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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/dasm_cache/dasm_cache.c
+41 -40
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@@ -405,63 +405,64 @@ dasm_tick(void)
U64 stripe_idx = slot_idx%dasm_shared->stripes_count;
DASM_Slot *slot = &dasm_shared->slots[slot_idx];
DASM_Stripe *stripe = &dasm_shared->stripes[stripe_idx];
B32 slot_has_work = 0;
MutexScopeR(stripe->rw_mutex)
for(B32 write_mode = 0; write_mode <= 1; write_mode += 1)
{
for(DASM_Node *n = slot->first; n != 0; n = n->next)
B32 slot_has_work = 0;
RWMutexScope(stripe->rw_mutex, write_mode) for(DASM_Node *n = slot->first; n != 0; n = n->next)
{
// rjf: node needs eviction
if(n->scope_ref_count == 0 &&
n->last_time_touched_us+evict_threshold_us <= check_time_us &&
n->last_user_clock_idx_touched+evict_threshold_user_clocks <= check_time_user_clocks &&
ins_atomic_u64_eval(&n->working_count) == 0)
{
slot_has_work = 1;
break;
if(!write_mode)
{
break;
}
else
{
DLLRemove(slot->first, slot->last, n);
if(n->info_arena != 0)
{
arena_release(n->info_arena);
}
SLLStackPush(stripe->free_node, n);
}
}
// rjf: node needs recomputation
if(n->change_gen != 0 && n->change_gen != change_gen &&
n->last_time_requested_us+retry_threshold_us <= check_time_us &&
n->last_user_clock_idx_requested+retry_threshold_user_clocks <= check_time_user_clocks)
{
slot_has_work = 1;
break;
if(!write_mode)
{
break;
}
else
{
MutexScope(dasm_shared->req_mutex)
{
DASM_RequestNode *req_n = push_array(dasm_shared->req_arena, DASM_RequestNode, 1);
SLLQueuePush(dasm_shared->first_req, dasm_shared->last_req, req_n);
dasm_shared->req_count += 1;
req_n->v.root = n->root;
req_n->v.hash = n->hash;
req_n->v.params = n->params;
req_n->v.params.dbgi_key = di_key_copy(dasm_shared->req_arena, &req_n->v.params.dbgi_key);
}
n->last_time_requested_us = os_now_microseconds();
n->last_user_clock_idx_requested = check_time_user_clocks;
ins_atomic_u64_inc_eval(&n->working_count);
}
}
}
}
if(slot_has_work) MutexScopeW(stripe->rw_mutex)
{
for(DASM_Node *n = slot->first, *next = 0; n != 0; n = next)
if(!slot_has_work)
{
next = n->next;
if(n->scope_ref_count == 0 &&
n->last_time_touched_us+evict_threshold_us <= check_time_us &&
n->last_user_clock_idx_touched+evict_threshold_user_clocks <= check_time_user_clocks &&
ins_atomic_u64_eval(&n->working_count) == 0)
{
DLLRemove(slot->first, slot->last, n);
if(n->info_arena != 0)
{
arena_release(n->info_arena);
}
SLLStackPush(stripe->free_node, n);
}
if(n->change_gen != 0 && n->change_gen != change_gen &&
n->last_time_requested_us+retry_threshold_us <= check_time_us &&
n->last_user_clock_idx_requested+retry_threshold_user_clocks <= check_time_user_clocks)
{
MutexScope(dasm_shared->req_mutex)
{
DASM_RequestNode *req_n = push_array(dasm_shared->req_arena, DASM_RequestNode, 1);
SLLQueuePush(dasm_shared->first_req, dasm_shared->last_req, req_n);
dasm_shared->req_count += 1;
req_n->v.root = n->root;
req_n->v.hash = n->hash;
req_n->v.params = n->params;
req_n->v.params.dbgi_key = di_key_copy(dasm_shared->req_arena, &req_n->v.params.dbgi_key);
}
n->last_time_requested_us = os_now_microseconds();
n->last_user_clock_idx_requested = check_time_user_clocks;
ins_atomic_u64_inc_eval(&n->working_count);
}
break;
}
}
}