19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_GC_SHARED_ISGCACTIVEMARK_HPP
  26 #define SHARE_VM_GC_SHARED_ISGCACTIVEMARK_HPP
  27 
  28 #include "gc/shared/collectedHeap.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "memory/universe.hpp"
  31 #include "utilities/debug.hpp"
  32 
  33 // This class provides a method for block structured setting of the
  34 // _is_gc_active state without requiring accessors in CollectedHeap
  35 
  36 class IsGCActiveMark : public StackObj {
  37  public:
  38   IsGCActiveMark() {
  39     CollectedHeap* heap = Universe::heap();
  40     assert(!heap->is_gc_active(), "Not reentrant");
  41     heap->_is_gc_active = true;
  42   }
  43 
  44   ~IsGCActiveMark() {
  45     CollectedHeap* heap = Universe::heap();
  46     assert(heap->is_gc_active(), "Sanity");
  47     heap->_is_gc_active = false;
  48   }
  49 };
  50 
  51 #endif // SHARE_VM_GC_SHARED_ISGCACTIVEMARK_HPP

  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_GC_SHARED_ISGCACTIVEMARK_HPP
  26 #define SHARE_VM_GC_SHARED_ISGCACTIVEMARK_HPP
  27 
  28 #include "gc/shared/collectedHeap.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "memory/universe.hpp"
  31 #include "utilities/debug.hpp"
  32 
  33 // This class provides a method for block structured setting of the
  34 // _is_gc_active state without requiring accessors in CollectedHeap
  35 
  36 class IsGCActiveMark : public StackObj {
  37  public:
  38   IsGCActiveMark() {
  39     CollectedHeap* heap = GC::gc()->heap();
  40     assert(!heap->is_gc_active(), "Not reentrant");
  41     heap->_is_gc_active = true;
  42   }
  43 
  44   ~IsGCActiveMark() {
  45     CollectedHeap* heap = GC::gc()->heap();
  46     assert(heap->is_gc_active(), "Sanity");
  47     heap->_is_gc_active = false;
  48   }
  49 };
  50 
  51 #endif // SHARE_VM_GC_SHARED_ISGCACTIVEMARK_HPP