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more work on match store experiment; consume ring buffer results on begin - this experiment is not exactly the right approach, though. because the ui thread definitionally learns about these identifiers faster than the matches can (always) be completed, there is a permanent writer-going-faster-than-reader problem. the correct approach will need to account for this.

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This commit is contained in:
Ryan Fleury
2024-11-12 13:00:23 -08:00
parent 3e0c150ccb
commit 0ec6b8e8a8
1 changed files with 109 additions and 40 deletions
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src/dbgi/dbgi.c
+73 -4
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@@ -1523,6 +1523,7 @@ di_match_store_alloc(void)
internal void
di_match_store_begin(DI_MatchStore *store, DI_KeyArray keys)
{
ProfBeginFunction();
store->gen += 1;
arena_clear(store->gen_arenas[store->gen%ArrayCount(store->gen_arenas)]);
@@ -1562,6 +1563,69 @@ di_match_store_begin(DI_MatchStore *store, DI_KeyArray keys)
}
}
}
// rjf: consume & store pending results
{
U64 endt_us = os_now_microseconds() + 1000000;
for(B32 done = 0; !done;)
{
Temp scratch = scratch_begin(0, 0);
// rjf: get next result
String8 result_name = {0};
U64 result_params_hash = 0;
U64 result_dbgi_idx = 0;
RDI_SectionKind result_section_kind = RDI_SectionKind_NULL;
U32 result_idx = 0;
OS_MutexScope(store->m2u_ring_mutex)
{
U64 unconsumed_size = store->m2u_ring_write_pos - store->m2u_ring_read_pos;
if(unconsumed_size >= sizeof(U64)*4)
{
store->m2u_ring_read_pos += ring_read_struct(store->m2u_ring_base, store->m2u_ring_size, store->m2u_ring_read_pos, &result_name.size);
result_name.str = push_array(scratch.arena, U8, result_name.size);
store->m2u_ring_read_pos += ring_read(store->m2u_ring_base, store->m2u_ring_size, store->m2u_ring_read_pos, result_name.str, result_name.size);
store->m2u_ring_read_pos += 7;
store->m2u_ring_read_pos -= store->m2u_ring_read_pos%8;
store->m2u_ring_read_pos += ring_read_struct(store->m2u_ring_base, store->m2u_ring_size, store->m2u_ring_read_pos, &result_params_hash);
store->m2u_ring_read_pos += ring_read_struct(store->m2u_ring_base, store->m2u_ring_size, store->m2u_ring_read_pos, &result_dbgi_idx);
store->m2u_ring_read_pos += ring_read_struct(store->m2u_ring_base, store->m2u_ring_size, store->m2u_ring_read_pos, &result_section_kind);
store->m2u_ring_read_pos += ring_read_struct(store->m2u_ring_base, store->m2u_ring_size, store->m2u_ring_read_pos, &result_idx);
}
}
os_condition_variable_broadcast(store->m2u_ring_cv);
// rjf: store result
if(result_name.size == 0)
{
done = 1;
}
else
{
U64 result_hash = di_hash_from_string(result_name, 0);
U64 result_slot_idx = result_hash%store->match_name_slots_count;
DI_MatchNameSlot *result_slot = &store->match_name_slots[result_slot_idx];
for(DI_MatchNameNode *n = result_slot->first; n != 0; n = n->next)
{
if(n->hash == result_hash && str8_match(result_name, n->name, 0))
{
n->cmp_params_hash = result_params_hash;
n->section_kind = result_section_kind;
break;
}
}
}
// rjf: timeout
if(os_now_microseconds() >= endt_us)
{
done = 1;
}
scratch_end(scratch);
}
}
ProfEnd();
}
internal RDI_SectionKind
@@ -1682,7 +1746,7 @@ di_match_store_section_kind_from_name(DI_MatchStore *store, String8 name, U64 en
// rjf: store result
U64 result_hash = di_hash_from_string(result_name, 0);
U64 result_slot_idx = result_hash%store->match_name_slots_count;
DI_MatchNameSlot *result_slot = &store->match_name_slots[slot_idx];
DI_MatchNameSlot *result_slot = &store->match_name_slots[result_slot_idx];
for(DI_MatchNameNode *n = result_slot->first; n != 0; n = n->next)
{
if(n->hash == result_hash && str8_match(result_name, n->name, 0))
@@ -1717,12 +1781,13 @@ di_match_store_section_kind_from_name(DI_MatchStore *store, String8 name, U64 en
ASYNC_WORK_DEF(di_match_work)
{
ProfBeginFunction();
Temp scratch = scratch_begin(0, 0);
DI_MatchStore *store = (DI_MatchStore *)input;
{
//- rjf: get next name
String8 name = {0};
OS_MutexScope(store->u2m_ring_mutex) for(;;)
ProfScope("get next name") OS_MutexScope(store->u2m_ring_mutex) for(;;)
{
U64 unconsumed_size = store->u2m_ring_write_pos - store->u2m_ring_read_pos;
if(unconsumed_size >= sizeof(U64))
@@ -1741,7 +1806,7 @@ ASYNC_WORK_DEF(di_match_work)
//- rjf: read parameters
U64 params_hash = 0;
DI_KeyArray params_keys = {0};
OS_MutexScopeR(store->params_rw_mutex)
ProfScope("read parameters") OS_MutexScopeR(store->params_rw_mutex)
{
params_keys = di_key_array_copy(scratch.arena, &store->params_keys);
params_hash = store->params_hash;
@@ -1762,6 +1827,8 @@ ASYNC_WORK_DEF(di_match_work)
RDI_SectionKind_Procedures,
RDI_SectionKind_TypeNodes,
};
ProfScope("do match")
{
for EachIndex(dbgi_idx, params_keys.count)
{
DI_Scope *di_scope = di_scope_open();
@@ -1777,7 +1844,7 @@ ASYNC_WORK_DEF(di_match_work)
U32 *run = rdi_matches_from_map_node(rdi, node, &num);
for(U32 run_idx = 0; run_idx < num; run_idx += 1)
{
OS_MutexScope(store->m2u_ring_mutex) for(;;)
ProfScope("write result") OS_MutexScope(store->m2u_ring_mutex) for(;;)
{
U64 unconsumed_size = store->m2u_ring_write_pos - store->m2u_ring_read_pos;
U64 available_size = store->m2u_ring_size - unconsumed_size;
@@ -1810,6 +1877,8 @@ ASYNC_WORK_DEF(di_match_work)
di_scope_close(di_scope);
}
}
}
scratch_end(scratch);
ProfEnd();
return 0;
}