[PATCH xserver 1/2] dix: Add ClientSignalAll()

[Chris Wilson]

This is a variant of ClientSignal() that signals all clients with an
optional matching sleeping client, function and closure.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 dix/dixutils.c | 22 ++++++++++++++++++++++
 include/dix.h  |  8 ++++++++
 2 files changed, 30 insertions(+)

diff --git a/dix/dixutils.c b/dix/dixutils.c
index 205550e..b6b0023 100644
--- a/dix/dixutils.c
+++ b/dix/dixutils.c
@@ -620,6 +620,28 @@ ClientSignal(ClientPtr client)
     return FALSE;
 }
 
+int
+ClientSignalAll(ClientPtr client, ClientSleepProcPtr function, void *closure)
+{
+    SleepQueuePtr q;
+    int count = 0;
+
+    for (q = sleepQueue; q; q = q->next) {
+        if (!(client == CLIENT_SIGNAL_ANY || q->client == client))
+            continue;
+
+        if (!(function == CLIENT_SIGNAL_ANY || q->function == function))
+            continue;
+
+        if (!(closure == CLIENT_SIGNAL_ANY || q->closure == closure))
+            continue;
+
+        count += QueueWorkProc(q->function, q->client, q->closure);
+    }
+
+    return count;
+}
+
 void
 ClientWakeup(ClientPtr client)
 {
diff --git a/include/dix.h b/include/dix.h
index 921156b..d49d055 100644
--- a/include/dix.h
+++ b/include/dix.h
@@ -255,6 +255,14 @@ extern _X_EXPORT Bool ClientSleep(ClientPtr client,
 extern _X_EXPORT Bool ClientSignal(ClientPtr /*client */ );
 #endif                          /* ___CLIENTSIGNAL_DEFINED___ */
 
+#ifndef ___CLIENTSIGNALALL_DEFINED___
+#define ___CLIENTSIGNALALL_DEFINED___
+#define CLIENT_SIGNAL_ANY ((void *)-1)
+extern _X_EXPORT int ClientSignalAll(ClientPtr /*client*/,
+                                     ClientSleepProcPtr /*function*/,
+                                     void * /*closure*/);
+#endif                          /* ___CLIENTSIGNALALL_DEFINED___ */
+
 extern _X_EXPORT void ClientWakeup(ClientPtr /*client */ );
 
 extern _X_EXPORT Bool ClientIsAsleep(ClientPtr /*client */ );
-- 
2.7.0