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Copy pathobjects.py
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613 lines (519 loc) · 19.9 KB
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import os
import sys
import struct
import argparse
from collections import defaultdict
from jitlog import constants as const, merge_point
PY3 = sys.version_info[0] >= 3
class FlatOp(object):
def __init__(self, opnum, opname, args, result,
descr=None, descr_number=None, failargs=None):
self.opnum = opnum
self.opname = opname
self.args = args
self.result = result
self.descr = descr
self.descr_number = descr_number
self.core_dump = None
self.failargs = failargs
self.index = -1
self.linkid = -1 # a unique id that is generated from the descr_number
def get_name(self):
return self.opname
def getindex(self):
return self.index
def is_debug(self):
return False
def has_descr(self, descr=None):
if not descr:
return self.descr is not None
return descr == self.descr_number
def is_stitched(self):
return False
def get_descr_nmr(self):
return self.descr_number
def is_guard(self):
return "guard" in self.opname
def set_core_dump(self, rel_pos, core_dump):
self.core_dump = (rel_pos, core_dump)
def get_core_dump(self, base_addr, patches, timeval):
coredump = self.core_dump[1][:]
for timepos, addr, content in patches:
if timeval < timepos:
continue # do not apply the patch
op_off = self.core_dump[0]
patch_start = (addr - base_addr) - op_off
patch_end = patch_start + len(content)
content_end = len(content)-1
if patch_end >= len(coredump):
patch_end = len(coredump)
content_end = patch_end - patch_start
coredump = coredump[:patch_start] + content[:content_end] + coredump[patch_end:]
return coredump
def __repr__(self):
suffix = ''
if self.result is not None:
suffix = "%s = " % self.result
descr = self.descr
if descr is None:
descr = ''
else:
descr = ', @' + str(descr)
return '%s%s(%s%s)' % (suffix, self.opname,
', '.join(self.args), descr)
class MergePoint(FlatOp):
def __init__(self, values):
assert isinstance(values, dict)
self.values = values
def get_name(self):
return ""
def is_debug(self):
return True
def get_scope(self):
scope = const.MP_SCOPE[0]
if scope in self.values:
return self.values[scope]
return ""
def get_source_line(self):
filename = None
lineno = None
for sem_type, value in self.values.items():
if sem_type == const.MP_FILENAME[0]:
filename = value
if sem_type == const.MP_LINENO[0]:
lineno = value
if filename is None or lineno is None:
return 0, None
return lineno, filename
def has_descr(self, descr=None):
return False
def set_core_dump(self, rel_pos, core_dump):
raise NotImplementedError
def get_core_dump(self, base_addr, patches, timeval):
raise NotImplementedError
def __repr__(self):
return 'debug_merge_point(xxx)'
class Stage(object):
def __init__(self, mark, timeval):
self.mark = mark
self.ops = []
self.merge_points = []
self.timeval = timeval
self.stitch_points = []
def getoperations(self):
return self.ops
def get_last_op(self):
if len(self.ops) == 0:
return None
return self.ops[-1]
def get_op(self, i):
if i < 0 or len(self.ops) <= i:
return None
return self.ops[i]
def append_op(self, op):
op.index = len(self.ops)
if isinstance(op, MergePoint):
self.merge_points.append(op)
else:
self.ops.append(op)
def get_ops(self):
return self.ops
def get_merge_points(self):
return self.merge_points
def get_opcount(self):
return len(self.ops)
def is_asm(self):
return self.mark == 'asm'
def __repr__(self):
return 'Stage("%s", %d ops)' % (self.mark, self.get_opcount())
from collections import namedtuple
class TraceLink(namedtuple('TraceLink', 'origin target')):
pass
class Trace(object):
def __init__(self, forest, trace_type, tick, unique_id, jd_name=None):
self.forest = forest
self.jd_name = jd_name
self.type = trace_type
self.inputargs = []
assert self.type in ('loop', 'bridge')
self.unique_id = unique_id
self.stages = {}
self.last_mark = None
self.addrs = (-1,-1)
# this saves a quadrupel for each
self.my_patches = None
self.counter = 0
self.point_counters = {}
self.merge_point_files = defaultdict(list)
self.descr_number = 0 # the descr this trace is attached to
# the trace links that lead to this trace
self.links_up = []
# the links leading from this trace
self.links = []
def link(self, op, target):
self.links.append(TraceLink(PointInTrace(self, op), PointInTrace(target, None)))
def backward_link(self, orig):
""" connect parent with this trace. orig is the point
in the parent trace, enter the first op in this trace """
assert isinstance(orig, PointInTrace)
enter = PointInTrace(self, None)
self.links_up.append(TraceLink(orig, enter))
def get_id(self):
""" Return the unique id for that trace object """
return self.unique_id
def add_up_enter_count(self, count):
self.counter += count
def get_counter_points(self):
d = {0: self.counter}
d.update(self.point_counters)
return d
def get_stitched_descr_number(self):
return self.descr_number
def get_parent(self):
for link in self.links_up:
if link.origin and link.target.op is None:
return link.origin.trace
return None
def get_first_merge_point(self):
stage = self.get_stage('opt')
if stage:
mps = stage.get_merge_points()
if len(mps) != 0:
return mps[0]
return None
def get_stage(self, type):
assert type is not None
return self.stages.get(type, None)
def start_mark(self, mark):
mark_name = 'noopt'
if mark == const.MARK_TRACE_OPT:
mark_name = 'opt'
elif mark == const.MARK_TRACE_ASM:
mark_name = 'asm'
else:
assert mark == const.MARK_TRACE
if self.last_mark == mark_name:
# NOTE unrolling
#
# this case means that the optimizer has been invoked
# twice (see compile_loop in rpython/jit/metainterp/compile.py)
# and the loop was unrolled in between.
#
# we just return here, which means the following ops will just append the loop
# ops to the preamble ops to the current stage!
return
self.last_mark = mark_name
assert mark_name is not None
if mark_name in self.stages:
return self.stages[mark_name]
tick = self.forest.timepos
stage = Stage(mark_name, tick)
self.stages[mark_name] = stage
return stage
def get_last_stage(self):
return self.stages.get(self.last_mark, None)
def set_core_dump_to_last_op(self, rel_pos, dump):
assert self.last_mark is not None
flatop = self.get_stage(self.last_mark).get_last_op()
flatop.set_core_dump(rel_pos, dump)
def add_instr(self, op):
stage = self.get_stage(self.last_mark)
stage.append_op(op)
if stage.is_asm():
if op.has_descr():
stage.stitch_points.append(PointInTrace(self, op))
nmr = op.get_descr_nmr()
if nmr == 0x0:
sys.stderr.write("descr in trace %s should not be 0x0\n" % self)
else:
dict = self.forest.descr_nmr_to_point_in_trace
# a label could already reside in that position
if nmr not in dict:
dict[nmr] = PointInTrace(self, op)
else:
pass
#sys.stderr.write("duplicate descr: 0x%x\n" % nmr)
if op.get_name() == "label":
self.forest.labels[nmr] = PointInTrace(self, op)
if op.get_name() == "jump":
self.forest.jumps[nmr] = PointInTrace(self, op)
if op.get_name() == "increment_debug_counter":
prev_op = stage.get_op(op.index-1)
# look for the previous operation, it is a label saved
# in descr_number_to_point_in_trace
if prev_op:
descr_number = prev_op.get_descr_nmr()
pit = self.forest.get_point_in_trace_by_descr(descr_number)
pit.set_inc_op(op)
if isinstance(op, MergePoint):
lineno, filename = op.get_source_line()
if filename:
self.merge_point_files[filename].append(lineno)
def is_bridge(self):
return self.type == 'bridge'
def set_inputargs(self, args):
self.inputargs = args
def set_addr_bounds(self, a, b):
self.addrs = (a,b)
if a in self.forest.addrs:
sys.stderr.write("jit log sets address bounds to a location another trace already is resident of\n")
self.forest.addrs[a] = self
def is_assembled(self):
""" return True if the jit log indicated to have assembled this trace """
return self.addrs[0] != -1
def get_addrs(self):
return tuple(self.addrs)
def contains_addr(self, addr):
return self.addrs[0] <= addr <= self.addrs[1]
def contains_patch(self, addr):
if self.addrs is None:
return False
return self.addrs[0] <= addr <= self.addrs[1]
def get_core_dump(self, timeval=-1, opslice=(0,-1)):
if timeval == -1:
timeval = 2**31-1 # a very high number
if self.my_patches is None:
self.my_patches = []
for patch in self.forest.patches:
patch_time, addr, content = patch
if self.contains_patch(addr):
self.my_patches.append(patch)
core_dump = []
start,end = opslice
if end == -1:
end = len(opslice)
ops = None
stage = self.get_stage('asm')
if not stage:
return None # no core dump!
for i, op in enumerate(stage.get_ops()):
if start <= i <= end:
dump = op.get_core_dump(self.addrs[0], self.my_patches, timeval)
core_dump.append(dump)
return ''.join(core_dump)
def get_name(self):
stage = self.get_stage('opt')
if not stage:
pass
return 'unknown'
def get_failing_guard(self):
""" return the resoperation (FlatOp) for the descr this trace is attached to """
if len(self.links_up) > 0:
for link in self.links_up:
origin = link.origin
if origin and origin.op:
return origin.op
return None
def __repr__(self):
return 'Trace(%d, 0x%x, %d)' % (self.unique_id, id(self), len(self.stages))
def iter_ranges(numbers):
if len(numbers) == 0:
return
numbers.sort()
first = numbers[0]
last = numbers[0]
for pos, i in enumerate(numbers[1:]):
if (i - first) > 50:
yield range(first, last+1)
if pos+1 < len(numbers):
last = i
first = i
else:
return
else:
last = i
yield range(first, last+1)
class PointInTrace(object):
def __init__(self, trace, op):
self.trace = trace
self.op = op
self.inc_op = None
def enters_the_trace(self):
return self.op is None
def get_operation(self):
return self.op
def set_inc_op(self, op):
if self.inc_op is None:
self.inc_op = op
def add_up_enter_count(self, count):
if not self.inc_op:
return False# this is a label!
counters = self.trace.point_counters
i = self.inc_op.index
c = counters.get(i, 0)
counters[i] = c + count
return True
def __repr__(self):
return "PointInTrace(%s, op %s)" % (self.trace, self.op)
def decode_source(source_bytes):
# copied from _bootstrap_external.py
"""Decode bytes representing source code and return the string.
Universal newline support is used in the decoding.
"""
import _io
import tokenize # To avoid bootstrap issues.
source_bytes_readline = _io.BytesIO(source_bytes).readline
encoding = tokenize.detect_encoding(source_bytes_readline)
newline_decoder = _io.IncrementalNewlineDecoder(None, True)
return newline_decoder.decode(source_bytes.decode(encoding[0]))
def read_python_source(file):
with open(file, 'rb') as fd:
data = fd.read()
if PY3:
data = decode_source(data)
return data
class TraceForest(object):
def __init__(self, version, is_32bit=False, machine=None):
self.word_size = 4 if is_32bit else 8
self.version = version
self.machine = machine
self.roots = []
self.traces = {}
self.addrs = {}
self.last_trace = None
self.resops = {}
self.timepos = 0
self.patches = []
self.stitches = {}
self.filepath = None
# a mapping from source file name -> {lineno: (indent, line)}
self.source_lines = defaultdict(dict)
self.descr_nmr_to_point_in_trace = {}
self.exc = None # holds an exception object if an error occured
self.labels = {}
self.jumps = {}
self.redirect_descrs = {}
self.linkid = 0
def next_link_id(self):
linkid = self.linkid
self.linkid += 1
return linkid
def exception_raised(self):
return self.exc
def unlink_jitlog(self):
if self.filepath and os.path.exists(self.filepath):
os.unlink(self.filepath)
self.filepath = None
def get_point_in_trace_by_descr(self, descr):
assert isinstance(descr, int)
return self.descr_nmr_to_point_in_trace.get(descr, None)
def get_source_line(self, filename, lineno):
lines = self.source_lines.get(filename, None)
if not lines:
return None, None
return lines.get(lineno, (None, None))
def copy_and_add_source_code_tags(self):
with open(self.filepath, "ab") as fd:
blob = self.encode_source_code_lines()
fd.write(blob)
def extract_source_code_lines(self):
if len(self.source_lines) > 0:
# uploading the jitlog more than once, will append source code
# to the jitlog, thus it will yield many duplicates. If there
# is already source code attached, we skip this step
return False
file_contents = {}
for _, trace in self.traces.items():
for file, lines in trace.merge_point_files.items():
if file not in file_contents:
if not os.path.exists(file):
continue
code = read_python_source(file)
file_contents[file] = code.splitlines()
split_lines = file_contents[file]
saved_lines = self.source_lines[file]
for int_range in iter_ranges(lines):
for r in int_range:
line = split_lines[r-1]
data = line.lstrip()
diff = len(line) - len(data)
indent = diff
for i in range(0, diff):
if line[i] == '\t':
indent += 7
saved_lines[r] = (indent, data)
return True
def get_trace(self, id):
return self.traces.get(id, None)
def get_trace_by_addr(self, addr):
return self.addrs.get(addr, None)
def get_trace_by_id(self, id):
return self.traces.get(id, None)
def add_trace(self, trace_type, unique_id, trace_nmr, jd_name=None):
""" Create a new trace object and attach it to the forest """
trace = Trace(self, trace_type, self.timepos, unique_id, jd_name)
trace.stamp = len(self.traces)
self.traces[unique_id] = trace
self.last_trace = trace
return trace
def stitch_bridge(self, descr_number, addr_to):
assert isinstance(descr_number, int)
bridge = self.get_trace_by_addr(addr_to)
if bridge is None:
raise Exception("bridge is None")
#assert bridge.descr_number == 0, "a bridge can only be stitched once"
#bridge.descr_number = descr_number
# TODO remove this
self.stitches[descr_number] = bridge.unique_id
assert bridge is not None, ("no trace to be found for addr 0x%x" % addr_to)
point_in_trace = self.get_point_in_trace_by_descr(descr_number)
if not point_in_trace:
sys.stderr.write("link to trace of descr 0x%x not found!\n" % descr_number)
else:
trace = point_in_trace.trace
op = point_in_trace.op
trace.link(op, bridge)
bridge.backward_link(point_in_trace)
def get_stitch_target(self, descr_number):
assert isinstance(descr_number, int)
return self.stitches.get(descr_number)
def patch_memory(self, addr, content, timeval):
self.patches.append((timeval, addr, content))
def time_tick(self):
self.timepos += 1
def is_jitlog_marker(self, marker):
if len(marker) == 0:
return False
assert len(marker) == 1
return const.MARK_JITLOG_START <= marker <= const.MARK_JITLOG_END
def encode_source_code_lines(self):
marks = []
for filename, lines in self.source_lines.items():
marks.append(const.MARK_SOURCE_CODE)
data = filename
if PY3:
data = data.encode('utf-8')
marks.append(struct.pack('<I', len(data)))
marks.append(data)
marks.append(struct.pack('<H', len(lines)))
for lineno, (indent, line) in lines.items():
marks.append(struct.pack('<HBI', lineno, indent, len(line)))
marks.append(line.encode('utf-8'))
return b''.join(marks)
def add_source_code_line(self, filename, lineno, indent, line):
dict = self.source_lines[filename]
if lineno in dict:
sys.stderr.write("dup source code. %s line %d\n" % (filename, lineno))
dict[lineno] = (indent, line)
def add_tmp_callback(self, descr_nmr, uid=-1):
self.redirect_descrs[descr_nmr] = uid
def redirect_assembler(self, descr_number, new_descr_number, trace_id):
assert isinstance(descr_number, int)
self.stitches[descr_number] = trace_id
if descr_number not in self.redirect_descrs:
pass
else:
del self.redirect_descrs[descr_number]
# setup the object properties
trace = self.get_trace_by_id(trace_id)
if trace is None:
sys.stderr.write("could not redirect_assembler 0x%x 0x%x id 0x%x\n" % (descr_number, new_descr_number, trace_id))
return
point_in_trace = self.get_point_in_trace_by_descr(descr_number)
if not point_in_trace:
sys.stderr.write("redirect call assembler: link to trace of descr 0x%x not found trace %d!\n" % (descr_number, trace_id))
else:
parent = point_in_trace.trace
op = point_in_trace.op
parent.link(op, trace)
trace.backward_link(point_in_trace)
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