From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Liu Subject: Re: [BUG] xs.watch and xs.unwatch are unreliable Date: Wed, 2 Mar 2016 16:03:38 +0000 Message-ID: <20160302160338.GA23172@citrix.com> References: <834E88AE-F08A-415F-8C24-D4FDEFEB01B3@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <834E88AE-F08A-415F-8C24-D4FDEFEB01B3@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Sergei Lebedev Cc: Andrew Cooper , Wei Liu , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org SSd2ZSBDQydlZCBzb21lIHBlb3BsZSB3aG8gbWlnaHQgaGF2ZSBhbiBpZGVhIHdoZXRoZXIgdGhl eSBhcmUgcmVwbHlpbmcKb24gdGhpcyBiZWhhdmlvdXIuIEkgZG91YnQgdGhhdCBidXQgbGV0J3Mg YmV0dGVyIGJlIHN1cmUuLi4KCk9uIFR1ZSwgTWFyIDAxLCAyMDE2IGF0IDExOjE3OjU0UE0gKzAz MDAsIFNlcmdlaSBMZWJlZGV2IHdyb3RlOgo+IEhpIGxpc3QsCj4gCj4gSeKAmXZlIGluaXRpYWxs eSB3YW50ZWQgdG8gcmVwb3J0IGFub3RoZXIgaW5jb25zaXN0ZW5jeSBpbiBgYHhlbi5sb3dsZXZl bC54c2BgIGRvY3VtZW50YXRpb24sIGJ1dCB0aGlzIHRpbWUgdGhlIGlzc3VlIGlzIG1vcmUgc3Vi dGxlLgo+IAo+IEJvdGggYGB4cy53YXRjaGBgIGFuZCBgYHhzLnVud2F0Y2hgYCBhY2NlcHQgdHdv IGFyZ3VtZW50czogYSBwYXRoIHRvIHdhdGNoIGFuZCBhIHRva2VuLiBBY2NvcmRpbmcgdG8gdGhl IGRvY3VtZW50YXRpb24sIHRoZSBzZWNvbmQgYXJndW1lbnQgbXVzdCBiZSBhIHN0cmluZywgd2hp Y2ggbWFrZXMgc2Vuc2UsIHNpbmNlIHRoZSB0b2tlbiBzaG91bGQgYmUgc2VudCBkaXJlY3RseSB0 byBYZW5TdG9yZS4gSW5zdGVhZCBvZiBkb2luZyB0aGUgc2ltcGxlIHRoaW5nICh0cmFuc21pdHRp bmcgdGhlIHRva2VuIGFzLWlzKSwgdGhlIGltcGxlbWVudGF0aW9uIG1ha2VzIGEgbmV3IHRva2Vu IGZyb20gKnRoZSBwb2ludGVyKiB0byB0aGUgdG9rZW4gb2JqZWN0IGFuZCBzZW5kcyBpdCBpbnN0 ZWFkOgo+IAo+ICAgICBQeU9iamVjdCAqdG9rZW47Cj4gICAgIGNoYXIgdG9rZW5fc3RyW01BWF9T VFJMRU4odW5zaWduZWQgbG9uZykgKyAxXTsKPiAKPiAgICAgc25wcmludGYodG9rZW5fc3RyLCBz aXplb2YodG9rZW5fc3RyKSwgIiVsaSIsICh1bnNpZ25lZCBsb25nKXRva2VuKTsKPiAKPiBUaGlz IGRvZXMgd29yayBmb3Igc2ltcGxlIGNhc2VzLCBlLmcuIGlmIGEgdG9rZW4gaXMgYSBzdHJpbmcg bGl0ZXJhbCAKPiAKPiAgICAgPj4+IGZyb20geGVuLmxvd2xldmVsLnhzIGltcG9ydCB4cwo+ICAg ICA+Pj4gaCA9IHhzKCkKPiAgICAgPj4+IGgud2F0Y2go4oCcQGludHJvZHVjZURvbWFpbuKAnSwg 4oCcdG9rZW7igJ0pCj4gICAgID4+PiBoLnVud2F0Y2go4oCcQGludHJvZHVjZURvbWFpbuKAnSwg 4oCcdG9rZW7igJ0pCj4gCj4gb3IgYSBzbWFsbCBudW1iZXIKPiAKPiAgICAgPj4+IGgud2F0Y2go 4oCcQGludHJvZHVjZURvbWFpbuKAnSwgNDIpCj4gICAgID4+PiBoLnVud2F0Y2go4oCcQGludHJv ZHVjZURvbWFpbuKAnSwgNDIpCj4gCj4gQnV0IGluIHRoZSBnZW5lcmFsIGNhc2UgdGhpcyBpcyBi cm9rZW4KPiAKPiAgICAgPj4+IGgud2F0Y2goIkBpbnRyb2R1Y2VEb21haW4iLCAxMDAwMDAwMDAw MDAwMDAwMDAwMDAwMDAwMDAwMDApCj4gICAgID4+PiBoLnVud2F0Y2goIkBpbnRyb2R1Y2VEb21h aW4iLCAxMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDApCj4gICAgIFRyYWNlYmFjayAobW9z dCByZWNlbnQgY2FsbCBsYXN0KToKPiAgICAgICBGaWxlICI8c3RkaW4+IiwgbGluZSAxLCBpbiA8 bW9kdWxlPgo+ICAgICB4ZW4ubG93bGV2ZWwueHMuRXJyb3I6ICgyLCAnTm8gc3VjaCBmaWxlIG9y IGRpcmVjdG9yeeKAmSkKPiAKPiBIZXJl4oCZcyBhbm90aGVyIGV4YW1wbGUgd2l0aCBhIHN0cmlu ZyB0b2tlbgo+IAo+ICAgICA+Pj4gdG9rZW4xID0gc3RyKDEwMDAwMDAwMDAwMDAwMDAwMDAwMDAw MDAwMDAwMCkKPiAgICAgPj4+IHRva2VuMiA9IHN0cigxMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAw MDAwMDApCj4gICAgID4+PiB0b2tlbjEgPT0gdG9rZW4yCj4gICAgIFRydWUKPiAgICAgPj4+IGgu d2F0Y2goIkBpbnRyb2R1Y2VEb21haW4iLCB0b2tlbjEpCj4gICAgID4+PiBoLnVud2F0Y2goIkBp bnRyb2R1Y2VEb21haW4iLCB0b2tlbjIpCj4gICAgIFRyYWNlYmFjayAobW9zdCByZWNlbnQgY2Fs bCBsYXN0KToKPiAgICAgICBGaWxlICI8c3RkaW4+IiwgbGluZSAxLCBpbiA8bW9kdWxlPgo+ICAg ICB4ZW4ubG93bGV2ZWwueHMuRXJyb3I6ICgyLCAnTm8gc3VjaCBmaWxlIG9yIGRpcmVjdG9yeeKA mSkKPiAKPiBJ4oCZbSBub3Qgc3VyZSB3aGF0IHdvdWxkIGJlIHRoZSBiZXN0IHdheSB0byBoYW5k bGUgdGhpcyBhcyB0aGVyZSBtaWdodCBiZSBleGlzdGluZyBjb2RlIHJlbHlpbmcgb24gdGhpcyB1 bmRvY3VtZW50ZWQgYmVoYXZpb3VyLiBXaGF0IGRvIHlvdSB0aGluaz8KPiAKCkluIGFueSBjYXNl IHRoaXMgbG9va3MgbGlrZSBhIHJlYWwgYnVnLgoKVGhlIGZpeCAoYXMgeW91IHNhaWQpIGlzIHRv IHRyYW5zbWl0IHRoZSB0b2tlbi4gSSBkb24ndCB0aGluayB5b3VyCnByb3Bvc2VkIGZpeCB3b3Vs ZCBicmVhayBleGlzdGluZyB1c2VycyB0aG91Z2guCgpXZWkuCgoKPiBSZWdhcmRzLAo+IFNlcmdl aQo+IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4gWGVu LWRldmVsIG1haWxpbmcgbGlzdAo+IFhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCj4gaHR0cDovL2xp c3RzLnhlbi5vcmcveGVuLWRldmVsCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4u b3JnCmh0dHA6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=