1 /*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
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/metadataOnStackMark.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "code/debugInfoRec.hpp"
29 #include "gc_interface/collectedHeap.inline.hpp"
30 #include "interpreter/bytecodeStream.hpp"
31 #include "interpreter/bytecodeTracer.hpp"
32 #include "interpreter/bytecodes.hpp"
33 #include "interpreter/interpreter.hpp"
34 #include "interpreter/oopMapCache.hpp"
35 #include "memory/gcLocker.hpp"
36 #include "memory/generation.hpp"
37 #include "memory/heapInspection.hpp"
38 #include "memory/metadataFactory.hpp"
39 #include "memory/oopFactory.hpp"
40 #include "oops/constMethod.hpp"
41 #include "oops/methodData.hpp"
42 #include "oops/method.hpp"
43 #include "oops/oop.inline.hpp"
44 #include "oops/symbol.hpp"
45 #include "prims/jvmtiExport.hpp"
46 #include "prims/methodHandles.hpp"
47 #include "prims/nativeLookup.hpp"
1710 _next = NULL;
1711 }
1712
1713 void BreakpointInfo::set(Method* method) {
1714 #ifdef ASSERT
1715 {
1716 Bytecodes::Code code = (Bytecodes::Code) *method->bcp_from(_bci);
1717 if (code == Bytecodes::_breakpoint)
1718 code = method->orig_bytecode_at(_bci);
1719 assert(orig_bytecode() == code, "original bytecode must be the same");
1720 }
1721 #endif
1722 Thread *thread = Thread::current();
1723 *method->bcp_from(_bci) = Bytecodes::_breakpoint;
1724 method->incr_number_of_breakpoints(thread);
1725 SystemDictionary::notice_modification();
1726 {
1727 // Deoptimize all dependents on this method
1728 HandleMark hm(thread);
1729 methodHandle mh(thread, method);
1730 Universe::flush_dependents_on_method(mh);
1731 }
1732 }
1733
1734 void BreakpointInfo::clear(Method* method) {
1735 *method->bcp_from(_bci) = orig_bytecode();
1736 assert(method->number_of_breakpoints() > 0, "must not go negative");
1737 method->decr_number_of_breakpoints(Thread::current());
1738 }
1739
1740 // jmethodID handling
1741
1742 // This is a block allocating object, sort of like JNIHandleBlock, only a
1743 // lot simpler.
1744 // It's allocated on the CHeap because once we allocate a jmethodID, we can
1745 // never get rid of it.
1746
1747 static const int min_block_size = 8;
1748
1749 class JNIMethodBlockNode : public CHeapObj<mtClass> {
1750 friend class JNIMethodBlock;
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1 /*
2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
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/metadataOnStackMark.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "code/codeCache.hpp"
29 #include "code/debugInfoRec.hpp"
30 #include "gc_interface/collectedHeap.inline.hpp"
31 #include "interpreter/bytecodeStream.hpp"
32 #include "interpreter/bytecodeTracer.hpp"
33 #include "interpreter/bytecodes.hpp"
34 #include "interpreter/interpreter.hpp"
35 #include "interpreter/oopMapCache.hpp"
36 #include "memory/gcLocker.hpp"
37 #include "memory/generation.hpp"
38 #include "memory/heapInspection.hpp"
39 #include "memory/metadataFactory.hpp"
40 #include "memory/oopFactory.hpp"
41 #include "oops/constMethod.hpp"
42 #include "oops/methodData.hpp"
43 #include "oops/method.hpp"
44 #include "oops/oop.inline.hpp"
45 #include "oops/symbol.hpp"
46 #include "prims/jvmtiExport.hpp"
47 #include "prims/methodHandles.hpp"
48 #include "prims/nativeLookup.hpp"
1711 _next = NULL;
1712 }
1713
1714 void BreakpointInfo::set(Method* method) {
1715 #ifdef ASSERT
1716 {
1717 Bytecodes::Code code = (Bytecodes::Code) *method->bcp_from(_bci);
1718 if (code == Bytecodes::_breakpoint)
1719 code = method->orig_bytecode_at(_bci);
1720 assert(orig_bytecode() == code, "original bytecode must be the same");
1721 }
1722 #endif
1723 Thread *thread = Thread::current();
1724 *method->bcp_from(_bci) = Bytecodes::_breakpoint;
1725 method->incr_number_of_breakpoints(thread);
1726 SystemDictionary::notice_modification();
1727 {
1728 // Deoptimize all dependents on this method
1729 HandleMark hm(thread);
1730 methodHandle mh(thread, method);
1731 CodeCache::flush_dependents_on_method(mh);
1732 }
1733 }
1734
1735 void BreakpointInfo::clear(Method* method) {
1736 *method->bcp_from(_bci) = orig_bytecode();
1737 assert(method->number_of_breakpoints() > 0, "must not go negative");
1738 method->decr_number_of_breakpoints(Thread::current());
1739 }
1740
1741 // jmethodID handling
1742
1743 // This is a block allocating object, sort of like JNIHandleBlock, only a
1744 // lot simpler.
1745 // It's allocated on the CHeap because once we allocate a jmethodID, we can
1746 // never get rid of it.
1747
1748 static const int min_block_size = 8;
1749
1750 class JNIMethodBlockNode : public CHeapObj<mtClass> {
1751 friend class JNIMethodBlock;
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