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xo-alloc: bugfix expand: limit_ is soft, hi_ is hard. + docs

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This commit is contained in:
Roland Conybeare 2025-11-23 11:35:05 -05:00
commit a91d0d0202
2 changed files with 30 additions and 3 deletions
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6
xo-alloc/include/xo/alloc/ArenaAlloc.hpp
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@ -127,7 +127,7 @@ namespace xo {
bool debug_flag);
/** size of virtual address range reserved for this allocator **/
std::size_t reserved() const { return this->size(); }
std::size_t reserved() const { return hi_ - lo_; };
std::size_t page_size() const { return page_z_; }
std::byte * free_ptr() const { return free_ptr_; }
@ -212,7 +212,9 @@ namespace xo {
std::byte * checkpoint_ = nullptr;
/** free pointer. memory in range [@ref free_, @ref limit_) available **/
std::byte * free_ptr_ = nullptr;
/** soft limit: end of committed virtual memory **/
/** soft limit: end of committed virtual memory
* invariant: @ref limit_ = @ref lo_ + @ref committed_z_
**/
std::byte * limit_ = nullptr;
/** hard limit: end of reserved virtual memory **/
std::byte * hi_ = nullptr;