Mercurial > hg-stable
view tests/test-http-bundle1.t @ 26457:7e81305092a0
demandimport: replace more references to _demandmod instances
_demandmod instances may be referenced by multiple importing modules.
Before this patch, the _demandmod instance only maintained a reference
to its first consumer when using the "from X import Y" syntax. This is
because we only created a single _demandmod instance (attached to the
parent X module). If multiple modules A and B performed
"from X import Y", we'd produce a single _demandmod instance
"demandmod" with the following references:
X.Y = <demandmod>
A.Y = <demandmod>
B.Y = <demandmod>
The locals from the first consumer (A) would be stored in <demandmod1>.
When <demandmod1> was loaded, we'd look at the locals for the first
consumer and replace the symbol, if necessary. This resulted in state:
X.Y = <module>
A.Y = <module>
B.Y = <demandmod>
B's reference to Y wasn't updated and was still using the proxy object
because we just didn't record that B had a reference to <demandmod> that
needed updating!
With this patch, we add support for tracking which modules in addition
to the initial importer have a reference to the _demandmod instance and
we replace those references at module load time.
In the case of posix.py, this fixes an issue where the "encoding" module
was being proxied, resulting in hundreds of thousands of
__getattribute__ lookups on the _demandmod instance during dirstate
operations on mozilla-central, speeding up execution by many
milliseconds. There are likely several other operation that benefit from
this change as well.
The new mechanism isn't perfect: references in locals (not globals) may
likely linger. So, if there is an import inside a function and a symbol
from that module is used in a hot loop, we could have unwanted overhead
from proxying through _demandmod. Non-global imports are discouraged
anyway. So hopefully this isn't a big deal in practice. We could
potentially deploy a code checker that bans use of attribute lookups of
function-level-imported modules inside loops.
This deficiency in theory could be avoided by storing the set of globals
and locals dicts to update in the _demandmod instance. However, I tried
this and it didn't work. One reason is that some globals are _demandmod
instances. We could work around this, but it's a bit more work. There
also might be other module import foo at play. The solution as
implemented is better than what we had and IMO is good enough for the
time being.
It's worth noting that this sub-optimal behavior was made worse by the
introduction of absolute_import and its recommended "from . import X"
syntax for importing modules from the "mercurial" package. If we ever
wrote performance tests, measuring the amount of module imports and
__getattribute__ proxy calls through _demandmod instances would be
something I'd have it check.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 04 Oct 2015 11:17:43 -0700 |
parents | d19787db6fe0 |
children | d6d3cf5fda6f |
line wrap: on
line source
#require serve This test is a duplicate of 'test-http.t', feel free to factor out parts that are not bundle1/bundle2 specific. $ cat << EOF >> $HGRCPATH > [experimental] > # This test is dedicated to interaction through old bundle > bundle2-exp = False > EOF $ hg init test $ cd test $ echo foo>foo $ mkdir foo.d foo.d/bAr.hg.d foo.d/baR.d.hg $ echo foo>foo.d/foo $ echo bar>foo.d/bAr.hg.d/BaR $ echo bar>foo.d/baR.d.hg/bAR $ hg commit -A -m 1 adding foo adding foo.d/bAr.hg.d/BaR adding foo.d/baR.d.hg/bAR adding foo.d/foo $ hg serve -p $HGPORT -d --pid-file=../hg1.pid -E ../error.log $ hg --config server.uncompressed=False serve -p $HGPORT1 -d --pid-file=../hg2.pid Test server address cannot be reused #if windows $ hg serve -p $HGPORT1 2>&1 abort: cannot start server at ':$HGPORT1': * (glob) [255] #else $ hg serve -p $HGPORT1 2>&1 abort: cannot start server at ':$HGPORT1': Address already in use [255] #endif $ cd .. $ cat hg1.pid hg2.pid >> $DAEMON_PIDS clone via stream $ hg clone --uncompressed http://localhost:$HGPORT/ copy 2>&1 streaming all changes 6 files to transfer, 606 bytes of data transferred * bytes in * seconds (*/sec) (glob) searching for changes no changes found updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg verify -R copy checking changesets checking manifests crosschecking files in changesets and manifests checking files 4 files, 1 changesets, 4 total revisions try to clone via stream, should use pull instead $ hg clone --uncompressed http://localhost:$HGPORT1/ copy2 requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 4 changes to 4 files updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved clone via pull $ hg clone http://localhost:$HGPORT1/ copy-pull requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 4 changes to 4 files updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg verify -R copy-pull checking changesets checking manifests crosschecking files in changesets and manifests checking files 4 files, 1 changesets, 4 total revisions $ cd test $ echo bar > bar $ hg commit -A -d '1 0' -m 2 adding bar $ cd .. clone over http with --update $ hg clone http://localhost:$HGPORT1/ updated --update 0 requesting all changes adding changesets adding manifests adding file changes added 2 changesets with 5 changes to 5 files updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg log -r . -R updated changeset: 0:8b6053c928fe user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: 1 $ rm -rf updated incoming via HTTP $ hg clone http://localhost:$HGPORT1/ --rev 0 partial adding changesets adding manifests adding file changes added 1 changesets with 4 changes to 4 files updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd partial $ touch LOCAL $ hg ci -qAm LOCAL $ hg incoming http://localhost:$HGPORT1/ --template '{desc}\n' comparing with http://localhost:$HGPORT1/ searching for changes 2 $ cd .. pull $ cd copy-pull $ echo '[hooks]' >> .hg/hgrc $ echo "changegroup = printenv.py changegroup" >> .hg/hgrc $ hg pull pulling from http://localhost:$HGPORT1/ searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files changegroup hook: HG_NODE=5fed3813f7f5e1824344fdc9cf8f63bb662c292d HG_SOURCE=pull HG_TXNID=TXN:* HG_URL=http://localhost:$HGPORT1/ (glob) (run 'hg update' to get a working copy) $ cd .. clone from invalid URL $ hg clone http://localhost:$HGPORT/bad abort: HTTP Error 404: Not Found [255] test http authentication + use the same server to test server side streaming preference $ cd test $ cat << EOT > userpass.py > import base64 > from mercurial.hgweb import common > def perform_authentication(hgweb, req, op): > auth = req.env.get('HTTP_AUTHORIZATION') > if not auth: > raise common.ErrorResponse(common.HTTP_UNAUTHORIZED, 'who', > [('WWW-Authenticate', 'Basic Realm="mercurial"')]) > if base64.b64decode(auth.split()[1]).split(':', 1) != ['user', 'pass']: > raise common.ErrorResponse(common.HTTP_FORBIDDEN, 'no') > def extsetup(): > common.permhooks.insert(0, perform_authentication) > EOT $ hg --config extensions.x=userpass.py serve -p $HGPORT2 -d --pid-file=pid \ > --config server.preferuncompressed=True \ > --config web.push_ssl=False --config web.allow_push=* -A ../access.log $ cat pid >> $DAEMON_PIDS $ cat << EOF > get_pass.py > import getpass > def newgetpass(arg): > return "pass" > getpass.getpass = newgetpass > EOF $ hg id http://localhost:$HGPORT2/ abort: http authorization required for http://localhost:$HGPORT2/ [255] $ hg id http://localhost:$HGPORT2/ abort: http authorization required for http://localhost:$HGPORT2/ [255] $ hg id --config ui.interactive=true --config extensions.getpass=get_pass.py http://user@localhost:$HGPORT2/ http authorization required for http://localhost:$HGPORT2/ realm: mercurial user: user password: 5fed3813f7f5 $ hg id http://user:pass@localhost:$HGPORT2/ 5fed3813f7f5 $ echo '[auth]' >> .hg/hgrc $ echo 'l.schemes=http' >> .hg/hgrc $ echo 'l.prefix=lo' >> .hg/hgrc $ echo 'l.username=user' >> .hg/hgrc $ echo 'l.password=pass' >> .hg/hgrc $ hg id http://localhost:$HGPORT2/ 5fed3813f7f5 $ hg id http://localhost:$HGPORT2/ 5fed3813f7f5 $ hg id http://user@localhost:$HGPORT2/ 5fed3813f7f5 $ hg clone http://user:pass@localhost:$HGPORT2/ dest 2>&1 streaming all changes 7 files to transfer, 916 bytes of data transferred * bytes in * seconds (*/sec) (glob) searching for changes no changes found updating to branch default 5 files updated, 0 files merged, 0 files removed, 0 files unresolved --pull should override server's preferuncompressed $ hg clone --pull http://user:pass@localhost:$HGPORT2/ dest-pull 2>&1 requesting all changes adding changesets adding manifests adding file changes added 2 changesets with 5 changes to 5 files updating to branch default 5 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg id http://user2@localhost:$HGPORT2/ abort: http authorization required for http://localhost:$HGPORT2/ [255] $ hg id http://user:pass2@localhost:$HGPORT2/ abort: HTTP Error 403: no [255] $ hg -R dest tag -r tip top $ hg -R dest push http://user:pass@localhost:$HGPORT2/ pushing to http://user:***@localhost:$HGPORT2/ searching for changes remote: adding changesets remote: adding manifests remote: adding file changes remote: added 1 changesets with 1 changes to 1 files $ hg rollback -q $ cut -c38- ../access.log "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=branchmap HTTP/1.1" 200 - "GET /?cmd=stream_out HTTP/1.1" 401 - "GET /?cmd=stream_out HTTP/1.1" 200 - "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D5fed3813f7f5e1824344fdc9cf8f63bb662c292d "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=bookmarks "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D "GET /?cmd=getbundle HTTP/1.1" 200 - x-hgarg-1:common=0000000000000000000000000000000000000000&heads=5fed3813f7f5e1824344fdc9cf8f63bb662c292d "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces "GET /?cmd=listkeys HTTP/1.1" 403 - x-hgarg-1:namespace=namespaces "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D7f4e523d01f2cc3765ac8934da3d14db775ff872 "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=phases "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "GET /?cmd=branchmap HTTP/1.1" 200 - "GET /?cmd=branchmap HTTP/1.1" 200 - "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks "POST /?cmd=unbundle HTTP/1.1" 200 - x-hgarg-1:heads=686173686564+5eb5abfefeea63c80dd7553bcc3783f37e0c5524 "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases $ cd .. clone of serve with repo in root and unserved subrepo (issue2970) $ hg --cwd test init sub $ echo empty > test/sub/empty $ hg --cwd test/sub add empty $ hg --cwd test/sub commit -qm 'add empty' $ hg --cwd test/sub tag -r 0 something $ echo sub = sub > test/.hgsub $ hg --cwd test add .hgsub $ hg --cwd test commit -qm 'add subrepo' $ hg clone http://localhost:$HGPORT noslash-clone requesting all changes adding changesets adding manifests adding file changes added 3 changesets with 7 changes to 7 files updating to branch default abort: HTTP Error 404: Not Found [255] $ hg clone http://localhost:$HGPORT/ slash-clone requesting all changes adding changesets adding manifests adding file changes added 3 changesets with 7 changes to 7 files updating to branch default abort: HTTP Error 404: Not Found [255] check error log $ cat error.log