cd01de591a
Support for segmentation of the code cache. Separate code heaps are created and used to store code of different types. Reviewed-by: kvn, iveresov, roland, anoll, egahlin, sla
120 lines
4.1 KiB
C++
120 lines
4.1 KiB
C++
/*
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* Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "c1/c1_Compilation.hpp"
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#include "c1/c1_Compiler.hpp"
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#include "c1/c1_FrameMap.hpp"
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#include "c1/c1_GraphBuilder.hpp"
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#include "c1/c1_LinearScan.hpp"
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#include "c1/c1_MacroAssembler.hpp"
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#include "c1/c1_Runtime1.hpp"
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#include "c1/c1_ValueType.hpp"
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#include "compiler/compileBroker.hpp"
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#include "compiler/compilerOracle.hpp"
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#include "interpreter/linkResolver.hpp"
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#include "memory/allocation.hpp"
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#include "memory/allocation.inline.hpp"
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#include "memory/resourceArea.hpp"
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#include "prims/nativeLookup.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/interfaceSupport.hpp"
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#include "runtime/sharedRuntime.hpp"
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Compiler::Compiler() : AbstractCompiler(c1) {
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}
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void Compiler::init_c1_runtime() {
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BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
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Arena* arena = new (mtCompiler) Arena(mtCompiler);
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Runtime1::initialize(buffer_blob);
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FrameMap::initialize();
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// initialize data structures
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ValueType::initialize(arena);
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GraphBuilder::initialize();
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// note: to use more than one instance of LinearScan at a time this function call has to
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// be moved somewhere outside of this constructor:
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Interval::initialize(arena);
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}
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void Compiler::initialize() {
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// Buffer blob must be allocated per C1 compiler thread at startup
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BufferBlob* buffer_blob = init_buffer_blob();
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if (should_perform_init()) {
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if (buffer_blob == NULL) {
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// When we come here we are in state 'initializing'; entire C1 compilation
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// can be shut down.
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set_state(failed);
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} else {
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init_c1_runtime();
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set_state(initialized);
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}
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}
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}
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int Compiler::code_buffer_size() {
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assert(SegmentedCodeCache, "Should be only used with a segmented code cache");
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return Compilation::desired_max_code_buffer_size() + Compilation::desired_max_constant_size();
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}
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BufferBlob* Compiler::init_buffer_blob() {
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// Allocate buffer blob once at startup since allocation for each
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// compilation seems to be too expensive (at least on Intel win32).
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assert (CompilerThread::current()->get_buffer_blob() == NULL, "Should initialize only once");
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// setup CodeBuffer. Preallocate a BufferBlob of size
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// NMethodSizeLimit plus some extra space for constants.
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int code_buffer_size = Compilation::desired_max_code_buffer_size() +
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Compilation::desired_max_constant_size();
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BufferBlob* buffer_blob = BufferBlob::create("C1 temporary CodeBuffer", code_buffer_size);
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if (buffer_blob != NULL) {
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CompilerThread::current()->set_buffer_blob(buffer_blob);
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}
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return buffer_blob;
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}
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void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci) {
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BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
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assert(buffer_blob != NULL, "Must exist");
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// invoke compilation
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{
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// We are nested here because we need for the destructor
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// of Compilation to occur before we release the any
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// competing compiler thread
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ResourceMark rm;
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Compilation c(this, env, method, entry_bci, buffer_blob);
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}
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}
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void Compiler::print_timers() {
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Compilation::print_timers();
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}
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