Remove redundant module checks and references.

This removes references that are no longer needed due to automatic
references created by module dependencies.

In addition this removes most calls to ast_module_check as they were
checking modules which are listed as dependencies.

Change-Id: I332a6e8383d4c72c8e89d988a184ab8320c4872e

8 files changed, 11 insertions, 134 deletions

diff --git a/include/asterisk/agi.h b/include/asterisk/agi.h
index cb80f9570..568cd5d11 100644
--- a/include/asterisk/agi.h
+++ b/include/asterisk/agi.h
@@ -82,13 +82,12 @@ AST_OPTIONAL_API(int, ast_agi_register,
  *
  * Unregisters an AGI command.
  *
- * \param mod Pointer to the module_info structure for the module that is unregistering the command
  * \param cmd Pointer to the descriptor for the command
  * \return 1 on success, 0 if the command was not already registered
  *
  */
 AST_OPTIONAL_API(int, ast_agi_unregister,
-		 (struct ast_module *mod, agi_command *cmd),
+		 (agi_command *cmd),
 		 { return AST_OPTIONAL_API_UNAVAILABLE; });
 
 /*!
@@ -116,7 +115,6 @@ AST_OPTIONAL_API(int, ast_agi_register_multiple,
  * Unregisters a group of AGI commands, provided as an array of struct agi_command
  * entries.
  *
- * \param mod Pointer to the module_info structure for the module that is unregistering the commands
  * \param cmd Pointer to the first entry in the array of command descriptors
  * \param len Length of the array (use the ARRAY_LEN macro to determine this easily)
  * \return 0 on success, -1 on failure, AST_OPTIONAL_API_UNAVAILABLE if res_agi is not loaded
@@ -125,7 +123,7 @@ AST_OPTIONAL_API(int, ast_agi_register_multiple,
  * remaining commands in the array; it will not reregister the already-unregistered commands.
  */
 AST_OPTIONAL_API(int, ast_agi_unregister_multiple,
-		 (struct ast_module *mod, struct agi_command *cmd, unsigned int len),
+		 (struct agi_command *cmd, unsigned int len),
 		 { return AST_OPTIONAL_API_UNAVAILABLE; });
 
 /*!
diff --git a/include/asterisk/ari.h b/include/asterisk/ari.h
index f83d5963f..865b4b00c 100644
--- a/include/asterisk/ari.h
+++ b/include/asterisk/ari.h
@@ -268,14 +268,4 @@ void ast_ari_response_created(struct ast_ari_response *response,
  */
 void ast_ari_response_alloc_failed(struct ast_ari_response *response);
 
-/*! \brief Determines whether the res_ari module is loaded */
-#define CHECK_ARI_MODULE_LOADED()				\
-	do {							\
-		if (!ast_module_check("res_ari.so")		\
-			|| !ast_ari_oom_json()) {	\
-			return AST_MODULE_LOAD_DECLINE;		\
-		}						\
-	} while(0)
-
-
 #endif /* _ASTERISK_ARI_H */
diff --git a/include/asterisk/res_mwi_external.h b/include/asterisk/res_mwi_external.h
index 7698a1bd6..25de70003 100644
--- a/include/asterisk/res_mwi_external.h
+++ b/include/asterisk/res_mwi_external.h
@@ -36,22 +36,6 @@ extern "C"
 
 /* ------------------------------------------------------------------- */
 
-/*!
- * \brief Increase the external MWI resource module reference count.
- * \since 12.1.0
- *
- * \return Nothing
- */
-void ast_mwi_external_ref(void);
-
-/*!
- * \brief Decrease the external MWI resource module reference count.
- * \since 12.1.0
- *
- * \return Nothing
- */
-void ast_mwi_external_unref(void);
-
 struct ast_mwi_mailbox_object;
 
 /*! \brief Convienience unref function for mailbox object. */
diff --git a/include/asterisk/res_pjproject.h b/include/asterisk/res_pjproject.h
index 8828b340c..4993be610 100644
--- a/include/asterisk/res_pjproject.h
+++ b/include/asterisk/res_pjproject.h
@@ -19,14 +19,6 @@
 #ifndef _RES_PJPROJECT_H
 #define _RES_PJPROJECT_H
 
-/*! \brief Determines whether the res_pjproject module is loaded */
-#define CHECK_PJPROJECT_MODULE_LOADED()                 \
-	do {                                                \
-		if (!ast_module_check("res_pjproject.so")) {    \
-			return AST_MODULE_LOAD_DECLINE;             \
-		}                                               \
-	} while(0)
-
 /*!
  * \brief Retrieve a pjproject build option
  *
@@ -79,18 +71,4 @@ void ast_pjproject_log_intercept_begin(int fd);
  */
 void ast_pjproject_log_intercept_end(void);
 
-/*!
- * \brief Increment the res_pjproject reference count.
- *
- * This ensures graceful shutdown happens in the proper order.
- */
-void ast_pjproject_ref(void);
-
-/*!
- * \brief Decrement the res_pjproject reference count.
- *
- * This ensures graceful shutdown happens in the proper order.
- */
-void ast_pjproject_unref(void);
-
 #endif /* _RES_PJPROJECT_H */
diff --git a/include/asterisk/res_pjsip.h b/include/asterisk/res_pjsip.h
index 66b99b8f7..a3bd78222 100644
--- a/include/asterisk/res_pjsip.h
+++ b/include/asterisk/res_pjsip.h
@@ -933,9 +933,7 @@ enum ast_sip_contact_filter {
  * \retval 0 Success
  * \retval -1 Failure
  */
-#define ast_sip_register_service(module) \
-	__ast_sip_register_service(module, __FILE__, __LINE__, __PRETTY_FUNCTION__)
-int __ast_sip_register_service(pjsip_module *module, const char *file, int line, const char *func);
+int ast_sip_register_service(pjsip_module *module);
 
 /*!
  * This is the opposite of ast_sip_register_service().  Unregistering a
@@ -944,9 +942,7 @@ int __ast_sip_register_service(pjsip_module *module, const char *file, int line,
  *
  * \param module The PJSIP module to unregister
  */
-#define ast_sip_unregister_service(module) \
-	__ast_sip_unregister_service(module, __FILE__, __LINE__, __PRETTY_FUNCTION__)
-void __ast_sip_unregister_service(pjsip_module *module, const char *file, int line, const char *func);
+void ast_sip_unregister_service(pjsip_module *module);
 
 /*!
  * \brief Register a SIP authenticator
@@ -2448,10 +2444,8 @@ struct ast_sip_endpoint_formatter {
  * \brief Register an endpoint formatter.
  *
  * \param obj the formatter to register
- * \retval 0 Success
- * \retval -1 Failure
  */
-int ast_sip_register_endpoint_formatter(struct ast_sip_endpoint_formatter *obj);
+void ast_sip_register_endpoint_formatter(struct ast_sip_endpoint_formatter *obj);
 
 /*!
  * \brief Unregister an endpoint formatter.
@@ -2627,20 +2621,14 @@ struct ast_sip_supplement {
  * \retval 0 Success
  * \retval -1 Failure
  */
-#define ast_sip_register_supplement(supplement) \
-	__ast_sip_register_supplement(supplement, __FILE__, __LINE__, __PRETTY_FUNCTION__)
-int __ast_sip_register_supplement(struct ast_sip_supplement *supplement,
-	const char *file, int line, const char *func);
+void ast_sip_register_supplement(struct ast_sip_supplement *supplement);
 
 /*!
  * \brief Unregister a an supplement to SIP out of dialog processing
  *
  * \param supplement The supplement to unregister
  */
-#define ast_sip_unregister_supplement(supplement) \
-	__ast_sip_unregister_supplement(supplement, __FILE__, __LINE__, __PRETTY_FUNCTION__)
-void __ast_sip_unregister_supplement(struct ast_sip_supplement *supplement,
-	const char *file, int line, const char *func);
+void ast_sip_unregister_supplement(struct ast_sip_supplement *supplement);
 
 /*!
  * \brief Retrieve the global MWI taskprocessor high water alert trigger level.
@@ -2764,15 +2752,6 @@ void ast_sip_get_default_realm(char *realm, size_t size);
  */
 void ast_sip_get_default_from_user(char *from_user, size_t size);
 
-/*! \brief Determines whether the res_pjsip module is loaded */
-#define CHECK_PJSIP_MODULE_LOADED()				\
-	do {							\
-		if (!ast_module_check("res_pjsip.so")		\
-			|| !ast_sip_get_pjsip_endpoint()) {	\
-			return AST_MODULE_LOAD_DECLINE;		\
-		}						\
-	} while(0)
-
 /*!
  * \brief Retrieve the system keep alive interval setting.
  *
diff --git a/include/asterisk/res_pjsip_pubsub.h b/include/asterisk/res_pjsip_pubsub.h
index cb51db31f..e9d59a085 100644
--- a/include/asterisk/res_pjsip_pubsub.h
+++ b/include/asterisk/res_pjsip_pubsub.h
@@ -754,13 +754,4 @@ const char *ast_sip_subscription_get_body_subtype(struct ast_sip_subscription *s
  */
 void ast_sip_subscription_destroy(struct ast_sip_subscription *sub);
 
-/*! \brief Determines whether the res_pjsip_pubsub module is loaded */
-#define CHECK_PJSIP_PUBSUB_MODULE_LOADED()			\
-	do {							\
-		CHECK_PJSIP_MODULE_LOADED();			\
-		if (!ast_module_check("res_pjsip_pubsub.so")) {	\
-			return AST_MODULE_LOAD_DECLINE;		\
-		}						\
-	} while(0)
-
 #endif /* RES_PJSIP_PUBSUB_H */
diff --git a/include/asterisk/res_pjsip_session.h b/include/asterisk/res_pjsip_session.h
index 65d463821..f6ee0f00b 100644
--- a/include/asterisk/res_pjsip_session.h
+++ b/include/asterisk/res_pjsip_session.h
@@ -579,23 +579,15 @@ void ast_sip_session_unregister_sdp_handler(struct ast_sip_session_sdp_handler *
  * a module could reject an incoming request if desired.
  *
  * \param supplement The supplement to register
- * \retval 0 Success
- * \retval -1 Failure
  */
-#define ast_sip_session_register_supplement(supplement) \
-	__ast_sip_session_register_supplement(supplement, __FILE__, __LINE__, __PRETTY_FUNCTION__)
-int __ast_sip_session_register_supplement(struct ast_sip_session_supplement *supplement,
-	const char *file, int line, const char *func);
+void ast_sip_session_register_supplement(struct ast_sip_session_supplement *supplement);
 
 /*!
  * \brief Unregister a an supplement to SIP session processing
  *
  * \param supplement The supplement to unregister
  */
-#define ast_sip_session_unregister_supplement(supplement) \
-	__ast_sip_session_unregister_supplement(supplement, __FILE__, __LINE__, __PRETTY_FUNCTION__)
-void __ast_sip_session_unregister_supplement(struct ast_sip_session_supplement *supplement,
-	const char *file, int line, const char *func);
+void ast_sip_session_unregister_supplement(struct ast_sip_session_supplement *supplement);
 
 /*!
  * \brief Add supplements to a SIP session
@@ -894,13 +886,4 @@ int ast_sip_session_media_set_write_callback(struct ast_sip_session *session, st
  */
 struct ast_sip_session_media *ast_sip_session_media_get_transport(struct ast_sip_session *session, struct ast_sip_session_media *session_media);
 
-/*! \brief Determines whether the res_pjsip_session module is loaded */
-#define CHECK_PJSIP_SESSION_MODULE_LOADED()				\
-	do {								\
-		CHECK_PJSIP_MODULE_LOADED();				\
-		if (!ast_module_check("res_pjsip_session.so")) {	\
-			return AST_MODULE_LOAD_DECLINE;			\
-		}							\
-	} while(0)
-
 #endif /* _RES_PJSIP_SESSION_H */
diff --git a/include/asterisk/stasis_app.h b/include/asterisk/stasis_app.h
index 8ef2bda1c..b0829ab73 100644
--- a/include/asterisk/stasis_app.h
+++ b/include/asterisk/stasis_app.h
@@ -46,8 +46,8 @@
  * functions.
  *
  * Since module unload order is based on reference counting, any module that
- * uses the API defined in this file must call stasis_app_ref() when loaded,
- * and stasis_app_unref() when unloaded.
+ * uses the API defined in this file must list "res_stasis" in the requires
+ * field.
  */
 
 #include "asterisk/channel.h"
@@ -229,18 +229,6 @@ void stasis_app_register_event_source(struct stasis_app_event_source *obj);
 void stasis_app_register_event_sources(void);
 
 /*!
- * \brief Checks to see if the given object is a core event source
- *
- * \note core event sources are currently only endpoint, bridge, and channel.
- *
- * \param obj event source object to check
- *
- * \return non-zero if core event source, otherwise 0 (false)
-
- */
-int stasis_app_is_core_event_source(struct stasis_app_event_source *obj);
-
-/*!
  * \brief Unregister an application event source.
  *
  * \param obj the event source to unregister
@@ -850,20 +838,6 @@ struct ast_bridge *stasis_app_get_bridge(struct stasis_app_control *control);
 void stasis_app_bridge_destroy(const char *bridge_id);
 
 /*!
- * \brief Increment the res_stasis reference count.
- *
- * This ensures graceful shutdown happens in the proper order.
- */
-void stasis_app_ref(void);
-
-/*!
- * \brief Decrement the res_stasis reference count.
- *
- * This ensures graceful shutdown happens in the proper order.
- */
-void stasis_app_unref(void);
-
-/*!
  * \brief Get the Stasis message sanitizer for app_stasis applications
  *
  * \retval The stasis message sanitizer