• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/ci/ciCallProfile.hpp@f95d63e2154a (annotated)

src/share/vm/ci/ciCallProfile.hpp

Tue, 23 Nov 2010 13:22:55 -0800

author

stefank

date

Tue, 23 Nov 2010 13:22:55 -0800

changeset 2314

f95d63e2154a

parent 1907

c18cbe5936b8

child 2325

c760f78e0a53

permissions

-rw-r--r--

6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

duke@435	1	/*
stefank@2314	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
stefank@2314	25	#ifndef SHARE_VM_CI_CICALLPROFILE_HPP
stefank@2314	26	#define SHARE_VM_CI_CICALLPROFILE_HPP
stefank@2314	27
stefank@2314	28	#include "ci/ciClassList.hpp"
stefank@2314	29
duke@435	30	// ciCallProfile
duke@435	31	//
duke@435	32	// This class is used to determine the frequently called method
duke@435	33	// at some call site
duke@435	34	class ciCallProfile : StackObj {
duke@435	35	private:
duke@435	36	// Fields are initialized directly by ciMethod::call_profile_at_bci.
duke@435	37	friend class ciMethod;
duke@435	38
duke@435	39	enum { MorphismLimit = 2 }; // Max call site's morphism we care about
duke@435	40	int _limit; // number of receivers have been determined
duke@435	41	int _morphism; // determined call site's morphism
duke@435	42	int _count; // # times has this call been executed
duke@435	43	int _receiver_count[MorphismLimit + 1]; // # times receivers have been seen
duke@435	44	ciMethod* _method[MorphismLimit + 1]; // receivers methods
duke@435	45	ciKlass* _receiver[MorphismLimit + 1]; // receivers (exact)
duke@435	46
duke@435	47	ciCallProfile() {
duke@435	48	_limit = 0;
duke@435	49	_morphism = 0;
duke@435	50	_count = -1;
duke@435	51	_receiver_count[0] = -1;
duke@435	52	_method[0] = NULL;
duke@435	53	_receiver[0] = NULL;
duke@435	54	}
duke@435	55
duke@435	56	void add_receiver(ciKlass* receiver, int receiver_count);
duke@435	57
duke@435	58	public:
duke@435	59	// Note: The following predicates return false for invalid profiles:
duke@435	60	bool has_receiver(int i) { return _limit > i; }
duke@435	61	int morphism() { return _morphism; }
duke@435	62
duke@435	63	int count() { return _count; }
duke@435	64	int receiver_count(int i) {
duke@435	65	assert(i < _limit, "out of Call Profile MorphismLimit");
duke@435	66	return _receiver_count[i];
duke@435	67	}
duke@435	68	float receiver_prob(int i) {
duke@435	69	assert(i < _limit, "out of Call Profile MorphismLimit");
duke@435	70	return (float)_receiver_count[i]/(float)_count;
duke@435	71	}
duke@435	72	ciMethod* method(int i) {
duke@435	73	assert(i < _limit, "out of Call Profile MorphismLimit");
duke@435	74	return _method[i];
duke@435	75	}
duke@435	76	ciKlass* receiver(int i) {
duke@435	77	assert(i < _limit, "out of Call Profile MorphismLimit");
duke@435	78	return _receiver[i];
duke@435	79	}
duke@435	80	};
stefank@2314	81
stefank@2314	82	#endif // SHARE_VM_CI_CICALLPROFILE_HPP