Repository navigation
Expand file tree
/
Copy pathobjects.py
More file actions
613 lines (519 loc) · 19.9 KB
/
Copy pathobjects.py
File metadata and controls
613 lines (519 loc) · 19.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
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)