1 /* 2 * Copyright (c) 2011, 2016, 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 "memory/resourceArea.hpp" 27 #include "oops/oop.inline.hpp" 28 #include "runtime/javaCalls.hpp" 29 #include "runtime/handles.hpp" 30 #include "jvmci/jvmciJavaClasses.hpp" 31 #include "jvmci/jvmciCompiler.hpp" 32 #include "jvmci/jvmciEnv.hpp" 33 #include "jvmci/jvmciRuntime.hpp" 34 #include "runtime/compilationPolicy.hpp" 35 #include "runtime/globals_extension.hpp" 36 37 JVMCICompiler* JVMCICompiler::_instance = NULL; 38 elapsedTimer JVMCICompiler::_codeInstallTimer; 39 40 JVMCICompiler::JVMCICompiler() : AbstractCompiler(jvmci) { 41 _bootstrapping = false; 42 _bootstrap_compilation_request_handled = false; 43 _methods_compiled = 0; 44 assert(_instance == NULL, "only one instance allowed"); 45 _instance = this; 46 } 47 48 // Initialization 49 void JVMCICompiler::initialize() { 50 if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) { 51 return; 52 } 53 54 set_state(initialized); 55 56 // JVMCI is considered as application code so we need to 57 // stop the VM deferring compilation now. 58 CompilationPolicy::completed_vm_startup(); 59 } 60 61 void JVMCICompiler::bootstrap(TRAPS) { 62 if (Arguments::mode() == Arguments::_int) { 63 // Nothing to do in -Xint mode 64 return; 65 } 66 #ifndef PRODUCT 67 // We turn off CompileTheWorld so that compilation requests are not 68 // ignored during bootstrap or that JVMCI can be compiled by C1/C2. 69 FlagSetting ctwOff(CompileTheWorld, false); 70 #endif 71 72 _bootstrapping = true; 73 ResourceMark rm; 74 HandleMark hm; 75 if (PrintBootstrap) { 76 tty->print("Bootstrapping JVMCI"); 77 } 78 jlong start = os::javaTimeMillis(); 79 80 Array<Method*>* objectMethods = SystemDictionary::Object_klass()->methods(); 81 // Initialize compile queue with a selected set of methods. 82 int len = objectMethods->length(); 83 for (int i = 0; i < len; i++) { 84 methodHandle mh = objectMethods->at(i); 85 if (!mh->is_native() && !mh->is_static() && !mh->is_initializer()) { 86 ResourceMark rm; 87 int hot_count = 10; // TODO: what's the appropriate value? 88 CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, CompileTask::Reason_Bootstrap, THREAD); 89 } 90 } 91 92 int qsize; 93 bool first_round = true; 94 int z = 0; 95 do { 96 // Loop until there is something in the queue. 97 do { 98 os::sleep(THREAD, 100, true); 99 qsize = CompileBroker::queue_size(CompLevel_full_optimization); 100 } while (!_bootstrap_compilation_request_handled && first_round && qsize == 0); 101 first_round = false; 102 if (PrintBootstrap) { 103 while (z < (_methods_compiled / 100)) { 104 ++z; 105 tty->print_raw("."); 106 } 107 } 108 } while (qsize != 0); 109 110 if (PrintBootstrap) { 111 tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methods_compiled); 112 } 113 _bootstrapping = false; 114 JVMCIRuntime::bootstrap_finished(CHECK); 115 } 116 117 #define CHECK_ABORT THREAD); \ 118 if (HAS_PENDING_EXCEPTION) { \ 119 char buf[256]; \ 120 jio_snprintf(buf, 256, "Uncaught exception at %s:%d", __FILE__, __LINE__); \ 121 JVMCICompiler::abort_on_pending_exception(PENDING_EXCEPTION, buf); \ 122 return; \ 123 } \ 124 (void)(0 125 126 void JVMCICompiler::compile_method(const methodHandle& method, int entry_bci, JVMCIEnv* env) { 127 JVMCI_EXCEPTION_CONTEXT 128 129 bool is_osr = entry_bci != InvocationEntryBci; 130 if (_bootstrapping && is_osr) { 131 // no OSR compilations during bootstrap - the compiler is just too slow at this point, 132 // and we know that there are no endless loops 133 return; 134 } 135 136 JVMCIRuntime::initialize_well_known_classes(CHECK_ABORT); 137 138 HandleMark hm; 139 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_ABORT); 140 141 JavaValue method_result(T_OBJECT); 142 JavaCallArguments args; 143 args.push_long((jlong) (address) method()); 144 JavaCalls::call_static(&method_result, SystemDictionary::HotSpotResolvedJavaMethodImpl_klass(), 145 vmSymbols::fromMetaspace_name(), vmSymbols::method_fromMetaspace_signature(), &args, THREAD); 146 147 JavaValue result(T_OBJECT); 148 if (!HAS_PENDING_EXCEPTION) { 149 JavaCallArguments args; 150 args.push_oop(receiver); 151 args.push_oop((oop)method_result.get_jobject()); 152 args.push_int(entry_bci); 153 args.push_long((jlong) (address) env); 154 args.push_int(env->task()->compile_id()); 155 JavaCalls::call_special(&result, receiver->klass(), 156 vmSymbols::compileMethod_name(), vmSymbols::compileMethod_signature(), &args, THREAD); 157 } 158 159 // An uncaught exception was thrown during compilation. Generally these 160 // should be handled by the Java code in some useful way but if they leak 161 // through to here report them instead of dying or silently ignoring them. 162 if (HAS_PENDING_EXCEPTION) { 163 Handle exception(THREAD, PENDING_EXCEPTION); 164 CLEAR_PENDING_EXCEPTION; 165 166 java_lang_Throwable::java_printStackTrace(exception, THREAD); 167 if (HAS_PENDING_EXCEPTION) { 168 CLEAR_PENDING_EXCEPTION; 169 } 170 171 env->set_failure("exception throw", false); 172 } else { 173 oop result_object = (oop) result.get_jobject(); 174 if (result_object != NULL) { 175 oop failure_message = CompilationRequestResult::failureMessage(result_object); 176 if (failure_message != NULL) { 177 const char* failure_reason = java_lang_String::as_utf8_string(failure_message); 178 env->set_failure(failure_reason, CompilationRequestResult::retry(result_object) != 0); 179 } else { 180 if (env->task()->code() == NULL) { 181 env->set_failure("no nmethod produced", true); 182 } else { 183 env->task()->set_num_inlined_bytecodes(CompilationRequestResult::inlinedBytecodes(result_object)); 184 Atomic::inc(&_methods_compiled); 185 } 186 } 187 } else { 188 assert(false, "JVMCICompiler.compileMethod should always return non-null"); 189 } 190 } 191 if (_bootstrapping) { 192 _bootstrap_compilation_request_handled = true; 193 } 194 } 195 196 CompLevel JVMCIRuntime::adjust_comp_level(methodHandle method, bool is_osr, CompLevel level, JavaThread* thread) { 197 if (!thread->adjusting_comp_level()) { 198 thread->set_adjusting_comp_level(true); 199 level = adjust_comp_level_inner(method, is_osr, level, thread); 200 thread->set_adjusting_comp_level(false); 201 } 202 return level; 203 } 204 205 /** 206 * Aborts the VM due to an unexpected exception. 207 */ 208 void JVMCICompiler::abort_on_pending_exception(Handle exception, const char* message, bool dump_core) { 209 Thread* THREAD = Thread::current(); 210 CLEAR_PENDING_EXCEPTION; 211 212 java_lang_Throwable::java_printStackTrace(exception, THREAD); 213 214 // Give other aborting threads to also print their stack traces. 215 // This can be very useful when debugging class initialization 216 // failures. 217 assert(THREAD->is_Java_thread(), "compiler threads should be Java threads"); 218 const bool interruptible = true; 219 os::sleep(THREAD, 200, interruptible); 220 221 vm_abort(dump_core); 222 } 223 224 // Compilation entry point for methods 225 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive) { 226 ShouldNotReachHere(); 227 } 228 229 bool JVMCICompiler::is_trivial(Method* method) { 230 if (_bootstrapping) { 231 return false; 232 } 233 return JVMCIRuntime::treat_as_trivial(method); 234 } 235 236 // Print compilation timers and statistics 237 void JVMCICompiler::print_timers() { 238 print_compilation_timers(); 239 } 240 241 // Print compilation timers and statistics 242 void JVMCICompiler::print_compilation_timers() { 243 TRACE_jvmci_1("JVMCICompiler::print_timers"); 244 tty->print_cr(" JVMCI code install time: %6.3f s", _codeInstallTimer.seconds()); 245 }