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wxx patch queue 

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Merge remote-tracking branch 'remotes/weil/tags/pull-wxx-20150924' into staging

wxx patch queue

# gpg: Signature made Thu 24 Sep 2015 20:24:50 BST using RSA key ID 677450AD
# gpg: Good signature from "Stefan Weil <sw@weilnetz.de>"
# gpg:                 aka "Stefan Weil <stefan.weil@weilnetz.de>"
# gpg:                 aka "Stefan Weil <stefan.weil@bib.uni-mannheim.de>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 4923 6FEA 75C9 5D69 8EC2  B78A E08C 21D5 6774 50AD

* remotes/weil/tags/pull-wxx-20150924:
  oslib-win32: only provide localtime_r/gmtime_r if missing
  gtk: avoid redefining _WIN32_WINNT macro
  qemu-thread: add a fast path to the Win32 QemuEvent
  slirp: Fix non blocking connect for w32
  nsis: Add QEMU version information to Windows registry

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2015-09-24 22:09:41 +01:00
parent 9438fe9e56 4d9310f427
commit 8a47d575df
12 changed files with 222 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Makefile
View File

@ -623,6 +623,7 @@ endif # SIGNCODE
$(if $(DLL_PATH),-DDLLDIR="$(DLL_PATH)") \
-DSRCDIR="$(SRC_PATH)" \
-DOUTFILE="$(INSTALLER)" \
-DDISPLAYVERSION="$(VERSION)" \
$(SRC_PATH)/qemu.nsi
rm -r ${INSTDIR}
ifdef SIGNCODE

34
configure vendored
View File

@ -1736,6 +1736,37 @@ else
l2tpv3=no
fi
##########################################
# MinGW / Mingw-w64 localtime_r/gmtime_r check
if test "$mingw32" = "yes"; then
# Some versions of MinGW / Mingw-w64 lack localtime_r
# and gmtime_r entirely.
#
# Some versions of Mingw-w64 define a macro for
# localtime_r/gmtime_r.
#
# Some versions of Mingw-w64 will define functions
# for localtime_r/gmtime_r, but only if you have
# _POSIX_THREAD_SAFE_FUNCTIONS defined. For fun
# though, unistd.h and pthread.h both define
# that for you.
#
# So this #undef localtime_r and #include <unistd.h>
# are not in fact redundant.
cat > $TMPC << EOF
#include <unistd.h>
#include <time.h>
#undef localtime_r
int main(void) { localtime_r(NULL, NULL); return 0; }
EOF
if compile_prog "" "" ; then
localtime_r="yes"
else
localtime_r="no"
fi
fi
##########################################
# pkg-config probe
@ -5034,6 +5065,9 @@ fi
if test "$zero_malloc" = "yes" ; then
echo "CONFIG_ZERO_MALLOC=y" >> $config_host_mak
fi
if test "$localtime_r" = "yes" ; then
echo "CONFIG_LOCALTIME_R=y" >> $config_host_mak
fi
if test "$qom_cast_debug" = "yes" ; then
echo "CONFIG_QOM_CAST_DEBUG=y" >> $config_host_mak
fi

98
docs/win32-qemu-event.promela Normal file
View File

@ -0,0 +1,98 @@
/*
* This model describes the implementation of QemuEvent in
* util/qemu-thread-win32.c.
*
* Author: Paolo Bonzini <pbonzini@redhat.com>
*
* This file is in the public domain. If you really want a license,
* the WTFPL will do.
*
* To verify it:
* spin -a docs/event.promela
* gcc -O2 pan.c -DSAFETY
* ./a.out
*/
bool event;
int value;
/* Primitives for a Win32 event */
#define RAW_RESET event = false
#define RAW_SET event = true
#define RAW_WAIT do :: event -> break; od
#if 0
/* Basic sanity checking: test the Win32 event primitives */
#define RESET RAW_RESET
#define SET RAW_SET
#define WAIT RAW_WAIT
#else
/* Full model: layer a userspace-only fast path on top of the RAW_*
* primitives. SET/RESET/WAIT have exactly the same semantics as
* RAW_SET/RAW_RESET/RAW_WAIT, but try to avoid invoking them.
*/
#define EV_SET 0
#define EV_FREE 1
#define EV_BUSY -1
int state = EV_FREE;
int xchg_result;
#define SET if :: state != EV_SET -> \
atomic { /* xchg_result=xchg(state, EV_SET) */ \
xchg_result = state; \
state = EV_SET; \
} \
if :: xchg_result == EV_BUSY -> RAW_SET; \
:: else -> skip; \
fi; \
:: else -> skip; \
fi
#define RESET if :: state == EV_SET -> atomic { state = state | EV_FREE; } \
:: else -> skip; \
fi
int tmp1, tmp2;
#define WAIT tmp1 = state; \
if :: tmp1 != EV_SET -> \
if :: tmp1 == EV_FREE -> \
RAW_RESET; \
atomic { /* tmp2=cas(state, EV_FREE, EV_BUSY) */ \
tmp2 = state; \
if :: tmp2 == EV_FREE -> state = EV_BUSY; \
:: else -> skip; \
fi; \
} \
if :: tmp2 == EV_SET -> tmp1 = EV_SET; \
:: else -> tmp1 = EV_BUSY; \
fi; \
:: else -> skip; \
fi; \
assert(tmp1 != EV_FREE); \
if :: tmp1 == EV_BUSY -> RAW_WAIT; \
:: else -> skip; \
fi; \
:: else -> skip; \
fi
#endif
active proctype waiter()
{
if
:: !value ->
RESET;
if
:: !value -> WAIT;
:: else -> skip;
fi;
:: else -> skip;
fi;
assert(value);
}
active proctype notifier()
{
value = true;
SET;
}

4
include/qemu/osdep.h
View File

@ -38,10 +38,12 @@
#include <strings.h>
#include <inttypes.h>
#include <limits.h>
/* Put unistd.h before time.h as that triggers localtime_r/gmtime_r
* function availability on recentish Mingw-w64 platforms. */
#include <unistd.h>
#include <time.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/time.h>

1
include/qemu/thread-win32.h
View File

@ -18,6 +18,7 @@ struct QemuSemaphore {
};
struct QemuEvent {
int value;
HANDLE event;
};

2
include/sysemu/os-win32.h
View File

@ -73,10 +73,12 @@
#define siglongjmp(env, val) longjmp(env, val)
/* Missing POSIX functions. Don't use MinGW-w64 macros. */
#ifndef CONFIG_LOCALTIME_R
#undef gmtime_r
struct tm *gmtime_r(const time_t *timep, struct tm *result);
#undef localtime_r
struct tm *localtime_r(const time_t *timep, struct tm *result);
#endif /* CONFIG_LOCALTIME_R */
static inline void os_setup_signal_handling(void) {}

4
include/ui/gtk.h
View File

@ -1,10 +1,6 @@
#ifndef UI_GTK_H
#define UI_GTK_H
#ifdef _WIN32
# define _WIN32_WINNT 0x0601 /* needed to get definition of MAPVK_VK_TO_VSC */
#endif
#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE
/* Work around an -Wstrict-prototypes warning in GTK headers */
#pragma GCC diagnostic push

3
qemu.nsi
View File

@ -139,6 +139,9 @@ Section "${PRODUCT} (required)"
; Write the uninstall keys for Windows
WriteRegStr HKLM "${UNINST_KEY}" "DisplayName" "QEMU"
!ifdef DISPLAYVERSION
WriteRegStr HKLM "${UNINST_KEY}" "DisplayVersion" "${DISPLAYVERSION}"
!endif
WriteRegStr HKLM "${UNINST_KEY}" "UninstallString" '"${UNINST_EXE}"'
WriteRegDWORD HKLM "${UNINST_KEY}" "NoModify" 1
WriteRegDWORD HKLM "${UNINST_KEY}" "NoRepair" 1

8
slirp/tcp_input.c
View File

@ -584,7 +584,13 @@ findso:
goto cont_input;
}
if((tcp_fconnect(so) == -1) && (errno != EINPROGRESS) && (errno != EWOULDBLOCK)) {
if ((tcp_fconnect(so) == -1) &&
#if defined(_WIN32)
socket_error() != WSAEWOULDBLOCK
#else
(errno != EINPROGRESS) && (errno != EWOULDBLOCK)
#endif
) {
u_char code=ICMP_UNREACH_NET;
DEBUG_MISC((dfd, " tcp fconnect errno = %d-%s\n",
errno,strerror(errno)));

9
ui/gtk.c
View File

@ -104,6 +104,15 @@
#define GDK_KEY_Pause GDK_Pause
#endif
/* Some older mingw versions lack this constant or have
* it conditionally defined */
#ifdef _WIN32
# ifndef MAPVK_VK_TO_VSC
# define MAPVK_VK_TO_VSC 0
# endif
#endif
#define HOTKEY_MODIFIERS (GDK_CONTROL_MASK | GDK_MOD1_MASK)
static const int modifier_keycode[] = {

2
util/oslib-win32.c
View File

@ -95,6 +95,7 @@ void qemu_anon_ram_free(void *ptr, size_t size)
}
}
#ifndef CONFIG_LOCALTIME_R
/* FIXME: add proper locking */
struct tm *gmtime_r(const time_t *timep, struct tm *result)
{
@ -118,6 +119,7 @@ struct tm *localtime_r(const time_t *timep, struct tm *result)
}
return p;
}
#endif /* CONFIG_LOCALTIME_R */
void qemu_set_block(int fd)
{

66
util/qemu-thread-win32.c
View File

@ -238,10 +238,34 @@ void qemu_sem_wait(QemuSemaphore *sem)
}
}
/* Wrap a Win32 manual-reset event with a fast userspace path. The idea
* is to reset the Win32 event lazily, as part of a test-reset-test-wait
* sequence. Such a sequence is, indeed, how QemuEvents are used by
* RCU and other subsystems!
*
* Valid transitions:
* - free->set, when setting the event
* - busy->set, when setting the event, followed by futex_wake
* - set->free, when resetting the event
* - free->busy, when waiting
*
* set->busy does not happen (it can be observed from the outside but
* it really is set->free->busy).
*
* busy->free provably cannot happen; to enforce it, the set->free transition
* is done with an OR, which becomes a no-op if the event has concurrently
* transitioned to free or busy (and is faster than cmpxchg).
*/
#define EV_SET 0
#define EV_FREE 1
#define EV_BUSY -1
void qemu_event_init(QemuEvent *ev, bool init)
{
/* Manual reset. */
ev->event = CreateEvent(NULL, TRUE, init, NULL);
ev->event = CreateEvent(NULL, TRUE, TRUE, NULL);
ev->value = (init ? EV_SET : EV_FREE);
}
void qemu_event_destroy(QemuEvent *ev)
@ -251,17 +275,51 @@ void qemu_event_destroy(QemuEvent *ev)
void qemu_event_set(QemuEvent *ev)
{
SetEvent(ev->event);
if (atomic_mb_read(&ev->value) != EV_SET) {
if (atomic_xchg(&ev->value, EV_SET) == EV_BUSY) {
/* There were waiters, wake them up. */
SetEvent(ev->event);
}
}
}
void qemu_event_reset(QemuEvent *ev)
{
ResetEvent(ev->event);
if (atomic_mb_read(&ev->value) == EV_SET) {
/* If there was a concurrent reset (or even reset+wait),
* do nothing. Otherwise change EV_SET->EV_FREE.
*/
atomic_or(&ev->value, EV_FREE);
}
}
void qemu_event_wait(QemuEvent *ev)
{
WaitForSingleObject(ev->event, INFINITE);
unsigned value;
value = atomic_mb_read(&ev->value);
if (value != EV_SET) {
if (value == EV_FREE) {
/* qemu_event_set is not yet going to call SetEvent, but we are
* going to do another check for EV_SET below when setting EV_BUSY.
* At that point it is safe to call WaitForSingleObject.
*/
ResetEvent(ev->event);
/* Tell qemu_event_set that there are waiters. No need to retry
* because there cannot be a concurent busy->free transition.
* After the CAS, the event will be either set or busy.
*/
if (atomic_cmpxchg(&ev->value, EV_FREE, EV_BUSY) == EV_SET) {
value = EV_SET;
} else {
value = EV_BUSY;
}
}
if (value == EV_BUSY) {
WaitForSingleObject(ev->event, INFINITE);
}
}
}
struct QemuThreadData {