src/hotspot/share/runtime/sweeper.cpp

Concurrent class unloading

*** 579,589 ****
   public:
    CompiledMethodMarker(CompiledMethod* cm) {
      JavaThread* current = JavaThread::current();
      assert (current->is_Code_cache_sweeper_thread(), "Must be");
      _thread = (CodeCacheSweeperThread*)current;
!     if (!cm->is_zombie() && !cm->is_unloaded()) {
        // Only expose live nmethods for scanning
        _thread->set_scanned_compiled_method(cm);
      }
    }
    ~CompiledMethodMarker() {
--- 579,589 ----
   public:
    CompiledMethodMarker(CompiledMethod* cm) {
      JavaThread* current = JavaThread::current();
      assert (current->is_Code_cache_sweeper_thread(), "Must be");
      _thread = (CodeCacheSweeperThread*)current;
!     if (!cm->is_zombie() && !cm->is_unloading()) {
        // Only expose live nmethods for scanning
        _thread->set_scanned_compiled_method(cm);
      }
    }
    ~CompiledMethodMarker() {
***************
*** 623,633 ****
    SWEEP(cm);
  
    // Skip methods that are currently referenced by the VM
    if (cm->is_locked_by_vm()) {
      // But still remember to clean-up inline caches for alive nmethods
!     if (cm->is_alive()) {
        // Clean inline caches that point to zombie/non-entrant/unloaded nmethods
        MutexLocker cl(CompiledIC_lock);
        cm->cleanup_inline_caches(false);
        SWEEP(cm);
      }
--- 623,633 ----
    SWEEP(cm);
  
    // Skip methods that are currently referenced by the VM
    if (cm->is_locked_by_vm()) {
      // But still remember to clean-up inline caches for alive nmethods
!     if (cm->is_alive() && !cm->is_unloading()) {
        // Clean inline caches that point to zombie/non-entrant/unloaded nmethods
        MutexLocker cl(CompiledIC_lock);
        cm->cleanup_inline_caches(false);
        SWEEP(cm);
      }