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src/share/vm/runtime/handles.inline.hpp@a7509aff1b06
src/share/vm/runtime/handles.inline.hpp
Mon, 17 Sep 2012 07:36:31 -0400
- author
- dholmes
- date
- Mon, 17 Sep 2012 07:36:31 -0400
- changeset 4077
- a7509aff1b06
- parent 4037
- da91efe96a93
- child 4193
- 716c64bda5ba
- permissions
- -rw-r--r--
7194254: jstack reports wrong thread priorities
Reviewed-by: dholmes, sla, fparain
Contributed-by: Dmytro Sheyko <dmytro_sheyko@hotmail.com>
1 /*
2 * Copyright (c) 1998, 2012, 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 */
25 #ifndef SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
26 #define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
28 #include "runtime/handles.hpp"
29 #ifdef TARGET_OS_FAMILY_linux
30 # include "thread_linux.inline.hpp"
31 #endif
32 #ifdef TARGET_OS_FAMILY_solaris
33 # include "thread_solaris.inline.hpp"
34 #endif
35 #ifdef TARGET_OS_FAMILY_windows
36 # include "thread_windows.inline.hpp"
37 #endif
38 #ifdef TARGET_OS_FAMILY_bsd
39 # include "thread_bsd.inline.hpp"
40 #endif
42 // these inline functions are in a separate file to break an include cycle
43 // between Thread and Handle
45 inline Handle::Handle(oop obj) {
46 if (obj == NULL) {
47 _handle = NULL;
48 } else {
49 _handle = Thread::current()->handle_area()->allocate_handle(obj);
50 }
51 }
54 #ifndef ASSERT
55 inline Handle::Handle(Thread* thread, oop obj) {
56 assert(thread == Thread::current(), "sanity check");
57 if (obj == NULL) {
58 _handle = NULL;
59 } else {
60 _handle = thread->handle_area()->allocate_handle(obj);
61 }
62 }
63 #endif // ASSERT
65 // Constructors for metadata handles
66 #define DEF_METADATA_HANDLE_FN(name, type) \
67 inline name##Handle::name##Handle(type* obj) : _value(obj), _thread(NULL) { \
68 if (obj != NULL) { \
69 assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
70 _thread = Thread::current(); \
71 assert (_thread->is_in_stack((address)this), "not on stack?"); \
72 _thread->metadata_handles()->push((Metadata*)obj); \
73 } \
74 } \
75 inline name##Handle::name##Handle(Thread* thread, type* obj) : _value(obj), _thread(thread) { \
76 if (obj != NULL) { \
77 assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
78 assert(_thread == Thread::current(), "thread must be current"); \
79 assert (_thread->is_in_stack((address)this), "not on stack?"); \
80 _thread->metadata_handles()->push((Metadata*)obj); \
81 } \
82 } \
83 inline name##Handle::name##Handle(const name##Handle &h) { \
84 _value = h._value; \
85 if (_value != NULL) { \
86 assert(_value->is_valid(), "obj is valid"); \
87 if (h._thread != NULL) { \
88 assert(h._thread == Thread::current(), "thread must be current");\
89 _thread = h._thread; \
90 } else { \
91 _thread = Thread::current(); \
92 } \
93 _thread->metadata_handles()->push((Metadata*)_value); \
94 } \
95 } \
96 inline name##Handle& name##Handle::operator=(const name##Handle &s) { \
97 remove(); \
98 _value = s._value; \
99 if (_value != NULL) { \
100 assert(_value->is_valid(), "obj is valid"); \
101 if (s._thread != NULL) { \
102 assert(s._thread == Thread::current(), "thread must be current");\
103 _thread = s._thread; \
104 } else { \
105 _thread = Thread::current(); \
106 } \
107 _thread->metadata_handles()->push((Metadata*)_value); \
108 } \
109 return *this; \
110 } \
111 inline void name##Handle::remove() { \
112 if (_value != NULL) { \
113 int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \
114 assert(i!=-1, "not in metadata_handles list"); \
115 _thread->metadata_handles()->remove_at(i); \
116 } \
117 } \
118 inline name##Handle::~name##Handle () { remove(); } \
120 DEF_METADATA_HANDLE_FN(method, Method)
121 DEF_METADATA_HANDLE_FN(constantPool, ConstantPool)
123 inline HandleMark::HandleMark() {
124 initialize(Thread::current());
125 }
128 inline void HandleMark::push() {
129 // This is intentionally a NOP. pop_and_restore will reset
130 // values to the HandleMark further down the stack, typically
131 // in JavaCalls::call_helper.
132 debug_only(_area->_handle_mark_nesting++);
133 }
135 inline void HandleMark::pop_and_restore() {
136 HandleArea* area = _area; // help compilers with poor alias analysis
137 // Delete later chunks
138 if( _chunk->next() ) {
139 _chunk->next_chop();
140 }
141 // Roll back arena to saved top markers
142 area->_chunk = _chunk;
143 area->_hwm = _hwm;
144 area->_max = _max;
145 area->set_size_in_bytes(_size_in_bytes);
146 debug_only(area->_handle_mark_nesting--);
147 }
149 #endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
