mirror of
https://github.com/facebook/sapling.git
synced 2024-10-07 07:17:55 +03:00
66f2e5f45e
Summary:
This hardcodes several perftweaks configs that have been enabled for major FB
repos for months:
[perftweaks]
disablebranchcache = True
disablebranchcache2 = True
disableresolvingbranches = True
disableupdatebranchcacheoncommit = True
Practically, this means the branchmap is now just `{'default': heads}`. (i.e.
there are no named branches other than `default`), and branchcache is removed
(i.e. `.hg/cache` does not exist without clindex or in-repo tags).
This diff only makes easy-to-verify logic changes by assuming the configs and
removing dead code. Things can be further cleaned up. They will be done by
upcoming changes.
Most test changes are due to the fact that `.hg/cache` is no longer created.
Reviewed By: singhsrb
Differential Revision: D14179858
fbshipit-source-id: 479f7427168eb1d9614a973e273a229e50f5620a
186 lines
5.5 KiB
Perl
186 lines
5.5 KiB
Perl
revlog.parseindex must be able to parse the index file even if
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an index entry is split between two 64k blocks. The ideal test
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would be to create an index file with inline data where
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64k < size < 64k + 64 (64k is the size of the read buffer, 64 is
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the size of an index entry) and with an index entry starting right
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before the 64k block boundary, and try to read it.
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We approximate that by reducing the read buffer to 1 byte.
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$ hg init a
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$ cd a
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$ echo abc > foo
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$ hg add foo
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$ hg commit -m 'add foo'
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$ echo >> foo
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$ hg commit -m 'change foo'
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$ hg log -r 0:
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changeset: 0:7c31755bf9b5
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: add foo
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changeset: 1:26333235a41c
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tag: tip
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: change foo
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$ cat >> test.py << EOF
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> from edenscm.mercurial import changelog, vfs
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> from edenscm.mercurial.node import *
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>
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> class singlebyteread(object):
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> def __init__(self, real):
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> self.real = real
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>
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> def read(self, size=-1):
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> if size == 65536:
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> size = 1
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> return self.real.read(size)
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>
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> def __getattr__(self, key):
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> return getattr(self.real, key)
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>
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> def opener(*args):
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> o = vfs.vfs(*args)
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> def wrapper(*a):
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> f = o(*a)
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> return singlebyteread(f)
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> return wrapper
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>
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> cl = changelog.changelog(opener('.hg/store'))
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> print len(cl), 'revisions:'
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> for r in cl:
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> print short(cl.node(r))
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> EOF
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$ $PYTHON test.py
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2 revisions:
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7c31755bf9b5
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26333235a41c
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$ cd ..
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#if no-pure
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Test SEGV caused by bad revision passed to reachableroots() (issue4775):
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$ cd a
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$ $PYTHON <<EOF
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> from edenscm.mercurial import changelog, vfs
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> cl = changelog.changelog(vfs.vfs('.hg/store'))
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> print 'good heads:'
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> for head in [0, len(cl) - 1, -1]:
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> print'%s: %r' % (head, cl.reachableroots(0, [head], [0]))
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> print 'bad heads:'
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> for head in [len(cl), 10000, -2, -10000, None]:
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> print '%s:' % head,
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> try:
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> cl.reachableroots(0, [head], [0])
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> print 'uncaught buffer overflow?'
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> except (IndexError, TypeError) as inst:
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> print inst
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> print 'good roots:'
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> for root in [0, len(cl) - 1, -1]:
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> print '%s: %r' % (root, cl.reachableroots(root, [len(cl) - 1], [root]))
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> print 'out-of-range roots are ignored:'
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> for root in [len(cl), 10000, -2, -10000]:
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> print '%s: %r' % (root, cl.reachableroots(root, [len(cl) - 1], [root]))
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> print 'bad roots:'
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> for root in [None]:
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> print '%s:' % root,
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> try:
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> cl.reachableroots(root, [len(cl) - 1], [root])
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> print 'uncaught error?'
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> except TypeError as inst:
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> print inst
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> EOF
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good heads:
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0: [0]
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1: [0]
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-1: []
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bad heads:
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2: head out of range
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10000: head out of range
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-2: head out of range
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-10000: head out of range
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None: an integer is required
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good roots:
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0: [0]
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1: [1]
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-1: [-1]
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out-of-range roots are ignored:
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2: []
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10000: []
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-2: []
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-10000: []
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bad roots:
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None: an integer is required
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$ cd ..
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Test corrupted p1/p2 fields that could cause SEGV at parsers.c:
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$ mkdir invalidparent
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$ cd invalidparent
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$ hg clone --pull -q --config phases.publish=False ../a limit
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$ hg clone --pull -q --config phases.publish=False ../a segv
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$ rm -Rf limit/.hg/cache segv/.hg/cache
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$ $PYTHON <<EOF
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> data = open("limit/.hg/store/00changelog.i", "rb").read()
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> for n, p in [('limit', '\0\0\0\x02'), ('segv', '\0\x01\0\0')]:
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> # corrupt p1 at rev0 and p2 at rev1
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> d = data[:24] + p + data[28:127 + 28] + p + data[127 + 32:]
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> open(n + "/.hg/store/00changelog.i", "wb").write(d)
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> EOF
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$ hg debugindex -f1 limit/.hg/store/00changelog.i
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rev flag offset length size base link p1 p2 nodeid
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0 0000 0 63 62 0 0 2 -1 7c31755bf9b5
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1 0000 63 66 65 1 1 0 2 26333235a41c
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$ hg debugindex -f1 segv/.hg/store/00changelog.i
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rev flag offset length size base link p1 p2 nodeid
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0 0000 0 63 62 0 0 65536 -1 7c31755bf9b5
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1 0000 63 66 65 1 1 0 65536 26333235a41c
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$ cat <<EOF > test.py
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> import sys
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> from edenscm.mercurial import changelog, vfs
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> cl = changelog.changelog(vfs.vfs(sys.argv[1]))
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> n0, n1 = cl.node(0), cl.node(1)
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> ops = [
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> ('reachableroots',
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> lambda: cl.index.reachableroots2(0, [1], [0], False)),
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> ('compute_phases_map_sets', lambda: cl.computephases([[0], []])),
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> ('index_headrevs', lambda: cl.headrevs()),
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> ('find_gca_candidates', lambda: cl.commonancestorsheads(n0, n1)),
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> ('find_deepest', lambda: cl.ancestor(n0, n1)),
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> ]
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> for l, f in ops:
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> print l + ':',
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> try:
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> f()
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> print 'uncaught buffer overflow?'
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> except ValueError, inst:
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> print inst
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> EOF
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$ $PYTHON test.py limit/.hg/store
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reachableroots: parent out of range
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compute_phases_map_sets: parent out of range
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index_headrevs: parent out of range
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find_gca_candidates: parent out of range
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find_deepest: parent out of range
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$ $PYTHON test.py segv/.hg/store
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reachableroots: parent out of range
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compute_phases_map_sets: parent out of range
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index_headrevs: parent out of range
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find_gca_candidates: parent out of range
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find_deepest: parent out of range
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$ cd ..
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#endif
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