rust-cpython: add panicking version of borrow_mut() and use it
The original borrow_mut() is renamed to try_borrow_mut().
Since leak_immutable() no longer incref the borrow count, the caller should
know if the underlying value is borrowed or not. No Python world is involved.
That's why we can simply use the panicking borrow_mut().
#require no-windows
$ . "$TESTDIR/remotefilelog-library.sh"
$ hg init repo
$ cd repo
$ cat >> .hg/hgrc <<EOF
> [remotefilelog]
> server=True
> EOF
$ echo x > x
$ echo y > y
$ echo z > z
$ hg commit -qAm xy
$ cd ..
$ cat > cacheprocess-logger.py <<EOF
> import os
> import shutil
> import sys
> if sys.version_info[0] > 2:
> xrange = range
> f = open('$TESTTMP/cachelog.log', 'w')
> srccache = os.path.join('$TESTTMP', 'oldhgcache')
> def log(message):
> f.write(message)
> f.flush()
> destcache = sys.argv[-1]
> try:
> while True:
> cmd = sys.stdin.readline().strip()
> log('got command %r\n' % cmd)
> if cmd == 'exit':
> sys.exit(0)
> elif cmd == 'get':
> count = int(sys.stdin.readline())
> log('client wants %r blobs\n' % count)
> wants = []
> for _ in xrange(count):
> key = sys.stdin.readline()[:-1]
> wants.append(key)
> if '\0' in key:
> _, key = key.split('\0')
> srcpath = os.path.join(srccache, key)
> if os.path.exists(srcpath):
> dest = os.path.join(destcache, key)
> destdir = os.path.dirname(dest)
> if not os.path.exists(destdir):
> os.makedirs(destdir)
> shutil.copyfile(srcpath, dest)
> else:
> # report a cache miss
> sys.stdout.write(key + '\n')
> sys.stdout.write('0\n')
> for key in sorted(wants):
> log('requested %r\n' % key)
> sys.stdout.flush()
> elif cmd == 'set':
> raise Exception('todo writing')
> else:
> raise Exception('unknown command! %r' % cmd)
> except Exception as e:
> log('Exception! %s\n' % e)
> raise
> EOF
$ cat >> $HGRCPATH <<EOF
> [remotefilelog]
> cacheprocess = python $TESTTMP/cacheprocess-logger.py
> EOF
Test cache keys and cache misses.
$ hgcloneshallow ssh://user@dummy/repo clone -q
3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)
$ cat cachelog.log
got command 'get'
client wants 3 blobs
requested 'master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0'
requested 'master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a'
requested 'master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca'
got command 'set'
Exception! todo writing
Test cache hits.
$ mv hgcache oldhgcache
$ rm cachelog.log
$ hgcloneshallow ssh://user@dummy/repo clone-cachehit -q
3 files fetched over 1 fetches - (0 misses, 100.00% hit ratio) over *s (glob)
$ cat cachelog.log | grep -v exit
got command 'get'
client wants 3 blobs
requested 'master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0'
requested 'master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a'
requested 'master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca'
$ cat >> $HGRCPATH <<EOF
> [remotefilelog]
> cacheprocess.includepath = yes
> EOF
Test cache keys and cache misses with includepath.
$ rm -r hgcache oldhgcache
$ rm cachelog.log
$ hgcloneshallow ssh://user@dummy/repo clone-withpath -q
3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)
$ cat cachelog.log
got command 'get'
client wants 3 blobs
requested 'x\x00master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0'
requested 'y\x00master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca'
requested 'z\x00master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a'
got command 'set'
Exception! todo writing
Test cache hits with includepath.
$ mv hgcache oldhgcache
$ rm cachelog.log
$ hgcloneshallow ssh://user@dummy/repo clone-withpath-cachehit -q
3 files fetched over 1 fetches - (0 misses, 100.00% hit ratio) over *s (glob)
$ cat cachelog.log | grep -v exit
got command 'get'
client wants 3 blobs
requested 'x\x00master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0'
requested 'y\x00master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca'
requested 'z\x00master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a'