|
|
import binascii
|
|
|
import getopt
|
|
|
import math
|
|
|
import os
|
|
|
import random
|
|
|
import sys
|
|
|
import time
|
|
|
|
|
|
from mercurial.node import nullrev
|
|
|
from mercurial import (
|
|
|
ancestor,
|
|
|
debugcommands,
|
|
|
hg,
|
|
|
pycompat,
|
|
|
ui as uimod,
|
|
|
util,
|
|
|
)
|
|
|
|
|
|
if pycompat.ispy3:
|
|
|
long = int
|
|
|
xrange = range
|
|
|
|
|
|
|
|
|
def buildgraph(rng, nodes=100, rootprob=0.05, mergeprob=0.2, prevprob=0.7):
|
|
|
"""nodes: total number of nodes in the graph
|
|
|
rootprob: probability that a new node (not 0) will be a root
|
|
|
mergeprob: probability that, excluding a root a node will be a merge
|
|
|
prevprob: probability that p1 will be the previous node
|
|
|
|
|
|
return value is a graph represented as an adjacency list.
|
|
|
"""
|
|
|
graph = [None] * nodes
|
|
|
for i in xrange(nodes):
|
|
|
if i == 0 or rng.random() < rootprob:
|
|
|
graph[i] = [nullrev]
|
|
|
elif i == 1:
|
|
|
graph[i] = [0]
|
|
|
elif rng.random() < mergeprob:
|
|
|
if i == 2 or rng.random() < prevprob:
|
|
|
# p1 is prev
|
|
|
p1 = i - 1
|
|
|
else:
|
|
|
p1 = rng.randrange(i - 1)
|
|
|
p2 = rng.choice(list(range(0, p1)) + list(range(p1 + 1, i)))
|
|
|
graph[i] = [p1, p2]
|
|
|
elif rng.random() < prevprob:
|
|
|
graph[i] = [i - 1]
|
|
|
else:
|
|
|
graph[i] = [rng.randrange(i - 1)]
|
|
|
|
|
|
return graph
|
|
|
|
|
|
|
|
|
def buildancestorsets(graph):
|
|
|
ancs = [None] * len(graph)
|
|
|
for i in xrange(len(graph)):
|
|
|
ancs[i] = {i}
|
|
|
if graph[i] == [nullrev]:
|
|
|
continue
|
|
|
for p in graph[i]:
|
|
|
ancs[i].update(ancs[p])
|
|
|
return ancs
|
|
|
|
|
|
|
|
|
class naiveincrementalmissingancestors:
|
|
|
def __init__(self, ancs, bases):
|
|
|
self.ancs = ancs
|
|
|
self.bases = set(bases)
|
|
|
|
|
|
def addbases(self, newbases):
|
|
|
self.bases.update(newbases)
|
|
|
|
|
|
def removeancestorsfrom(self, revs):
|
|
|
for base in self.bases:
|
|
|
if base != nullrev:
|
|
|
revs.difference_update(self.ancs[base])
|
|
|
revs.discard(nullrev)
|
|
|
|
|
|
def missingancestors(self, revs):
|
|
|
res = set()
|
|
|
for rev in revs:
|
|
|
if rev != nullrev:
|
|
|
res.update(self.ancs[rev])
|
|
|
for base in self.bases:
|
|
|
if base != nullrev:
|
|
|
res.difference_update(self.ancs[base])
|
|
|
return sorted(res)
|
|
|
|
|
|
|
|
|
def test_missingancestors(seed, rng):
|
|
|
# empirically observed to take around 1 second
|
|
|
graphcount = 100
|
|
|
testcount = 10
|
|
|
inccount = 10
|
|
|
nerrs = [0]
|
|
|
# the default mu and sigma give us a nice distribution of mostly
|
|
|
# single-digit counts (including 0) with some higher ones
|
|
|
def lognormrandom(mu, sigma):
|
|
|
return int(math.floor(rng.lognormvariate(mu, sigma)))
|
|
|
|
|
|
def samplerevs(nodes, mu=1.1, sigma=0.8):
|
|
|
count = min(lognormrandom(mu, sigma), len(nodes))
|
|
|
return rng.sample(nodes, count)
|
|
|
|
|
|
def err(seed, graph, bases, seq, output, expected):
|
|
|
if nerrs[0] == 0:
|
|
|
print('seed:', hex(seed)[:-1], file=sys.stderr)
|
|
|
if gerrs[0] == 0:
|
|
|
print('graph:', graph, file=sys.stderr)
|
|
|
print('* bases:', bases, file=sys.stderr)
|
|
|
print('* seq: ', seq, file=sys.stderr)
|
|
|
print('* output: ', output, file=sys.stderr)
|
|
|
print('* expected:', expected, file=sys.stderr)
|
|
|
nerrs[0] += 1
|
|
|
gerrs[0] += 1
|
|
|
|
|
|
for g in xrange(graphcount):
|
|
|
graph = buildgraph(rng)
|
|
|
ancs = buildancestorsets(graph)
|
|
|
gerrs = [0]
|
|
|
for _ in xrange(testcount):
|
|
|
# start from nullrev to include it as a possibility
|
|
|
graphnodes = range(nullrev, len(graph))
|
|
|
bases = samplerevs(graphnodes)
|
|
|
|
|
|
# fast algorithm
|
|
|
inc = ancestor.incrementalmissingancestors(graph.__getitem__, bases)
|
|
|
# reference slow algorithm
|
|
|
naiveinc = naiveincrementalmissingancestors(ancs, bases)
|
|
|
seq = []
|
|
|
for _ in xrange(inccount):
|
|
|
if rng.random() < 0.2:
|
|
|
newbases = samplerevs(graphnodes)
|
|
|
seq.append(('addbases', newbases))
|
|
|
inc.addbases(newbases)
|
|
|
naiveinc.addbases(newbases)
|
|
|
if rng.random() < 0.4:
|
|
|
# larger set so that there are more revs to remove from
|
|
|
revs = samplerevs(graphnodes, mu=1.5)
|
|
|
seq.append(('removeancestorsfrom', revs))
|
|
|
hrevs = set(revs)
|
|
|
rrevs = set(revs)
|
|
|
inc.removeancestorsfrom(hrevs)
|
|
|
naiveinc.removeancestorsfrom(rrevs)
|
|
|
if hrevs != rrevs:
|
|
|
err(
|
|
|
seed,
|
|
|
graph,
|
|
|
bases,
|
|
|
seq,
|
|
|
sorted(hrevs),
|
|
|
sorted(rrevs),
|
|
|
)
|
|
|
else:
|
|
|
revs = samplerevs(graphnodes)
|
|
|
seq.append(('missingancestors', revs))
|
|
|
h = inc.missingancestors(revs)
|
|
|
r = naiveinc.missingancestors(revs)
|
|
|
if h != r:
|
|
|
err(seed, graph, bases, seq, h, r)
|
|
|
|
|
|
|
|
|
# graph is a dict of child->parent adjacency lists for this graph:
|
|
|
# o 13
|
|
|
# |
|
|
|
# | o 12
|
|
|
# | |
|
|
|
# | | o 11
|
|
|
# | | |\
|
|
|
# | | | | o 10
|
|
|
# | | | | |
|
|
|
# | o---+ | 9
|
|
|
# | | | | |
|
|
|
# o | | | | 8
|
|
|
# / / / /
|
|
|
# | | o | 7
|
|
|
# | | | |
|
|
|
# o---+ | 6
|
|
|
# / / /
|
|
|
# | | o 5
|
|
|
# | |/
|
|
|
# | o 4
|
|
|
# | |
|
|
|
# o | 3
|
|
|
# | |
|
|
|
# | o 2
|
|
|
# |/
|
|
|
# o 1
|
|
|
# |
|
|
|
# o 0
|
|
|
|
|
|
graph = {
|
|
|
0: [-1, -1],
|
|
|
1: [0, -1],
|
|
|
2: [1, -1],
|
|
|
3: [1, -1],
|
|
|
4: [2, -1],
|
|
|
5: [4, -1],
|
|
|
6: [4, -1],
|
|
|
7: [4, -1],
|
|
|
8: [-1, -1],
|
|
|
9: [6, 7],
|
|
|
10: [5, -1],
|
|
|
11: [3, 7],
|
|
|
12: [9, -1],
|
|
|
13: [8, -1],
|
|
|
}
|
|
|
|
|
|
|
|
|
def test_missingancestors_explicit():
|
|
|
"""A few explicit cases, easier to check for catching errors in refactors.
|
|
|
|
|
|
The bigger graph at the end has been produced by the random generator
|
|
|
above, and we have some evidence that the other tests don't cover it.
|
|
|
"""
|
|
|
for i, (bases, revs) in enumerate(
|
|
|
(
|
|
|
({1, 2, 3, 4, 7}, set(xrange(10))),
|
|
|
({10}, set({11, 12, 13, 14})),
|
|
|
({7}, set({1, 2, 3, 4, 5})),
|
|
|
)
|
|
|
):
|
|
|
print("%% removeancestorsfrom(), example %d" % (i + 1))
|
|
|
missanc = ancestor.incrementalmissingancestors(graph.get, bases)
|
|
|
missanc.removeancestorsfrom(revs)
|
|
|
print("remaining (sorted): %s" % sorted(list(revs)))
|
|
|
|
|
|
for i, (bases, revs) in enumerate(
|
|
|
(
|
|
|
({10}, {11}),
|
|
|
({11}, {10}),
|
|
|
({7}, {9, 11}),
|
|
|
)
|
|
|
):
|
|
|
print("%% missingancestors(), example %d" % (i + 1))
|
|
|
missanc = ancestor.incrementalmissingancestors(graph.get, bases)
|
|
|
print("return %s" % missanc.missingancestors(revs))
|
|
|
|
|
|
print("% removeancestorsfrom(), bigger graph")
|
|
|
vecgraph = [
|
|
|
[-1, -1],
|
|
|
[0, -1],
|
|
|
[1, 0],
|
|
|
[2, 1],
|
|
|
[3, -1],
|
|
|
[4, -1],
|
|
|
[5, 1],
|
|
|
[2, -1],
|
|
|
[7, -1],
|
|
|
[8, -1],
|
|
|
[9, -1],
|
|
|
[10, 1],
|
|
|
[3, -1],
|
|
|
[12, -1],
|
|
|
[13, -1],
|
|
|
[14, -1],
|
|
|
[4, -1],
|
|
|
[16, -1],
|
|
|
[17, -1],
|
|
|
[18, -1],
|
|
|
[19, 11],
|
|
|
[20, -1],
|
|
|
[21, -1],
|
|
|
[22, -1],
|
|
|
[23, -1],
|
|
|
[2, -1],
|
|
|
[3, -1],
|
|
|
[26, 24],
|
|
|
[27, -1],
|
|
|
[28, -1],
|
|
|
[12, -1],
|
|
|
[1, -1],
|
|
|
[1, 9],
|
|
|
[32, -1],
|
|
|
[33, -1],
|
|
|
[34, 31],
|
|
|
[35, -1],
|
|
|
[36, 26],
|
|
|
[37, -1],
|
|
|
[38, -1],
|
|
|
[39, -1],
|
|
|
[40, -1],
|
|
|
[41, -1],
|
|
|
[42, 26],
|
|
|
[0, -1],
|
|
|
[44, -1],
|
|
|
[45, 4],
|
|
|
[40, -1],
|
|
|
[47, -1],
|
|
|
[36, 0],
|
|
|
[49, -1],
|
|
|
[-1, -1],
|
|
|
[51, -1],
|
|
|
[52, -1],
|
|
|
[53, -1],
|
|
|
[14, -1],
|
|
|
[55, -1],
|
|
|
[15, -1],
|
|
|
[23, -1],
|
|
|
[58, -1],
|
|
|
[59, -1],
|
|
|
[2, -1],
|
|
|
[61, 59],
|
|
|
[62, -1],
|
|
|
[63, -1],
|
|
|
[-1, -1],
|
|
|
[65, -1],
|
|
|
[66, -1],
|
|
|
[67, -1],
|
|
|
[68, -1],
|
|
|
[37, 28],
|
|
|
[69, 25],
|
|
|
[71, -1],
|
|
|
[72, -1],
|
|
|
[50, 2],
|
|
|
[74, -1],
|
|
|
[12, -1],
|
|
|
[18, -1],
|
|
|
[77, -1],
|
|
|
[78, -1],
|
|
|
[79, -1],
|
|
|
[43, 33],
|
|
|
[81, -1],
|
|
|
[82, -1],
|
|
|
[83, -1],
|
|
|
[84, 45],
|
|
|
[85, -1],
|
|
|
[86, -1],
|
|
|
[-1, -1],
|
|
|
[88, -1],
|
|
|
[-1, -1],
|
|
|
[76, 83],
|
|
|
[44, -1],
|
|
|
[92, -1],
|
|
|
[93, -1],
|
|
|
[9, -1],
|
|
|
[95, 67],
|
|
|
[96, -1],
|
|
|
[97, -1],
|
|
|
[-1, -1],
|
|
|
]
|
|
|
problem_rev = 28
|
|
|
problem_base = 70
|
|
|
# problem_rev is a parent of problem_base, but a faulty implementation
|
|
|
# could forget to remove it.
|
|
|
bases = {60, 26, 70, 3, 96, 19, 98, 49, 97, 47, 1, 6}
|
|
|
if problem_rev not in vecgraph[problem_base] or problem_base not in bases:
|
|
|
print("Conditions have changed")
|
|
|
missanc = ancestor.incrementalmissingancestors(vecgraph.__getitem__, bases)
|
|
|
revs = {4, 12, 41, 28, 68, 38, 1, 30, 56, 44}
|
|
|
missanc.removeancestorsfrom(revs)
|
|
|
if 28 in revs:
|
|
|
print("Failed!")
|
|
|
else:
|
|
|
print("Ok")
|
|
|
|
|
|
|
|
|
def genlazyancestors(revs, stoprev=0, inclusive=False):
|
|
|
print(
|
|
|
(
|
|
|
"%% lazy ancestor set for %s, stoprev = %s, inclusive = %s"
|
|
|
% (revs, stoprev, inclusive)
|
|
|
)
|
|
|
)
|
|
|
return ancestor.lazyancestors(
|
|
|
graph.get, revs, stoprev=stoprev, inclusive=inclusive
|
|
|
)
|
|
|
|
|
|
|
|
|
def printlazyancestors(s, l):
|
|
|
print('membership: %r' % [n for n in l if n in s])
|
|
|
print('iteration: %r' % list(s))
|
|
|
|
|
|
|
|
|
def test_lazyancestors():
|
|
|
# Empty revs
|
|
|
s = genlazyancestors([])
|
|
|
printlazyancestors(s, [3, 0, -1])
|
|
|
|
|
|
# Standard example
|
|
|
s = genlazyancestors([11, 13])
|
|
|
printlazyancestors(s, [11, 13, 7, 9, 8, 3, 6, 4, 1, -1, 0])
|
|
|
|
|
|
# Standard with ancestry in the initial set (1 is ancestor of 3)
|
|
|
s = genlazyancestors([1, 3])
|
|
|
printlazyancestors(s, [1, -1, 0])
|
|
|
|
|
|
# Including revs
|
|
|
s = genlazyancestors([11, 13], inclusive=True)
|
|
|
printlazyancestors(s, [11, 13, 7, 9, 8, 3, 6, 4, 1, -1, 0])
|
|
|
|
|
|
# Test with stoprev
|
|
|
s = genlazyancestors([11, 13], stoprev=6)
|
|
|
printlazyancestors(s, [11, 13, 7, 9, 8, 3, 6, 4, 1, -1, 0])
|
|
|
s = genlazyancestors([11, 13], stoprev=6, inclusive=True)
|
|
|
printlazyancestors(s, [11, 13, 7, 9, 8, 3, 6, 4, 1, -1, 0])
|
|
|
|
|
|
# Test with stoprev >= min(initrevs)
|
|
|
s = genlazyancestors([11, 13], stoprev=11, inclusive=True)
|
|
|
printlazyancestors(s, [11, 13, 7, 9, 8, 3, 6, 4, 1, -1, 0])
|
|
|
s = genlazyancestors([11, 13], stoprev=12, inclusive=True)
|
|
|
printlazyancestors(s, [11, 13, 7, 9, 8, 3, 6, 4, 1, -1, 0])
|
|
|
|
|
|
# Contiguous chains: 5->4, 2->1 (where 1 is in seen set), 1->0
|
|
|
s = genlazyancestors([10, 1], inclusive=True)
|
|
|
printlazyancestors(s, [2, 10, 4, 5, -1, 0, 1])
|
|
|
|
|
|
|
|
|
# The C gca algorithm requires a real repo. These are textual descriptions of
|
|
|
# DAGs that have been known to be problematic, and, optionally, known pairs
|
|
|
# of revisions and their expected ancestor list.
|
|
|
dagtests = [
|
|
|
(b'+2*2*2/*3/2', {}),
|
|
|
(b'+3*3/*2*2/*4*4/*4/2*4/2*2', {}),
|
|
|
(b'+2*2*/2*4*/4*/3*2/4', {(6, 7): [3, 5]}),
|
|
|
]
|
|
|
|
|
|
|
|
|
def test_gca():
|
|
|
u = uimod.ui.load()
|
|
|
for i, (dag, tests) in enumerate(dagtests):
|
|
|
repo = hg.repository(u, b'gca%d' % i, create=1)
|
|
|
cl = repo.changelog
|
|
|
if not util.safehasattr(cl.index, 'ancestors'):
|
|
|
# C version not available
|
|
|
return
|
|
|
|
|
|
debugcommands.debugbuilddag(u, repo, dag)
|
|
|
# Compare the results of the Python and C versions. This does not
|
|
|
# include choosing a winner when more than one gca exists -- we make
|
|
|
# sure both return exactly the same set of gcas.
|
|
|
# Also compare against expected results, if available.
|
|
|
for a in cl:
|
|
|
for b in cl:
|
|
|
cgcas = sorted(cl.index.ancestors(a, b))
|
|
|
pygcas = sorted(ancestor.ancestors(cl.parentrevs, a, b))
|
|
|
expected = None
|
|
|
if (a, b) in tests:
|
|
|
expected = tests[(a, b)]
|
|
|
if cgcas != pygcas or (expected and cgcas != expected):
|
|
|
print(
|
|
|
"test_gca: for dag %s, gcas for %d, %d:" % (dag, a, b)
|
|
|
)
|
|
|
print(" C returned: %s" % cgcas)
|
|
|
print(" Python returned: %s" % pygcas)
|
|
|
if expected:
|
|
|
print(" expected: %s" % expected)
|
|
|
|
|
|
|
|
|
def main():
|
|
|
seed = None
|
|
|
opts, args = getopt.getopt(sys.argv[1:], 's:', ['seed='])
|
|
|
for o, a in opts:
|
|
|
if o in ('-s', '--seed'):
|
|
|
seed = long(a, base=0) # accepts base 10 or 16 strings
|
|
|
|
|
|
if seed is None:
|
|
|
try:
|
|
|
seed = long(binascii.hexlify(os.urandom(16)), 16)
|
|
|
except AttributeError:
|
|
|
seed = long(time.time() * 1000)
|
|
|
|
|
|
rng = random.Random(seed)
|
|
|
test_missingancestors_explicit()
|
|
|
test_missingancestors(seed, rng)
|
|
|
test_lazyancestors()
|
|
|
test_gca()
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
main()
|
|
|
|