1 /*
   2  * Copyright (c) 1999, 2007, 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 "incls/_precompiled.incl"
  26 #include "incls/_c1_Compiler.cpp.incl"
  27 
  28 volatile int Compiler::_runtimes = uninitialized;
  29 
  30 Compiler::Compiler() {
  31 }
  32 
  33 
  34 Compiler::~Compiler() {
  35   Unimplemented();
  36 }
  37 
  38 
  39 void Compiler::initialize_all() {
  40   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
  41   Arena* arena = new Arena();
  42   Runtime1::initialize(buffer_blob);
  43   FrameMap::initialize();
  44   // initialize data structures
  45   ValueType::initialize(arena);
  46   // Instruction::initialize();
  47   // BlockBegin::initialize();
  48   GraphBuilder::initialize();
  49   // note: to use more than one instance of LinearScan at a time this function call has to
  50   //       be moved somewhere outside of this constructor:
  51   Interval::initialize(arena);
  52 }
  53 
  54 
  55 void Compiler::initialize() {
  56   if (_runtimes != initialized) {
  57     initialize_runtimes( initialize_all, &_runtimes);
  58   }
  59   mark_initialized();
  60 }
  61 
  62 
  63 BufferBlob* Compiler::build_buffer_blob() {
  64   // setup CodeBuffer.  Preallocate a BufferBlob of size
  65   // NMethodSizeLimit plus some extra space for constants.
  66   int code_buffer_size = Compilation::desired_max_code_buffer_size() +
  67     Compilation::desired_max_constant_size();
  68   BufferBlob* blob = BufferBlob::create("Compiler1 temporary CodeBuffer",
  69                                         code_buffer_size);
  70   guarantee(blob != NULL, "must create initial code buffer");
  71   return blob;
  72 }
  73 
  74 
  75 void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci) {
  76   // Allocate buffer blob once at startup since allocation for each
  77   // compilation seems to be too expensive (at least on Intel win32).
  78   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
  79   if (buffer_blob == NULL) {
  80     buffer_blob = build_buffer_blob();
  81     CompilerThread::current()->set_buffer_blob(buffer_blob);
  82   }
  83 
  84   if (!is_initialized()) {
  85     initialize();
  86   }
  87   // invoke compilation
  88   {
  89     // We are nested here because we need for the destructor
  90     // of Compilation to occur before we release the any
  91     // competing compiler thread
  92     ResourceMark rm;
  93     Compilation c(this, env, method, entry_bci, buffer_blob);
  94   }
  95 }
  96 
  97 
  98 void Compiler::print_timers() {
  99   Compilation::print_timers();
 100 }