* Fail more abruptly if the bounds are not exact.
* Move bounding from Pool into Backend.
This commit makes the rounding and the bounding occur in the same
function.
* Enable smallbuddyrange to handle larger requests
The smallbuddy can now pass the larger requests up the range chain if
it cannot satisfy it itself.
* Test larger requests for meta-data.
* Rename to use Config, rather than StateHandle/Globals/Backend
* Make Backend a type on Config that contains the address space management implementation
* Make Ranges part of the Backend configuration, so we can reuse code for different ways of managing memory
* Pull the common chains of range definitions into separate files for reuse.
* Move PagemapEntry to CommonConfig
* Expose Pagemap through backend, so frontend doesn't see Pagemap directly
* Remove global Pal and use DefaultPal, where one is not pass explicitly.
Co-authored-by: David Chisnall <davidchisnall@users.noreply.github.com>
Co-authored-by: Nathaniel Filardo <105816689+nwf-msr@users.noreply.github.com>
See src/snmalloc/README.md for an explanation of the layers.
Some other cleanups on the way:
Fine-grained stats support is now gone.
It's been broken for two years, it depends on iostream (which then
causes linker failures with libstdc++) and it's collecting the wrong
stats for the new design. After discussion with @mjp41, it's better to
remove it and introduce new stats support later, rather than keep broken
code in the main branch.
Tracing was controlled with a preprocessor macro, now there's also a
CMake option.
