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eliminate unneeded path-renormalization in debug info cache lookup

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This commit is contained in:
Ryan Fleury
2025-06-25 10:52:29 -07:00
parent e2eb1cd6d6
commit 36f5597d8e
5 changed files with 24 additions and 19 deletions
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src/dbgi/dbgi.c
+13 -16
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@@ -462,25 +462,24 @@ di_open(DI_Key *key)
Temp scratch = scratch_begin(0, 0);
if(key->path.size != 0)
{
DI_Key key_normalized = di_normalized_key_from_key(scratch.arena, key);
U64 hash = di_hash_from_key(&key_normalized);
U64 hash = di_hash_from_key(key);
U64 slot_idx = hash%di_shared->slots_count;
U64 stripe_idx = slot_idx%di_shared->stripes_count;
DI_Slot *slot = &di_shared->slots[slot_idx];
DI_Stripe *stripe = &di_shared->stripes[stripe_idx];
log_infof("open_debug_info: {\"%S\", 0x%I64x}\n", key_normalized.path, key_normalized.min_timestamp);
log_infof("open_debug_info: {\"%S\", 0x%I64x}\n", key->path, key->min_timestamp);
OS_MutexScopeW(stripe->rw_mutex)
{
//- rjf: find existing node
DI_Node *node = di_node_from_key_slot__stripe_mutex_r_guarded(slot, &key_normalized);
DI_Node *node = di_node_from_key_slot__stripe_mutex_r_guarded(slot, key);
//- rjf: allocate node if none exists; insert into slot
if(node == 0)
{
U64 current_timestamp = os_properties_from_file_path(key_normalized.path).modified;
U64 current_timestamp = os_properties_from_file_path(key->path).modified;
if(current_timestamp == 0)
{
current_timestamp = key_normalized.min_timestamp;
current_timestamp = key->min_timestamp;
}
node = stripe->free_node;
if(node != 0)
@@ -493,7 +492,7 @@ di_open(DI_Key *key)
}
MemoryZeroStruct(node);
DLLPushBack(slot->first, slot->last, node);
String8 path_stored = di_string_alloc__stripe_mutex_w_guarded(stripe, key_normalized.path);
String8 path_stored = di_string_alloc__stripe_mutex_w_guarded(stripe, key->path);
node->key.path = path_stored;
node->key.min_timestamp = current_timestamp;
}
@@ -504,7 +503,7 @@ di_open(DI_Key *key)
node->ref_count += 1;
if(node->ref_count == 1)
{
di_u2p_enqueue_key(&key_normalized, max_U64);
di_u2p_enqueue_key(key, max_U64);
ins_atomic_u64_eval_assign(&node->is_working, 1);
DeferLoop(os_rw_mutex_drop_w(stripe->rw_mutex), os_rw_mutex_take_w(stripe->rw_mutex))
{
@@ -524,17 +523,16 @@ di_close(DI_Key *key)
Temp scratch = scratch_begin(0, 0);
if(key->path.size != 0)
{
DI_Key key_normalized = di_normalized_key_from_key(scratch.arena, key);
U64 hash = di_hash_from_key(&key_normalized);
U64 hash = di_hash_from_key(key);
U64 slot_idx = hash%di_shared->slots_count;
U64 stripe_idx = slot_idx%di_shared->stripes_count;
DI_Slot *slot = &di_shared->slots[slot_idx];
DI_Stripe *stripe = &di_shared->stripes[stripe_idx];
log_infof("close_debug_info: {\"%S\", 0x%I64x}\n", key_normalized.path, key_normalized.min_timestamp);
log_infof("close_debug_info: {\"%S\", 0x%I64x}\n", key->path, key->min_timestamp);
OS_MutexScopeW(stripe->rw_mutex)
{
//- rjf: find existing node
DI_Node *node = di_node_from_key_slot__stripe_mutex_r_guarded(slot, &key_normalized);
DI_Node *node = di_node_from_key_slot__stripe_mutex_r_guarded(slot, key);
//- rjf: node exists -> decrement reference count; release
if(node != 0)
@@ -588,8 +586,7 @@ di_rdi_from_key(DI_Scope *scope, DI_Key *key, B32 high_priority, U64 endt_us)
if(key->path.size != 0)
{
Temp scratch = scratch_begin(0, 0);
DI_Key key_normalized = di_normalized_key_from_key(scratch.arena, key);
U64 hash = di_hash_from_key(&key_normalized);
U64 hash = di_hash_from_key(key);
U64 slot_idx = hash%di_shared->slots_count;
U64 stripe_idx = slot_idx%di_shared->stripes_count;
DI_Slot *slot = &di_shared->slots[slot_idx];
@@ -597,7 +594,7 @@ di_rdi_from_key(DI_Scope *scope, DI_Key *key, B32 high_priority, U64 endt_us)
ProfScope("grab node") OS_MutexScopeR(stripe->rw_mutex) for(;;)
{
//- rjf: find existing node
DI_Node *node = di_node_from_key_slot__stripe_mutex_r_guarded(slot, &key_normalized);
DI_Node *node = di_node_from_key_slot__stripe_mutex_r_guarded(slot, key);
//- rjf: no node? this path is not opened
if(node == 0)
@@ -623,7 +620,7 @@ di_rdi_from_key(DI_Scope *scope, DI_Key *key, B32 high_priority, U64 endt_us)
if(node != 0 &&
!node->parse_done &&
!ins_atomic_u64_eval(&node->is_working) &&
di_u2p_enqueue_key(&key_normalized, endt_us))
di_u2p_enqueue_key(key, endt_us))
{
ProfScope("ask for parse")
{