Refactor the Bluetooth timers
* Updated the alarm API:
- Existing API alarm_new() is modified to take an alarm name
as an argument.
- New API alarm_new_periodic() is used to create a periodic
alarm.
- Added new API alarm_is_scheduled() to test whether an alarm is
scheduled.
- Existing API alarm_set_periodic() is removed: a periodic
alarm is created by alarm_new_periodic().
- Added new API alarm_set_on_queue() to set an alarm whose
callback is executed on a specific queue.
- Added new API alarm_register_processing_queue() and
alarm_unregister_processing_queue() to register/unregister
a queue and the corresponding thread for alarm processing.
- Added corresponding unit tests.
* Updated the alarm internals:
- Added alarm_info_t for collecting alarm-related information
and statistics.
- Collect and store alarm-related statistics into alarm_info_t
per alarm.
- Include the alarm-related statistics and info into the native
dumpsys output for Bluetooth.
- Once an alarm expires, the alarm execution is scheduled for
processing on another internal alarm-specific thread, not
on the thread that is maintaining the alarms.
- Implemented callback execution ordering guarantee among
timers on the same thread with exactly same timeout values.
* Refactor some of the usage of alarm_set() and simplify the
code by using alarm_set_on_queue() instead.
* Removed the non_repeating timers wrapper, and use directly
the alarm mechanism / API.
* Refactored all timer_entry_t timers and replaced them with alarm_t
timers:
- Replaced the btu_start_timer() / btu_stop_timer() /
btu_start_quick_timer() / btu_stop_quick_timer() /
btu_oneshot_alarm() mechanism with alarm_set_on_queue() and
alarm_cancel()
- Removed the whole mechanism around the BTU_TTYPE_* timers.
* Fixed a bug when processing the GATT indication confirmation timer
expiration (timer tGATT_TCB.conf_timer: b/26610829).
* Renamed and/or split misc. timeout functions, fields, and timers
* Renamed time-related constants and changed the values from seconds
to milliseconds
* Replaced timer tAVDT_CCB.timer_entry with three mutually exclusive timers:
idle_ccb_timer, ret_ccb_timer, rsp_ccb_timer
The reason we are using three timers, is because in the original code
function avdt_ccb_chk_timer() used the timer type in its logic: it
would stop the timer only if the type is "idle".
* Removed btm_ble_timeout() and replaced it with multiple timeout
callback functions (per timer)
* Fix the actual value of the global constant BT_1SEC_TIMEOUT and
rename it to BT_1SEC_TIMEOUT_MS
* Removed btu_cb and associated timers and events, because they are
never used.
* Removed unused timers, functions, struct and declarations that are
not used / needed.
Bug: 26611369
Bug: 26610829
Change-Id: I812c8c31710a5daefc58b01fcf35c353768f390f
111 files changed