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annotate src/share/vm/runtime/handles.inline.hpp @ 13212:eb03a7335eb0

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Use fixed instead of virtual register for target in far foreign call, since the register allocator does not support virtual registers to be used at call sites.
author Christian Wimmer <christian.wimmer@oracle.com>
date Mon, 02 Dec 2013 14:20:32 -0800
parents 4f9a42c33738
children de6a9e811145
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1 /*
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2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
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26 #define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
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27
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28 #include "runtime/handles.hpp"
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29 #include "runtime/thread.inline.hpp"
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30
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31 // these inline functions are in a separate file to break an include cycle
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32 // between Thread and Handle
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33
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34 inline Handle::Handle(oop obj) {
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35 if (obj == NULL) {
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36 _handle = NULL;
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37 } else {
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38 _handle = Thread::current()->handle_area()->allocate_handle(obj);
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39 }
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40 }
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41
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42
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43 #ifndef ASSERT
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44 inline Handle::Handle(Thread* thread, oop obj) {
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45 assert(thread == Thread::current(), "sanity check");
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46 if (obj == NULL) {
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47 _handle = NULL;
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48 } else {
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49 _handle = thread->handle_area()->allocate_handle(obj);
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50 }
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51 }
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52 #endif // ASSERT
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53
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54 // Constructors for metadata handles
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55 #define DEF_METADATA_HANDLE_FN(name, type) \
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56 inline name##Handle::name##Handle(type* obj) : _value(obj), _thread(NULL) { \
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57 if (obj != NULL) { \
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58 assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
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59 _thread = Thread::current(); \
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60 assert (_thread->is_in_stack((address)this), "not on stack?"); \
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61 _thread->metadata_handles()->push((Metadata*)obj); \
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62 } \
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63 } \
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64 inline name##Handle::name##Handle(Thread* thread, type* obj) : _value(obj), _thread(thread) { \
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65 if (obj != NULL) { \
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66 assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
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67 assert(_thread == Thread::current(), "thread must be current"); \
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68 assert (_thread->is_in_stack((address)this), "not on stack?"); \
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69 _thread->metadata_handles()->push((Metadata*)obj); \
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70 } \
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71 } \
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72 inline name##Handle::name##Handle(const name##Handle &h) { \
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73 _value = h._value; \
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74 if (_value != NULL) { \
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75 assert(_value->is_valid(), "obj is valid"); \
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76 if (h._thread != NULL) { \
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77 assert(h._thread == Thread::current(), "thread must be current");\
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78 _thread = h._thread; \
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79 } else { \
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80 _thread = Thread::current(); \
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81 } \
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82 assert (_thread->is_in_stack((address)this), "not on stack?"); \
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83 _thread->metadata_handles()->push((Metadata*)_value); \
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84 } else { \
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85 _thread = NULL; \
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86 } \
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87 } \
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88 inline name##Handle& name##Handle::operator=(const name##Handle &s) { \
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89 remove(); \
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90 _value = s._value; \
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91 if (_value != NULL) { \
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92 assert(_value->is_valid(), "obj is valid"); \
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93 if (s._thread != NULL) { \
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94 assert(s._thread == Thread::current(), "thread must be current");\
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95 _thread = s._thread; \
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96 } else { \
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97 _thread = Thread::current(); \
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98 } \
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99 assert (_thread->is_in_stack((address)this), "not on stack?"); \
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100 _thread->metadata_handles()->push((Metadata*)_value); \
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101 } else { \
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102 _thread = NULL; \
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103 } \
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104 return *this; \
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105 } \
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106 inline void name##Handle::remove() { \
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107 if (_value != NULL) { \
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108 int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \
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109 assert(i!=-1, "not in metadata_handles list"); \
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110 _thread->metadata_handles()->remove_at(i); \
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111 } \
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112 } \
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113 inline name##Handle::~name##Handle () { remove(); } \
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114
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115 DEF_METADATA_HANDLE_FN(method, Method)
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116 DEF_METADATA_HANDLE_FN(constantPool, ConstantPool)
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117
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118 inline HandleMark::HandleMark() {
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119 initialize(Thread::current());
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120 }
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121
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122
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123 inline void HandleMark::push() {
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124 // This is intentionally a NOP. pop_and_restore will reset
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125 // values to the HandleMark further down the stack, typically
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126 // in JavaCalls::call_helper.
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127 debug_only(_area->_handle_mark_nesting++);
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128 }
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129
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130 inline void HandleMark::pop_and_restore() {
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131 HandleArea* area = _area; // help compilers with poor alias analysis
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132 // Delete later chunks
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133 if( _chunk->next() ) {
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134 // reset arena size before delete chunks. Otherwise, the total
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135 // arena size could exceed total chunk size
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136 assert(area->size_in_bytes() > size_in_bytes(), "Sanity check");
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137 area->set_size_in_bytes(size_in_bytes());
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138 _chunk->next_chop();
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139 } else {
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140 assert(area->size_in_bytes() == size_in_bytes(), "Sanity check");
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141 }
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142 // Roll back arena to saved top markers
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143 area->_chunk = _chunk;
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144 area->_hwm = _hwm;
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145 area->_max = _max;
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146 debug_only(area->_handle_mark_nesting--);
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147 }
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148
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149 #endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP