Add driBOAddListItemAndReference()

Increment refcount at the same time a buffer is added to a list.

Reduces pthread mutex lock/unlock overhead.

2 files changed, 30 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.c b/src/mesa/drivers/dri/common/dri_bufmgr.c
index 4e50be1532..f5a4945a3b 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.c
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.c
@@ -508,6 +508,31 @@ driBOAddListItem(struct _DriBufferList * list, struct _DriBufferObject *buf,
    _glthread_UNLOCK_MUTEX(buf->mutex);
 }
 
+
+void
+driBOAddListItemAndReference(struct _DriBufferList * list, 
+			     struct _DriBufferObject *buf,
+			     unsigned flags, unsigned mask)
+{
+   int newItem;
+
+   _glthread_LOCK_MUTEX(buf->mutex);
+   _glthread_LOCK_MUTEX(bmMutex);
+   BM_CKFATAL(drmAddValidateItem(&list->drmBuffers, driBOKernel(buf),
+                                 flags, mask, &newItem));
+   if (buf->pool->validate)
+       BM_CKFATAL(drmAddValidateItem(&list->driBuffers, (drmBO *) buf,
+				     flags, mask, &newItem));
+
+   if (++buf->refCount == 1) {
+      BM_CKFATAL(-EINVAL);
+   }
+
+   _glthread_UNLOCK_MUTEX(bmMutex);
+   _glthread_UNLOCK_MUTEX(buf->mutex);
+}
+
+
 void
 driBOFence(struct _DriBufferObject *buf, struct _DriFenceObject *fence)
 {
diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.h b/src/mesa/drivers/dri/common/dri_bufmgr.h
index 0fbcb29af0..4e45745668 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.h
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.h
@@ -87,6 +87,11 @@ extern void driBOResetList(struct _DriBufferList * list);
 extern void driBOAddListItem(struct _DriBufferList * list, 
 			     struct _DriBufferObject *buf,
                              unsigned flags, unsigned mask);
+
+extern void driBOAddListItemAndReference(struct _DriBufferList * list, 
+					 struct _DriBufferObject *buf,
+					 unsigned flags, unsigned mask);
+
 extern void driBOValidateList(int fd, struct _DriBufferList * list);
 extern void driBOFreeList(struct _DriBufferList * list);