avoid future implementation mischief. (Maybe not. Sometimes, general
distrust of theory leads people to distrust simple reasoning over times
from CPUs trying as hard as possible to mask DRAM latency via pre-fetch.)
(cherry picked from commit 196e747df1)
request. This can be conceived as an alternate, more capable resolution of
https://github.com/nim-lang/Nim/issues/12200
than
https://github.com/nim-lang/Nim/pull/12208
The code re-org idea here is to upgrade tablimpl.nim:`delImpl`/`delImplIdx`
to abstract client code conventions for cell emptiness & cell hashing via
three new template arguments - `makeEmpty`, `cellEmpty`, `cellHash` which
all take a single integer argument and clear a cell, test if clear or
produce the hash of the key stored at that index in `.data[]`.
Then we update the 3 call sites (`Table`, `CountTable`, `SharedTable`) of
`delImpl`/`delImplIdx` by defining define those arguments just before the
first invocation as non-exported templates.
Because `CountTable` does not save hash() outputs as `.hcode`, it needs a
new tableimpl.nim:`delImplNoHCode` which simply in-lines the hash search
when no `.hcode` field is available for "prefix compare" acceleration.
It is conceivable this new template could be used by future variants, such
as one optimized for integer keys where `hash()` and `==` are fast and
`.hcode` is both wasted space & time (though a small change to interfaces
there for a sentinel key meaning "empty" is needed for maximum efficiency).
We also eliminate the old O(n) `proc remove(CountTable...)` in favor of
simply invoking the new `delImpl*` templates and take care to correctly
handle the case where `val` is either zero for non-existent keys in `inc`
or evolves to zero over time in `[]=` or `inc`.
The only user-visible changes from the +-42 delta here are speed, iteration
order post deletes, and relaxing the `Positive` constraint on `val` in
`proc inc` again, as indicated in the `changelog.md` entry.
(cherry picked from commit b2a1944587)
Fixes#15003.
This is a serious bug which occurs when data cannot be read/sent
immediately and there are a bunch of other read/write events
pending. What happens is that the new events are dropped which
results in the case of the reported bug resulted in some data not
being sent (!).
(cherry picked from commit 1e3a0ef1e1)
This is a temporary remedy for time_t transition to 64 bit on newer
Linux libc (musl >= 1.2.0, glibc >= 2.32).
In the future we might want to move away from libc, or figure out a way
to reliably detect the real size of C types at compile time, both of
which are difficult.
(cherry picked from commit c8554ebc0c)
This commit indents the contents of a `code-block` in `httpclient.nim`
so that it displays correctly. The bug was introduced by 42a64245f8.
I did a quick search for other `code-block`s that are broken in the same
way, but the only other one I found (in `pegs.nim`) is not included in
the generated documentation.
(cherry picked from commit 1e484ed62b)
Fix an issue reported on IRC: using encodings with --dynlibOverrideAll
result in duplicated iconv definitions, causing compile errors.
This commit remove the `var` wrapper of iconv and go all out on
pointers, as it should due to how the API accepts nil. Also corrected
the API to resemble iconv(3p).
(cherry picked from commit c7dee55b87)
* The whole options module should be inline
* Use inline per proc and tag `lent` where appropriate
* Remove lent annotation (failing at compiletime)
(cherry picked from commit f71f8b0239)
* progress
* make tests green
* maybe we also want to reset pointers, dunno
* progress
* cleanup; fixes#13879 [backport:1.2]
(cherry picked from commit b35d370d88)
