From 785053d033e73d2deb0ded4b97eabfd881991978 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Mon, 9 Jan 2017 18:10:21 -0800 Subject: [PATCH] AttendClient of grab-pervious client must queue to saved_ready_clients [v2] A client which is attended while a grab is blocking execution of its requests needs to be placed in the saved_ready_clients list so that it will get scheduled once the grab terminates. Otherwise, if the client never sends another request, there is no way for it to be placed in the ready_clients list. v2: Wrap comment above mark_client_saved_ready. Remove test for OS_COMM_IGNORED which will always be true. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99333 Reviewed-by: Adam Jackson Signed-off-by: Keith Packard --- dix/dispatch.c | 10 ++++++++++ include/dixstruct.h | 6 ++++++ os/connection.c | 4 ++++ 3 files changed, 20 insertions(+) diff --git a/dix/dispatch.c b/dix/dispatch.c index 3d0fe26fd..78ac095b1 100644 --- a/dix/dispatch.c +++ b/dix/dispatch.c @@ -266,6 +266,16 @@ mark_client_ready(ClientPtr client) xorg_list_append(&client->ready, &ready_clients); } +/* + * Client has requests queued or data on the network, but awaits a + * server grab release + */ +void mark_client_saved_ready(ClientPtr client) +{ + if (xorg_list_is_empty(&client->ready)) + xorg_list_append(&client->ready, &saved_ready_clients); +} + /* Client has no requests queued and no data on network */ void mark_client_not_ready(ClientPtr client) diff --git a/include/dixstruct.h b/include/dixstruct.h index d71b0ac05..21a6b8a8d 100644 --- a/include/dixstruct.h +++ b/include/dixstruct.h @@ -143,6 +143,12 @@ extern void SmartScheduleStopTimer(void); /* Client has requests queued or data on the network */ void mark_client_ready(ClientPtr client); +/* + * Client has requests queued or data on the network, but awaits a + * server grab release + */ +void mark_client_saved_ready(ClientPtr client); + /* Client has no requests queued and no data on network */ void mark_client_not_ready(ClientPtr client); diff --git a/os/connection.c b/os/connection.c index a901ebf3c..62e298072 100644 --- a/os/connection.c +++ b/os/connection.c @@ -1067,6 +1067,10 @@ AttendClient(ClientPtr client) set_poll_client(client); if (listen_to_client(client)) mark_client_ready(client); + else { + /* grab active, mark ready when grab goes away */ + mark_client_saved_ready(client); + } } /* make client impervious to grabs; assume only executing client calls this */