Suppose I have some memory allocated on the heap, and I have
two pointers pointing to the beginning and end of a contiguous
segment
of that memory. Is there a way I can convert those two pointers
to an array slice without actually copying anything within the
segment?
Thx,
Eric
Eric:
Suppose I have some memory allocated on the heap, and I have
two pointers pointing to the beginning and end of a contiguous
segment
of that memory. Is there a way I can convert those two pointers
to an array slice without actually copying anything within the
segment?
Use something
On Thursday, 31 July 2014 at 19:43:00 UTC, bearophile wrote:
Eric:
Suppose I have some memory allocated on the heap, and I have
two pointers pointing to the beginning and end of a contiguous
segment
of that memory. Is there a way I can convert those two
pointers
to an array slice without
Eric:
Thanks. That really works. I timed doing
auto mySlice = ptr1[0 .. ptr2 - ptr1]; 1,000,000 times
versus
auto mySlice = ptr1[0 .. ptr2 - ptr1].dup; 1,000,000 times
and I am quite convinced the data is not being copied.
Take a look at the asm!
Bye,
bearophile
On Thursday, 31 July 2014 at 20:43:11 UTC, bearophile wrote:
Take a look at the asm!
Bye,
bearophile
I use DMD and Dub, how do I view the asm?
On Thursday, 31 July 2014 at 20:59:46 UTC, Vlad Levenfeld wrote:
On Thursday, 31 July 2014 at 20:43:11 UTC, bearophile wrote:
Take a look at the asm!
Bye,
bearophile
I use DMD and Dub, how do I view the asm?
Actually I did't think to look at the asm, mainly because
I've never bothered to
On Thursday, 31 July 2014 at 21:50:25 UTC, Eric wrote:
objdump -d -M intel simpleOctal
Not sure what the switches are for;
-d
disassemble - Essential if you want to, well, disassemble.
-M intel
Intel syntax - Because no one likes ATT syntax. Wikipedia has a
comparison:
