Mercurial > hg
view tests/test-context.py @ 47349:7138c863d0a1
dirstate-v2: Skip readdir in status based on directory mtime
When calling `read_dir` during `status` and the directory is found to be
eligible for caching (see code comments), write the directory’s mtime to the
dirstate. The presence of a directory mtime in the dirstate is meaningful
and indicates eligibility.
When an eligible directory mtime is found in the dirstate and `stat()` shows
that the mtime has not changed, `status` can skip calling `read_dir` again
and instead rely on the names of child nodes in the dirstate tree.
The `tempfile` crate is used to create a temporary file in order to use its
modification time as "current time" with the same truncation as other files
and directories would have in their own modification time.
Differential Revision: https://phab.mercurial-scm.org/D10826
author | Simon Sapin <simon.sapin@octobus.net> |
---|---|
date | Fri, 28 May 2021 11:48:59 +0200 |
parents | 2372284d9457 |
children | 03ef0c8fa7d5 |
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from __future__ import absolute_import, print_function import os import stat import sys from mercurial.node import hex from mercurial import ( context, diffutil, encoding, hg, scmutil, ui as uimod, ) print_ = print def print(*args, **kwargs): """print() wrapper that flushes stdout buffers to avoid py3 buffer issues We could also just write directly to sys.stdout.buffer the way the ui object will, but this was easier for porting the test. """ print_(*args, **kwargs) sys.stdout.flush() def printb(data, end=b'\n'): out = getattr(sys.stdout, 'buffer', sys.stdout) out.write(data + end) out.flush() ui = uimod.ui.load() repo = hg.repository(ui, b'test1', create=1) os.chdir('test1') # create 'foo' with fixed time stamp f = open('foo', 'wb') f.write(b'foo\n') f.close() os.utime('foo', (1000, 1000)) # add+commit 'foo' repo[None].add([b'foo']) repo.commit(text=b'commit1', date=b"0 0") d = repo[None][b'foo'].date() if os.name == 'nt': d = d[:2] print("workingfilectx.date = (%d, %d)" % d) # test memctx with non-ASCII commit message def filectxfn(repo, memctx, path): return context.memfilectx(repo, memctx, b"foo", b"") ctx = context.memctx( repo, [b'tip', None], encoding.tolocal(b"Gr\xc3\xbcezi!"), [b"foo"], filectxfn, ) ctx.commit() for enc in "ASCII", "Latin-1", "UTF-8": encoding.encoding = enc printb(b"%-8s: %s" % (enc.encode('ascii'), repo[b"tip"].description())) # test performing a status def getfilectx(repo, memctx, f): fctx = memctx.p1()[f] data, flags = fctx.data(), fctx.flags() if f == b'foo': data += b'bar\n' return context.memfilectx( repo, memctx, f, data, b'l' in flags, b'x' in flags ) ctxa = repo[0] ctxb = context.memctx( repo, [ctxa.node(), None], b"test diff", [b"foo"], getfilectx, ctxa.user(), ctxa.date(), ) print(ctxb.status(ctxa)) # test performing a diff on a memctx diffopts = diffutil.diffallopts(repo.ui, {b'git': True}) for d in ctxb.diff(ctxa, opts=diffopts): printb(d, end=b'') # test safeness and correctness of "ctx.status()" print('= checking context.status():') # ancestor "wcctx ~ 2" actx2 = repo[b'.'] repo.wwrite(b'bar-m', b'bar-m\n', b'') repo.wwrite(b'bar-r', b'bar-r\n', b'') repo[None].add([b'bar-m', b'bar-r']) repo.commit(text=b'add bar-m, bar-r', date=b"0 0") # ancestor "wcctx ~ 1" actx1 = repo[b'.'] repo.wwrite(b'bar-m', b'bar-m bar-m\n', b'') repo.wwrite(b'bar-a', b'bar-a\n', b'') repo[None].add([b'bar-a']) repo[None].forget([b'bar-r']) # status at this point: # M bar-m # A bar-a # R bar-r # C foo from mercurial import scmutil print('== checking workingctx.status:') wctx = repo[None] print('wctx._status=%s' % (str(wctx._status))) print('=== with "pattern match":') print( actx1.status(other=wctx, match=scmutil.matchfiles(repo, [b'bar-m', b'foo'])) ) print('wctx._status=%s' % (str(wctx._status))) print( actx2.status(other=wctx, match=scmutil.matchfiles(repo, [b'bar-m', b'foo'])) ) print('wctx._status=%s' % (str(wctx._status))) print('=== with "always match" and "listclean=True":') print(actx1.status(other=wctx, listclean=True)) print('wctx._status=%s' % (str(wctx._status))) print(actx2.status(other=wctx, listclean=True)) print('wctx._status=%s' % (str(wctx._status))) print("== checking workingcommitctx.status:") wcctx = context.workingcommitctx( repo, scmutil.status([b'bar-m'], [b'bar-a'], [], [], [], [], []), text=b'', date=b'0 0', ) print('wcctx._status=%s' % (str(wcctx._status))) print('=== with "always match":') print(actx1.status(other=wcctx)) print('wcctx._status=%s' % (str(wcctx._status))) print(actx2.status(other=wcctx)) print('wcctx._status=%s' % (str(wcctx._status))) print('=== with "always match" and "listclean=True":') print(actx1.status(other=wcctx, listclean=True)) print('wcctx._status=%s' % (str(wcctx._status))) print(actx2.status(other=wcctx, listclean=True)) print('wcctx._status=%s' % (str(wcctx._status))) print('=== with "pattern match":') print( actx1.status( other=wcctx, match=scmutil.matchfiles(repo, [b'bar-m', b'foo']) ) ) print('wcctx._status=%s' % (str(wcctx._status))) print( actx2.status( other=wcctx, match=scmutil.matchfiles(repo, [b'bar-m', b'foo']) ) ) print('wcctx._status=%s' % (str(wcctx._status))) print('=== with "pattern match" and "listclean=True":') print( actx1.status( other=wcctx, match=scmutil.matchfiles(repo, [b'bar-r', b'foo']), listclean=True, ) ) print('wcctx._status=%s' % (str(wcctx._status))) print( actx2.status( other=wcctx, match=scmutil.matchfiles(repo, [b'bar-r', b'foo']), listclean=True, ) ) print('wcctx._status=%s' % (str(wcctx._status))) os.chdir('..') # test manifestlog being changed print('== commit with manifestlog invalidated') repo = hg.repository(ui, b'test2', create=1) os.chdir('test2') # make some commits for i in [b'1', b'2', b'3']: with open(i, 'wb') as f: f.write(i) status = scmutil.status([], [i], [], [], [], [], []) ctx = context.workingcommitctx( repo, status, text=i, user=b'test@test.com', date=(0, 0) ) ctx.p1().manifest() # side effect: cache manifestctx n = repo.commitctx(ctx) printb(b'commit %s: %s' % (i, hex(n))) # touch 00manifest.i mtime so storecache could expire. # repo.__dict__['manifestlog'] is deleted by transaction releasefn. st = repo.svfs.stat(b'00manifest.i') repo.svfs.utime( b'00manifest.i', (st[stat.ST_MTIME] + 1, st[stat.ST_MTIME] + 1) ) # read the file just committed try: if repo[n][i].data() != i: print('data mismatch') except Exception as ex: print('cannot read data: %r' % ex) with repo.wlock(), repo.lock(), repo.transaction(b'test'): with open(b'4', 'wb') as f: f.write(b'4') repo.dirstate.normal(b'4') repo.commit(b'4') revsbefore = len(repo.changelog) repo.invalidate(clearfilecache=True) revsafter = len(repo.changelog) if revsbefore != revsafter: print('changeset lost by repo.invalidate()')