I noticed a comment saying that the intent of a code's author was unclear.
What happened is that the author forgot to put the check for whether the
thread is the calling thread (`self.getHandle() ==
std.c.pthread_self()`) in the `if (use_pthreads)`.
If the thread is the calling thread, we use `prctl` to set or get the
thread's name and it does not take a thread id because it knows the id
of the thread we're calling `getName` or `setName` from.
I have found a source saying that using `pthread_setname_np` on either the calling thread
or any other thread by thread id would work too (so we don't need to
call `prctl`) but I was not sure if that is the case on all systems
so we keep using `pthread_setname_np` if we have a
specific thread that is not the thread we're calling from, and `prctl`
otherwise.
Forcing the key to be of the same type as the sorted items used during
the search is a valid use case.
There, however, exists some cases where the key and the items are of
heterogeneous types, like searching for a code point in ordered ranges
of code points:
```zig
const CodePoint = u21;
const CodePointRange = [2]CodePoint;
const valid_ranges = &[_]CodePointRange{
// an ordered array of ranges
};
fn orderCodePointAndRange(
context: void,
code_point: CodePoint,
range: CodePointRange
) std.math.Order {
_ = context;
if (code_point < range[0]) {
return .lt;
}
if (code_point > range[1]) {
return .gt;
}
return .eq;
}
fn isValidCodePoint(code_point: CodePoint) bool {
return std.sort.binarySearch(
CodePointRange,
code_point,
valid_ranges,
void,
orderCodePointAndRange
) != null;
}
```
It is so expected that `std.sort.binarySearch` should therefore support
both homogeneous and heterogeneous keys.
Previously `executeSequenceRingBuffer()` would not verify the offset
against the number of bytes already decoded, so it would happily copy
garbage bytes rather than return an error before the window was filled.
To fix this a new `written_count` is added to the decode state that
tracks the total number of bytes decoded.
