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further pass over call stack cache lookup path

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This commit is contained in:
Ryan Fleury
2025-05-17 10:16:49 -07:00
parent 7a44cbbd0d
commit 66fdfc84fc
1 changed files with 81 additions and 69 deletions
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src/ctrl/ctrl_core.c
+19 -7
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@@ -3359,25 +3359,30 @@ internal CTRL_CallStack
ctrl_call_stack_from_thread(CTRL_Scope *scope, CTRL_EntityCtx *entity_ctx, CTRL_Entity *thread, B32 high_priority, U64 endt_us) ctrl_call_stack_from_thread(CTRL_Scope *scope, CTRL_EntityCtx *entity_ctx, CTRL_Entity *thread, B32 high_priority, U64 endt_us)
{ {
CTRL_CallStack call_stack = {0}; CTRL_CallStack call_stack = {0};
{
CTRL_CallStackCache *cache = &ctrl_state->call_stack_cache; CTRL_CallStackCache *cache = &ctrl_state->call_stack_cache;
//////////////////////////////
//- rjf: unpack thread //- rjf: unpack thread
//
CTRL_Handle handle = thread->handle; CTRL_Handle handle = thread->handle;
U64 hash = ctrl_hash_from_handle(handle); U64 hash = ctrl_hash_from_handle(handle);
U64 slot_idx = hash%cache->slots_count; U64 slot_idx = hash%cache->slots_count;
U64 stripe_idx = slot_idx%cache->stripes_count; U64 stripe_idx = slot_idx%cache->stripes_count;
CTRL_CallStackCacheSlot *slot = &cache->slots[slot_idx]; CTRL_CallStackCacheSlot *slot = &cache->slots[slot_idx];
CTRL_CallStackCacheStripe *stripe = &cache->stripes[stripe_idx]; CTRL_CallStackCacheStripe *stripe = &cache->stripes[stripe_idx];
//- rjf: loop: try to grab cached call stack; request; wait
U64 reg_gen = ctrl_reg_gen(); U64 reg_gen = ctrl_reg_gen();
U64 mem_gen = ctrl_mem_gen(); U64 mem_gen = ctrl_mem_gen();
//////////////////////////////
//- rjf: loop: try to grab cached call stack; request; wait
//
OS_MutexScopeR(stripe->rw_mutex) for(;;) OS_MutexScopeR(stripe->rw_mutex) for(;;)
{ {
////////////////////////////
//- rjf: try to grab cached //- rjf: try to grab cached
//
B32 is_good = 0; B32 is_good = 0;
B32 is_stale = 0; B32 is_stale = 1;
B32 is_working = 0; B32 is_working = 0;
CTRL_CallStackCacheNode *node = 0; CTRL_CallStackCacheNode *node = 0;
{ {
@@ -3396,7 +3401,9 @@ ctrl_call_stack_from_thread(CTRL_Scope *scope, CTRL_EntityCtx *entity_ctx, CTRL_
} }
} }
////////////////////////////
//- rjf: create node if needed //- rjf: create node if needed
//
if(!is_good) OS_MutexScopeRWPromote(stripe->rw_mutex) if(!is_good) OS_MutexScopeRWPromote(stripe->rw_mutex)
{ {
node = 0; node = 0;
@@ -3416,8 +3423,10 @@ ctrl_call_stack_from_thread(CTRL_Scope *scope, CTRL_EntityCtx *entity_ctx, CTRL_
} }
} }
////////////////////////////
//- rjf: request if needed //- rjf: request if needed
if(!is_working && (!is_good || is_stale)) //
if(node != 0 && !is_working && is_stale)
{ {
if(ctrl_u2csb_enqueue_req(thread->handle, endt_us) && if(ctrl_u2csb_enqueue_req(thread->handle, endt_us) &&
async_push_work(ctrl_call_stack_build_work, .priority = high_priority ? ASYNC_Priority_High : ASYNC_Priority_Low)) async_push_work(ctrl_call_stack_build_work, .priority = high_priority ? ASYNC_Priority_High : ASYNC_Priority_Low))
@@ -3426,16 +3435,19 @@ ctrl_call_stack_from_thread(CTRL_Scope *scope, CTRL_EntityCtx *entity_ctx, CTRL_
} }
} }
////////////////////////////
//- rjf: good, or timeout? -> exit //- rjf: good, or timeout? -> exit
if((is_good && !is_stale) || os_now_microseconds() >= endt_us) //
if(!is_stale || os_now_microseconds() >= endt_us)
{ {
break; break;
} }
////////////////////////////
//- rjf: time to wait for new result? -> wait //- rjf: time to wait for new result? -> wait
//
os_condition_variable_wait_rw_r(stripe->cv, stripe->rw_mutex, endt_us); os_condition_variable_wait_rw_r(stripe->cv, stripe->rw_mutex, endt_us);
} }
}
return call_stack; return call_stack;
} }