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xo-alloc: reserve virtual memory, commit pages on demand

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This commit is contained in:
Roland Conybeare 2025-08-12 00:14:30 -05:00
commit 312f7e58c7
8 changed files with 140 additions and 23 deletions
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17
xo-alloc/src/alloc/GC.cpp
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@ -115,7 +115,16 @@ namespace xo {
std::size_t
GC::size() const
{
return nursery_[role2int(role::to_space)]->size() + tenured_[role2int(role::to_space)]->size();
return nursery_to()->size() + tenured_to()->size();
}
std::size_t
GC::committed() const
{
return (nursery_to()->committed()
+ nursery_from()->committed()
+ tenured_to()->committed()
+ tenured_from()->committed());
}
std::size_t
@ -182,6 +191,12 @@ namespace xo {
return retval;
}
std::size_t
GC::nursery_to_committed() const
{
return nursery_to()->committed();
}
generation_result
GC::fromspace_generation_of(const void * x) const
{