The spec says HostMakeJobCallback has to be used on the callback: https://tc39.es/ecma262/multipage/managing-memory.html#sec-finalization-registry-cleanup-callback
That makes the following (arguably contrived) example run forever until
memory is exhausted.
```js
let count = 0;
function main() {
console.log(`main! ${++count}`);
const registry = new FinalizationRegistry(() => {
globalThis.foo = main();
});
registry.register([]);
registry.register([]);
return registry;
}
main();
console.log(count);
```
That is unlike V8, which runs 0 times. This can be explained by the
difference in GC implementations and since FinRec makes GC observable,
here we are!
Fixes: https://github.com/quickjs-ng/quickjs/issues/432
Analogously to JS_WriteObject2, it allows the user to get a tab with all
the SAB objects that were read.
This can help adjust reference counts in a scenario where a SAB that was
written increased it and it's necessary to decrease it upon reading it.
- no longer pass the array length to `utf8_decode`
- add `utf8_decode_len` for border cases
- use switch based dispatch in `utf8_decode_len` to work around a gcc 12.2 optimizer bug
integer conversions:
- improve `u32toa_radix` and `u64toa_radix`, add `i32toa_radix`
- use `i32toa_radix` for small ints in `js_number_toString`
floating point conversions (`js_dtoa`):
- complete rewrite with fewer calls to `snprintf`
- remove `JS_DTOA_FORMAT`, define 4 possible modes for `js_dtoa`
- remove the radix argument in `js_dtoa`
- merge `js_dtoa1` into `js_dtoa`
- add `js_dtoa_infinite` for non finite values
- simplify sign handling
- handle locale specific decimal point transparently
helper function `js_fcvt`:
- simplify `js_fcvt`, remove `js_fcvt1`, reduce overhead
- round up manually instead of using `fesetround(FE_UPWARD)`.
helper function `js_ecvt`:
- document `js_ecvt` and `js_ecvt1` behavior
- avoid redundant `js_ecvt1` calls in `js_ecvt`
- fixed buffer contents, no buffer copies
- simplify decimal point handling
- round up manually instead of using `fesetround(FE_UPWARD)`.
miscellaneous:
- remove `CONFIG_PRINTF_RNDN`. This fixes some of the conversion errors
on Windows. Updated the tests accordingly
- this fixes a v8.sh bug on macOS: `0.5.toFixed(0)` used to produce `0` instead of `1`
- add regression tests, update test_conv unit tests
- add benchmarks for `toFixed`, `toPrecision` and `toExponential` number methods
- benchmarks show all conversions are now 40 to 45% faster (M2)
- use single test in `js_strtod` loop.
- use more explicit `ATOD_xxx` flags
- remove `ATOD_TYPE_MASK`, use `ATOD_WANT_BIG_INT` instead
- remove unused arguments `flags` and `pexponent` in `js_string_to_bigint`
- merge `js_atof` and `js_atof2`, remove `slimb_t *pexponent` argument
- simplify and document `js_atof` parser, remove cumbersome labels,
- simplify `js_parseInt` test for zero radix for `ATOD_ACCEPT_HEX_PREFIX`
- simplify `next_token` number parsing, handle legacy octal in parser only
- simplify `JS_StringToBigInt`, use flags only.
- remove unused `slimb_t exponent` token field
- add number syntax tests
