12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  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 #ifndef SHARE_GC_Z_ZSAFEDELETE_INLINE_HPP
  25 #define SHARE_GC_Z_ZSAFEDELETE_INLINE_HPP
  26 
  27 #include "gc/z/zArray.inline.hpp"
  28 #include "gc/z/zSafeDelete.hpp"
  29 #include "metaprogramming/isArray.hpp"
  30 #include "utilities/debug.hpp"
  31 
  32 template <typename T>
  33 ZSafeDelete<T>::ZSafeDelete() :
  34     _lock(),
  35     _enabled(0),
  36     _deferred() {}
  37 
  38 template <typename T>
  39 bool ZSafeDelete<T>::deferred_delete(ItemT* item) {
  40   ZLocker<ZLock> locker(&_lock);
  41   if (_enabled > 0) {
  42     _deferred.add(item);
  43     return true;
  44   }
  45 
  46   return false;
  47 }
  48 
  49 template <typename T>
  50 void ZSafeDelete<T>::immediate_delete(ItemT* item) {
  51   if (IsArray<T>::value) {
  52     delete [] item;
  53   } else {
  54     delete item;
  55   }
  56 }
  57 
  58 template <typename T>
  59 void ZSafeDelete<T>::enable_deferred_delete() {
  60   ZLocker<ZLock> locker(&_lock);
  61   _enabled++;
  62 }
  63 
  64 template <typename T>
  65 void ZSafeDelete<T>::disable_deferred_delete() {
  66   ZArray<ItemT*> deferred;
  67 
  68   {
  69     ZLocker<ZLock> locker(&_lock);
  70     assert(_enabled > 0, "Invalid state");
  71     if (--_enabled == 0) {
  72       deferred.transfer(&_deferred);
  73     }
  74   }
  75 
  76   ZArrayIterator<ItemT*> iter(&deferred);
  77   for (ItemT* item; iter.next(&item);) {
  78     immediate_delete(item);
  79   }
  80 }
  81 
  82 template <typename T>
  83 void ZSafeDelete<T>::operator()(ItemT* item) {
  84   if (!deferred_delete(item)) {
  85     immediate_delete(item);
  86   }
  87 }
  88 
  89 #endif // SHARE_GC_Z_ZSAFEDELETE_INLINE_HPP

  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  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 #ifndef SHARE_GC_Z_ZSAFEDELETE_INLINE_HPP
  25 #define SHARE_GC_Z_ZSAFEDELETE_INLINE_HPP
  26 
  27 #include "gc/z/zArray.inline.hpp"
  28 #include "gc/z/zSafeDelete.hpp"
  29 #include "metaprogramming/isArray.hpp"
  30 #include "utilities/debug.hpp"
  31 
  32 template <typename LockT, typename T>
  33 ZSafeDeleteImpl<LockT, T>::ZSafeDeleteImpl() :
  34     _lock(),
  35     _enabled(0),
  36     _deferred() {}
  37 
  38 template <typename LockT, typename T>
  39 bool ZSafeDeleteImpl<LockT, T>::deferred_delete(ItemT* item) {
  40   ZLocker<LockT> locker(&_lock);
  41   if (_enabled > 0) {
  42     _deferred.add(item);
  43     return true;
  44   }
  45 
  46   return false;
  47 }
  48 
  49 template <typename LockT, typename T>
  50 void ZSafeDeleteImpl<LockT, T>::immediate_delete(ItemT* item) {
  51   if (IsArray<T>::value) {
  52     delete [] item;
  53   } else {
  54     delete item;
  55   }
  56 }
  57 
  58 template <typename LockT, typename T>
  59 void ZSafeDeleteImpl<LockT, T>::enable_deferred_delete() {
  60   ZLocker<LockT> locker(&_lock);
  61   _enabled++;
  62 }
  63 
  64 template <typename LockT, typename T>
  65 void ZSafeDeleteImpl<LockT, T>::disable_deferred_delete() {
  66   ZArray<ItemT*> deferred;
  67 
  68   {
  69     ZLocker<LockT> locker(&_lock);
  70     assert(_enabled > 0, "Invalid state");
  71     if (--_enabled == 0) {
  72       deferred.transfer(&_deferred);
  73     }
  74   }
  75 
  76   ZArrayIterator<ItemT*> iter(&deferred);
  77   for (ItemT* item; iter.next(&item);) {
  78     immediate_delete(item);
  79   }
  80 }
  81 
  82 template <typename LockT, typename T>
  83 void ZSafeDeleteImpl<LockT, T>::operator()(ItemT* item) {
  84   if (!deferred_delete(item)) {
  85     immediate_delete(item);
  86   }
  87 }
  88 
  89 #endif // SHARE_GC_Z_ZSAFEDELETE_INLINE_HPP