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astobj2: tweak ao2_replace to do nothing when it would be a NoOp

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This change causes ao2_replace to do nothing when src == dst. This
avoids REF_DEBUG logging when we're not actually doing anything.

Review: https://reviewboard.asterisk.org/r/3743/
........

Merged revisions 418396 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@418397 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Corey Farrell 2014-07-11 21:10:45 +00:00
parent 6e5d843a56
commit 694b68e544
1 changed files with 8 additions and 6 deletions
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14
include/asterisk/astobj2.h
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@ -561,13 +561,15 @@ int __ao2_ref(void *o, int delta);
{\
typeof(dst) *__dst_ ## __LINE__ = &dst; \
typeof(src) __src_ ## __LINE__ = src; \
if (__src_ ## __LINE__) {\
ao2_ref(__src_ ## __LINE__, +1); \
if (__src_ ## __LINE__ != *__dst_ ## __LINE__) { \
if (__src_ ## __LINE__) {\
ao2_ref(__src_ ## __LINE__, +1); \
} \
if (*__dst_ ## __LINE__) {\
ao2_ref(*__dst_ ## __LINE__, -1); \
} \
*__dst_ ## __LINE__ = __src_ ## __LINE__; \
} \
if (*__dst_ ## __LINE__) {\
ao2_ref(*__dst_ ## __LINE__, -1); \
} \
*__dst_ ## __LINE__ = __src_ ## __LINE__; \
}
/*! @} */