Mercurial > hg > truffle
annotate src/cpu/x86/vm/compiledIC_x86.cpp @ 21139:a17dc2584e81
Fix time reporting in multithreaded CTW
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Tue, 28 Apr 2015 09:44:23 -0700 |
parents | 7848fc12602b |
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1 /* |
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2 * Copyright (c) 1997, 2014, 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 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.inline.hpp" |
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27 #include "code/compiledIC.hpp" |
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28 #include "code/icBuffer.hpp" |
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29 #include "code/nmethod.hpp" |
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30 #include "memory/resourceArea.hpp" |
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31 #include "runtime/mutexLocker.hpp" |
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32 #include "runtime/safepoint.hpp" |
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33 |
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34 // Release the CompiledICHolder* associated with this call site is there is one. |
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35 void CompiledIC::cleanup_call_site(virtual_call_Relocation* call_site) { |
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36 // This call site might have become stale so inspect it carefully. |
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37 NativeCall* call = nativeCall_at(call_site->addr()); |
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38 if (is_icholder_entry(call->destination())) { |
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39 NativeMovConstReg* value = nativeMovConstReg_at(call_site->cached_value()); |
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40 InlineCacheBuffer::queue_for_release((CompiledICHolder*)value->data()); |
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41 } |
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42 } |
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43 |
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44 bool CompiledIC::is_icholder_call_site(virtual_call_Relocation* call_site) { |
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45 // This call site might have become stale so inspect it carefully. |
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46 NativeCall* call = nativeCall_at(call_site->addr()); |
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47 return is_icholder_entry(call->destination()); |
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48 } |
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49 |
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50 // ---------------------------------------------------------------------------- |
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51 |
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52 #define __ _masm. |
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53 void CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf, address mark) { |
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54 // Stub is fixed up when the corresponding call is converted from |
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55 // calling compiled code to calling interpreted code. |
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56 // movq rbx, 0 |
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57 // jmp -5 # to self |
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58 |
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59 if (mark == NULL) { |
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60 mark = cbuf.insts_mark(); // Get mark within main instrs section. |
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61 } |
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62 |
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63 // Note that the code buffer's insts_mark is always relative to insts. |
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64 // That's why we must use the macroassembler to generate a stub. |
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65 MacroAssembler _masm(&cbuf); |
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66 |
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67 address base = |
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68 __ start_a_stub(to_interp_stub_size()); |
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69 guarantee(base != NULL, "out of space"); |
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70 |
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71 // Static stub relocation stores the instruction address of the call. |
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72 __ relocate(static_stub_Relocation::spec(mark), Assembler::imm_operand); |
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73 // Static stub relocation also tags the Method* in the code-stream. |
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74 __ mov_metadata(rbx, (Metadata*) NULL); // Method is zapped till fixup time. |
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75 // This is recognized as unresolved by relocs/nativeinst/ic code. |
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76 __ jump(RuntimeAddress(__ pc())); |
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77 |
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78 assert(__ pc() - base <= to_interp_stub_size(), "wrong stub size"); |
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79 |
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80 // Update current stubs pointer and restore insts_end. |
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81 __ end_a_stub(); |
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82 } |
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83 #undef __ |
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84 |
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85 int CompiledStaticCall::to_interp_stub_size() { |
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86 return NOT_LP64(10) // movl; jmp |
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87 LP64_ONLY(15); // movq (1+1+8); jmp (1+4) |
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88 } |
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89 |
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90 // Relocation entries for call stub, compiled java to interpreter. |
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91 int CompiledStaticCall::reloc_to_interp_stub() { |
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92 return 4; // 3 in emit_to_interp_stub + 1 in emit_call |
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93 } |
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94 |
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95 void CompiledStaticCall::set_to_interpreted(methodHandle callee, address entry) { |
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96 address stub = find_stub(); |
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97 guarantee(stub != NULL, "stub not found"); |
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98 |
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99 if (TraceICs) { |
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100 ResourceMark rm; |
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101 tty->print_cr("CompiledStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s", |
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102 p2i(instruction_address()), |
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103 callee->name_and_sig_as_C_string()); |
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104 } |
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105 |
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106 // Creation also verifies the object. |
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107 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub); |
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108 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address()); |
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109 |
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110 #ifdef ASSERT |
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111 // read the value once |
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112 intptr_t data = method_holder->data(); |
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113 address destination = jump->jump_destination(); |
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114 assert(data == 0 || data == (intptr_t)callee(), |
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115 "a) MT-unsafe modification of inline cache"); |
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116 assert(destination == (address)-1 || destination == entry, |
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117 "b) MT-unsafe modification of inline cache"); |
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118 #endif |
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119 |
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120 // Update stub. |
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121 method_holder->set_data((intptr_t)callee()); |
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122 jump->set_jump_destination(entry); |
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123 |
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124 // Update jump to call. |
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125 set_destination_mt_safe(stub); |
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126 } |
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127 |
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128 void CompiledStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) { |
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129 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call"); |
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130 // Reset stub. |
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131 address stub = static_stub->addr(); |
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132 assert(stub != NULL, "stub not found"); |
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133 // Creation also verifies the object. |
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134 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub); |
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135 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address()); |
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136 method_holder->set_data(0); |
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137 jump->set_jump_destination((address)-1); |
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138 } |
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139 |
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140 //----------------------------------------------------------------------------- |
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141 // Non-product mode code |
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142 #ifndef PRODUCT |
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143 |
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144 void CompiledStaticCall::verify() { |
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145 // Verify call. |
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146 NativeCall::verify(); |
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147 if (os::is_MP()) { |
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148 verify_alignment(); |
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149 } |
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150 |
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151 // Verify stub. |
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152 address stub = find_stub(); |
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153 assert(stub != NULL, "no stub found for static call"); |
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154 // Creation also verifies the object. |
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155 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub); |
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156 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address()); |
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157 |
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158 // Verify state. |
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159 assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted(), "sanity check"); |
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160 } |
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161 |
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162 #endif // !PRODUCT |