8257162: Initialize ThreadLocalAllocBuffer members

Reviewed-by: shade, ayang, sjohanss, pliden

Author: Thomas Schatzl

src/hotspot/share/gc/shared/threadLocalAllocBuffer.cpp

@@ -37,6 +37,27 @@ size_t       ThreadLocalAllocBuffer::_max_size = 0;
 int          ThreadLocalAllocBuffer::_reserve_for_allocation_prefetch = 0;
 unsigned int ThreadLocalAllocBuffer::_target_refills = 0;
 
+ThreadLocalAllocBuffer::ThreadLocalAllocBuffer() :
+  _start(NULL),
+  _top(NULL),
+  _pf_top(NULL),
+  _end(NULL),
+  _allocation_end(NULL),
+  _desired_size(0),
+  _refill_waste_limit(0),
+  _allocated_before_last_gc(0),
+  _bytes_since_last_sample_point(0),
+  _number_of_refills(0),
+  _fast_refill_waste(0),
+  _slow_refill_waste(0),
+  _gc_waste(0),
+  _slow_allocations(0),
+  _allocated_size(0),
+  _allocation_fraction(TLABAllocationWeight) {
+
+  // do nothing. TLABs must be inited by initialize() calls
+}
+
 size_t ThreadLocalAllocBuffer::remaining() {
   if (end() == NULL) {
     return 0;

src/hotspot/share/gc/shared/threadLocalAllocBuffer.hpp

@@ -111,10 +111,7 @@ class ThreadLocalAllocBuffer: public CHeapObj<mtThread> {
   int slow_allocations() const  { return _slow_allocations; }
 
 public:
-  ThreadLocalAllocBuffer() : _allocated_before_last_gc(0), _bytes_since_last_sample_point(0),
-    _allocation_fraction(TLABAllocationWeight) {
-    // do nothing.  tlabs must be inited by initialize() calls
-  }
+  ThreadLocalAllocBuffer();
 
   static size_t min_size()                       { return align_object_size(MinTLABSize / HeapWordSize) + alignment_reserve(); }
   static size_t max_size()                       { assert(_max_size != 0, "max_size not set up"); return _max_size; }