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 
  46 Compiler::Compiler () {}
  47 Compiler::~Compiler() {}
  48 
  49 void Compiler::init_c1_runtime() {
  50   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
  51   Arena* arena = new (mtCompiler) Arena();
  52   Runtime1::initialize(buffer_blob);
  53   FrameMap::initialize();
  54   // initialize data structures
  55   ValueType::initialize(arena);
  56   GraphBuilder::initialize();
  57   // note: to use more than one instance of LinearScan at a time this function call has to
  58   //       be moved somewhere outside of this constructor:
  59   Interval::initialize(arena);
  60 }
  61 
  62 
  63 void Compiler::initialize() {
  64   // Buffer blob must be allocated per C1 compiler thread at startup
  65   BufferBlob* buffer_blob = init_buffer_blob();
  66 
  67   if (should_perform_init()) {
  68     if (buffer_blob == NULL) {
  69       // When we come here we are in state 'initializing'; entire C1 compilation
  70       // can be shut down.
  71       set_state(failed);
  72     } else {
  73       init_c1_runtime();
  74       set_state(initialized);
  75     }
  76   }
  77 }
  78 
  79 BufferBlob* Compiler::init_buffer_blob() {
  80   // Allocate buffer blob once at startup since allocation for each
  81   // compilation seems to be too expensive (at least on Intel win32).
  82   assert (CompilerThread::current()->get_buffer_blob() == NULL, "Should initialize only once");
  83 
  84   // setup CodeBuffer.  Preallocate a BufferBlob of size
  85   // NMethodSizeLimit plus some extra space for constants.
  86   int code_buffer_size = Compilation::desired_max_code_buffer_size() +
  87     Compilation::desired_max_constant_size();
  88 
  89   BufferBlob* buffer_blob = BufferBlob::create("C1 temporary CodeBuffer", code_buffer_size);
  90   if (buffer_blob != NULL) {
  91     CompilerThread::current()->set_buffer_blob(buffer_blob);
  92   }
  93 
  94   return buffer_blob;
  95 }
  96 
  97 
  98 void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci) {
  99   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
 100   assert(buffer_blob != NULL, "Must exist");
 101   // invoke compilation
 102   {
 103     // We are nested here because we need for the destructor
 104     // of Compilation to occur before we release the any
 105     // competing compiler thread
 106     ResourceMark rm;
 107     Compilation c(this, env, method, entry_bci, buffer_blob);
 108   }
 109 }
 110 
 111 
 112 void Compiler::print_timers() {
 113   Compilation::print_timers();
 114 }