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make reclaim tries a percentage of the abandoned count

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daanx 2024-03-01 14:57:46 -08:00
parent cf8f73098e
commit c4f1f2e079
4 changed files with 16 additions and 5 deletions
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10
src/arena.c
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@ -733,14 +733,18 @@ bool _mi_arena_contains(const void* p) {
This is used to atomically abandon/reclaim segments
(and crosses the arena API but it is convenient to have here).
Abandoned segments still have live blocks; they get reclaimed
when a thread frees in it, or when a thread needs a fresh
when a thread frees a block in it, or when a thread needs a fresh
segment; these threads scan the abandoned segments through
the arena bitmaps.
----------------------------------------------------------- */
// Maintain these for debug purposes
// Maintain a count of all abandoned segments
static mi_decl_cache_align _Atomic(size_t)abandoned_count;
size_t _mi_arena_segment_abandoned_count(void) {
return mi_atomic_load_relaxed(&abandoned_count);
}
// reclaim a specific abandoned segment; `true` on success.
bool _mi_arena_segment_clear_abandoned(mi_memid_t memid )
{
@ -885,7 +889,7 @@ static bool mi_manage_os_memory_ex2(void* start, size_t size, bool is_large, int
// consequetive bitmaps
arena->blocks_dirty = &arena->blocks_inuse[fields]; // just after inuse bitmap
arena->blocks_abandoned = &arena->blocks_inuse[2 * fields]; // just after dirty bitmap
arena->blocks_committed = (arena->memid.is_pinned ? NULL : &arena->blocks_inuse[3*fields]); // just after abandonde bitmap
arena->blocks_committed = (arena->memid.is_pinned ? NULL : &arena->blocks_inuse[3*fields]); // just after abandoned bitmap
arena->blocks_purge = (arena->memid.is_pinned ? NULL : &arena->blocks_inuse[4*fields]); // just after committed bitmap
// initialize committed bitmap?
if (arena->blocks_committed != NULL && arena->memid.initially_committed) {