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src/share/vm/compiler/abstractCompiler.hpp@d2ede61b7a12 (annotated)

src/share/vm/compiler/abstractCompiler.hpp

Wed, 11 Aug 2010 05:51:21 -0700

author

twisti

date

Wed, 11 Aug 2010 05:51:21 -0700

changeset 2047

d2ede61b7a12

parent 1907

c18cbe5936b8

child 2314

f95d63e2154a

permissions

-rw-r--r--

6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>

duke@435	1	/*
twisti@2047	2	* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	typedef void (*initializer)(void);
duke@435	26
duke@435	27	class AbstractCompiler : public CHeapObj {
duke@435	28	private:
duke@435	29	bool _is_initialized; // Mark whether compiler object is initialized
duke@435	30
duke@435	31	protected:
duke@435	32	// Used for tracking global state of compiler runtime initialization
duke@435	33	enum { uninitialized, initializing, initialized };
duke@435	34
duke@435	35	// This method will call the initialization method "f" once (per compiler class/subclass)
duke@435	36	// and do so without holding any locks
duke@435	37	void initialize_runtimes(initializer f, volatile int* state);
duke@435	38
duke@435	39	public:
duke@435	40	AbstractCompiler() : _is_initialized(false) {}
duke@435	41
duke@435	42	// Name of this compiler
duke@435	43	virtual const char* name() = 0;
duke@435	44
duke@435	45	// Missing feature tests
duke@435	46	virtual bool supports_native() { return true; }
duke@435	47	virtual bool supports_osr () { return true; }
twisti@2047	48	#if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK))
duke@435	49	virtual bool is_c1 () { return false; }
duke@435	50	virtual bool is_c2 () { return false; }
twisti@2047	51	virtual bool is_shark() { return false; }
duke@435	52	#else
duke@435	53	#ifdef COMPILER1
duke@435	54	bool is_c1 () { return true; }
duke@435	55	bool is_c2 () { return false; }
twisti@2047	56	bool is_shark() { return false; }
duke@435	57	#endif // COMPILER1
duke@435	58	#ifdef COMPILER2
duke@435	59	bool is_c1 () { return false; }
duke@435	60	bool is_c2 () { return true; }
twisti@2047	61	bool is_shark() { return false; }
duke@435	62	#endif // COMPILER2
twisti@2047	63	#ifdef SHARK
twisti@2047	64	bool is_c1 () { return false; }
twisti@2047	65	bool is_c2 () { return false; }
twisti@2047	66	bool is_shark() { return true; }
twisti@2047	67	#endif // SHARK
duke@435	68	#endif // TIERED
duke@435	69
duke@435	70	// Customization
duke@435	71	virtual bool needs_stubs () = 0;
duke@435	72
duke@435	73	void mark_initialized() { _is_initialized = true; }
duke@435	74	bool is_initialized() { return _is_initialized; }
duke@435	75
duke@435	76	virtual void initialize() = 0;
duke@435	77
duke@435	78	// Compilation entry point for methods
duke@435	79	virtual void compile_method(ciEnv* env,
duke@435	80	ciMethod* target,
duke@435	81	int entry_bci) {
duke@435	82	ShouldNotReachHere();
duke@435	83	}
duke@435	84
duke@435	85
duke@435	86	// Print compilation timers and statistics
duke@435	87	virtual void print_timers() {
duke@435	88	ShouldNotReachHere();
duke@435	89	}
duke@435	90	};