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src/share/vm/runtime/compilationPolicy.hpp@873fd82b133d (annotated)

src/share/vm/runtime/compilationPolicy.hpp

Fri, 24 Jun 2016 17:12:13 +0800

author

aoqi<aoqi@loongson.cn>

date

Fri, 24 Jun 2016 17:12:13 +0800

changeset 25

873fd82b133d

parent 1

2d8a650513c2

child 26

ed5b982c0b0e

permissions

-rw-r--r--

[Code Reorganization] Removed GC related modifications made by Loongson, for example, UseOldNUMA.

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@1	25	/*
aoqi@1	26	* This file has been modified by Loongson Technology in 2015. These
aoqi@1	27	* modifications are Copyright (c) 2015 Loongson Technology, and are made
aoqi@1	28	* available on the same license terms set forth above.
aoqi@1	29	*/
aoqi@1	30
aoqi@0	31	#ifndef SHARE_VM_RUNTIME_COMPILATIONPOLICY_HPP
aoqi@0	32	#define SHARE_VM_RUNTIME_COMPILATIONPOLICY_HPP
aoqi@0	33
aoqi@0	34	#include "code/nmethod.hpp"
aoqi@0	35	#include "compiler/compileBroker.hpp"
aoqi@0	36	#include "memory/allocation.hpp"
aoqi@0	37	#include "runtime/vm_operations.hpp"
aoqi@0	38	#include "utilities/growableArray.hpp"
aoqi@0	39
aoqi@0	40	// The CompilationPolicy selects which method (if any) should be compiled.
aoqi@0	41	// It also decides which methods must always be compiled (i.e., are never
aoqi@0	42	// interpreted).
aoqi@0	43	class CompileTask;
aoqi@0	44	class CompileQueue;
aoqi@0	45
aoqi@0	46	class CompilationPolicy : public CHeapObj<mtCompiler> {
aoqi@0	47	static CompilationPolicy* _policy;
aoqi@0	48	// Accumulated time
aoqi@0	49	static elapsedTimer _accumulated_time;
aoqi@0	50
aoqi@0	51	static bool _in_vm_startup;
aoqi@0	52	public:
aoqi@0	53	static void set_in_vm_startup(bool in_vm_startup) { _in_vm_startup = in_vm_startup; }
aoqi@0	54	static void completed_vm_startup();
aoqi@0	55	static bool delay_compilation_during_startup() { return _in_vm_startup; }
aoqi@0	56
aoqi@0	57	// m must be compiled before executing it
aoqi@0	58	static bool must_be_compiled(methodHandle m, int comp_level = CompLevel_all);
aoqi@0	59	// m is allowed to be compiled
aoqi@0	60	static bool can_be_compiled(methodHandle m, int comp_level = CompLevel_all);
aoqi@0	61	// m is allowed to be osr compiled
aoqi@0	62	static bool can_be_osr_compiled(methodHandle m, int comp_level = CompLevel_all);
aoqi@0	63	static bool is_compilation_enabled();
aoqi@0	64	static void set_policy(CompilationPolicy* policy) { _policy = policy; }
aoqi@0	65	static CompilationPolicy* policy() { return _policy; }
aoqi@0	66
aoqi@0	67	// Profiling
aoqi@0	68	elapsedTimer* accumulated_time() { return &_accumulated_time; }
aoqi@0	69	void print_time() PRODUCT_RETURN;
aoqi@0	70	// Return initial compile level that is used with Xcomp
aoqi@0	71	virtual CompLevel initial_compile_level() = 0;
aoqi@0	72	virtual int compiler_count(CompLevel comp_level) = 0;
aoqi@0	73	// main notification entry, return a pointer to an nmethod if the OSR is required,
aoqi@0	74	// returns NULL otherwise.
aoqi@0	75	virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread) = 0;
aoqi@0	76	// safepoint() is called at the end of the safepoint
aoqi@0	77	virtual void do_safepoint_work() = 0;
aoqi@0	78	// reprofile request
aoqi@0	79	virtual void reprofile(ScopeDesc* trap_scope, bool is_osr) = 0;
aoqi@0	80	// delay_compilation(method) can be called by any component of the runtime to notify the policy
aoqi@0	81	// that it's recommended to delay the complation of this method.
aoqi@0	82	virtual void delay_compilation(Method* method) = 0;
aoqi@0	83	// disable_compilation() is called whenever the runtime decides to disable compilation of the
aoqi@0	84	// specified method.
aoqi@0	85	virtual void disable_compilation(Method* method) = 0;
aoqi@0	86	// Select task is called by CompileBroker. The queue is guaranteed to have at least one
aoqi@0	87	// element and is locked. The function should select one and return it.
aoqi@0	88	virtual CompileTask* select_task(CompileQueue* compile_queue) = 0;
aoqi@0	89	// Tell the runtime if we think a given method is adequately profiled.
aoqi@0	90	virtual bool is_mature(Method* method) = 0;
aoqi@0	91	// Do policy initialization
aoqi@0	92	virtual void initialize() = 0;
aoqi@0	93	virtual bool should_not_inline(ciEnv* env, ciMethod* method) { return false; }
aoqi@0	94	};
aoqi@0	95
aoqi@0	96	// A base class for baseline policies.
aoqi@0	97	class NonTieredCompPolicy : public CompilationPolicy {
aoqi@0	98	int _compiler_count;
aoqi@0	99	protected:
aoqi@0	100	static void trace_frequency_counter_overflow(methodHandle m, int branch_bci, int bci);
aoqi@0	101	static void trace_osr_request(methodHandle method, nmethod* osr, int bci);
aoqi@0	102	static void trace_osr_completion(nmethod* osr_nm);
aoqi@0	103	void reset_counter_for_invocation_event(methodHandle method);
aoqi@0	104	void reset_counter_for_back_branch_event(methodHandle method);
aoqi@0	105	public:
aoqi@0	106	NonTieredCompPolicy() : _compiler_count(0) { }
aoqi@0	107	virtual CompLevel initial_compile_level() { return CompLevel_highest_tier; }
aoqi@0	108	virtual int compiler_count(CompLevel comp_level);
aoqi@0	109	virtual void do_safepoint_work();
aoqi@0	110	virtual void reprofile(ScopeDesc* trap_scope, bool is_osr);
aoqi@0	111	virtual void delay_compilation(Method* method);
aoqi@0	112	virtual void disable_compilation(Method* method);
aoqi@0	113	virtual bool is_mature(Method* method);
aoqi@0	114	virtual void initialize();
aoqi@0	115	virtual CompileTask* select_task(CompileQueue* compile_queue);
aoqi@0	116	virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread);
aoqi@0	117	virtual void method_invocation_event(methodHandle m, JavaThread* thread) = 0;
aoqi@0	118	virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread) = 0;
aoqi@1	119	#ifdef MIPS64
aoqi@1	120	inline bool compare(CompileTask* task_x, CompileTask* task_y);
aoqi@1	121	inline void update_speed(jlong t, CompileTask* task);
aoqi@1	122	inline bool task_should_be_removed(jlong t, jlong timeout, CompileTask* task);
aoqi@1	123	#endif
aoqi@0	124	};
aoqi@0	125
aoqi@0	126	class SimpleCompPolicy : public NonTieredCompPolicy {
aoqi@0	127	public:
aoqi@0	128	virtual void method_invocation_event(methodHandle m, JavaThread* thread);
aoqi@0	129	virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread);
aoqi@0	130	};
aoqi@0	131
aoqi@0	132	// StackWalkCompPolicy - existing C2 policy
aoqi@0	133
aoqi@0	134	#ifdef COMPILER2
aoqi@0	135	class StackWalkCompPolicy : public NonTieredCompPolicy {
aoqi@0	136	public:
aoqi@0	137	virtual void method_invocation_event(methodHandle m, JavaThread* thread);
aoqi@0	138	virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread);
aoqi@0	139
aoqi@0	140	private:
aoqi@0	141	RFrame* findTopInlinableFrame(GrowableArray<RFrame*>* stack);
aoqi@0	142	RFrame* senderOf(RFrame* rf, GrowableArray<RFrame*>* stack);
aoqi@0	143
aoqi@0	144	// the following variables hold values computed by the last inlining decision
aoqi@0	145	// they are used for performance debugging only (print better messages)
aoqi@0	146	static const char* _msg; // reason for not inlining
aoqi@0	147
aoqi@0	148	static const char* shouldInline (methodHandle callee, float frequency, int cnt);
aoqi@0	149	// positive filter: should send be inlined? returns NULL (--> yes) or rejection msg
aoqi@0	150	static const char* shouldNotInline(methodHandle callee);
aoqi@0	151	// negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg
aoqi@0	152
aoqi@0	153	};
aoqi@0	154	#endif
aoqi@0	155
aoqi@0	156	#endif // SHARE_VM_RUNTIME_COMPILATIONPOLICY_HPP