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George Joseph 9740277713 res_pjsip: Add serialized scheduler (res_pjsip/pjsip_scheduler.c) ... There are several places that do scheduled tasks or periodic housecleaning, each with its own implementation: * res_pjsip_keepalive has a thread that sends keepalives. * pjsip_distributor has a thread that cleans up expired unidentified requests. * res_pjsip_registrar_expire has a thread that cleans up expired contacts. * res_pjsip_pubsub uses ast_sched directly and then calls ast_sip_push_task. * res_pjsip_sdp_rtp also uses ast_sched to send keepalives. There are also places where we should be doing scheduled work but aren't. A good example are the places we have sorcery observers to start registration or qualify. These don't work when changes are made to a backend database without a pjsip reload. We need to check periodically. As a first step to solving these issues, a new ast_sip_sched facility has been created. ast_sip_sched wraps ast_sched but only uses ast_sched as a scheduled queue. When a task is ready to run, ast_sip_task_pusk is called for it. This ensures that the task is executed in a PJLIB registered thread and doesn't hold up the ast_sched thread so it can immediately continue processing the queue. The serializer used by ast_sip_sched is one of your choosing or a random one from the res_pjsip pool if you don't choose one. Another feature is the ability to automatically clean up the task_data when the task expires (if ever). If it's an ao2 object, it will be dereferenced, if it's a malloc'd object it will be freed. This is selectable when the task is scheduled. Even if you choose to not auto dereference an ao2 task data object, the scheduler itself maintains a reference to it while the task is under it's control. This prevents the data from disappearing out from under the task. There are two scheduling models. AST_SIP_SCHED_TASK_PERIODIC specifies that the invocations of the task occur at the specific interval. That is, every "interval" milliseconds, regardless of how long the task takes. If the task takes longer than the interval, it will be scheduled at the next available multiple of interval. For exmaple: If the task has an interval of 60 secs and the task takes 70 secs (it better not), the next invocation will happen at 120 seconds. AST_SIP_SCHED_TASK_DELAY specifies that the next invocation of the task should start "interval" milliseconds after the current invocation has finished. Also, the same ast_sched facility for fixed or variable intervals exists. The task's return code in conjunction with the AST_SIP_SCHED_TASK_FIXED or AST_SIP_SCHED_TASK_VARIABLE flags controls the next invocation start time. One res_pjsip.h housekeeping change was made. The pjsip header files were added to the top. There have been a few cases lately where I've needed res_pjsip.h just for ast_sip calls and had compiles fail spectacularly because I didn't add the pjsip header files to my source even though I never referenced any pjsip calls. Finally, a few new convenience APIs were added to astobj2 to make things a little easier in the scheduler. ao2_ref_and_lock() calls ao2_ref() and ao2_lock() in one go. ao2_unlock_and_unref() does the reverse. A few macros were also copied from res_phoneprov because I got tired of having to duplicate the same hash, sort and compare functions over and over again. The AO2_STRING_FIELD_(HASH|SORT|CMP)_FN macros will insert functions suitable for aor_container_alloc into your source. This facility can be used immediately for the situations where we already have a thread that wakes up periodically or do some scheduled work. For the registration and qualify issues, additional sorcery and schema changes would need to be made so that we can easily detect changed objects on a periodic basis without having to pull the entire database back to check. I'm thinking of a last-updated timestamp on the rows but more on this later. Change-Id: I7af6ad2b2d896ea68e478aa1ae201d6dd016ba1c		11 years ago
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Makefile	Title update	14 years ago
test_abstract_jb.c	Fix more dev-mode build issues	12 years ago
test_acl.c	clang compiler warnings: Fix various warnings for tests	12 years ago
test_ami_security_events.sh	Add an API for reporting security events, and a security event logging module.	17 years ago
test_amihooks.c	Merged revisions 338556 via svnmerge from	15 years ago
test_aoc.c	Fix more dev-mode build issues	12 years ago
test_app.c	uniqueid: channel linkedid, ami, ari object creation with id's	13 years ago
test_ari.c	ari:Add application/json parameter support	13 years ago
test_ari_model.c	Fix module load errors for test_ari_model.so.	13 years ago
test_ast_format_str_reduce.c	Merged revisions 332177 via svnmerge from	15 years ago
test_astobj2.c	test_astobj2: Fix warning for missing trailing slash in category	12 years ago
test_astobj2_thrash.c	Fix more dev-mode build issues	12 years ago
test_bucket.c	Fix bucket unit tests	13 years ago
test_callerid.c	CallerID: Fix parsing regression	12 years ago
test_cdr.c	Unit tests: Fix unit test description strings.	11 years ago
test_cel.c	Unit tests: Fix unit test description strings.	11 years ago
test_channel_feature_hooks.c	Unit tests: Fix unit test description strings.	11 years ago
test_config.c	sorcery/res_pjsip: Refactor for realtime performance	11 years ago
test_core_codec.c	media formats: re-architect handling of media for performance improvements	12 years ago
test_core_format.c	main/format: Add an API call for retrieving format attributes	11 years ago
test_db.c	app_queue: Support persisting and loading of long member lists.	14 years ago
test_devicestate.c	tests/test_devicestate: Add additional tests for the device state API	11 years ago
test_dlinklists.c	logging: Remove/fix some message annoyances	11 years ago
test_endpoints.c	Few more menuselect fixes missed in r392777	13 years ago
test_event.c	Fix more dev-mode build issues	12 years ago
test_expr.c	Unit tests: Fix unit test description strings.	11 years ago
test_format_cache.c	media formats: re-architect handling of media for performance improvements	12 years ago
test_format_cap.c	format_cap: Don't append the 'none' format when appending all.	11 years ago
test_func_file.c	funcs/func_env: Fix regression caused in FILE read operation	12 years ago
test_gosub.c	Fix unsafe uses of ast_context pointers.	11 years ago
test_hashtab_thrash.c	Fix more dev-mode build issues	12 years ago
test_heap.c	Merged revisions 332177 via svnmerge from	15 years ago
test_jitterbuf.c	Doxygen comment tweaks.	13 years ago
test_json.c	Fix more dev-mode build issues	12 years ago
test_linkedlists.c	test_linkedlists: Fix memory leak	13 years ago
test_locale.c	Merged revisions 338556 via svnmerge from	15 years ago
test_logger.c	Fix more dev-mode build issues	12 years ago
test_message.c	Unit tests: Fix unit test description strings.	11 years ago
test_named_lock.c	lock: Add named lock capability	11 years ago
test_netsock2.c	Add a unit test for ast_sockaddr_split_hostport	15 years ago
test_optional_api.c	Fix more dev-mode build issues	12 years ago
test_pbx.c	Fix unsafe uses of ast_context pointers.	11 years ago
test_poll.c	Unit tests: Fix unit test description strings.	11 years ago
test_res_pjsip_scheduler.c	res_pjsip: Add serialized scheduler (res_pjsip/pjsip_scheduler.c)	11 years ago
test_res_stasis.c	Update events to use Swagger 1.3 subtyping, and related aftermath	13 years ago
test_sched.c	sched.c: Ensure oldest expiring entry runs first.	11 years ago
test_scoped_lock.c	ao2_iterator: Mini-audit of the ao2_iterator loops in the new code files.	13 years ago
test_security_events.c	Stasis: Update security events to use Stasis	13 years ago
test_skel.c	Merged revisions 332177 via svnmerge from	15 years ago
test_sorcery.c	sorcery: Add API to insert/remove a wizard to/from an object type's list	11 years ago
test_sorcery_astdb.c	sorcery/res_pjsip: Refactor for realtime performance	11 years ago
test_sorcery_memory_cache_thrash.c	tests/test_sorcery_memory_cache_thrash: Improve termination process.	11 years ago
test_sorcery_realtime.c	sorcery/res_pjsip: Refactor for realtime performance	11 years ago
test_stasis.c	Unit tests: Fix unit test description strings.	11 years ago
test_stasis_channels.c	Stasis: Update unittest for channel snapshots	12 years ago
test_stasis_endpoints.c	tests/test_stasis_endpoints: Remove expected duplicate events	11 years ago
test_stringfields.c	stringfields: Refactor to allow fields to be added to the end of structures	11 years ago
test_strings.c	sorcery/res_pjsip: Refactor for realtime performance	11 years ago
test_substitution.c	uniqueid: channel linkedid, ami, ari object creation with id's	13 years ago
test_taskprocessor.c	Multiple revisions 399887,400138,400178,400180-400181	13 years ago
test_threadpool.c	Fix failing threadpool_auto_increment test.	11 years ago
test_time.c	Merged revisions 332177 via svnmerge from	15 years ago
test_uri.c	res_http_websocket: Create a websocket client	12 years ago
test_utils.c	CallerID: Fix parsing of malformed callerid	12 years ago
test_uuid.c	Add uuid wrapper API call ast_uuid_generate_str().	14 years ago
test_vector.c	vector: Add REMOVE, ADD_SORTED and RESET macros	11 years ago
test_voicemail_api.c	Unit tests: Fix unit test description strings.	11 years ago
test_websocket_client.c	res_http_websocket: read/write string fixup	12 years ago
test_xml_escape.c	Merged revisions 378935 via svnmerge from	14 years ago