Sorry for my explanations.
I wanted to mean that when i use a len([]byte) <=16384
the program can read lots of megabytes and remains
at a stable state of memory usage, 5 mb.
When i use higher values, the memory grows and keep growing.
by higher value i mean anything > 16384
The slice is valid for use only until the next buffer
> modification (that is, only until the next call to a method like Read,
> Write, Reset, or Truncate). The slice aliases the buffer content at
> least until the next buffer modification, so immediate changes to the
> slice will affect the result of future reads.
>
Indeed, if i write some data on buf, i see the changes in r.
r := buf.Bytes() // read from encoder
fmt.Println(r)
buf.Truncate(0)
buf.Write([]byte("aaaaaaaaaaa"))
fmt.Println("_______")
fmt.Println(r)
I thought it was a copy.
But now i don't understand why Truncate(0) does not erase r,
as in https://golang.org/src/bytes/buffer.go?s=2594:2626#L57
there is this
b.buf = b.buf[0 : b.off+n]
Which resolves to b.buf = b.buf[0:0]
:x
Le dimanche 3 juillet 2016 21:08:01 UTC+2, Janne Snabb a écrit :
>
> On 2016-07-03 20:35, mhhcbon wrote:
>
> > r :=buf.Bytes()// read from encoder
> > buf.Truncate(0)
>
>
> I did not understand your explanation of the problem, but surely there
> is a bug in the code quoted above.
>
> Read bytes.Buffer Bytes() function documentation:
>
> func (b *Buffer) Bytes() []byte
>
> Bytes returns a slice of length b.Len() holding the unread portion of
> the buffer. The slice is valid for use only until the next buffer
> modification (that is, only until the next call to a method like Read,
> Write, Reset, or Truncate). The slice aliases the buffer content at
> least until the next buffer modification, so immediate changes to the
> slice will affect the result of future reads.
>
>
> Janne Snabb
> sn...@epipe.com <javascript:>
>
>
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