Comment by Ygg2
3 days ago
If you have a place to write, then it's not zero allocation. You did an allocation.
And usually if you want maximum performance, buffered read is the way to go, which means you need a write slab allocation.
3 days ago
If you have a place to write, then it's not zero allocation. You did an allocation.
And usually if you want maximum performance, buffered read is the way to go, which means you need a write slab allocation.
> If you have a place to write, then it's not zero allocation. You did an allocation.
Where did that allocation happen? You can write into the buffer you're reading from, because the replacement data is shorter than the original data.
You have a read buffer and somewhere where you have to write to.
Even if we pretend that the read buffer is not allocating (plausible), you will have to allocate for the write source for the general case (think GiB or TiB of XML or JSON).
> You have a read buffer and somewhere where you have to write to.
The "somewhere you have to write to" is the same buffer you are reading from.
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