Summary: amfnd: process su instantiation in a separate thread [#517]
Review request for Trac Ticket(s): #517
Peer Reviewer(s): Amf Developers
Pull request to: <<LIST THE PERSON WITH PUSH ACCESS HERE>>
Affected branch(es): All
Development branch: Default
--------------------------------
Impacted area Impact y/n
--------------------------------
Docs n
Build system n
RPM/packaging n
Configuration files n
Startup scripts n
SAF services y
OpenSAF services n
Core libraries n
Samples n
Tests n
Other n
Comments (indicate scope for each "y" above):
---------------------------------------------
<<EXPLAIN/COMMENT THE PATCH SERIES HERE>>
changeset e0e5932d6346092fb5cc215954a0cc3119684a23
Author: Nagendra Kumar<nagendr...@oracle.com>
Date: Tue, 10 May 2016 20:59:40 +0530
amfnd: process su instantiation in a separate thread [#517] If immnd is
down
and Amf decides to instantiate some SU, then there is a deadlock between
Amfnd and Imm. Amf calls Imm api to read imm attributes during SU
instantiation and stuck because Imm is down. Imm waits for Amfnd to
instantiate/restart it. So, both waits for each other. This is a
deadlock.
So, the fix bypasses main thread for information reading and does
process of
SU instantiation in a main thread. So, when Imm is down, its
instantiation/restart happens in the main thread. If any SU
instantiation
request comes, then Amfnd routes that request in a separate thread, that
threads stuck in Imm api call untill Imm is not restarted and responds
to
Imm api call. This obviates the deadlock between Amfnd and Imm.
Added Files:
------------
osaf/services/saf/amf/amfnd/imm.cc
Complete diffstat:
------------------
osaf/services/saf/amf/amfnd/Makefile.am | 3 +-
osaf/services/saf/amf/amfnd/amfnd.cc | 4 +-
osaf/services/saf/amf/amfnd/clc.cc | 13 +++--
osaf/services/saf/amf/amfnd/clm.cc | 4 +-
osaf/services/saf/amf/amfnd/compdb.cc | 46 +++++++++++++++++++--
osaf/services/saf/amf/amfnd/di.cc | 12 ++--
osaf/services/saf/amf/amfnd/err.cc | 12 ++--
osaf/services/saf/amf/amfnd/evt.cc | 9 ++++
osaf/services/saf/amf/amfnd/hcdb.cc | 39 ++++++++++++++++--
osaf/services/saf/amf/amfnd/imm.cc | 140
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
osaf/services/saf/amf/amfnd/include/Makefile.am | 3 +-
osaf/services/saf/amf/amfnd/include/avnd_comp.h | 6 +-
osaf/services/saf/amf/amfnd/include/avnd_evt.h | 7 +++
osaf/services/saf/amf/amfnd/include/avnd_proxy.h | 4 +-
osaf/services/saf/amf/amfnd/include/avnd_su.h | 14 ++----
osaf/services/saf/amf/amfnd/include/imm.h | 2 +
osaf/services/saf/amf/amfnd/main.cc | 7 ++-
osaf/services/saf/amf/amfnd/su.cc | 6 +-
osaf/services/saf/amf/amfnd/sudb.cc | 47 +++++++++++++++++++++++
osaf/services/saf/amf/amfnd/susm.cc | 140
+++++++++++++++++++++++++++++++++++++++++++++-----------------------
osaf/services/saf/amf/amfnd/term.cc | 4 +-
21 files changed, 419 insertions(+), 103 deletions(-)
Testing Commands:
-----------------
1. Start two controllers.
2. Upload Amf demo config.
3. Add one component using immcfg
4. Keep sleep of 5 sec in immnd stop script.
5. Kill Immnd and issue unlock-in demo su.
Testing, Expected Results:
--------------------------
Amf demo component should get instantiated and
Amfnd and Imm shouldn't wait for each other.
Conditions of Submission:
-------------------------
Ack
Arch Built Started Linux distro
-------------------------------------------
mips n n
mips64 n n
x86 n n
x86_64 y y
powerpc n n
powerpc64 n n
Reviewer Checklist:
-------------------
[Submitters: make sure that your review doesn't trigger any checkmarks!]
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