[PATCH 0/3] Per-inferior thread list, multi-target prep

[Pedro Alves <palves at redhat dot com>]

Here's another chunk split out from my multi-target branch (on
github).  (It's the chunk that I mentioned would be next at the
Cauldron's multi-core BoF.)

Patch #3 is the real deal.  See its commit log for the full
description, but the gist is that it makes each inferior have its own
thread list, and replaces the ALL_THREADS / ALL_NON_EXITED_THREADS /
ALL_INFERIORS macros with (C++20-like) ranges and iterators, such that
you can instead naturaly iterate over threads/inferiors using
range-for, like e.g,.:

   // all threads, including THREAD_EXITED threads.
   for (thread_info *tp : all_threads ())
     { .... }

   // all non-exited threads.
   for (thread_info *tp : all_non_exited_threads ())
     { .... }

   // all non-exited threads of INF inferior.
   for (thread_info *tp : inf->non_exited_threads ())
     { .... }

Patches #1 and #2 fix latent problems exposed by patch #3.

Pedro Alves (3):
  Avoid find_thread_ptid with null_ptid
  Fix follow_exec latent problem
  Per-inferior thread list, thread ranges/iterators, down with
    ALL_THREADS, etc.

 gdb/Makefile.in                |   1 +
 gdb/breakpoint.c               |   7 +-
 gdb/btrace.c                   |   4 +-
 gdb/cli/cli-interp.c           |   4 +-
 gdb/common/filtered-iterator.h |  87 +++++++++++
 gdb/common/safe-iterator.h     |  93 +++++++++++
 gdb/corelow.c                  |   6 -
 gdb/darwin-nat.c               |  10 +-
 gdb/fbsd-nat.c                 |  21 +--
 gdb/fbsd-tdep.c                |   6 +-
 gdb/fork-child.c               |   7 +-
 gdb/gdbarch-selftests.c        |   2 +-
 gdb/gdbthread.h                |  91 +++++++----
 gdb/infcmd.c                   |  69 +++-----
 gdb/inferior-iter.h            | 117 ++++++++++++++
 gdb/inferior.c                 | 136 ++++++----------
 gdb/inferior.h                 |  83 +++++++---
 gdb/inflow.c                   |   6 +-
 gdb/infrun.c                   | 187 +++++++++-------------
 gdb/linux-nat.c                |  43 +++--
 gdb/linux-tdep.c               |   6 +-
 gdb/linux-thread-db.c          |   8 +-
 gdb/mi/mi-interp.c             |  60 +++----
 gdb/mi/mi-main.c               |   5 +-
 gdb/nto-procfs.c               |   2 -
 gdb/python/py-inferior.c       |   4 +-
 gdb/record-btrace.c            |  72 +++------
 gdb/record-full.c              |   4 +-
 gdb/regcache.c                 |   3 -
 gdb/remote-sim.c               |   3 -
 gdb/remote.c                   |  75 +++------
 gdb/target.c                   |   8 +-
 gdb/thread-iter.c              | 101 ++++++++++++
 gdb/thread-iter.h              | 311 ++++++++++++++++++++++++++++++++++++
 gdb/thread.c                   | 346 ++++++++++++-----------------------------
 gdb/tid-parse.c                |  12 +-
 gdb/tui/tui-interp.c           |   4 +-
 gdb/x86-bsd-nat.c              |  14 +-
 38 files changed, 1211 insertions(+), 807 deletions(-)
 create mode 100644 gdb/common/filtered-iterator.h
 create mode 100644 gdb/common/safe-iterator.h
 create mode 100644 gdb/inferior-iter.h
 create mode 100644 gdb/thread-iter.c
 create mode 100644 gdb/thread-iter.h

-- 
2.14.4