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eliminate ptr graph scope; simplify dasm cache eviction loop

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This commit is contained in:
Ryan Fleury
2025-09-18 15:59:21 -07:00
parent 4e99312b75
commit 30ae9620f9
3 changed files with 43 additions and 160 deletions
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src/ptr_graph_cache/ptr_graph_cache.c
+1 -74
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@@ -33,83 +33,11 @@ ptg_init(void)
ptg_shared->evictor_thread = thread_launch(ptg_evictor_thread__entry_point, 0);
}
////////////////////////////////
//~ rjf: User Clock
internal void
ptg_user_clock_tick(void)
{
ins_atomic_u64_inc_eval(&ptg_shared->user_clock_idx);
}
internal U64
ptg_user_clock_idx(void)
{
return ins_atomic_u64_eval(&ptg_shared->user_clock_idx);
}
////////////////////////////////
//~ rjf: Scoped Access
internal PTG_Scope *
ptg_scope_open(void)
{
if(ptg_tctx == 0)
{
Arena *arena = arena_alloc();
ptg_tctx = push_array(arena, PTG_TCTX, 1);
ptg_tctx->arena = arena;
}
PTG_Scope *scope = ptg_tctx->free_scope;
if(scope)
{
SLLStackPop(ptg_tctx->free_scope);
}
else
{
scope = push_array_no_zero(ptg_tctx->arena, PTG_Scope, 1);
}
MemoryZeroStruct(scope);
return scope;
}
internal void
ptg_scope_close(PTG_Scope *scope)
{
for(PTG_Touch *touch = scope->top_touch, *next = 0; touch != 0; touch = next)
{
next = touch->next;
ins_atomic_u64_dec_eval(&touch->node->scope_ref_count);
SLLStackPush(ptg_tctx->free_touch, touch);
}
SLLStackPush(ptg_tctx->free_scope, scope);
}
internal void
ptg_scope_touch_node__stripe_r_guarded(PTG_Scope *scope, PTG_GraphNode *node)
{
PTG_Touch *touch = ptg_tctx->free_touch;
ins_atomic_u64_inc_eval(&node->scope_ref_count);
ins_atomic_u64_eval_assign(&node->last_time_touched_us, os_now_microseconds());
ins_atomic_u64_eval_assign(&node->last_user_clock_idx_touched, ptg_user_clock_idx());
if(touch != 0)
{
SLLStackPop(ptg_tctx->free_touch);
}
else
{
touch = push_array_no_zero(ptg_tctx->arena, PTG_Touch, 1);
}
MemoryZeroStruct(touch);
touch->node = node;
SLLStackPush(scope->top_touch, touch);
}
////////////////////////////////
//~ rjf: Cache Lookups
internal PTG_Graph *
ptg_graph_from_key(PTG_Scope *scope, PTG_Key *key)
ptg_graph_from_key(Access *access, PTG_Key *key)
{
PTG_Graph *g = 0;
return g;
@@ -198,7 +126,6 @@ ptg_builder_thread__entry_point(void *p)
}
//- rjf: commit results to cache
if(got_task) MutexScopeW(stripe->rw_mutex)
{