[Qemu-devel] [PATCH v3 uq/master 00/22] Win32 iothread support

[Paolo Bonzini <pbonzini@redhat.com>]

After gathering the comments about the two series I sent separately,
here is the full series for Win32 iothread support.  It is based on
master, but as it touches (mostly, indeed) OS-independent parts it
is safer to get it in through uq/master.

Patches 1 to 5 are generic Win32 improvements, including the qemu-thread
implementation.  To simplify the dependencies, I think it's better if
this part is also routed through uq/master.

Patches 6 to 8 are generic threading improvements, including using
PTHREAD_MUTEX_ERRORCHECK as suggested by Jan.

Patches 9 to 17 eliminate polling, replacing condition variable
timedwait with wait.

Patch 18 removes a redundant condition from the TCG cpu_exec_all
function.

Patches 19 to 21 add all necessary stubs to make iothread compile
with Win32, except the IPI calls.  These are provided by patch 22.

Tested on Wine and Linux, not on "real" Windows.  The series introduces
a dependency on Windows 2K or newer.  I don't think either 95/98/ME
or Windows NT 3.x are reasonable host systems for QEMU, anyway.

v1->v2
    I incorporated all suggestions from Jan, including his renaming patch
    for qemu_*_is_self, and included Aurelien's sh4 tweak to cpu_halted.

v2->v3
    Fixed structure naming, renamed qemu_signalfd_init, dropped owner
    tracking in QemuMutex for now.

Aurelien Jarno (1):
  target-sh4: move intr_at_halt out of cpu_halted()

Jan Kiszka (1):
  Refactor thread retrieval and check

Paolo Bonzini (20):
  unlock iothread during WaitForMultipleObjects
  implement win32 dynticks timer
  use win32 timer queues
  add win32 qemu-thread implementation
  include qemu-thread.h early
  add assertions on the owner of a QemuMutex
  remove CONFIG_THREAD
  inline cpu_halted into sole caller
  always qemu_cpu_kick after unhalting a cpu
  exit round-robin vcpu loop if cpu->stopped is true
  always signal pause_cond after stopping a VCPU
  do not use timedwait on qemu_halt_cond
  do not use timedwait on qemu_system_cond
  do not use timedwait on qemu_pause_cond
  do not use timedwait on qemu_cpu_cond
  iothread stops the vcpu thread via IPI
  move blocking of signals to qemu_signalfd_init
  provide dummy signal init functions for win32
  protect qemu_cpu_kick_self for Win32
  add Win32 IPI service

 Makefile.objs                        |    4 +-
 configure                            |    2 -
 cpu-exec.c                           |    9 +-
 cpus.c                               |  298 +++++++++++++++++-----------------
 exec.c                               |    2 +-
 hw/ppc.c                             |    2 +
 hw/sun4m.c                           |   10 +-
 hw/sun4u.c                           |    4 +-
 os-win32.c                           |    2 +
 qemu-common.h                        |    2 +-
 qemu-thread.c => qemu-thread-posix.c |   38 +++--
 qemu-thread-posix.h                  |   18 ++
 qemu-thread-win32.c                  |  260 +++++++++++++++++++++++++++++
 qemu-thread-win32.h                  |   21 +++
 qemu-thread.h                        |   31 ++--
 qemu-timer.c                         |   89 +++++------
 target-alpha/exec.h                  |   11 --
 target-arm/exec.h                    |   13 --
 target-cris/exec.h                   |   11 --
 target-i386/exec.h                   |   12 --
 target-i386/kvm.c                    |    4 +-
 target-m68k/exec.h                   |   10 --
 target-microblaze/exec.h             |   11 --
 target-mips/exec.h                   |   11 --
 target-ppc/exec.h                    |   11 --
 target-s390x/exec.h                  |   12 --
 target-s390x/kvm.c                   |    1 +
 target-sh4/cpu.h                     |    2 +-
 target-sh4/exec.h                    |   11 --
 target-sh4/helper.c                  |    4 +-
 target-sh4/op_helper.c               |    1 +
 target-sparc/exec.h                  |   10 --
 ui/vnc-jobs-async.c                  |    2 +-
 33 files changed, 562 insertions(+), 367 deletions(-)
 rename qemu-thread.c => qemu-thread-posix.c (81%)
 create mode 100644 qemu-thread-posix.h
 create mode 100644 qemu-thread-win32.c
 create mode 100644 qemu-thread-win32.h

-- 
1.7.4