[Qemu-devel] [PATCH v8 0/5] monitor: let Monitor be thread safe

[Peter Xu]

v8:
- some wording changes according to previous comments [Markus]
- return -ENOENT too in stubs/fdset.c:monitor_fdset_get_fd() [Stefan]
- refactor the fdset functions a bit, drop "ret" where proper [Markus]
- one more patch to fix monitor_lock comment [Markus]
- regular rebase and torturing

v7:
- let monitor_fdset_get_fd() return -errno, touch up qemu_open() to
  translate that into errno.  [Markus]
- touch up comment for Monitor.rs
- rebase, and torture the code a bit with qtest.

v6:
- add/drop some r-bs
- address all the comments from Markus
- rebase, and run some simple qtests to make sure nothing breaks

v5:
- collect r-bs and rebase
- move two close()s outside critical section [Dave]
- move comment to end of line [Stefan]

v4:
- fix a s/cur_mon/mon/ typo

v3:
- add comment for fields that are protected by monitor lock [Stefan]
- drop most of patch 2, only keep the protections for mon->fds [Stefan]
- add one trivial patch to add some more comments for either readline
  and cpu_get/cpu_set [Stefan]
- add protection for monitor_fdset_get_fd() [Stefan]

v2:
- cc correct people... sorry.

Stefan reported this problem that in the future we might start to have
more threads operating on the same Monitor object.  This seris try to
add fundamental support for it.

Please review.  Thanks,

Peter Xu (5):
  monitor: rename out_lock to mon_lock
  monitor: protect mon->fds with mon_lock
  monitor: more comments on lock-free elements
  monitor: fix comment for monitor_lock
  monitor: add lock to protect mon_fdsets

 monitor.c     | 152 ++++++++++++++++++++++++++++++++++++--------------
 stubs/fdset.c |   2 +-
 util/osdep.c  |   3 +-
 3 files changed, 113 insertions(+), 44 deletions(-)

-- 
2.17.0