1 /* 2 * Copyright (c) 2011, 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 #include "precompiled.hpp" 25 #include "memory/oopFactory.hpp" 26 #include "oops/oop.inline.hpp" 27 #include "runtime/javaCalls.hpp" 28 #include "runtime/handles.hpp" 29 #include "jvmci/jvmciJavaClasses.hpp" 30 #include "jvmci/jvmciCompiler.hpp" 31 #include "jvmci/jvmciEnv.hpp" 32 #include "jvmci/jvmciRuntime.hpp" 33 #include "runtime/compilationPolicy.hpp" 34 #include "runtime/globals_extension.hpp" 35 36 JVMCICompiler* JVMCICompiler::_instance = NULL; 37 elapsedTimer JVMCICompiler::_codeInstallTimer; 38 39 JVMCICompiler::JVMCICompiler() : AbstractCompiler(jvmci) { 40 _bootstrapping = false; 41 _methodsCompiled = 0; 42 assert(_instance == NULL, "only one instance allowed"); 43 _instance = this; 44 } 45 46 // Initialization 47 void JVMCICompiler::initialize() { 48 if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) { 49 return; 50 } 51 52 set_state(initialized); 53 54 // JVMCI is considered as application code so we need to 55 // stop the VM deferring compilation now. 56 CompilationPolicy::completed_vm_startup(); 57 } 58 59 void JVMCICompiler::bootstrap() { 60 if (Arguments::mode() == Arguments::_int) { 61 // Nothing to do in -Xint mode 62 return; 63 } 64 #ifndef PRODUCT 65 // We turn off CompileTheWorld so that compilation requests are not 66 // ignored during bootstrap or that JVMCI can be compiled by C1/C2. 67 FlagSetting ctwOff(CompileTheWorld, false); 68 #endif 69 70 JavaThread* THREAD = JavaThread::current(); 71 _bootstrapping = true; 72 ResourceMark rm; 73 HandleMark hm; 74 if (PrintBootstrap) { 75 tty->print("Bootstrapping JVMCI"); 76 } 77 jlong start = os::javaTimeMillis(); 78 79 Array<Method*>* objectMethods = SystemDictionary::Object_klass()->methods(); 80 // Initialize compile queue with a selected set of methods. 81 int len = objectMethods->length(); 82 for (int i = 0; i < len; i++) { 83 methodHandle mh = objectMethods->at(i); 84 if (!mh->is_native() && !mh->is_static() && !mh->is_initializer()) { 85 ResourceMark rm; 86 int hot_count = 10; // TODO: what's the appropriate value? 87 CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, "bootstrap", THREAD); 88 } 89 } 90 91 int qsize; 92 bool first_round = true; 93 int z = 0; 94 do { 95 // Loop until there is something in the queue. 96 do { 97 os::sleep(THREAD, 100, true); 98 qsize = CompileBroker::queue_size(CompLevel_full_optimization); 99 } while (first_round && qsize == 0); 100 first_round = false; 101 if (PrintBootstrap) { 102 while (z < (_methodsCompiled / 100)) { 103 ++z; 104 tty->print_raw("."); 105 } 106 } 107 } while (qsize != 0); 108 109 if (PrintBootstrap) { 110 tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methodsCompiled); 111 } 112 _bootstrapping = false; 113 } 114 115 #define CHECK_ABORT THREAD); \ 116 if (HAS_PENDING_EXCEPTION) { \ 117 char buf[256]; \ 118 jio_snprintf(buf, 256, "Uncaught exception at %s:%d", __FILE__, __LINE__); \ 119 JVMCICompiler::abort_on_pending_exception(PENDING_EXCEPTION, buf); \ 120 return; \ 121 } \ 122 (void)(0 123 124 void JVMCICompiler::compile_method(const methodHandle& method, int entry_bci, JVMCIEnv* env) { 125 JVMCI_EXCEPTION_CONTEXT 126 127 bool is_osr = entry_bci != InvocationEntryBci; 128 if (_bootstrapping && is_osr) { 129 // no OSR compilations during bootstrap - the compiler is just too slow at this point, 130 // and we know that there are no endless loops 131 return; 132 } 133 134 JVMCIRuntime::initialize_well_known_classes(CHECK_ABORT); 135 136 HandleMark hm; 137 ResourceMark rm; 138 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_ABORT); 139 140 JavaValue method_result(T_OBJECT); 141 JavaCallArguments args; 142 args.push_long((jlong) (address) method()); 143 JavaCalls::call_static(&method_result, SystemDictionary::HotSpotResolvedJavaMethodImpl_klass(), 144 vmSymbols::fromMetaspace_name(), vmSymbols::method_fromMetaspace_signature(), &args, THREAD); 145 146 if (!HAS_PENDING_EXCEPTION) { 147 JavaValue result(T_VOID); 148 JavaCallArguments args; 149 args.push_oop(receiver); 150 args.push_oop((oop)method_result.get_jobject()); 151 args.push_int(entry_bci); 152 args.push_long((jlong) (address) env); 153 args.push_int(env->task()->compile_id()); 154 JavaCalls::call_special(&result, receiver->klass(), 155 vmSymbols::compileMethod_name(), vmSymbols::compileMethod_signature(), &args, THREAD); 156 } 157 158 // An uncaught exception was thrown during compilation. Generally these 159 // should be handled by the Java code in some useful way but if they leak 160 // through to here report them instead of dying or silently ignoring them. 161 if (HAS_PENDING_EXCEPTION) { 162 Handle exception(THREAD, PENDING_EXCEPTION); 163 CLEAR_PENDING_EXCEPTION; 164 165 java_lang_Throwable::java_printStackTrace(exception, THREAD); 166 167 // Something went wrong so disable compilation at this level 168 method->set_not_compilable(CompLevel_full_optimization); 169 } else { 170 _methodsCompiled++; 171 } 172 } 173 174 /** 175 * Aborts the VM due to an unexpected exception. 176 */ 177 void JVMCICompiler::abort_on_pending_exception(Handle exception, const char* message, bool dump_core) { 178 Thread* THREAD = Thread::current(); 179 CLEAR_PENDING_EXCEPTION; 180 181 java_lang_Throwable::java_printStackTrace(exception, THREAD); 182 183 // Give other aborting threads to also print their stack traces. 184 // This can be very useful when debugging class initialization 185 // failures. 186 assert(THREAD->is_Java_thread(), "compiler threads should be Java threads"); 187 const bool interruptible = true; 188 os::sleep(THREAD, 200, interruptible); 189 190 vm_abort(dump_core); 191 } 192 193 // Compilation entry point for methods 194 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci) { 195 ShouldNotReachHere(); 196 } 197 198 bool JVMCICompiler::is_trivial(Method* method) { 199 if (_bootstrapping) { 200 return false; 201 } 202 return JVMCIRuntime::treat_as_trivial(method); 203 } 204 205 // Print compilation timers and statistics 206 void JVMCICompiler::print_timers() { 207 print_compilation_timers(); 208 } 209 210 // Print compilation timers and statistics 211 void JVMCICompiler::print_compilation_timers() { 212 TRACE_jvmci_1("JVMCICompiler::print_timers"); 213 tty->print_cr(" JVMCI code install time: %6.3f s", _codeInstallTimer.seconds()); 214 }