gallium,clover: add OpenCL interoperability support for CL events

v2: - move interop.cpp to clover/api
    - change intptr_t to void* in the interface
    - add a virtual function fence() to simplify some code

v3: - use bool in the interface
v4: - enclose the last two interop functions in try..catch

Reviewed-by: Francisco Jerez <[email protected]>

1 files changed, 64 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/clover/api/interop.cpp b/src/gallium/state_trackers/clover/api/interop.cpp
new file mode 100644
index 00000000000..ea0c7c73c30
--- /dev/null
+++ b/src/gallium/state_trackers/clover/api/interop.cpp
@@ -0,0 +1,64 @@
+//
+// Copyright 2015 Advanced Micro Devices, Inc.
+// All Rights Reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+// OTHER DEALINGS IN THE SOFTWARE.
+//
+
+#include "core/event.hpp"
+#include "api/util.hpp"
+
+using namespace clover;
+
+extern "C" {
+
+PUBLIC bool
+opencl_dri_event_add_ref(cl_event event)
+{
+   return clRetainEvent(event) == CL_SUCCESS;
+}
+
+PUBLIC bool
+opencl_dri_event_release(cl_event event)
+{
+   return clReleaseEvent(event) == CL_SUCCESS;
+}
+
+PUBLIC bool
+opencl_dri_event_wait(cl_event event, uint64_t timeout) try {
+   if (!timeout) {
+      return obj(event).status() == CL_COMPLETE;
+   }
+
+   obj(event).wait();
+   return true;
+
+} catch (error &) {
+   return false;
+}
+
+PUBLIC struct pipe_fence_handle *
+opencl_dri_event_get_fence(cl_event event) try {
+   return obj(event).fence();
+
+} catch (error &) {
+   return NULL;
+}
+
+}