os: Switch server to poll(2) [v3]

Eliminates all of the fd_set mangling in the server main thread

v2: Listen for POLLOUT while writes are blocked.

v3: Only mark client not ready on EAGAIN return from read

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/dix/dispatch.c b/dix/dispatch.c
index 3b9600e27..a3c2fbb31 100644
--- a/dix/dispatch.c
+++ b/dix/dispatch.c
@@ -242,12 +242,14 @@ void Dispatch(void);
 
 static struct xorg_list ready_clients;
 static struct xorg_list saved_ready_clients;
+struct xorg_list output_pending_clients;
 
 static void
 init_client_ready(void)
 {
     xorg_list_init(&ready_clients);
     xorg_list_init(&saved_ready_clients);
+    xorg_list_init(&output_pending_clients);
 }
 
 Bool
@@ -3411,6 +3413,7 @@ CloseDownClient(ClientPtr client)
             UngrabServer(client);
         }
         mark_client_not_ready(client);
+        xorg_list_del(&client->output_pending);
         BITCLEAR(grabWaiters, client->index);
         DeleteClientFromAnySelections(client);
         ReleaseActiveGrabs(client);
@@ -3501,6 +3504,7 @@ InitClient(ClientPtr client, int i, void *ospriv)
 {
     client->index = i;
     xorg_list_init(&client->ready);
+    xorg_list_init(&client->output_pending);
     client->clientAsMask = ((Mask) i) << CLIENTOFFSET;
     client->closeDownMode = i ? DestroyAll : RetainPermanent;
     client->requestVector = InitialVector;