From: Gavin Andresen <gavinandresen@gmail.com>
To: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: [Bitcoin-development] DEBUG_LOCKORDER : early detection of potential deadlocks
Date: Wed, 17 Aug 2011 10:53:43 -0400 [thread overview]
Message-ID: <CABsx9T0nZcAnM29R8H9Diw3B3Ak2UXzE4u6zCpfCL0T8cF60mg@mail.gmail.com> (raw)
Commit 865ed8a adds a new compile-time #ifdef : DEBUG_LOCKORDER
Compile with -DDEBUG_LOCKORDER and every time a lock is acquired by a
CCriticalSection a check is made to record the order of locks and
complain if they are being acquired in an inconsistent order. Here's
what you get in debug.log when potential deadlocks are detected:
POTENTIAL DEADLOCK DETECTED
Previous lock order was:
pwallet->cs_mapWallet db.cpp:686
pwallet->cs_KeyStore db.cpp:687
cs_KeyStore keystore.cpp:74
cs_vMasterKey keystore.cpp:75
cs_KeyStore keystore.cpp:31
Current lock order is:
pwallet->cs_mapWallet db.cpp:686
pwallet->cs_KeyStore db.cpp:687
cs_KeyStore keystore.cpp:74
cs_vMasterKey keystore.cpp:75
POTENTIAL DEADLOCK DETECTED
Previous lock order was:
pnode->cs_vRecv net.cpp:1525
cs_main main.cpp:2372
cs_vSend net.h:681
Current lock order is:
pnode->cs_vSend net.cpp:1531
cs_main main.cpp:2411
I'll be working on figuring out how to eliminate these, and will be
working on some RPC stress-tests that try to exercise all the code
paths to early-detect other potential problems.
--
--
Gavin Andresen
reply other threads:[~2011-08-17 14:53 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CABsx9T0nZcAnM29R8H9Diw3B3Ak2UXzE4u6zCpfCL0T8cF60mg@mail.gmail.com \
--to=gavinandresen@gmail.com \
--cc=bitcoin-development@lists.sourceforge.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox