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Allow shutdown to unload modules that register bucket scheme's or codec's.

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* Change __ast_module_shutdown_ref to be NULL safe (11+).
* Allow modules that call ast_bucket_scheme_register or ast_codec_register
  to be unloaded during graceful shutdown only (13+ only).

ASTERISK-24796 #close
Reported by: Corey Farrell
Review: https://reviewboard.asterisk.org/r/4428/
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Merged revisions 432058 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 432059 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@432060 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Corey Farrell
2015-02-21 02:58:19 +00:00
parent bb71672a47
commit e66b874f5d
3 changed files with 8 additions and 6 deletions
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4
main/codec.c
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@@ -296,8 +296,8 @@ int __ast_codec_register(struct ast_codec *codec, struct ast_module *mod)
ao2_link_flags(codecs, codec_new, OBJ_NOLOCK);
/* Once registered a codec can not be unregistered, and the module must persist */
ast_module_ref(mod);
/* Once registered a codec can not be unregistered, and the module must persist until shutdown */
ast_module_shutdown_ref(mod);
ast_verb(2, "Registered '%s' codec '%s' at sample rate '%u' with id '%u'\n",
ast_codec_media_type2str(codec->type), codec->name, codec->sample_rate, codec_new->id);