Analysis fixes and long lived tweaks.

crypto-aes
Scott Shawcroft 4 years ago
parent 321daa3523
commit 252aacdddf
No known key found for this signature in database
GPG Key ID: 0DFD512649C052DA
  1. 1
      .gitignore
  2. 0
      py/gc.c
  3. 2
      py/gc_long_lived.c
  4. 69
      tools/analyze_heap_dump.py
  5. 2
      tools/output_gc_until_repl.txt

1
.gitignore vendored

@ -58,3 +58,4 @@ TAGS
#################
*.orig
*.DS_Store

@ -121,7 +121,7 @@ mp_obj_t make_obj_long_lived(mp_obj_t obj, uint8_t max_depth){
} else if (MP_OBJ_IS_TYPE(obj, &mp_type_property)) {
mp_obj_property_t *prop = MP_OBJ_TO_PTR(obj);
return MP_OBJ_FROM_PTR(make_property_long_lived(prop, max_depth));
} else if (MP_OBJ_IS_TYPE(obj, &mp_type_str)) {
} else if (MP_OBJ_IS_TYPE(obj, &mp_type_str) || MP_OBJ_IS_TYPE(obj, &mp_type_bytes)) {
mp_obj_str_t *str = MP_OBJ_TO_PTR(obj);
return MP_OBJ_FROM_PTR(make_str_long_lived(str));
} else if (MP_OBJ_IS_TYPE(obj, &mp_type_type)) {

@ -135,8 +135,11 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
ram_start = symbols["_srelocate"][0]
ram_end = symbols["_estack"][0]
ram_length = ram_end - ram_start
# print(ram_length, "ram length")
# print(len(ram_dump) // ram_length, "snapshots")
if analyze_snapshots == "all":
snapshots = range(len(ram_dump) // ram_length - 1, -1, -1)
#snapshots = range(len(ram_dump) // ram_length - 1, -1, -1)
snapshots = range(4576, -1, -1)
elif analyze_snapshots == "last":
snapshots = range(len(ram_dump) // ram_length - 1, len(ram_dump) // ram_length - 2, -1)
for snapshot_num in snapshots:
@ -167,16 +170,16 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
mp_state_ctx = symbols["mp_state_ctx"][0]
manual_symbol_map["mp_state_ctx+20"] = "mp_state_ctx.vm.last_pool"
last_pool = load_pointer(mp_state_ctx + 20) # (gdb) p &mp_state_ctx.vm.last_pool
manual_symbol_map["mp_state_ctx+88"] = "mp_state_ctx.vm.dict_main.map.table"
dict_main_table = load_pointer(mp_state_ctx + 88) # (gdb) p &mp_state_ctx.vm.dict_main.map.table
manual_symbol_map["mp_state_ctx+68"] = "mp_state_ctx.vm.mp_loaded_modules_dict.map.table"
imports_table = load_pointer(mp_state_ctx + 68) # (gdb) p &mp_state_ctx.vm.mp_loaded_modules_dict.map.table
manual_symbol_map["mp_state_ctx+104"] = "mp_state_ctx.vm.dict_main.map.table"
dict_main_table = load_pointer(mp_state_ctx + 104) # (gdb) p &mp_state_ctx.vm.dict_main.map.table
manual_symbol_map["mp_state_ctx+84"] = "mp_state_ctx.vm.mp_loaded_modules_dict.map.table"
imports_table = load_pointer(mp_state_ctx + 84) # (gdb) p &mp_state_ctx.vm.mp_loaded_modules_dict.map.table
manual_symbol_map["mp_state_ctx+104"] = "mp_state_ctx.vm.mp_sys_path_obj.items"
manual_symbol_map["mp_state_ctx+120"] = "mp_state_ctx.vm.mp_sys_argv_obj.items"
manual_symbol_map["mp_state_ctx+120"] = "mp_state_ctx.vm.mp_sys_path_obj.items"
manual_symbol_map["mp_state_ctx+136"] = "mp_state_ctx.vm.mp_sys_argv_obj.items"
for i in range(READLINE_HIST_SIZE):
manual_symbol_map["mp_state_ctx+{}".format(128 + i * 4)] = "mp_state_ctx.vm.readline_hist[{}]".format(i)
manual_symbol_map["mp_state_ctx+{}".format(144 + i * 4)] = "mp_state_ctx.vm.readline_hist[{}]".format(i)
tuple_type = symbols["mp_type_tuple"][0]
type_type = symbols["mp_type_type"][0]
@ -214,8 +217,8 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
pool_start = heap_start + total_byte_len - pool_length - pool_shift
pool = heap[-pool_length-pool_shift:]
total_height = 65 * 18
total_width = (pool_length // (64 * 16)) * 90
total_height = 128 * 18
total_width = (pool_length // (128 * 16)) * 85
map_element_blocks = [dict_main_table, imports_table]
string_blocks = []
@ -255,7 +258,7 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
block_data[address] = data
for k in range(len(data) // 4):
word = struct.unpack_from("<I", data, offset=(k * 4))[0]
if word < 0x00040000 and k == 0 or address in qstr_pools:
if word < len(rom) and k == 0 or address in qstr_pools:
potential_type = word
bgcolor = "gray"
if address in qstr_pools:
@ -292,11 +295,11 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
if potential_type == dynamic_type:
if k == 0:
node.attr["fillcolor"] = "plum"
if k == 3 and 0x20000000 < word < 0x20040000:
if k == 3 and ram_start < word < ram_end:
map_element_blocks.append(word)
if potential_type in function_types:
if k == 2 and 0x20000000 < word < 0x20040000:
if k == 2 and ram_start < word < ram_end:
bytecode_blocks.append(word)
@ -338,7 +341,12 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
pool_ptr = last_pool
if not is_qstr(qstr_index):
return "object"
pool = block_data[pool_ptr]
prev, total_prev_len, alloc, length = struct.unpack_from("<IIII", pool)
qstr_index >>= 3
if qstr_index > total_prev_len + alloc:
return "invalid"
while pool_ptr != 0:
if pool_ptr > ram_start:
if pool_ptr in block_data:
@ -492,7 +500,10 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
offset = len(data)
continue
offset += 2 + qstr_len + 1
qstrs_in_chunk += " " + data[offset - qstr_len - 1: offset - 1].decode("utf-8")
try:
qstrs_in_chunk += " " + data[offset - qstr_len - 1: offset - 1].decode("utf-8")
except UnicodeDecodeError:
qstrs_in_chunk += " " + ""*qstr_len
printable_qstrs = ""
for i in range(len(qstrs_in_chunk)):
c = qstrs_in_chunk[i]
@ -515,20 +526,28 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
# First render the graph of objects on the heap.
if draw_heap_ownership:
ownership_graph.layout(prog="dot")
fn = os.path.join(output_directory, "heap_ownership{:04d}.png".format(snapshot_num))
fn = os.path.join(output_directory, "heap_ownership{:04d}.svg".format(snapshot_num))
print(fn)
ownership_graph.draw(fn)
# Clear edge positioning from ownership graph layout.
if draw_heap_ownership:
for edge in ownership_graph.iteredges():
del edge.attr["pos"]
else:
for edge in ownership_graph.edges():
ownership_graph.delete_edge(edge)
# Second, render the heap layout in memory order.
for node in ownership_graph:
for node in ownership_graph.nodes():
try:
address = int(node.name)
except ValueError:
ownership_graph.remove_node(node)
ownership_graph.remove_node(node.name)
continue
block = (address - pool_start) // 16
x = block // 64
y = 64 - block % 64
x = block // 128
y = 128 - block % 128
try:
height = float(node.attr["height"])
except:
@ -538,11 +557,6 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
# print(hex(address), block, len(block_data[address]), x, y, height)
node.attr["pos"] = "{},{}".format(x * 80, (y - (height - 0.25) * 2) * 18) # in inches
# Clear edge positioning from ownership graph layout.
if draw_heap_ownership:
for edge in ownership_graph.iteredges():
del edge.attr["pos"]
# Reformat block nodes so they are the correct size and do not have keys in them.
for block in sorted(map_element_blocks):
try:
@ -565,9 +579,9 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
else:
#print(" {}, {}".format(format(key), format(value)))
cells.append((key, ""))
if value in block_data:
edge = ownership_graph.get_edge(block, value)
edge.attr["tailport"] = str(key)
# if value in block_data:
# edge = ownership_graph.get_edge(block, value)
# edge.attr["tailport"] = str(key)
rows = ""
for i in range(len(cells) // 2):
rows += "<tr><td port=\"{}\" height=\"18\" width=\"40\">{}</td><td port=\"{}\" height=\"18\" width=\"40\">{}</td></tr>".format(
@ -586,6 +600,7 @@ def do_all_the_things(ram_filename, bin_filename, map_filename, print_block_cont
if draw_heap_layout:
fn = os.path.join(output_directory, "heap_layout{:04d}.png".format(snapshot_num))
print(fn)
#ownership_graph.write(fn+".dot")
ownership_graph.draw(fn)
if __name__ == "__main__":

@ -19,7 +19,7 @@ append binary memory ram.bin &_srelocate &_estack
continue
end
break main.c:164
break main.c:179
continue

Loading…
Cancel
Save