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loader: Create ast_module_running_ref.

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This function returns NULL if the module in question is not running.  I
did not change ast_module_ref as most callers do not check the result
and they always call ast_module_unref.

Make use of this function when running registered items from:
* app_stack API's
* bridge technologies
* CLI commands
* File formats
* Manager Actions
* RTP engines
* Sorcery Wizards
* Timing Interfaces
* Translators
* AGI Commands
* Fax Technologies

ASTERISK-20346 #close

Change-Id: Ia16fd28e188b2fc0b9d18b8a5d9cacc31df73fcc
This commit is contained in:
Corey Farrell
2017-12-29 19:24:02 -05:00
parent 7f4facc5e4
commit 55f1d69c43
13 changed files with 161 additions and 80 deletions
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8
res/res_fax.c
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@@ -1161,8 +1161,10 @@ static struct ast_fax_session *fax_session_reserve(struct ast_fax_session_detail
if ((faxmod->tech->caps & details->caps) != details->caps) {
continue;
}
if (!ast_module_running_ref(faxmod->tech->module)) {
continue;
}
ast_debug(4, "Reserving a FAX session from '%s'.\n", faxmod->tech->description);
ast_module_ref(faxmod->tech->module);
s->tech = faxmod->tech;
break;
}
@@ -1279,8 +1281,10 @@ static struct ast_fax_session *fax_session_new(struct ast_fax_session_details *d
if ((faxmod->tech->caps & details->caps) != details->caps) {
continue;
}
if (!ast_module_running_ref(faxmod->tech->module)) {
continue;
}
ast_debug(4, "Requesting a new FAX session from '%s'.\n", faxmod->tech->description);
ast_module_ref(faxmod->tech->module);
if (reserved) {
/* Balance module ref from reserved session */
ast_module_unref(reserved->tech->module);