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 "compiler/compileBroker.hpp"
  26 #include "classfile/moduleEntry.hpp"
  27 #include "jvmci/jvmciEnv.hpp"
  28 #include "jvmci/jvmciRuntime.hpp"
  29 #include "oops/objArrayOop.inline.hpp"
  30 #include "runtime/handles.inline.hpp"
  31 
  32 JVMCICompiler* JVMCICompiler::_instance = NULL;
  33 elapsedTimer JVMCICompiler::_codeInstallTimer;
  34 
  35 JVMCICompiler::JVMCICompiler() : AbstractCompiler(compiler_jvmci) {
  36   _bootstrapping = false;
  37   _bootstrap_compilation_request_handled = false;
  38   _methods_compiled = 0;
  39   assert(_instance == NULL, "only one instance allowed");
  40   _instance = this;
  41 }
  42 
  43 // Initialization
  44 void JVMCICompiler::initialize() {
  45   if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) {
  46     return;
  47   }
  48 
  49   set_state(initialized);
  50 }
  51 
  52 void JVMCICompiler::bootstrap(TRAPS) {
  53   assert(THREAD->is_Java_thread(), "must be");
  54   if (Arguments::mode() == Arguments::_int) {
  55     // Nothing to do in -Xint mode
  56     return;
  57   }
  58   _bootstrapping = true;
  59   ResourceMark rm;
  60   HandleMark hm;
  61   if (PrintBootstrap) {
  62     tty->print("Bootstrapping JVMCI");
  63   }
  64   jlong start = os::javaTimeMillis();
  65 
  66   Array<Method*>* objectMethods = SystemDictionary::Object_klass()->methods();
  67   // Initialize compile queue with a selected set of methods.
  68   int len = objectMethods->length();
  69   for (int i = 0; i < len; i++) {
  70     methodHandle mh = objectMethods->at(i);
  71     if (!mh->is_native() && !mh->is_static() && !mh->is_initializer()) {
  72       ResourceMark rm;
  73       int hot_count = 10; // TODO: what's the appropriate value?
  74       CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, CompileTask::Reason_Bootstrap, THREAD);
  75     }
  76   }
  77 
  78   int qsize;
  79   bool first_round = true;
  80   int z = 0;
  81   do {
  82     // Loop until there is something in the queue.
  83     do {
  84       os::sleep((JavaThread*)THREAD, 100);
  85       qsize = CompileBroker::queue_size(CompLevel_full_optimization);
  86     } while (!_bootstrap_compilation_request_handled && first_round && qsize == 0);
  87     first_round = false;
  88     if (PrintBootstrap) {
  89       while (z < (_methods_compiled / 100)) {
  90         ++z;
  91         tty->print_raw(".");
  92       }
  93     }
  94   } while (qsize != 0);
  95 
  96   if (PrintBootstrap) {
  97     tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methods_compiled);
  98   }
  99   _bootstrapping = false;
 100   JVMCI::compiler_runtime()->bootstrap_finished(CHECK);
 101 }
 102 
 103 bool JVMCICompiler::force_comp_at_level_simple(Method *method) {
 104   if (UseJVMCINativeLibrary) {
 105     // This mechanism exists to force compilation of a JVMCI compiler by C1
 106     // to reduces the compilation time spent on the JVMCI compiler itself. In
 107     // +UseJVMCINativeLibrary mode, the JVMCI compiler is AOT compiled.
 108     return false;
 109   }
 110 
 111   if (_bootstrapping) {
 112     // When bootstrapping, the JVMCI compiler can compile its own methods.
 113     return false;
 114   }
 115 
 116   JVMCIRuntime* runtime = JVMCI::compiler_runtime();
 117   if (runtime != NULL && runtime->is_HotSpotJVMCIRuntime_initialized()) {
 118     JavaThread* thread = JavaThread::current();
 119     HandleMark hm(thread);
 120     THREAD_JVMCIENV(thread);
 121     JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(JVMCIENV);
 122     objArrayHandle excludeModules(thread, HotSpotJVMCI::HotSpotJVMCIRuntime::excludeFromJVMCICompilation(JVMCIENV, HotSpotJVMCI::resolve(receiver)));
 123     if (excludeModules.not_null()) {
 124       ModuleEntry* moduleEntry = method->method_holder()->module();
 125       for (int i = 0; i < excludeModules->length(); i++) {
 126         if (oopDesc::equals(excludeModules->obj_at(i), moduleEntry->module())) {
 127           return true;
 128         }
 129       }
 130     }
 131   }
 132   return false;
 133 }
 134 
 135 // Compilation entry point for methods
 136 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive) {
 137   ShouldNotReachHere();
 138 }
 139 
 140 // Print compilation timers and statistics
 141 void JVMCICompiler::print_timers() {
 142   print_compilation_timers();
 143 }
 144 
 145 // Print compilation timers and statistics
 146 void JVMCICompiler::print_compilation_timers() {
 147   TRACE_jvmci_1("JVMCICompiler::print_timers");
 148   tty->print_cr("       JVMCI code install time:        %6.3f s",    _codeInstallTimer.seconds());
 149 }
--- EOF ---