OCC22144 NIS performance and memory usage update

[occt.git] / src / NIS / NIS_Allocator.cxx

diff --git a/src/NIS/NIS_Allocator.cxx b/src/NIS/NIS_Allocator.cxx
new file mode 100644 (file)
index 0000000..0f7cb0c
--- /dev/null
+++ b/src/NIS/NIS_Allocator.cxx
@@ -0,0 +1,59 @@
+// File:      NIS_Allocator.cpp
+// Created:   22.10.10 17:35
+// Author:    Alexander GRIGORIEV
+// Copyright: Open Cascade 2010
+
+#include <NIS_Allocator.hxx>
+
+IMPLEMENT_STANDARD_HANDLE  (NIS_Allocator, NCollection_IncAllocator)
+IMPLEMENT_STANDARD_RTTIEXT (NIS_Allocator, NCollection_IncAllocator)
+
+//=======================================================================
+//function : NIS_Allocator
+//purpose  : 
+//=======================================================================
+
+NIS_Allocator::NIS_Allocator (const size_t theBlockSize)
+  : NCollection_IncAllocator  (theBlockSize),
+    myNAllocated              (0),
+    myNFreed                  (0)
+{}
+
+//=======================================================================
+//function : ResetCounters
+//purpose  : 
+//=======================================================================
+
+void NIS_Allocator::ResetCounters ()
+{
+  myNAllocated = 0;
+  myNFreed = 0;
+}
+
+//=======================================================================
+//function : Allocate
+//purpose  : 
+//=======================================================================
+
+void* NIS_Allocator::Allocate (const size_t size)
+{
+  size_t* pResult = reinterpret_cast<size_t*>
+    (NCollection_IncAllocator::Allocate(size + sizeof(size_t)));
+  pResult[0] = size;
+  myNAllocated += size;
+  return &pResult[1];
+}
+
+//=======================================================================
+//function : Free
+//purpose  : 
+//=======================================================================
+
+void NIS_Allocator::Free (void *anAddress)
+{
+  if (anAddress) {
+    size_t* pAddress = reinterpret_cast<size_t*>(anAddress) - 1;
+    myNFreed += pAddress[0];
+    NCollection_IncAllocator::Free(pAddress);
+  }
+}