Stopped spamming of debug messages during attended transfer.

While autoservice is running and servicing a channel the callid is being stored
and removed in the thread's local storage for each iteration of the thread loop.
If debug was set to a sufficient level the log file would be spammed with callid
thread local storage debug messages.

Added a new function that checks to see if the callid to be stored is different
than what is already contained (if anything).  If it is different then
store/replace and log, otherwise just leave as is.  Also made it so all logging
of debug messages pertaining to the callid thread storage outputs only when
TEST_FRAMEWORK is defined.

(issue ASTERISK-21014)
(closes issue ASTERISK-21014)
Report by: Rusty Newton
Review: https://reviewboard.asterisk.org/r/2324/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@381557 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/logger.h

@@ -280,6 +280,15 @@ struct ast_callid *ast_read_threadstorage_callid(void);
  */
 #define ast_callid_unref(c) ({ ao2_ref(c, -1); (NULL); })
 
+/*!
+ * \brief Sets what is stored in the thread storage to the given
+ *        callid if it does not match what is already there.
+ *
+ * \retval 0 - success
+ * \retval non-zero - failure
+ */
+int ast_callid_threadassoc_change(struct ast_callid *callid);
+
 /*!
  * \brief Adds a known callid to thread storage of the calling thread
  *

main/autoservice.c

@@ -77,6 +77,7 @@ static int as_chan_list_state;
 
 static void *autoservice_run(void *ign)
 {
+	struct ast_callid *callid = NULL;
 	struct ast_frame hangup_frame = {
 		.frametype = AST_FRAME_CONTROL,
 		.subclass.integer = AST_CONTROL_HANGUP,
@@ -90,7 +91,6 @@ static void *autoservice_run(void *ign)
 		int i, x = 0, ms = 50;
 		struct ast_frame *f = NULL;
 		struct ast_frame *defer_frame = NULL;
-		struct ast_callid *callid = NULL;
 
 		AST_LIST_LOCK(&aslist);
 
@@ -129,9 +129,8 @@ static void *autoservice_run(void *ign)
 			continue;
 		}
 
-		if ((callid = ast_channel_callid(chan))) {
-			ast_callid_threadassoc_add(callid);
-		}
+		callid = ast_channel_callid(chan);
+		ast_callid_threadassoc_change(callid);
 
 		f = ast_read(chan);
 
@@ -173,11 +172,11 @@ static void *autoservice_run(void *ign)
 		} else if (f) {
 			ast_frfree(f);
 		}
+	}
 
-		if (callid) {
-			ast_callid_threadassoc_remove();
-			callid = ast_callid_unref(callid);
-		}
+	if (callid) {
+		ast_callid_threadassoc_remove();
+		callid = ast_callid_unref(callid);
 	}
 
 	asthread = AST_PTHREADT_NULL;

main/logger.c

@@ -1317,7 +1317,9 @@ struct ast_callid *ast_create_callid(void)
 	}
 
 	call->call_identifier = ast_atomic_fetchadd_int(&next_unique_callid, +1);
+#ifdef TEST_FRAMEWORK
 	ast_debug(3, "CALL_ID [C-%08x] created by thread.\n", call->call_identifier);
+#endif
 	return call;
 }
 
@@ -1334,6 +1336,36 @@ struct ast_callid *ast_read_threadstorage_callid(void)
 
 }
 
+int ast_callid_threadassoc_change(struct ast_callid *callid)
+{
+	struct ast_callid **id =
+		ast_threadstorage_get(&unique_callid, sizeof(struct ast_callid **));
+
+	if (!id) {
+		ast_log(LOG_ERROR, "Failed to allocate thread storage.\n");
+		return -1;
+	}
+
+	if (*id && (*id != callid)) {
+#ifdef TEST_FRAMEWORK
+		ast_debug(3, "CALL_ID [C-%08x] being removed from thread.\n", (*id)->call_identifier);
+#endif
+		*id = ast_callid_unref(*id);
+		*id = NULL;
+	}
+
+	if (!(*id) && callid) {
+		/* callid will be unreffed at thread destruction */
+		ast_callid_ref(callid);
+		*id = callid;
+#ifdef TEST_FRAMEWORK
+		ast_debug(3, "CALL_ID [C-%08x] bound to thread.\n", callid->call_identifier);
+#endif
+	}
+
+	return 0;
+}
+
 int ast_callid_threadassoc_add(struct ast_callid *callid)
 {
 	struct ast_callid **pointing;
@@ -1347,7 +1379,9 @@ int ast_callid_threadassoc_add(struct ast_callid *callid)
 		/* callid will be unreffed at thread destruction */
 		ast_callid_ref(callid);
 		*pointing = callid;
+#ifdef TEST_FRAMEWORK
 		ast_debug(3, "CALL_ID [C-%08x] bound to thread.\n", callid->call_identifier);
+#endif
 	} else {
 		ast_log(LOG_WARNING, "Attempted to ast_callid_threadassoc_add on thread already associated with a callid.\n");
 		return 1;
@@ -1369,7 +1403,9 @@ int ast_callid_threadassoc_remove(void)
 		ast_log(LOG_ERROR, "Tried to clean callid thread storage with no callid in thread storage.\n");
 		return -1;
 	} else {
+#ifdef TEST_FRAMEWORK
 		ast_debug(3, "CALL_ID [C-%08x] being removed from thread.\n", (*pointing)->call_identifier);
+#endif
 		*pointing = ast_callid_unref(*pointing);
 		return 0;
 	}