[asterisk-dev] [Code Review] Implement ast_channel_search_locked to expensive per-notify channel walk in chan_sip

[Sean Bright]

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http://reviewboard.digium.com/r/28/
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Review request for Asterisk Developers.


Summary
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Based on some feedback from my chan_sip commit earlier today from oej, kpfleming, and russellb, implement ast_channel_search_locked which iterates over the channel list, while locked, and calls a filter callback to determine if this is the channel we are looking for.  If so, we lock and return, otherwise we return NULL.

Patch also includes the change required to chan_sip.c to use the new function.


Diffs
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  /trunk/channels/chan_sip.c 154189 
  /trunk/include/asterisk/channel.h 154189 
  /trunk/main/channel.c 154189 

Diff: http://reviewboard.digium.com/r/28/diff


Testing
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Thanks,

Sean