Reinitialize new tag taken from TagAllocator

Change-Id: I1fbc06224e64b77de0f481553eddc4abde8f8a1c

runtime/event/event.cpp

@@ -674,12 +674,6 @@ HwTimeStamps *Event::getHwTimeStamp() {
     if (!timeStampNode) {
         TagAllocator<HwTimeStamps> *allocator = getCommandQueue()->getDevice().getMemoryManager()->getEventTsAllocator();
         timeStampNode = allocator->getTag();
-        timeStampNode->tag->GlobalStartTS = 0;
-        timeStampNode->tag->ContextStartTS = 0;
-        timeStampNode->tag->GlobalEndTS = 0;
-        timeStampNode->tag->ContextEndTS = 0;
-        timeStampNode->tag->GlobalCompleteTS = 0;
-        timeStampNode->tag->ContextCompleteTS = 0;
     }
     node = timeStampNode;
     return node->tag;
@@ -701,7 +695,6 @@ HwPerfCounter *Event::getHwPerfCounter() {
     if (!perfCounterNode) {
         TagAllocator<HwPerfCounter> *allocator = getCommandQueue()->getDevice().getMemoryManager()->getEventPerfCountAllocator();
         perfCounterNode = allocator->getTag();
-        memset(perfCounterNode->tag, 0, sizeof(HwPerfCounter));
     }
     node = perfCounterNode;
     return node->tag;

runtime/event/hw_timestamps.h

@@ -27,6 +27,14 @@
 namespace OCLRT {
 
 struct HwTimeStamps {
+    void initialize() {
+        GlobalStartTS = 0;
+        ContextStartTS = 0;
+        GlobalEndTS = 0;
+        ContextEndTS = 0;
+        GlobalCompleteTS = 0;
+        ContextCompleteTS = 0;
+    }
     uint64_t GlobalStartTS;
     uint64_t ContextStartTS;
     uint64_t GlobalEndTS;

runtime/event/perf_counter.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Intel Corporation
+ * Copyright (c) 2017 - 2018, Intel Corporation
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -28,6 +28,10 @@
 namespace OCLRT {
 
 struct HwPerfCounter {
+    void initialize() {
+        HWPerfCounters = {};
+        HWTimeStamp.initialize();
+    }
     HwPerfCounters HWPerfCounters;
     HwTimeStamps HWTimeStamp;
 };

runtime/helpers/timestamp_packet.h

@@ -53,6 +53,8 @@ class TimestampPacket {
 
     uint32_t pickDataValue(DataIndex index) const { return data[static_cast<uint32_t>(index)]; }
 
+    void initialize() { data = {{1, 1, 1, 1}}; }
+
   protected:
     std::array<uint32_t, static_cast<uint32_t>(DataIndex::Max)> data = {{1, 1, 1, 1}};
 };

runtime/utilities/tag_allocator.h

@@ -91,6 +91,7 @@ class TagAllocator {
         }
         usedTags.pushFrontOne(*node);
         node->incRefCount();
+        node->tag->initialize();
         return node;
     }