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view hgext/infinitepush/schema.sql @ 45095:8e04607023e5
procutil: ensure that procutil.std{out,err}.write() writes all bytes
Python 3 offers different kind of streams and it’s not guaranteed for all of
them that calling write() writes all bytes.
When Python is started in unbuffered mode, sys.std{out,err}.buffer are
instances of io.FileIO, whose write() can write less bytes for
platform-specific reasons (e.g. Linux has a 0x7ffff000 bytes maximum and could
write less if interrupted by a signal; when writing to Windows consoles, it’s
limited to 32767 bytes to avoid the "not enough space" error). This can lead to
silent loss of data, both when using sys.std{out,err}.buffer (which may in fact
not be a buffered stream) and when using the text streams sys.std{out,err}
(I’ve created a CPython bug report for that:
https://bugs.python.org/issue41221).
Python may fix the problem at some point. For now, we implement our own wrapper
for procutil.std{out,err} that calls the raw stream’s write() method until all
bytes have been written. We don’t use sys.std{out,err} for larger writes, so I
think it’s not worth the effort to patch them.
author | Manuel Jacob <me@manueljacob.de> |
---|---|
date | Fri, 10 Jul 2020 12:27:58 +0200 |
parents | 03ff17a4bf53 |
children |
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CREATE TABLE `bookmarkstonode` ( `node` varbinary(64) NOT NULL, `bookmark` varbinary(512) NOT NULL, `reponame` varbinary(255) NOT NULL, PRIMARY KEY (`reponame`,`bookmark`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; CREATE TABLE `bundles` ( `bundle` varbinary(512) NOT NULL, `reponame` varbinary(255) NOT NULL, PRIMARY KEY (`bundle`,`reponame`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; CREATE TABLE `nodestobundle` ( `node` varbinary(64) NOT NULL, `bundle` varbinary(512) NOT NULL, `reponame` varbinary(255) NOT NULL, PRIMARY KEY (`node`,`reponame`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; CREATE TABLE `nodesmetadata` ( `node` varbinary(64) NOT NULL, `message` mediumblob NOT NULL, `p1` varbinary(64) NOT NULL, `p2` varbinary(64) DEFAULT NULL, `author` varbinary(255) NOT NULL, `committer` varbinary(255) DEFAULT NULL, `author_date` bigint(20) NOT NULL, `committer_date` bigint(20) DEFAULT NULL, `reponame` varbinary(255) NOT NULL, `optional_json_metadata` mediumblob, PRIMARY KEY (`reponame`,`node`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;