src/share/vm/code/codeCache.cpp

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

*** 567,576 ****
--- 567,591 ----
    get_code_heap(cb)->deallocate(cb);
  
    assert(heap->blob_count() >= 0, "sanity check");
  }
  
+ void CodeCache::free_unused_tail(CodeBlob* cb, size_t used) {
+   assert_locked_or_safepoint(CodeCache_lock);
+   guarantee(cb->is_buffer_blob() && strncmp("Interpreter", cb->name(), 11) == 0, "Only possible for interpreter!");
+   print_trace("free_unused_tail", cb);
+ 
+   // We also have to account for the extra space (i.e. header) used by the CodeBlob
+   // which provides the memory (see BufferBlob::create() in codeBlob.cpp).
+   used += CodeBlob::align_code_offset(cb->header_size());
+ 
+   // Get heap for given CodeBlob and deallocate its unused tail
+   get_code_heap(cb)->deallocate_tail(cb, used);
+   // Adjust the sizes of the CodeBlob
+   cb->adjust_size(used);
+ }
+ 
  void CodeCache::commit(CodeBlob* cb) {
    // this is called by nmethod::nmethod, which must already own CodeCache_lock
    assert_locked_or_safepoint(CodeCache_lock);
    CodeHeap* heap = get_code_heap(cb);
    if (cb->is_nmethod()) {