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src/hotspot/share/gc/shared/barrierSet.cpp

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 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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/shared/barrierSet.hpp"
27 #include "gc/shared/barrierSetAssembler.hpp"


28 #include "runtime/thread.hpp"
29 #include "utilities/debug.hpp"
30 #include "utilities/macros.hpp"
31 
32 BarrierSet* BarrierSet::_barrier_set = NULL;
33 
34 void BarrierSet::set_barrier_set(BarrierSet* barrier_set) {
35   assert(_barrier_set == NULL, "Already initialized");
36   _barrier_set = barrier_set;
37 
38   // Notify barrier set of the current (main) thread.  Normally the
39   // Thread constructor deals with this, but the main thread is
40   // created before we get here.  Verify it isn't yet on the thread
41   // list, else we'd also need to call BarrierSet::on_thread_attach.
42   // This is the only thread that can exist at this point; the Thread
43   // constructor objects to other threads being created before the
44   // barrier set is available.
45   assert(Thread::current()->is_Java_thread(),
46          "Expected main thread to be a JavaThread");
47   assert(!JavaThread::current()->on_thread_list(),
48          "Main thread already on thread list.");
49   _barrier_set->on_thread_create(Thread::current());
50 }
51 


























52 // Called from init.cpp
53 void gc_barrier_stubs_init() {
54   BarrierSet* bs = BarrierSet::barrier_set();
55 #ifndef ZERO
56   BarrierSetAssembler* bs_assembler = bs->barrier_set_assembler();
57   bs_assembler->barrier_stubs_init();
58 #endif
59 }

 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 "classfile/vmSymbols.hpp"
27 #include "gc/shared/barrierSet.hpp"
28 #include "gc/shared/barrierSetAssembler.hpp"
29 #include "memory/resourceArea.hpp"
30 #include "oops/objArrayKlass.inline.hpp"
31 #include "runtime/thread.hpp"
32 #include "utilities/debug.hpp"
33 #include "utilities/macros.hpp"
34 
35 BarrierSet* BarrierSet::_barrier_set = NULL;
36 
37 void BarrierSet::set_barrier_set(BarrierSet* barrier_set) {
38   assert(_barrier_set == NULL, "Already initialized");
39   _barrier_set = barrier_set;
40 
41   // Notify barrier set of the current (main) thread.  Normally the
42   // Thread constructor deals with this, but the main thread is
43   // created before we get here.  Verify it isn't yet on the thread
44   // list, else we'd also need to call BarrierSet::on_thread_attach.
45   // This is the only thread that can exist at this point; the Thread
46   // constructor objects to other threads being created before the
47   // barrier set is available.
48   assert(Thread::current()->is_Java_thread(),
49          "Expected main thread to be a JavaThread");
50   assert(!JavaThread::current()->on_thread_list(),
51          "Main thread already on thread list.");
52   _barrier_set->on_thread_create(Thread::current());
53 }
54 
55 void BarrierSet::throw_array_null_pointer_store_exception(arrayOop src, arrayOop dst, TRAPS) {
56   Klass* bound = ObjArrayKlass::cast(dst->klass())->element_klass();
57   stringStream ss;
58   ss.print("arraycopy: can not copy null values into %s[]",
59            bound->external_name());
60   THROW_MSG(vmSymbols::java_lang_NullPointerException(), ss.as_string());
61 }
62 
63 void BarrierSet::throw_array_store_exception(arrayOop src, arrayOop dst, TRAPS) {
64   ResourceMark rm(THREAD);
65   Klass* bound = ObjArrayKlass::cast(dst->klass())->element_klass();
66   Klass* stype = ObjArrayKlass::cast(src->klass())->element_klass();
67   stringStream ss;
68   if (!bound->is_subtype_of(stype)) {
69     ss.print("arraycopy: type mismatch: can not copy %s[] into %s[]",
70              stype->external_name(), bound->external_name());
71   } else {
72     // oop_arraycopy should return the index in the source array that
73     // contains the problematic oop.
74     ss.print("arraycopy: element type mismatch: can not cast one of the elements"
75              " of %s[] to the type of the destination array, %s",
76              stype->external_name(), bound->external_name());
77   }
78   THROW_MSG(vmSymbols::java_lang_ArrayStoreException(), ss.as_string());
79 }
80 
81 // Called from init.cpp
82 void gc_barrier_stubs_init() {
83   BarrierSet* bs = BarrierSet::barrier_set();
84 #ifndef ZERO
85   BarrierSetAssembler* bs_assembler = bs->barrier_set_assembler();
86   bs_assembler->barrier_stubs_init();
87 #endif
88 }
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