[Beignet] [PATCH] Add pfn_notify support in clCreateContext.

[Yang Rong]

Remove assert in cl_create_context when pfn_notify is not NULL,
and save it, but don't used now.
Per spec, driver should call it when devices becomes unavailable.
Now driver doesn't check the device status.

Signed-off-by: Yang Rong <rong.r.yang at intel.com>
---
 src/cl_context.c |  5 ++++-
 src/cl_context.h | 10 +++++++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/cl_context.c b/src/cl_context.c
index a48436c..822fdf5 100644
--- a/src/cl_context.c
+++ b/src/cl_context.c
@@ -123,7 +123,6 @@ cl_create_context(const cl_context_properties *  properties,
   cl_int err = CL_SUCCESS;
   cl_uint prop_len = 0;
   /* XXX */
-  FATAL_IF (pfn_notify != NULL || user_data != NULL, "Unsupported call back");
   FATAL_IF (num_devices != 1, "Only one device is supported");
 
   /* Check that we are getting the right platform */
@@ -144,6 +143,10 @@ cl_create_context(const cl_context_properties *  properties,
   /* Attach the device to the context */
   ctx->device = *devices;
 
+  /* Save the user callback and user data*/
+  ctx->pfn_notify = pfn_notify;
+  ctx->user_data = user_data;
+
 exit:
   if (errcode_ret != NULL)
     *errcode_ret = err;
diff --git a/src/cl_context.h b/src/cl_context.h
index 718d589..b1ef479 100644
--- a/src/cl_context.h
+++ b/src/cl_context.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright © 2012 Intel Corporation
  *
  * This library is free software; you can redistribute it and/or
@@ -44,8 +44,8 @@ struct _cl_context_prop {
   enum _cl_gl_context_type gl_type;
   cl_context_properties gl_context;
   union {
-    cl_context_properties egl_display; 
-    cl_context_properties glx_display; 
+    cl_context_properties egl_display;
+    cl_context_properties glx_display;
     cl_context_properties wgl_hdc;
     cl_context_properties cgl_sharegroup;
   };
@@ -72,6 +72,10 @@ struct _cl_context {
   struct _cl_context_prop props;
   cl_context_properties * prop_user; /* a copy of user passed context properties when create context */
   cl_uint                 prop_len;  /* count of the properties */
+  void (CL_CALLBACK *pfn_notify)(const char *, const void *, size_t, void *);
+                                     /* User's callback when error occur in context */
+  void *user_data;                   /* A pointer to user supplied data */
+
 };
 
 /* Implement OpenCL function */
-- 
1.8.1.2