1 /*
   2  * Copyright (c) 1999, 2011, 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   if (buffer_blob == NULL) {
  59     buffer_blob = build_buffer_blob();
  60     CompilerThread::current()->set_buffer_blob(buffer_blob);
  61   }
  62   Arena* arena = new Arena();
  63   Runtime1::initialize(buffer_blob);
  64   FrameMap::initialize();
  65   // initialize data structures
  66   ValueType::initialize(arena);
  67   // Instruction::initialize();
  68   // BlockBegin::initialize();
  69   GraphBuilder::initialize();
  70   // note: to use more than one instance of LinearScan at a time this function call has to
  71   //       be moved somewhere outside of this constructor:
  72   Interval::initialize(arena);
  73 }
  74 
  75 
  76 void Compiler::initialize() {
  77   if (_runtimes != initialized) {
  78     initialize_runtimes( initialize_all, &_runtimes);
  79   }
  80   mark_initialized();
  81 }
  82 
  83 
  84 BufferBlob* Compiler::build_buffer_blob() {
  85   // setup CodeBuffer.  Preallocate a BufferBlob of size
  86   // NMethodSizeLimit plus some extra space for constants.
  87   int code_buffer_size = Compilation::desired_max_code_buffer_size() +
  88     Compilation::desired_max_constant_size();
  89   BufferBlob* blob = BufferBlob::create("Compiler1 temporary CodeBuffer",
  90                                         code_buffer_size);
  91   guarantee(blob != NULL, "must create initial code buffer");
  92   return blob;
  93 }
  94 
  95 
  96 void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci) {
  97   if (!is_initialized()) {
  98     initialize();
  99   }
 100 
 101   // Allocate buffer blob once at startup since allocation for each
 102   // compilation seems to be too expensive (at least on Intel win32).
 103   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
 104   if (buffer_blob == NULL) {
 105     buffer_blob = build_buffer_blob();
 106     CompilerThread::current()->set_buffer_blob(buffer_blob);
 107   }
 108 
 109   // invoke compilation
 110   {
 111     // We are nested here because we need for the destructor
 112     // of Compilation to occur before we release the any
 113     // competing compiler thread
 114     ResourceMark rm;
 115     Compilation c(this, env, method, entry_bci, buffer_blob);
 116   }
 117 }
 118 
 119 
 120 void Compiler::print_timers() {
 121   Compilation::print_timers();
 122 }