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revisionbranchcache: fall back to slow path if starting readonly (issue4531)...
revisionbranchcache: fall back to slow path if starting readonly (issue4531) Transitioning to Mercurial versions with revision branch cache could be slow as long as all operations were readonly (revset queries) and the cache would be populated but not written back. Instead, fall back to using the consistently slow path when readonly and the cache doesn't exist yet. That avoids the overhead of populating the cache without writing it back. If not readonly, it will still populate all missing entries initially. That avoids repeated writing of the cache file with small updates, and it also makes sure a fully populated cache available for the readonly operations.

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r23136:6eab50a3 default
r24159:5b4ed033 3.3.1 stable
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dumbhttp.py
46 lines | 1.6 KiB | text/x-python | PythonLexer
Mike Hommey
tests: pull common http server setup out of individual tests...
r22959 #!/usr/bin/env python
"""
Small and dumb HTTP server for use in tests.
"""
from optparse import OptionParser
Yuya Nishihara
tests: have dumbhttp.py use cmdutil.service() to wait for child to listen()...
r23136 import BaseHTTPServer, SimpleHTTPServer, signal, sys
Mike Hommey
tests: pull common http server setup out of individual tests...
r22959
Yuya Nishihara
tests: have dumbhttp.py use cmdutil.service() to wait for child to listen()...
r23136 from mercurial import cmdutil
Mike Hommey
tests: pull common http server setup out of individual tests...
r22959
Yuya Nishihara
tests: have dumbhttp.py use cmdutil.service() to wait for child to listen()...
r23136 class simplehttpservice(object):
def __init__(self, host, port):
self.address = (host, port)
def init(self):
self.httpd = BaseHTTPServer.HTTPServer(
self.address, SimpleHTTPServer.SimpleHTTPRequestHandler)
def run(self):
self.httpd.serve_forever()
Mike Hommey
tests: pull common http server setup out of individual tests...
r22959
if __name__ == '__main__':
parser = OptionParser()
parser.add_option('-p', '--port', dest='port', type='int', default=8000,
help='TCP port to listen on', metavar='PORT')
parser.add_option('-H', '--host', dest='host', default='localhost',
help='hostname or IP to listen on', metavar='HOST')
parser.add_option('--pid', dest='pid',
help='file name where the PID of the server is stored')
parser.add_option('-f', '--foreground', dest='foreground',
action='store_true',
help='do not start the HTTP server in the background')
Yuya Nishihara
tests: have dumbhttp.py use cmdutil.service() to wait for child to listen()...
r23136 parser.add_option('--daemon-pipefds')
Mike Hommey
tests: pull common http server setup out of individual tests...
r22959
(options, args) = parser.parse_args()
signal.signal(signal.SIGTERM, lambda x, y: sys.exit(0))
if options.foreground and options.pid:
parser.error("options --pid and --foreground are mutually exclusive")
Yuya Nishihara
tests: have dumbhttp.py use cmdutil.service() to wait for child to listen()...
r23136 opts = {'pid_file': options.pid,
'daemon': not options.foreground,
'daemon_pipefds': options.daemon_pipefds}
service = simplehttpservice(options.host, options.port)
cmdutil.service(opts, initfn=service.init, runfn=service.run,
runargs=[sys.executable, __file__] + sys.argv[1:])