src/share/vm/memory/heap.cpp

rev 13477 : 8166317: InterpreterCodeSize should be computed
Reviewed-by: kvn, coleenp

*** 220,229 ****
--- 220,243 ----
    } else {
      return NULL;
    }
  }
  
+ void CodeHeap::deallocate_tail(void* p, size_t used_size) {
+   assert(p == find_start(p), "illegal deallocation");
+   // Find start of HeapBlock
+   HeapBlock* b = (((HeapBlock *)p) - 1);
+   assert(b->allocated_space() == p, "sanity check");
+   size_t used_number_of_segments = size_to_segments(used_size + header_size());
+   size_t actual_number_of_segments = b->length();
+   guarantee(used_number_of_segments <= actual_number_of_segments, "Must be!");
+   guarantee(b == block_at(_next_segment - actual_number_of_segments), "Intermediate allocation!");
+   size_t number_of_segments_to_deallocate = actual_number_of_segments - used_number_of_segments;
+   _next_segment -= number_of_segments_to_deallocate;
+   mark_segmap_as_free(_next_segment, _next_segment + number_of_segments_to_deallocate);
+   b->initialize(used_number_of_segments);
+ }
  
  void CodeHeap::deallocate(void* p) {
    assert(p == find_start(p), "illegal deallocation");
    // Find start of HeapBlock
    HeapBlock* b = (((HeapBlock *)p) - 1);