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annotate src/share/vm/jvmci/jvmciCompiler.cpp @ 22538:ea6d1727fdc6

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Remove BufferBlob from JavaThread and allocate as needed during compilation
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Tue, 08 Sep 2015 16:41:04 -0700
parents d1019456c4d2
children 02fc27dc1da7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2011, 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 #include "precompiled.hpp"
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25 #include "memory/oopFactory.hpp"
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26 #include "runtime/javaCalls.hpp"
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27 #include "jvmci/jvmciJavaAccess.hpp"
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28 #include "jvmci/jvmciCompiler.hpp"
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29 #include "jvmci/jvmciEnv.hpp"
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30 #include "jvmci/jvmciRuntime.hpp"
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31 #include "runtime/compilationPolicy.hpp"
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32 #include "runtime/globals_extension.hpp"
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33
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34 JVMCICompiler* JVMCICompiler::_instance = NULL;
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35 elapsedTimer JVMCICompiler::_codeInstallTimer;
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36
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37 JVMCICompiler::JVMCICompiler() : AbstractCompiler(jvmci) {
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38 #ifdef COMPILERJVMCI
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39 _bootstrapping = false;
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40 _methodsCompiled = 0;
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41 #endif
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42 assert(_instance == NULL, "only one instance allowed");
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43 _instance = this;
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44 }
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45
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46 // Initialization
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47 void JVMCICompiler::initialize() {
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48 #ifdef COMPILERJVMCI
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49 if (!UseCompiler || !should_perform_init()) {
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50 return;
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51 }
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52
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53 set_state(initialized);
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54
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55 // JVMCI is considered as application code so we need to
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56 // stop the VM deferring compilation now.
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57 CompilationPolicy::completed_vm_startup();
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58 #endif // COMPILERJVMCI
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59 }
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60
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61 #ifdef COMPILERJVMCI
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62 void JVMCICompiler::bootstrap() {
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63 #ifndef PRODUCT
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64 // We turn off CompileTheWorld so that compilation requests are not
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65 // ignored during bootstrap or that JVMCI can be compiled by C1/C2.
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66 FlagSetting ctwOff(CompileTheWorld, false);
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67 #endif
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68
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69 JavaThread* THREAD = JavaThread::current();
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70 _bootstrapping = true;
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71 // Allow bootstrap to perform JVMCI compilations of itself
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72 bool c1only = JVMCICompileWithC1Only;
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73 JVMCICompileWithC1Only = false;
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74 ResourceMark rm;
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75 HandleMark hm;
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76 if (PrintBootstrap) {
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77 tty->print("Bootstrapping JVMCI");
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78 }
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79 jlong start = os::javaTimeMillis();
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80
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81 Array<Method*>* objectMethods = InstanceKlass::cast(SystemDictionary::Object_klass())->methods();
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82 // Initialize compile queue with a selected set of methods.
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83 int len = objectMethods->length();
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84 for (int i = 0; i < len; i++) {
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85 methodHandle mh = objectMethods->at(i);
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86 if (!mh->is_native() && !mh->is_static() && !mh->is_initializer()) {
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87 ResourceMark rm;
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88 int hot_count = 10; // TODO: what's the appropriate value?
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89 CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, "bootstrap", THREAD);
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90 }
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91 }
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92
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93 int qsize;
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94 bool first_round = true;
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95 int z = 0;
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96 do {
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97 // Loop until there is something in the queue.
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98 do {
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99 os::sleep(THREAD, 100, true);
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100 qsize = CompileBroker::queue_size(CompLevel_full_optimization);
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101 } while (first_round && qsize == 0);
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102 first_round = false;
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103 if (PrintBootstrap) {
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104 while (z < (_methodsCompiled / 100)) {
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105 ++z;
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106 tty->print_raw(".");
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107 }
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108 }
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109 } while (qsize != 0);
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110
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111 if (PrintBootstrap) {
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112 tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methodsCompiled);
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113 }
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114 JVMCICompileWithC1Only = c1only;
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115 _bootstrapping = false;
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116 }
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117
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118 void JVMCICompiler::compile_method(methodHandle method, int entry_bci, JVMCIEnv* env) {
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119 JVMCI_EXCEPTION_CONTEXT
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120
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121 bool is_osr = entry_bci != InvocationEntryBci;
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122 if (_bootstrapping && is_osr) {
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123 // no OSR compilations during bootstrap - the compiler is just too slow at this point,
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124 // and we know that there are no endless loops
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125 return;
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126 }
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127
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128 JVMCIRuntime::ensure_jvmci_class_loader_is_initialized();
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129 jvmci_compute_offsets();
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130 HandleMark hm;
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131 ResourceMark rm;
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132 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime();
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133
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134 JavaValue method_result(T_OBJECT);
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135 {
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136 JavaCallArguments args;
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137 args.push_long((jlong) (address) method());
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138 JavaCalls::call_static(&method_result, SystemDictionary::HotSpotResolvedJavaMethodImpl_klass(), vmSymbols::fromMetaspace_name(), vmSymbols::method_fromMetaspace_signature(), &args, CHECK_ABORT);
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139 }
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140
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141 JavaValue result(T_VOID);
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142 JavaCallArguments args;
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143 args.push_oop(receiver);
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144 args.push_oop((oop)method_result.get_jobject());
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145 args.push_int(entry_bci);
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146 args.push_long((jlong) (address) env);
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147 args.push_int(env->task()->compile_id());
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148 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::compileMethod_name(), vmSymbols::compileMethod_signature(), &args, CHECK_ABORT);
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149
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150 _methodsCompiled++;
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151 }
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152
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153
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154 // Compilation entry point for methods
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155 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci) {
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156 ShouldNotReachHere();
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157 }
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158
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159 // Print compilation timers and statistics
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160 void JVMCICompiler::print_timers() {
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161 print_compilation_timers();
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162 }
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163
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164 #endif // COMPILERJVMCI
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165
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166 // Print compilation timers and statistics
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167 void JVMCICompiler::print_compilation_timers() {
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168 TRACE_jvmci_1("JVMCICompiler::print_timers");
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169 tty->print_cr(" JVMCI code install time: %6.3f s", _codeInstallTimer.seconds());
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170 }