From 90e6dc6de1ac339212989fd8e54131b196ebb369 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Tue, 13 Mar 2012 09:28:15 +1000
Subject: [PATCH] Xext: add a private field to SyncSystemCounters

Will be used to store counter-specific data.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: James Jones <jajones@nvidia.com>
---
 Xext/sync.c    | 10 ++++++++++
 Xext/syncsrv.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/Xext/sync.c b/Xext/sync.c
index 0bc0fb872..a692b6e29 100644
--- a/Xext/sync.c
+++ b/Xext/sync.c
@@ -113,6 +113,14 @@ static void SyncInitServerTime(void);
 
 static void SyncInitIdleTime(void);
 
+static inline void*
+SysCounterGetPrivate(SyncCounter *counter)
+{
+    BUG_WARN(!IsSystemCounter(counter));
+
+    return counter->pSysCounterInfo ? counter->pSysCounterInfo->private : NULL;
+}
+
 static Bool
 SyncCheckWarnIsCounter(const SyncObject * pSync, const char *warning)
 {
@@ -958,6 +966,7 @@ SyncCreateSystemCounter(const char *name,
         psci->counterType = counterType;
         psci->QueryValue = QueryValue;
         psci->BracketValues = BracketValues;
+        psci->private = NULL;
         XSyncMaxValue(&psci->bracket_greater);
         XSyncMinValue(&psci->bracket_less);
         xorg_list_add(&psci->entry, &SysCounterList);
@@ -1106,6 +1115,7 @@ FreeCounter(void *env, XID id)
     }
     if (IsSystemCounter(pCounter)) {
         xorg_list_del(&pCounter->pSysCounterInfo->entry);
+        free(pCounter->pSysCounterInfo->private);
         free(pCounter->pSysCounterInfo);
     }
     free(pCounter);
diff --git a/Xext/syncsrv.h b/Xext/syncsrv.h
index f2f7a0fb9..2fa868790 100644
--- a/Xext/syncsrv.h
+++ b/Xext/syncsrv.h
@@ -83,6 +83,7 @@ typedef struct _SysCounterInfo {
     SyncCounterType counterType;        /* how can this counter change */
     SyncSystemCounterQueryValue QueryValue;
     SyncSystemCounterBracketValues BracketValues;
+    void *private;
     struct xorg_list entry;
 } SysCounterInfo;