Merge branch 'origin/pghafari/vdi-prototype' into lmoriche/amd-master

Change-Id: Id3b833d405596735becb3346f3b08c6da57033fe

rocclr/platform/object.cpp

@@ -0,0 +1,75 @@
+//
+// Copyright (c) 2010 Advanced Micro Devices, Inc. All rights reserved.
+//
+
+#include "platform/object.hpp"
+
+#include <cstring>
+
+namespace amd {
+
+Atomic<ObjectMetadata::Key> ObjectMetadata::nextKey_ = 1;
+
+
+ObjectMetadata::Destructor ObjectMetadata::destructors_[OCL_MAX_KEYS] = {NULL};
+
+
+bool ObjectMetadata::check(Key key) { return key > 0 && key <= OCL_MAX_KEYS; }
+
+ObjectMetadata::Key ObjectMetadata::createKey(Destructor destructor) {
+  Key key = nextKey_++;
+
+  if (!check(key)) {
+    return 0;
+  }
+
+  destructors_[key - 1] = destructor;
+  return key;
+}
+
+ObjectMetadata::~ObjectMetadata() {
+  if (!values_) {
+    return;
+  }
+
+  for (size_t i = 0; i < OCL_MAX_KEYS; ++i) {
+    if (values_[i] && destructors_[i]) {
+      destructors_[i](values_[i]);
+    }
+  }
+
+  delete[] values_;
+}
+
+void* ObjectMetadata::getValueForKey(Key key) const {
+  if (!values_ || !check(key)) {
+    return NULL;
+  }
+
+  return values_[key - 1];
+}
+
+bool ObjectMetadata::setValueForKey(Key key, Value value) {
+  if (!check(key)) {
+    return false;
+  }
+
+  while (!values_) {
+    Value* values = new Value[OCL_MAX_KEYS];
+    memset(values, '\0', sizeof(Value) * OCL_MAX_KEYS);
+
+    if (!values_.compareAndSet(NULL, values)) {
+      delete[] values;
+    }
+  }
+
+  size_t index = key - 1;
+  Value prev = AtomicOperation::swap(value, &values_[index]);
+  if (prev && destructors_[index] != NULL) {
+    destructors_[index](prev);
+  }
+
+  return true;
+}
+
+}  // namespace amd