a few queries:
I am developing: SDK which have 4-5 files, SDK has dependency on protocol
buffer.
*1. If I run the below command on SDK folder : *
$ go build
- It build all the SDK files and create "sdk.a" file in pkg
folder.
*
On Tue, Nov 28, 2017 at 10:01 PM, wrote:
>
> I have a requirement that our application needs to listen multiple TCP ports
> (mayebe some hundreds). It is not important why we have such a strange
> requirements. We can listen more ports and stop some listened ports at
> runtime.
>
> The applicatio
I'm not sure that the sort package is your your problem, here.
First, the actual size (in bytes) of the data set matters, but is not
*that* important. The number of elements is much more important. And I
wrote a naive program to measure how long it takes to sort different
in-memory data sets and ge
Ping() lets you verify a connection. It should also be used when the
initial connection is made.
https://golang.org/pkg/database/sql/#DB.Ping
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Hi,
Yes measuring it now shall get back, on a side note do we have any big
datafile parsing package part of go or some library?
The basic sort.Sort() what I have is taking 44sec for 48MB of data, I have
to parse 2G of data.
Regards,
Subu K
On Wed, Nov 29, 2017 at 8:03 PM, Jan Mercl <0xj...@gmai
On Wed, Nov 29, 2017 at 3:19 PM Subramanian K wrote:
> To run 2GB of data it takes really long time, I am trying to split these
to buckets and make it run concurrently, finally need to collate results of
all these small sorted buckets.
Have you measured and detected where the bottleneck is? If i
Hi All,
I have built a Golang application based on REST services that connects to
different databases and fetches results.
When 1 url is hit then if a connection does not already exist, it is
created. If it already exists then it is used as such. Connection is being
stored in a global variable
Hi
I am using native sort provided part of the package and to process 48MB of
slice data, it takes ~45sec.
To run 2GB of data it takes really long time, I am trying to split these to
buckets and make it run concurrently, finally need to collate results of
all these small sorted buckets.
Do we
I have a requirement that our application needs to listen multiple TCP
ports (mayebe some hundreds). It is not important why we have such a
strange requirements. We can listen more ports and stop some listened ports
at runtime.
The application is running at Linux and listen by TCP.
My basic th
Does noone have an idea? :(
Am Montag, 27. November 2017 13:37:43 UTC+1 schrieb basti skalendudler:
>
> The go tool pprof command is interactive, so I thought it is enough type
> 'png' to get the image after the benchmark is run
>
> I tested to start go tool pprof now as well during and after the
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