Added new API, hipMemPtrGetInfo

1. This API returns memory allocation size of pointer
2. Added test to check its functionality

Change-Id: I87976d817b5a6ca5530336c09e7cb0420601cb2c

tests/src/runtimeApi/memory/hipMemPtrGetInfo.cpp

@@ -0,0 +1,52 @@
+/*
+Copyright (c) 2015-2017 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.
+*/
+
+/* HIT_START
+ * BUILD: %t %s ../../test_common.cpp
+ * RUN: %t
+ * HIT_END
+ */
+
+#include"test_common.h"
+
+struct {
+  float a;
+  int b;
+  void *c;
+} Struct ;
+
+int main(){
+  int *iPtr;
+  float *fPtr;
+  struct Struct *sPtr;
+  size_t sSetSize = 1024, sGetSize;
+  hipMalloc(&iPtr, sSetSize);
+  hipMalloc(&fPtr, sSetSize);
+  hipMalloc(&sPtr, sSetSize);
+  hipMemPtrGetInfo(iPtr, &sGetSize);
+  assert(sGetSize == sSetSize);
+  hipMemPtrGetInfo(fPtr, &sGetSize);
+  assert(sGetSize == sSetSize);
+  hipMemPtrGetInfo(sPtr, &sGetSize);
+  assert(sGetSize == sSetSize);
+  passed();
+}