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[PATCH v3 00/19] record btrace: non-stop, scheduler-locking, and ASNS

Changes to v2:
  - renamed the new scheduler-locking mode from "reverse" to "replay"
  - added to_record_will_replay target method to support the case where
    record full records during reverse execution
  - added support for scheduler-locking for all-stop targets

Changes to v1:
  - reworked non-stop test
  - changed the error string when trying to store registers while replaying
  - fixed all-stop/non-stop confusion in comments

This patch series adds support for non-stop mode to the record btrace target
and prepares for all-stop on top of non-stop (ASNS).

It adds a new scheduler-locking mode "reverse" for the current record btrace
behaviour of scheduler-locking during reverse/replay execution.

I tested this with the current all-stop and with Pedro's ASNS (by reverting
his disable patch).

The patch series can also be found on branch users/mmetzger/btrace-non-stop.

Markus Metzger (19):
  btrace: fix non-stop check in to_wait
  btrace: support to_stop
  btrace: improve stepping debugging
  btrace: extract the breakpoint check from record_btrace_step_thread
  btrace: split record_btrace_step_thread
  btrace: move breakpoint checking into stepping functions
  btrace: add missing NO_HISTORY
  btrace: lock-step
  btrace: resume all requested threads
  btrace: temporarily set inferior_ptid in record_btrace_start_replaying
  btrace: async
  infrun: switch to NO_HISTORY thread
  btrace: non-stop
  target, record: add PTID argument to to_record_is_replaying
  btrace: allow full memory and register access for non-replaying
  target: add to_record_stop_replaying target method
  target: add to_record_will_replay target method
  infrun: scheduler-locking replay
  btrace: honour scheduler-locking for all-stop targets

 gdb/NEWS                                       |   5 +
 gdb/btrace.h                                   |   5 +-
 gdb/doc/gdb.texinfo                            |  25 +-
 gdb/infrun.c                                   |  47 +-
 gdb/record-btrace.c                            | 751 ++++++++++++++++++-------
 gdb/record-full.c                              |  25 +-
 gdb/record.c                                   |   2 +-
 gdb/target-delegates.c                         |  73 ++-
 gdb/target.c                                   |  20 +-
 gdb/target.h                                   |  21 +-
 gdb/testsuite/gdb.btrace/multi-thread-step.exp | 233 +++++---
 gdb/testsuite/gdb.btrace/non-stop.c            |  45 ++
 gdb/testsuite/gdb.btrace/non-stop.exp          | 245 ++++++++
 13 files changed, 1182 insertions(+), 315 deletions(-)
 create mode 100644 gdb/testsuite/gdb.btrace/non-stop.c
 create mode 100644 gdb/testsuite/gdb.btrace/non-stop.exp


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