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src/share/vm/gc/g1/g1AllocRegion.cpp

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  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  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 
  25 #include "precompiled.hpp"
  26 #include "gc/g1/g1AllocRegion.inline.hpp"
  27 #include "gc/g1/g1EvacStats.inline.hpp"
  28 #include "gc/g1/g1CollectedHeap.inline.hpp"
  29 #include "memory/resourceArea.hpp"
  30 #include "runtime/orderAccess.inline.hpp"

  31 
  32 G1CollectedHeap* G1AllocRegion::_g1h = NULL;
  33 HeapRegion* G1AllocRegion::_dummy_region = NULL;
  34 
  35 void G1AllocRegion::setup(G1CollectedHeap* g1h, HeapRegion* dummy_region) {
  36   assert(_dummy_region == NULL, "should be set once");
  37   assert(dummy_region != NULL, "pre-condition");
  38   assert(dummy_region->free() == 0, "pre-condition");
  39 
  40   // Make sure that any allocation attempt on this region will fail
  41   // and will not trigger any asserts.
  42   assert(allocate(dummy_region, 1, false) == NULL, "should fail");
  43   assert(par_allocate(dummy_region, 1, false) == NULL, "should fail");
  44   assert(allocate(dummy_region, 1, true) == NULL, "should fail");
  45   assert(par_allocate(dummy_region, 1, true) == NULL, "should fail");
  46 
  47   _g1h = g1h;
  48   _dummy_region = dummy_region;
  49 }
  50 




  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  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 
  25 #include "precompiled.hpp"
  26 #include "gc/g1/g1AllocRegion.inline.hpp"
  27 #include "gc/g1/g1EvacStats.inline.hpp"
  28 #include "gc/g1/g1CollectedHeap.inline.hpp"
  29 #include "memory/resourceArea.hpp"
  30 #include "runtime/orderAccess.inline.hpp"
  31 #include "utilities/align.hpp"
  32 
  33 G1CollectedHeap* G1AllocRegion::_g1h = NULL;
  34 HeapRegion* G1AllocRegion::_dummy_region = NULL;
  35 
  36 void G1AllocRegion::setup(G1CollectedHeap* g1h, HeapRegion* dummy_region) {
  37   assert(_dummy_region == NULL, "should be set once");
  38   assert(dummy_region != NULL, "pre-condition");
  39   assert(dummy_region->free() == 0, "pre-condition");
  40 
  41   // Make sure that any allocation attempt on this region will fail
  42   // and will not trigger any asserts.
  43   assert(allocate(dummy_region, 1, false) == NULL, "should fail");
  44   assert(par_allocate(dummy_region, 1, false) == NULL, "should fail");
  45   assert(allocate(dummy_region, 1, true) == NULL, "should fail");
  46   assert(par_allocate(dummy_region, 1, true) == NULL, "should fail");
  47 
  48   _g1h = g1h;
  49   _dummy_region = dummy_region;
  50 }
  51 


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