Message ID | 1399458461-3997-17-git-send-email-stefanha@redhat.com |
---|---|
State | New |
Headers | show |
Il 07/05/2014 12:27, Stefan Hajnoczi ha scritto: > Each QEMUWin32AIOState event notifier is associated with an AioContext. > Since BlockDriverState instances can use different AioContexts we cannot > continue to use a global QEMUWin32AIOState. > > Let each BDRVRawState have its own QEMUWin32AIOState and free it when > BDRVRawState is closed. > > Cc: Paolo Bonzini <pbonzini@redhat.com> > Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> > --- > block/raw-aio.h | 1 + > block/raw-win32.c | 29 ++++++++++++++++------------- > block/win32-aio.c | 8 ++++++++ > 3 files changed, 25 insertions(+), 13 deletions(-) > > diff --git a/block/raw-aio.h b/block/raw-aio.h > index 55e0ccc..6269f3d 100644 > --- a/block/raw-aio.h > +++ b/block/raw-aio.h > @@ -45,6 +45,7 @@ void laio_attach_aio_context(void *s, AioContext *new_context); > #ifdef _WIN32 > typedef struct QEMUWin32AIOState QEMUWin32AIOState; > QEMUWin32AIOState *win32_aio_init(void); > +void win32_aio_cleanup(QEMUWin32AIOState *aio); > int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile); > BlockDriverAIOCB *win32_aio_submit(BlockDriverState *bs, > QEMUWin32AIOState *aio, HANDLE hfile, > diff --git a/block/raw-win32.c b/block/raw-win32.c > index 064ea31..cf1e9ce 100644 > --- a/block/raw-win32.c > +++ b/block/raw-win32.c > @@ -36,8 +36,6 @@ > #define FTYPE_CD 1 > #define FTYPE_HARDDISK 2 > > -static QEMUWin32AIOState *aio; > - > typedef struct RawWin32AIOData { > BlockDriverState *bs; > HANDLE hfile; > @@ -300,15 +298,6 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, > > raw_parse_flags(flags, &access_flags, &overlapped); > > - if ((flags & BDRV_O_NATIVE_AIO) && aio == NULL) { > - aio = win32_aio_init(); > - if (aio == NULL) { > - error_setg(errp, "Could not initialize AIO"); > - ret = -EINVAL; > - goto fail; > - } > - } > - > if (filename[0] && filename[1] == ':') { > snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", filename[0]); > } else if (filename[0] == '\\' && filename[1] == '\\') { > @@ -335,13 +324,21 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, > } > > if (flags & BDRV_O_NATIVE_AIO) { > - ret = win32_aio_attach(aio, s->hfile); > + s->aio = win32_aio_init(); > + if (s->aio == NULL) { > + CloseHandle(s->hfile); > + error_setg(errp, "Could not initialize AIO"); > + ret = -EINVAL; > + goto fail; > + } > + > + ret = win32_aio_attach(s->aio, s->hfile); > if (ret < 0) { > + win32_aio_cleanup(s->aio); > CloseHandle(s->hfile); > error_setg_errno(errp, -ret, "Could not enable AIO"); > goto fail; > } > - s->aio = aio; > } > > raw_probe_alignment(bs); > @@ -389,6 +386,12 @@ static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs, > static void raw_close(BlockDriverState *bs) > { > BDRVRawState *s = bs->opaque; > + > + if (s->aio) { > + win32_aio_cleanup(s->aio); > + s->aio = NULL; > + } > + > CloseHandle(s->hfile); > if (bs->open_flags & BDRV_O_TEMPORARY) { > unlink(bs->filename); > diff --git a/block/win32-aio.c b/block/win32-aio.c > index 5d1d199..b43b166 100644 > --- a/block/win32-aio.c > +++ b/block/win32-aio.c > @@ -204,3 +204,11 @@ out_free_state: > g_free(s); > return NULL; > } > + > +void win32_aio_cleanup(QEMUWin32AIOState *aio) > +{ > + qemu_aio_set_event_notifier(&aio->e, NULL); > + CloseHandle(aio->hIOCP); > + event_notifier_cleanup(&aio->e); > + g_free(aio); > +} > Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/block/raw-aio.h b/block/raw-aio.h index 55e0ccc..6269f3d 100644 --- a/block/raw-aio.h +++ b/block/raw-aio.h @@ -45,6 +45,7 @@ void laio_attach_aio_context(void *s, AioContext *new_context); #ifdef _WIN32 typedef struct QEMUWin32AIOState QEMUWin32AIOState; QEMUWin32AIOState *win32_aio_init(void); +void win32_aio_cleanup(QEMUWin32AIOState *aio); int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile); BlockDriverAIOCB *win32_aio_submit(BlockDriverState *bs, QEMUWin32AIOState *aio, HANDLE hfile, diff --git a/block/raw-win32.c b/block/raw-win32.c index 064ea31..cf1e9ce 100644 --- a/block/raw-win32.c +++ b/block/raw-win32.c @@ -36,8 +36,6 @@ #define FTYPE_CD 1 #define FTYPE_HARDDISK 2 -static QEMUWin32AIOState *aio; - typedef struct RawWin32AIOData { BlockDriverState *bs; HANDLE hfile; @@ -300,15 +298,6 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, raw_parse_flags(flags, &access_flags, &overlapped); - if ((flags & BDRV_O_NATIVE_AIO) && aio == NULL) { - aio = win32_aio_init(); - if (aio == NULL) { - error_setg(errp, "Could not initialize AIO"); - ret = -EINVAL; - goto fail; - } - } - if (filename[0] && filename[1] == ':') { snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", filename[0]); } else if (filename[0] == '\\' && filename[1] == '\\') { @@ -335,13 +324,21 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, } if (flags & BDRV_O_NATIVE_AIO) { - ret = win32_aio_attach(aio, s->hfile); + s->aio = win32_aio_init(); + if (s->aio == NULL) { + CloseHandle(s->hfile); + error_setg(errp, "Could not initialize AIO"); + ret = -EINVAL; + goto fail; + } + + ret = win32_aio_attach(s->aio, s->hfile); if (ret < 0) { + win32_aio_cleanup(s->aio); CloseHandle(s->hfile); error_setg_errno(errp, -ret, "Could not enable AIO"); goto fail; } - s->aio = aio; } raw_probe_alignment(bs); @@ -389,6 +386,12 @@ static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs, static void raw_close(BlockDriverState *bs) { BDRVRawState *s = bs->opaque; + + if (s->aio) { + win32_aio_cleanup(s->aio); + s->aio = NULL; + } + CloseHandle(s->hfile); if (bs->open_flags & BDRV_O_TEMPORARY) { unlink(bs->filename); diff --git a/block/win32-aio.c b/block/win32-aio.c index 5d1d199..b43b166 100644 --- a/block/win32-aio.c +++ b/block/win32-aio.c @@ -204,3 +204,11 @@ out_free_state: g_free(s); return NULL; } + +void win32_aio_cleanup(QEMUWin32AIOState *aio) +{ + qemu_aio_set_event_notifier(&aio->e, NULL); + CloseHandle(aio->hIOCP); + event_notifier_cleanup(&aio->e); + g_free(aio); +}
Each QEMUWin32AIOState event notifier is associated with an AioContext. Since BlockDriverState instances can use different AioContexts we cannot continue to use a global QEMUWin32AIOState. Let each BDRVRawState have its own QEMUWin32AIOState and free it when BDRVRawState is closed. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> --- block/raw-aio.h | 1 + block/raw-win32.c | 29 ++++++++++++++++------------- block/win32-aio.c | 8 ++++++++ 3 files changed, 25 insertions(+), 13 deletions(-)