Mercurial > hg > graal-compiler
view src/share/vm/compiler/abstractCompiler.hpp @ 3405:8cbcd406c42e
7042740: CMS: assert(n> q) failed: Looping at: ... blockOffsetTable.cpp:557
Summary: Do a one-step look-ahead, when sweeping free or garbage blocks, to avoid overstepping sweep limit, which may become a non-block-boundary because of a heap expansion delta coalescing with a previously co-terminal free block.
Reviewed-by: brutisso, tonyp
author | ysr |
---|---|
date | Fri, 27 May 2011 15:05:33 -0700 |
parents | f95d63e2154a |
children | 06f017f7daa7 d2a62e0f25eb |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP #include "ci/compilerInterface.hpp" typedef void (*initializer)(void); class AbstractCompiler : public CHeapObj { private: bool _is_initialized; // Mark whether compiler object is initialized protected: // Used for tracking global state of compiler runtime initialization enum { uninitialized, initializing, initialized }; // This method will call the initialization method "f" once (per compiler class/subclass) // and do so without holding any locks void initialize_runtimes(initializer f, volatile int* state); public: AbstractCompiler() : _is_initialized(false) {} // Name of this compiler virtual const char* name() = 0; // Missing feature tests virtual bool supports_native() { return true; } virtual bool supports_osr () { return true; } #if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)) virtual bool is_c1 () { return false; } virtual bool is_c2 () { return false; } virtual bool is_shark() { return false; } #else #ifdef COMPILER1 bool is_c1 () { return true; } bool is_c2 () { return false; } bool is_shark() { return false; } #endif // COMPILER1 #ifdef COMPILER2 bool is_c1 () { return false; } bool is_c2 () { return true; } bool is_shark() { return false; } #endif // COMPILER2 #ifdef SHARK bool is_c1 () { return false; } bool is_c2 () { return false; } bool is_shark() { return true; } #endif // SHARK #endif // TIERED // Customization virtual bool needs_stubs () = 0; void mark_initialized() { _is_initialized = true; } bool is_initialized() { return _is_initialized; } virtual void initialize() = 0; // Compilation entry point for methods virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci) { ShouldNotReachHere(); } // Print compilation timers and statistics virtual void print_timers() { ShouldNotReachHere(); } }; #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP