roland/xo-alloc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

xo-alloc: retire redline-memory feature

Browse source
This commit is contained in:
Roland Conybeare 2025-08-06 22:50:29 -05:00
commit 2048de70f3
9 changed files with 111 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

12
xo-alloc/include/xo/alloc/ArenaAlloc.hpp
View file

@ -42,7 +42,9 @@ namespace xo {
* with reserved capacity @p redline_z.
**/
static up<ArenaAlloc> make(const std::string & name,
#ifdef REDLINE_MEMORY
std::size_t redline_z,
#endif
std::size_t z,
bool debug_flag);
@ -66,10 +68,16 @@ namespace xo {
virtual void clear() final override;
virtual void checkpoint() final override;
virtual std::byte * alloc(std::size_t z) final override;
#ifdef REDLINE_MEMORY
virtual void release_redline_memory() final override;
#endif
private:
ArenaAlloc(const std::string & name, std::size_t rz, std::size_t z, bool debug_flag);
ArenaAlloc(const std::string & name,
#ifdef REDLINE_MEMORY
std::size_t rz,
#endif
std::size_t z, bool debug_flag);
private:
/**
@ -91,8 +99,10 @@ namespace xo {
std::byte * free_ptr_ = nullptr;
/** soft limit: end of released memory **/
std::byte * limit_ = nullptr;
#ifdef REDLINE_MEMORY
/** amount of last-resort memory to reserve **/
std::size_t redline_z_ = 0;
#endif
/** hard limit: end of allocated memory **/
std::byte * hi_ = nullptr;
/** true to enable detailed debug logging **/

2
xo-alloc/include/xo/alloc/GC.hpp
View file

@ -194,7 +194,9 @@ namespace xo {
virtual std::byte * alloc(std::size_t z) final override;
virtual std::byte * alloc_gc_copy(std::size_t z, const void * src) final override;
#ifdef REDLINE_MEMORY
virtual void release_redline_memory() final override;
#endif
private:
/** begin GC now **/

2
xo-alloc/include/xo/alloc/IAlloc.hpp
View file

@ -76,8 +76,10 @@ namespace xo {
* Only used in @ref GC. Default implementation asserts and returns nullptr
**/
virtual std::byte * alloc_gc_copy(std::size_t z, const void * src);
#ifdef REDLINE_MEMORY
/** release last-resort reserved memory **/
virtual void release_redline_memory() = 0;
#endif
};
} /*namespace gc*/

13
xo-alloc/include/xo/alloc/ListAlloc.hpp
View file

@ -29,7 +29,9 @@ namespace xo {
ListAlloc(std::unique_ptr<ArenaAlloc> hd,
ArenaAlloc * marked,
std::size_t cz, std::size_t nz, std::size_t tz,
#ifdef REDLINE_MEMORY
bool use_redline,
#endif
bool debug_flag);
~ListAlloc();
@ -66,7 +68,9 @@ namespace xo {
virtual void clear() final override;
virtual void checkpoint() final override;
virtual std::byte * alloc(std::size_t z) final override;
#ifdef REDLINE_MEMORY
virtual void release_redline_memory() final override;
#endif
private:
/** **/
@ -79,11 +83,16 @@ namespace xo {
* from trying to converge on app working set size
**/
std::list<std::unique_ptr<ArenaAlloc>> full_l_;
std::size_t current_z_ = 0;;
std::size_t next_z_ = 0;;
/** size of current arena @ref hd_ **/
std::size_t current_z_ = 0;
/** if @ref hd_ fills, size of next arena to allocate **/
std::size_t next_z_ = 0;
/** total size of @ref hd_ + contents of @ref full_l_ **/
std::size_t total_z_ = 0;
#ifdef REDLINE_MEMORY
bool use_redline_ = false;
bool redlined_flag_ = false;
#endif
/** true to enable debug logging **/
bool debug_flag_ = false;