79   CodeCache::gc_prologue();
  80 
  81   // Increment the invocation count
  82   _total_invocations++;
  83 
  84   // Capture heap size before collection for printing.
  85   size_t gch_prev_used = gch->used();
  86 
  87   // Capture used regions for each generation that will be
  88   // subject to collection, so that card table adjustments can
  89   // be made intelligently (see clear / invalidate further below).
  90   gch->save_used_regions();
  91 
  92   allocate_stacks();
  93 
  94   mark_sweep_phase1(clear_all_softrefs);
  95 
  96   mark_sweep_phase2();
  97 
  98   // Don't add any more derived pointers during phase3
  99   COMPILER2_PRESENT(assert(DerivedPointerTable::is_active(), "Sanity"));
 100   COMPILER2_PRESENT(DerivedPointerTable::set_active(false));


 101 
 102   mark_sweep_phase3();
 103 
 104   mark_sweep_phase4();
 105 
 106   restore_marks();
 107 
 108   // Set saved marks for allocation profiler (and other things? -- dld)
 109   // (Should this be in general part?)
 110   gch->save_marks();
 111 
 112   deallocate_stacks();
 113 
 114   // If compaction completely evacuated the young generation then we
 115   // can clear the card table.  Otherwise, we must invalidate
 116   // it (consider all cards dirty).  In the future, we might consider doing
 117   // compaction within generations only, and doing card-table sliding.
 118   GenRemSet* rs = gch->rem_set();
 119   Generation* old_gen = gch->old_gen();
 120 

  79   CodeCache::gc_prologue();
  80 
  81   // Increment the invocation count
  82   _total_invocations++;
  83 
  84   // Capture heap size before collection for printing.
  85   size_t gch_prev_used = gch->used();
  86 
  87   // Capture used regions for each generation that will be
  88   // subject to collection, so that card table adjustments can
  89   // be made intelligently (see clear / invalidate further below).
  90   gch->save_used_regions();
  91 
  92   allocate_stacks();
  93 
  94   mark_sweep_phase1(clear_all_softrefs);
  95 
  96   mark_sweep_phase2();
  97 
  98   // Don't add any more derived pointers during phase3
  99 #if defined(COMPILER2) || INCLUDE_JVMCI
 100   assert(DerivedPointerTable::is_active(), "Sanity");
 101   DerivedPointerTable::set_active(false);
 102 #endif
 103 
 104   mark_sweep_phase3();
 105 
 106   mark_sweep_phase4();
 107 
 108   restore_marks();
 109 
 110   // Set saved marks for allocation profiler (and other things? -- dld)
 111   // (Should this be in general part?)
 112   gch->save_marks();
 113 
 114   deallocate_stacks();
 115 
 116   // If compaction completely evacuated the young generation then we
 117   // can clear the card table.  Otherwise, we must invalidate
 118   // it (consider all cards dirty).  In the future, we might consider doing
 119   // compaction within generations only, and doing card-table sliding.
 120   GenRemSet* rs = gch->rem_set();
 121   Generation* old_gen = gch->old_gen();
 122