src/share/vm/code/stubs.cpp

rev 13455 : 8166317: InterpreterCodeSize should be computed
Reviewed-by: kvn

*** 22,31 ****
--- 22,32 ----
   *
   */
  
  #include "precompiled.hpp"
  #include "code/codeBlob.hpp"
+ #include "code/codeCache.hpp"
  #include "code/stubs.hpp"
  #include "memory/allocation.inline.hpp"
  #include "oops/oop.inline.hpp"
  #include "runtime/mutexLocker.hpp"
  #include "utilities/align.hpp"
*** 87,96 ****
--- 88,107 ----
    //       allocated in the constructor (i.e., we need to keep it around or look it
    //       up via CodeCache::find_blob(...).
    Unimplemented();
  }
  
+ void StubQueue::deallocate_unused_tail() {
+   CodeBlob* blob = CodeCache::find_blob((void*)_stub_buffer);
+   // We also have to account for the extra space (i.e. header) used by the CodeBlob
+   // which provides our memory (see BufferBlob::create() in codeBlob.cpp).
+   size_t header_size = CodeBlob::align_code_offset(blob->header_size());
+   CodeCache::free_unused_tail(blob, header_size + used_space());
+   // Update the limits to the new, trimmed CodeBlob size
+   _buffer_size = blob->content_size();
+   _buffer_limit = blob->content_size();
+ }
  
  Stub* StubQueue::stub_containing(address pc) const {
    if (contains(pc)) {
      for (Stub* s = first(); s != NULL; s = next(s)) {
        if (stub_contains(s, pc)) return s;