Lets single threaded applications benefit from tracking foreign cells as
well.
After this, `SmallChunk` technically doesn't need to act as a linked
list anymore I think, gotta investigate that more though.
The likelihood of overflowing `chunk.free` also rises, so to work around
that it might make sense to check `foreignCells` instead of adjusting
free space or replace free with a counter for the local capacity.
For Nim compile I can observe a ~10mb reduction, and smaller ones for
other projects.
(cherry picked from commit 881fbb8f81)
Ref: https://github.com/nim-lang/Nim/issues/23788
There was a small leak in the above issue even after fixing the
segfault. The sizes of `free` and `acc` were changed to 32bit because
adding the `foreignCells` field will drastically increase the memory
usage for programs that hold onto memory for a long time if they stay as
64bit.
(cherry picked from commit fd1e62a7e2)
I have made `realloc` absorb unused adjacent memory, which improves the
performance. I'm investigating whether `deallocOsPages` can be used to
improve memory comsumption.
(cherry picked from commit 53855a9fa3)
fixes#23742
Before my PR, `setLen(0)` doesn't free buffer if `s != nil`, but it
allocated unnecessary memory for `strs`. This PR rectifies this
behavior. `setLen(0)` no longer allocates memory for uninitialized
strs/seqs
(cherry picked from commit 2bef08774f)
Per manual, `panics:on` affects _only_ `Defect`:s - thus `sysFatal`
should not redirect any other exceptions.
Also, when `sysFatal` is used in `nimPanics` mode, it should use regular
exception handling pipeline to ensure exception hooks are called
consistently for all raised defects.
(cherry picked from commit 58c44312af)
`{.push overflowChecks: off.}` works in backends. Though it could be
implemented as a magic function.
By inspecting the generated C code, the overflow check is eliminated in
the debug or release mode.
Likewise, the index checking is probably not needed.
(cherry picked from commit d82bc0a29f)
The documentation links for `parentDir()` and `getCurrentDir()` are
broken as they are no longer part of `std/os`. Link changed to
`std/private/ospaths2`.
(cherry picked from commit 9c155eaccc)
```nim
echo newString(8)
```
results in:
```
D:\User\test.js:25
var code_33556944 = c_33556931.toString(16);
^
TypeError: Cannot read properties of undefined (reading 'toString')
at toJSStr (D:\User\test.js:25:50)
at rawEcho (D:\User\test.js:70:16)
at Object.<anonymous> (D:\User\test.js:101:1)
at Module._compile (node:internal/modules/cjs/loader:1095:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1147:10)
at Module.load (node:internal/modules/cjs/loader:975:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
at node:internal/main/run_main_module:17:47
Node.js v17.0.1
Error: execution of an external program failed: '"C:\Program Files\nodejs\node.exe" --unhandled-rejections=strict D:\User\test.js'
```
(cherry picked from commit eadd0d72cf)
