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expand ctrl process memory cache access to allow waiting for fresh results, rather than any results; use when doing a ctrl process memory write, to prefer viewing less stale data on exact frame. also expand trap net generation with success bit, use to retry stepping commands across frames if process memory reads are hindered. abort after N retries.

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This commit is contained in:
Ryan Fleury
2025-10-07 15:44:35 -07:00
parent 2cc7f45ec1
commit 783988c0ac
7 changed files with 89 additions and 67 deletions
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src/ctrl/ctrl_core.c
+9 -9
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@@ -6114,7 +6114,7 @@ ctrl_memory_artifact_destroy(AC_Artifact artifact)
}
internal C_Key
ctrl_key_from_process_vaddr_range(CTRL_Handle process, Rng1U64 vaddr_range, B32 zero_terminated, U64 endt_us, B32 *out_is_stale)
ctrl_key_from_process_vaddr_range(CTRL_Handle process, Rng1U64 vaddr_range, B32 zero_terminated, B32 wait_for_fresh, U64 endt_us, B32 *out_is_stale)
{
ProfBeginFunction();
struct
@@ -6127,7 +6127,7 @@ ctrl_key_from_process_vaddr_range(CTRL_Handle process, Rng1U64 vaddr_range, B32
String8 key = str8_struct(&key_data);
Access *access = access_open();
AC_Artifact artifact = ac_artifact_from_key(access, key, ctrl_memory_artifact_create, ctrl_memory_artifact_destroy, endt_us,
.flags = AC_Flag_HighPriority,
.flags = AC_Flag_HighPriority | (wait_for_fresh ? AC_Flag_WaitForFresh : 0),
.gen = ctrl_mem_gen(),
.slots_count = 2048,
.stale_out = out_is_stale,
@@ -6142,7 +6142,7 @@ ctrl_key_from_process_vaddr_range(CTRL_Handle process, Rng1U64 vaddr_range, B32
//- rjf: process memory reading helpers
internal CTRL_ProcessMemorySlice
ctrl_process_memory_slice_from_vaddr_range(Arena *arena, CTRL_Handle process, Rng1U64 range, U64 endt_us)
ctrl_process_memory_slice_from_vaddr_range(Arena *arena, CTRL_Handle process, Rng1U64 range, B32 wait_for_fresh, U64 endt_us)
{
ProfBeginFunction();
CTRL_ProcessMemorySlice result = {0};
@@ -6168,7 +6168,7 @@ ctrl_process_memory_slice_from_vaddr_range(Arena *arena, CTRL_Handle process, Rn
{
U64 page_base_vaddr = page_range.min + page_idx*page_size;
B32 page_is_stale = 0;
C_Key page_key = ctrl_key_from_process_vaddr_range(process, r1u64(page_base_vaddr, page_base_vaddr+page_size), 0, endt_us, &page_is_stale);
C_Key page_key = ctrl_key_from_process_vaddr_range(process, r1u64(page_base_vaddr, page_base_vaddr+page_size), 0, wait_for_fresh, endt_us, &page_is_stale);
U128 page_hash = c_hash_from_key(page_key, 0);
U128 page_last_hash = c_hash_from_key(page_key, 1);
result.stale = (result.stale || page_is_stale);
@@ -6289,7 +6289,7 @@ ctrl_process_memory_read(CTRL_Handle process, Rng1U64 range, B32 *is_stale_out,
{
Temp scratch = scratch_begin(0, 0);
U64 needed_size = dim_1u64(range);
CTRL_ProcessMemorySlice slice = ctrl_process_memory_slice_from_vaddr_range(scratch.arena, process, range, endt_us);
CTRL_ProcessMemorySlice slice = ctrl_process_memory_slice_from_vaddr_range(scratch.arena, process, range, 0, endt_us);
B32 good = (slice.data.size >= needed_size && !slice.any_byte_bad);
if(good)
{
@@ -6322,15 +6322,15 @@ ctrl_process_write(CTRL_Handle process, Rng1U64 range, void *src)
// time.
if(result)
{
U64 endt_us = os_now_microseconds()+5000;
U64 endt_us = os_now_microseconds()+10000;
U64 page_size = os_get_system_info()->page_size; // TODO(rjf): @page_size_from_process
Rng1U64 page_range = r1u64(range.min/page_size, range.max/page_size);
Rng1U64 page_range = r1u64(range.min/page_size, (range.max+page_size-1)/page_size);
for EachInRange(page_idx, page_range)
{
Temp scratch = scratch_begin(0, 0);
ctrl_process_memory_slice_from_vaddr_range(scratch.arena, process, r1u64(page_idx*page_size, (page_idx+1)*page_size), endt_us);
CTRL_ProcessMemorySlice slice = ctrl_process_memory_slice_from_vaddr_range(scratch.arena, process, r1u64(page_idx*page_size, (page_idx+1)*page_size), 1, endt_us);
scratch_end(scratch);
if(os_now_microseconds() >= endt_us)
if(!slice.stale || os_now_microseconds() >= endt_us)
{
break;
}