rev 55090 : secret-sfac

   1 /*
   2  * Copyright (c) 2011, 2019, 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 "jvm.h"
  26 #include "memory/oopFactory.hpp"
  27 #include "memory/resourceArea.hpp"
  28 #include "oops/oop.inline.hpp"
  29 #include "runtime/javaCalls.hpp"
  30 #include "runtime/handles.hpp"
  31 #include "jvmci/jvmciJavaClasses.hpp"
  32 #include "jvmci/jvmciCompiler.hpp"
  33 #include "jvmci/jvmciEnv.hpp"
  34 #include "jvmci/jvmciRuntime.hpp"
  35 #include "runtime/compilationPolicy.hpp"
  36 #include "runtime/globals_extension.hpp"
  37 #include "runtime/handles.inline.hpp"
  38 
  39 JVMCICompiler* JVMCICompiler::_instance = NULL;
  40 elapsedTimer JVMCICompiler::_codeInstallTimer;
  41 
  42 JVMCICompiler::JVMCICompiler() : AbstractCompiler(compiler_jvmci) {
  43   _bootstrapping = false;
  44   _bootstrap_compilation_request_handled = false;
  45   _methods_compiled = 0;
  46   assert(_instance == NULL, "only one instance allowed");
  47   _instance = this;
  48 }
  49 
  50 // Initialization
  51 void JVMCICompiler::initialize() {
  52   if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) {
  53     return;
  54   }
  55 
  56   set_state(initialized);
  57 }
  58 
  59 void JVMCICompiler::bootstrap(TRAPS) {
  60   if (Arguments::mode() == Arguments::_int) {
  61     // Nothing to do in -Xint mode
  62     return;
  63   }
  64   _bootstrapping = true;
  65   ResourceMark rm;
  66   HandleMark hm;
  67   if (PrintBootstrap) {
  68     tty->print("Bootstrapping JVMCI");
  69   }
  70   jlong start = os::javaTimeMillis();
  71 
  72   Array<Method*>* objectMethods = SystemDictionary::Object_klass()->methods();
  73   // Initialize compile queue with a selected set of methods.
  74   int len = objectMethods->length();
  75   for (int i = 0; i < len; i++) {
  76     methodHandle mh = objectMethods->at(i);
  77     if (!mh->is_native() &&
  78         !mh->is_static() &&
  79         !mh->is_object_constructor() &&
  80         !mh->is_class_initializer()) {
  81       ResourceMark rm;
  82       int hot_count = 10; // TODO: what's the appropriate value?
  83       CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, CompileTask::Reason_Bootstrap, THREAD);
  84     }
  85   }
  86 
  87   int qsize;
  88   bool first_round = true;
  89   int z = 0;
  90   do {
  91     // Loop until there is something in the queue.
  92     do {
  93       os::sleep(THREAD, 100, true);
  94       qsize = CompileBroker::queue_size(CompLevel_full_optimization);
  95     } while (!_bootstrap_compilation_request_handled && first_round && qsize == 0);
  96     first_round = false;
  97     if (PrintBootstrap) {
  98       while (z < (_methods_compiled / 100)) {
  99         ++z;
 100         tty->print_raw(".");
 101       }
 102     }
 103   } while (qsize != 0);
 104 
 105   if (PrintBootstrap) {
 106     tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methods_compiled);
 107   }
 108   _bootstrapping = false;
 109   JVMCIRuntime::bootstrap_finished(CHECK);
 110 }
 111 
 112 #define CHECK_EXIT THREAD); \
 113 if (HAS_PENDING_EXCEPTION) { \
 114   char buf[256]; \
 115   jio_snprintf(buf, 256, "Uncaught exception at %s:%d", __FILE__, __LINE__); \
 116   JVMCICompiler::exit_on_pending_exception(PENDING_EXCEPTION, buf); \
 117   return; \
 118 } \
 119 (void)(0
 120 
 121 void JVMCICompiler::compile_method(const methodHandle& method, int entry_bci, JVMCIEnv* env) {
 122   JVMCI_EXCEPTION_CONTEXT
 123 
 124   bool is_osr = entry_bci != InvocationEntryBci;
 125   if (_bootstrapping && is_osr) {
 126       // no OSR compilations during bootstrap - the compiler is just too slow at this point,
 127       // and we know that there are no endless loops
 128       env->set_failure(true, "No OSR during boostrap");
 129       return;
 130   }
 131 
 132   JVMCIRuntime::initialize_well_known_classes(CHECK_EXIT);
 133 
 134   HandleMark hm;
 135   Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_EXIT);
 136 
 137   JavaValue method_result(T_OBJECT);
 138   JavaCallArguments args;
 139   args.push_long((jlong) (address) method());
 140   JavaCalls::call_static(&method_result, SystemDictionary::HotSpotResolvedJavaMethodImpl_klass(),
 141                          vmSymbols::fromMetaspace_name(), vmSymbols::method_fromMetaspace_signature(), &args, THREAD);
 142 
 143   JavaValue result(T_OBJECT);
 144   if (!HAS_PENDING_EXCEPTION) {
 145     JavaCallArguments args;
 146     args.push_oop(receiver);
 147     args.push_oop(Handle(THREAD, (oop)method_result.get_jobject()));
 148     args.push_int(entry_bci);
 149     args.push_long((jlong) (address) env);
 150     args.push_int(env->task()->compile_id());
 151     JavaCalls::call_special(&result, receiver->klass(),
 152                             vmSymbols::compileMethod_name(), vmSymbols::compileMethod_signature(), &args, THREAD);
 153   }
 154 
 155   // An uncaught exception was thrown during compilation.  Generally these
 156   // should be handled by the Java code in some useful way but if they leak
 157   // through to here report them instead of dying or silently ignoring them.
 158   if (HAS_PENDING_EXCEPTION) {
 159     Handle exception(THREAD, PENDING_EXCEPTION);
 160     CLEAR_PENDING_EXCEPTION;
 161 
 162     java_lang_Throwable::java_printStackTrace(exception, THREAD);
 163     if (HAS_PENDING_EXCEPTION) {
 164       CLEAR_PENDING_EXCEPTION;
 165     }
 166 
 167     env->set_failure(false, "unexpected exception thrown");
 168   } else {
 169     oop result_object = (oop) result.get_jobject();
 170     if (result_object != NULL) {
 171       oop failure_message = HotSpotCompilationRequestResult::failureMessage(result_object);
 172       if (failure_message != NULL) {
 173         // Copy failure reason into resource memory first ...
 174         const char* failure_reason = java_lang_String::as_utf8_string(failure_message);
 175         // ... and then into the C heap.
 176         failure_reason = os::strdup(failure_reason, mtCompiler);
 177         bool retryable = HotSpotCompilationRequestResult::retry(result_object) != 0;
 178         env->set_failure(retryable, failure_reason, true);
 179       } else {
 180         if (env->task()->code() == NULL) {
 181           env->set_failure(true, "no nmethod produced");
 182         } else {
 183           env->task()->set_num_inlined_bytecodes(HotSpotCompilationRequestResult::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(const 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 void JVMCICompiler::exit_on_pending_exception(oop exception, const char* message) {
 206   JavaThread* THREAD = JavaThread::current();
 207   CLEAR_PENDING_EXCEPTION;
 208 
 209   static volatile int report_error = 0;
 210   if (!report_error && Atomic::cmpxchg(1, &report_error, 0) == 0) {
 211     // Only report an error once
 212     tty->print_raw_cr(message);
 213     Handle ex(THREAD, exception);
 214     java_lang_Throwable::java_printStackTrace(ex, THREAD);
 215   } else {
 216     // Allow error reporting thread to print the stack trace.  Windows
 217     // doesn't allow uninterruptible wait for JavaThreads
 218     const bool interruptible = true;
 219     os::sleep(THREAD, 200, interruptible);
 220   }
 221 
 222   before_exit(THREAD);
 223   vm_exit(-1);
 224 }
 225 
 226 // Compilation entry point for methods
 227 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive) {
 228   ShouldNotReachHere();
 229 }
 230 
 231 // Print compilation timers and statistics
 232 void JVMCICompiler::print_timers() {
 233   print_compilation_timers();
 234 }
 235 
 236 // Print compilation timers and statistics
 237 void JVMCICompiler::print_compilation_timers() {
 238   TRACE_jvmci_1("JVMCICompiler::print_timers");
 239   tty->print_cr("       JVMCI code install time:        %6.3f s",    _codeInstallTimer.seconds());
 240 }
--- EOF ---