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debugcommands: introduce actions to perform deterministic reads
"readavailable" is useful as a debugging device to see what data is
available on a pipe. But the mechanism isn't deterministic because
what's available on a pipe is highly conditional on timing, system
load, OS behavior, etc. This makes it not suitable for tests.
We introduce "ereadline," "read," and "eread" for performing
deterministic I/O operations (at least on blocking file descriptors).
We stop short of converting existing consumers of "readavailable"
in tests because we're working out race conditions and deadlocks
on Windows. But the goal is to eventually move tests away from
"readavailable" to these new APIs.
Differential Revision: https://phab.mercurial-scm.org/D2720
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 12 Mar 2018 15:49:02 -0700 |
parents | 4b0fc75f9403 |
children | 47ef023d0165 |
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#!/usr/bin/env python # # An example hgweb CGI script, edit as necessary # See also https://mercurial-scm.org/wiki/PublishingRepositories # Path to repo or hgweb config to serve (see 'hg help hgweb') config = "/path/to/repo/or/config" # Uncomment and adjust if Mercurial is not installed system-wide # (consult "installed modules" path from 'hg debuginstall'): #import sys; sys.path.insert(0, "/path/to/python/lib") # Uncomment to send python tracebacks to the browser if an error occurs: #import cgitb; cgitb.enable() from mercurial import demandimport; demandimport.enable() from mercurial.hgweb import hgweb, wsgicgi application = hgweb(config) wsgicgi.launch(application)