Bluedroid use a set of timer function pairs such as btu_start_timer/btu_stop_timer, btu_sys_start_timer/btu_sys_stop_timer for use, in a lack of timer release functions. Thus the timers may be exhausted after some event sequence such as repetition of connection/reconnection with different devices. The maximum timer number used in bluedroid is given by ALARM_CBS_NUM which is 30 for now. This bugfix borrowed some update from bluedroid in Andoroid 7.0, which add timer release functions which promote the recycle of timer resources.
# Conflicts:
# components/bt/bluedroid/stack/btu/btu_task.c
# components/bt/bluedroid/stack/gatt/gatt_main.c
# components/bt/bluedroid/stack/rfcomm/port_utils.c
# components/bt/bluedroid/stack/rfcomm/rfc_utils.c
squash again all the commit.
component/bt: Change all the gattc API && bta gattc layer.
component/bt: Debug the code and change the btc_ble_gattc_get_db method.
component/bt: Change the gatt read API interface.
component/bt: Reconstruction the BTA_gattc_cache code.
component/bt: Change back the bluedroid_get_status to marco.
component/bt: Added the serch service res start_handle & end_handle to the result.
component/bt: Change the gattc docs format.
component/bt: Change the docs format.
component/bt: fix the read char value bug.
component/bt: change the gattc_get_attr_count method.
component/bt: Change back the bta_gattc write ccc code.
component/bt: Change the gattc api docs format
component/bt: Change the gattc API docs.
component/bt: Change the prepare write descriptor method to avoid the exection.
Component/bt: modify gatt clinet demo with new API
component/bt: Change the p_src_data->read.p_value to avoid exection.
compoent/bt: Change the bugfix of gattc unreg for the notify.
Modify gattc security demo
component/bt: Change the log error.
Component/bt: modify gattc_multi_connect demo
componnet/bt: Change the bta_gattc_cache sdp include.
component/bt: Change the start_handle & end_handle not from the service.
component/bt: Change the gattc API docs.
component/bt: Change the return issues.
component/bt: Fixed the include service bug.
component/bt: Modify gattc_multi_connect demo , add scan log
component/bt: Fixed the BTA_GATTC_GetIncludeService start handle & end handle error bug.
component/bt: Fix the invalid handle of the get all char issues.
component/bt: Fix the bug with get_db_size_with_type of the start handle & end_handle not correted issue.
component/bt: Fixed the get secondly service num not correct issue.
component/bt: Fixed the last service handle not correted issue.
1. remove GKI(not use osi_free_and_reset)
2. modify mutex/semaphore to individual directory
3. set osi_malloc as malloc(previously use calloc)
4. change osi allocator debug osi_free
5. fix rebase of remove GKI
1. Add process of prepare write request packets
2. Add process of execute write request packets
3. Add process of reliable write request packets
4. Fix bug of processing read blob request packets
5. Fix bug of processing write request packets
6. Optimize error check and process in stack
