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extend ctrl process memory cache reads with freshness info - it is a bit too coarse grained at page granularity, that should've been easy to predict... in any case, to start addressing that, start keeping >1 hash key hash history in hash store layer, such that history may be preserved for a bit longer & diff'd with new key hashes

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This commit is contained in:
Ryan Fleury
2024-01-25 09:06:03 -08:00
parent 76b2facbf4
commit d0c3d9dc21
8 changed files with 93 additions and 39 deletions
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src/df/core/df_core.c
+14 -8
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@@ -3486,12 +3486,14 @@ df_tls_base_vaddr_from_thread(DF_Entity *thread)
U64 thread_info_addr = ctrl_tls_root_vaddr_from_thread(thread->ctrl_machine_id, thread->ctrl_handle);
U64 tls_addr_off = tls_index*addr_size;
U64 tls_addr_array = 0;
String8 tls_addr_array_data = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle, r1u64(thread_info_addr, thread_info_addr+addr_size));
CTRL_ProcessMemorySlice tls_addr_array_slice = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle, r1u64(thread_info_addr, thread_info_addr+addr_size));
String8 tls_addr_array_data = tls_addr_array_slice.data;
if(tls_addr_array_data.size >= 8)
{
MemoryCopy(&tls_addr_array, tls_addr_array_data.str, sizeof(U64));
}
String8 result_data = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle, r1u64(tls_addr_array + tls_addr_off, tls_addr_array + tls_addr_off + addr_size));
CTRL_ProcessMemorySlice result_slice = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle, r1u64(tls_addr_array + tls_addr_off, tls_addr_array + tls_addr_off + addr_size));
String8 result_data = result_slice.data;
if(result_data.size >= 8)
{
MemoryCopy(&base_vaddr, result_data.str, sizeof(U64));
@@ -3953,7 +3955,8 @@ df_eval_memory_read(void *u, void *out, U64 addr, U64 size)
Assert(process->kind == DF_EntityKind_Process);
Temp scratch = scratch_begin(0, 0);
B32 result = 0;
String8 data = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle, r1u64(addr, addr+size));
CTRL_ProcessMemorySlice slice = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle, r1u64(addr, addr+size));
String8 data = slice.data;
if(data.size == size)
{
result = 1;
@@ -4251,7 +4254,8 @@ df_value_mode_eval_from_eval(TG_Graph *graph, RADDBG_Parsed *rdbg, DF_CtrlCtx *c
Rng1U64 vaddr_range = r1u64(eval.offset, eval.offset + type_byte_size);
if(dim_1u64(vaddr_range) == type_byte_size)
{
String8 data = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle, vaddr_range);
CTRL_ProcessMemorySlice slice = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle, vaddr_range);
String8 data = slice.data;
MemoryZeroArray(eval.imm_u128);
MemoryCopy(eval.imm_u128, data.str, Min(data.size, sizeof(U64)*2));
eval.mode = EVAL_EvalMode_Value;
@@ -4328,14 +4332,16 @@ df_dynamically_typed_eval_from_eval(TG_Graph *graph, RADDBG_Parsed *rdbg, DF_Ctr
{
U64 ptr_vaddr = eval.offset;
U64 addr_size = bit_size_from_arch(arch)/8;
String8 ptr_value_memory = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle,
r1u64(ptr_vaddr, ptr_vaddr+addr_size));
CTRL_ProcessMemorySlice ptr_value_slice = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle,
r1u64(ptr_vaddr, ptr_vaddr+addr_size));
String8 ptr_value_memory = ptr_value_slice.data;
if(ptr_value_memory.size >= addr_size)
{
U64 class_base_vaddr = 0;
MemoryCopy(&class_base_vaddr, ptr_value_memory.str, addr_size);
String8 vtable_base_ptr_memory = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle,
r1u64(class_base_vaddr, class_base_vaddr+addr_size));
CTRL_ProcessMemorySlice vtable_base_ptr_slice = ctrl_query_cached_data_from_process_vaddr_range(scratch.arena, process->ctrl_machine_id, process->ctrl_handle,
r1u64(class_base_vaddr, class_base_vaddr+addr_size));
String8 vtable_base_ptr_memory = vtable_base_ptr_slice.data;
if(vtable_base_ptr_memory.size >= addr_size)
{
U64 vtable_vaddr = 0;