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src/share/vm/code/jvmticmlr.h@ac27a9c85bea (annotated)

src/share/vm/code/jvmticmlr.h

Thu, 24 May 2018 18:41:44 +0800

author

aoqi

date

Thu, 24 May 2018 18:41:44 +0800

changeset 8856

ac27a9c85bea

parent 6876

710a3c8b516e

permissions

-rw-r--r--

Merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2010, 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. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	/*
aoqi@0	27	* This header file defines the data structures sent by the VM
aoqi@0	28	* through the JVMTI CompiledMethodLoad callback function via the
aoqi@0	29	* "void * compile_info" parameter. The memory pointed to by the
aoqi@0	30	* compile_info parameter may not be referenced after returning from
aoqi@0	31	* the CompiledMethodLoad callback. These are VM implementation
aoqi@0	32	* specific data structures that may evolve in future releases. A
aoqi@0	33	* JVMTI agent should interpret a non-NULL compile_info as a pointer
aoqi@0	34	* to a region of memory containing a list of records. In a typical
aoqi@0	35	* usage scenario, a JVMTI agent would cast each record to a
aoqi@0	36	* jvmtiCompiledMethodLoadRecordHeader, a struct that represents
aoqi@0	37	* arbitrary information. This struct contains a kind field to indicate
aoqi@0	38	* the kind of information being passed, and a pointer to the next
aoqi@0	39	* record. If the kind field indicates inlining information, then the
aoqi@0	40	* agent would cast the record to a jvmtiCompiledMethodLoadInlineRecord.
aoqi@0	41	* This record contains an array of PCStackInfo structs, which indicate
aoqi@0	42	* for every pc address what are the methods on the invocation stack.
aoqi@0	43	* The "methods" and "bcis" fields in each PCStackInfo struct specify a
aoqi@0	44	* 1-1 mapping between these inlined methods and their bytecode indices.
aoqi@0	45	* This can be used to derive the proper source lines of the inlined
aoqi@0	46	* methods.
aoqi@0	47	*/
aoqi@0	48
aoqi@0	49	#ifndef _JVMTI_CMLR_H_
aoqi@0	50	#define _JVMTI_CMLR_H_
aoqi@0	51
aoqi@0	52	enum {
aoqi@0	53	JVMTI_CMLR_MAJOR_VERSION_1 = 0x00000001,
aoqi@0	54	JVMTI_CMLR_MINOR_VERSION_0 = 0x00000000,
aoqi@0	55
aoqi@0	56	JVMTI_CMLR_MAJOR_VERSION = 0x00000001,
aoqi@0	57	JVMTI_CMLR_MINOR_VERSION = 0x00000000
aoqi@0	58
aoqi@0	59	/*
aoqi@0	60	* This comment is for the "JDK import from HotSpot" sanity check:
aoqi@0	61	* version: 1.0.0
aoqi@0	62	*/
aoqi@0	63	};
aoqi@0	64
aoqi@0	65	typedef enum {
aoqi@0	66	JVMTI_CMLR_DUMMY = 1,
aoqi@0	67	JVMTI_CMLR_INLINE_INFO = 2
aoqi@0	68	} jvmtiCMLRKind;
aoqi@0	69
aoqi@0	70	/*
aoqi@0	71	* Record that represents arbitrary information passed through JVMTI
aoqi@0	72	* CompiledMethodLoadEvent void pointer.
aoqi@0	73	*/
aoqi@0	74	typedef struct _jvmtiCompiledMethodLoadRecordHeader {
aoqi@0	75	jvmtiCMLRKind kind; /* id for the kind of info passed in the record */
aoqi@0	76	jint majorinfoversion; /* major and minor info version values. Init'ed */
aoqi@0	77	jint minorinfoversion; /* to current version value in jvmtiExport.cpp. */
aoqi@0	78
aoqi@0	79	struct _jvmtiCompiledMethodLoadRecordHeader* next;
aoqi@0	80	} jvmtiCompiledMethodLoadRecordHeader;
aoqi@0	81
aoqi@0	82	/*
aoqi@0	83	* Record that gives information about the methods on the compile-time
aoqi@0	84	* stack at a specific pc address of a compiled method. Each element in
aoqi@0	85	* the methods array maps to same element in the bcis array.
aoqi@0	86	*/
aoqi@0	87	typedef struct _PCStackInfo {
aoqi@0	88	void* pc; /* the pc address for this compiled method */
aoqi@0	89	jint numstackframes; /* number of methods on the stack */
aoqi@0	90	jmethodID* methods; /* array of numstackframes method ids */
aoqi@0	91	jint* bcis; /* array of numstackframes bytecode indices */
aoqi@0	92	} PCStackInfo;
aoqi@0	93
aoqi@0	94	/*
aoqi@0	95	* Record that contains inlining information for each pc address of
aoqi@0	96	* an nmethod.
aoqi@0	97	*/
aoqi@0	98	typedef struct _jvmtiCompiledMethodLoadInlineRecord {
aoqi@0	99	jvmtiCompiledMethodLoadRecordHeader header; /* common header for casting */
aoqi@0	100	jint numpcs; /* number of pc descriptors in this nmethod */
aoqi@0	101	PCStackInfo* pcinfo; /* array of numpcs pc descriptors */
aoqi@0	102	} jvmtiCompiledMethodLoadInlineRecord;
aoqi@0	103
aoqi@0	104	/*
aoqi@0	105	* Dummy record used to test that we can pass records with different
aoqi@0	106	* information through the void pointer provided that they can be cast
aoqi@0	107	* to a jvmtiCompiledMethodLoadRecordHeader.
aoqi@0	108	*/
aoqi@0	109
aoqi@0	110	typedef struct _jvmtiCompiledMethodLoadDummyRecord {
aoqi@0	111	jvmtiCompiledMethodLoadRecordHeader header; /* common header for casting */
aoqi@0	112	char message[50];
aoqi@0	113	} jvmtiCompiledMethodLoadDummyRecord;
aoqi@0	114
aoqi@0	115	#endif