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() && !mh->is_static() && !mh->is_initializer()) {



  78       ResourceMark rm;
  79       int hot_count = 10; // TODO: what's the appropriate value?
  80       CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, CompileTask::Reason_Bootstrap, THREAD);
  81     }
  82   }
  83 
  84   int qsize;
  85   bool first_round = true;
  86   int z = 0;
  87   do {
  88     // Loop until there is something in the queue.
  89     do {
  90       os::sleep(THREAD, 100, true);
  91       qsize = CompileBroker::queue_size(CompLevel_full_optimization);
  92     } while (!_bootstrap_compilation_request_handled && first_round && qsize == 0);
  93     first_round = false;
  94     if (PrintBootstrap) {
  95       while (z < (_methods_compiled / 100)) {
  96         ++z;
  97         tty->print_raw(".");
  98       }
  99     }
 100   } while (qsize != 0);
 101 
 102   if (PrintBootstrap) {
 103     tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methods_compiled);
 104   }
 105   _bootstrapping = false;
 106   JVMCIRuntime::bootstrap_finished(CHECK);
 107 }
 108 
 109 #define CHECK_EXIT THREAD); \
 110 if (HAS_PENDING_EXCEPTION) { \
 111   char buf[256]; \
 112   jio_snprintf(buf, 256, "Uncaught exception at %s:%d", __FILE__, __LINE__); \
 113   JVMCICompiler::exit_on_pending_exception(PENDING_EXCEPTION, buf); \
 114   return; \
 115 } \
 116 (void)(0
 117 
 118 void JVMCICompiler::compile_method(const methodHandle& method, int entry_bci, JVMCIEnv* env) {
 119   JVMCI_EXCEPTION_CONTEXT
 120 
 121   bool is_osr = entry_bci != InvocationEntryBci;
 122   if (_bootstrapping && is_osr) {
 123       // no OSR compilations during bootstrap - the compiler is just too slow at this point,
 124       // and we know that there are no endless loops
 125       env->set_failure(true, "No OSR during boostrap");
 126       return;
 127   }
 128 
 129   JVMCIRuntime::initialize_well_known_classes(CHECK_EXIT);
 130 
 131   HandleMark hm;
 132   Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_EXIT);
 133 
 134   JavaValue method_result(T_OBJECT);
 135   JavaCallArguments args;
 136   args.push_long((jlong) (address) method());
 137   JavaCalls::call_static(&method_result, SystemDictionary::HotSpotResolvedJavaMethodImpl_klass(),
 138                          vmSymbols::fromMetaspace_name(), vmSymbols::method_fromMetaspace_signature(), &args, THREAD);
 139 
 140   JavaValue result(T_OBJECT);
 141   if (!HAS_PENDING_EXCEPTION) {
 142     JavaCallArguments args;
 143     args.push_oop(receiver);
 144     args.push_oop(Handle(THREAD, (oop)method_result.get_jobject()));
 145     args.push_int(entry_bci);
 146     args.push_long((jlong) (address) env);
 147     args.push_int(env->task()->compile_id());
 148     JavaCalls::call_special(&result, receiver->klass(),
 149                             vmSymbols::compileMethod_name(), vmSymbols::compileMethod_signature(), &args, THREAD);
 150   }
 151 
 152   // An uncaught exception was thrown during compilation.  Generally these
 153   // should be handled by the Java code in some useful way but if they leak
 154   // through to here report them instead of dying or silently ignoring them.
 155   if (HAS_PENDING_EXCEPTION) {
 156     Handle exception(THREAD, PENDING_EXCEPTION);
 157     CLEAR_PENDING_EXCEPTION;
 158 
 159     java_lang_Throwable::java_printStackTrace(exception, THREAD);
 160     if (HAS_PENDING_EXCEPTION) {
 161       CLEAR_PENDING_EXCEPTION;
 162     }
 163 
 164     env->set_failure(false, "unexpected exception thrown");
 165   } else {
 166     oop result_object = (oop) result.get_jobject();
 167     if (result_object != NULL) {
 168       oop failure_message = HotSpotCompilationRequestResult::failureMessage(result_object);
 169       if (failure_message != NULL) {
 170         // Copy failure reason into resource memory first ...
 171         const char* failure_reason = java_lang_String::as_utf8_string(failure_message);
 172         // ... and then into the C heap.
 173         failure_reason = os::strdup(failure_reason, mtCompiler);
 174         bool retryable = HotSpotCompilationRequestResult::retry(result_object) != 0;
 175         env->set_failure(retryable, failure_reason, true);
 176       } else {
 177         if (env->task()->code() == NULL) {
 178           env->set_failure(true, "no nmethod produced");
 179         } else {
 180           env->task()->set_num_inlined_bytecodes(HotSpotCompilationRequestResult::inlinedBytecodes(result_object));
 181           Atomic::inc(&_methods_compiled);
 182         }
 183       }
 184     } else {
 185       assert(false, "JVMCICompiler.compileMethod should always return non-null");
 186     }
 187   }
 188   if (_bootstrapping) {
 189     _bootstrap_compilation_request_handled = true;
 190   }
 191 }
 192 
 193 CompLevel JVMCIRuntime::adjust_comp_level(const methodHandle& method, bool is_osr, CompLevel level, JavaThread* thread) {
 194   if (!thread->adjusting_comp_level()) {
 195     thread->set_adjusting_comp_level(true);
 196     level = adjust_comp_level_inner(method, is_osr, level, thread);
 197     thread->set_adjusting_comp_level(false);
 198   }
 199   return level;
 200 }
 201 
 202 void JVMCICompiler::exit_on_pending_exception(oop exception, const char* message) {
 203   JavaThread* THREAD = JavaThread::current();
 204   CLEAR_PENDING_EXCEPTION;
 205 
 206   static volatile int report_error = 0;
 207   if (!report_error && Atomic::cmpxchg(1, &report_error, 0) == 0) {
 208     // Only report an error once
 209     tty->print_raw_cr(message);
 210     Handle ex(THREAD, exception);
 211     java_lang_Throwable::java_printStackTrace(ex, THREAD);
 212   } else {
 213     // Allow error reporting thread to print the stack trace.  Windows
 214     // doesn't allow uninterruptible wait for JavaThreads
 215     const bool interruptible = true;
 216     os::sleep(THREAD, 200, interruptible);
 217   }
 218 
 219   before_exit(THREAD);
 220   vm_exit(-1);
 221 }
 222 
 223 // Compilation entry point for methods
 224 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive) {
 225   ShouldNotReachHere();
 226 }
 227 
 228 // Print compilation timers and statistics
 229 void JVMCICompiler::print_timers() {
 230   print_compilation_timers();
 231 }
 232 
 233 // Print compilation timers and statistics
 234 void JVMCICompiler::print_compilation_timers() {
 235   TRACE_jvmci_1("JVMCICompiler::print_timers");
 236   tty->print_cr("       JVMCI code install time:        %6.3f s",    _codeInstallTimer.seconds());
 237 }
--- EOF ---