1 /*
   2  * Copyright (c) 1999, 2012, 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 
  25 #include "precompiled.hpp"
  26 #include "c1/c1_Compilation.hpp"
  27 #include "c1/c1_Compiler.hpp"
  28 #include "c1/c1_FrameMap.hpp"
  29 #include "c1/c1_GraphBuilder.hpp"
  30 #include "c1/c1_LinearScan.hpp"
  31 #include "c1/c1_MacroAssembler.hpp"
  32 #include "c1/c1_Runtime1.hpp"
  33 #include "c1/c1_ValueType.hpp"
  34 #include "compiler/compileBroker.hpp"
  35 #include "compiler/compilerOracle.hpp"
  36 #include "interpreter/linkResolver.hpp"
  37 #include "memory/allocation.hpp"
  38 #include "memory/allocation.inline.hpp"
  39 #include "memory/resourceArea.hpp"
  40 #include "prims/nativeLookup.hpp"
  41 #include "runtime/arguments.hpp"
  42 #include "runtime/interfaceSupport.hpp"
  43 #include "runtime/sharedRuntime.hpp"
  44 
  45 volatile int Compiler::_runtimes = uninitialized;
  46 
  47 Compiler::Compiler() {
  48 }
  49 
  50 
  51 Compiler::~Compiler() {
  52   Unimplemented();
  53 }
  54 
  55 
  56 void Compiler::initialize_all() {
  57   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
  58   Arena* arena = new (mtCompiler) Arena();
  59   Runtime1::initialize(buffer_blob);
  60   FrameMap::initialize();
  61   // initialize data structures
  62   ValueType::initialize(arena);
  63   // Instruction::initialize();
  64   // BlockBegin::initialize();
  65   GraphBuilder::initialize();
  66   // note: to use more than one instance of LinearScan at a time this function call has to
  67   //       be moved somewhere outside of this constructor:
  68   Interval::initialize(arena);
  69 }
  70 
  71 
  72 void Compiler::initialize() {
  73   if (_runtimes != initialized) {
  74     initialize_runtimes( initialize_all, &_runtimes);
  75   }
  76   mark_initialized();
  77 }
  78 
  79 
  80 BufferBlob* Compiler::get_buffer_blob(ciEnv* env) {
  81   // Allocate buffer blob once at startup since allocation for each
  82   // compilation seems to be too expensive (at least on Intel win32).
  83   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
  84   if (buffer_blob != NULL) {
  85     return buffer_blob;
  86   }
  87 
  88   // setup CodeBuffer.  Preallocate a BufferBlob of size
  89   // NMethodSizeLimit plus some extra space for constants.
  90   int code_buffer_size = Compilation::desired_max_code_buffer_size() +
  91     Compilation::desired_max_constant_size();
  92 
  93   BufferBlob* blob = BufferBlob::create("Compiler1 temporary CodeBuffer",
  94                                           code_buffer_size);
  95   if (blob == NULL) {
  96     CompileBroker::handle_full_code_cache();
  97     env->record_failure("Full CacheCache\n");
  98   } else {
  99     CompilerThread::current()->set_buffer_blob(buffer_blob);
 100   }
 101 
 102   return blob;
 103 }
 104 
 105 
 106 void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci) {
 107   BufferBlob* buffer_blob = Compiler::get_buffer_blob(env);
 108   if (buffer_blob == NULL) {
 109     return;
 110   }
 111 
 112   if (!is_initialized()) {
 113     initialize();
 114   }
 115   // invoke compilation
 116   {
 117     // We are nested here because we need for the destructor
 118     // of Compilation to occur before we release the any
 119     // competing compiler thread
 120     ResourceMark rm;
 121     Compilation c(this, env, method, entry_bci, buffer_blob);
 122   }
 123 }
 124 
 125 
 126 void Compiler::print_timers() {
 127   Compilation::print_timers();
 128 }