[Qemu-devel] [PATCH uq/master 00/21] 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, ready to be
applied to uq/master.

Patches 1 to 5 are generic Win32 improvements, including the qemu-thread
implementation.  Because of complex 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 16 eliminate polling, replacing condition variable
timedwait with wait.

Patch 17 removes a redundant condition from the TCG cpu_exec_all
function.

Patches 18 to 20 add all necessary stubs to make iothread compile
with Win32, except the IPI calls.  These are provided by patch 21.

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.

I incorporated all suggestions from Jan.

Paolo Bonzini (21):
  unlock iothread during WaitForMultipleObjects
  implement win32 dynticks timer
  use win32 timer queues
  replace qemu_thread_equal API with qemu_thread_is_current
  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-defs.h                           |    1 +
 cpu-exec.c                           |   17 ++-
 cpus.c                               |  288 +++++++++++++++++----------------
 hw/apic.c                            |    1 +
 hw/ppc.c                             |    2 +
 hw/sun4m.c                           |   10 +-
 hw/sun4u.c                           |    4 +-
 os-win32.c                           |    2 +
 qemu-thread.c => qemu-thread-posix.c |   40 +++--
 qemu-thread-posix.h                  |   18 ++
 qemu-thread-win32.c                  |  261 ++++++++++++++++++++++++++++++
 qemu-thread-win32.h                  |   21 +++
 qemu-thread.h                        |   29 ++--
 qemu-timer.c                         |   88 +++++------
 target-alpha/exec.h                  |   11 --
 target-arm/exec.h                    |   13 --
 target-cris/exec.h                   |   11 --
 target-i386/exec.h                   |   12 --
 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                     |    1 -
 target-sh4/exec.h                    |   11 --
 target-sparc/exec.h                  |   10 --
 29 files changed, 559 insertions(+), 353 deletions(-)
 rename qemu-thread.c => qemu-thread-posix.c (78%)
 create mode 100644 qemu-thread-posix.h
 create mode 100644 qemu-thread-win32.c
 create mode 100644 qemu-thread-win32.h

-- 
1.7.3.5