codekingpro/portable-devtools

1/*2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.4 *5 * This code is free software; you can redistribute it and/or modify it6 * under the terms of the GNU General Public License version 2 only, as7 * published by the Free Software Foundation.  Oracle designates this8 * particular file as subject to the "Classpath" exception as provided9 * by Oracle in the LICENSE file that accompanied this code.10 *11 * This code is distributed in the hope that it will be useful, but WITHOUT12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License14 * version 2 for more details (a copy is included in the LICENSE file that15 * accompanied this code).16 *17 * You should have received a copy of the GNU General Public License version18 * 2 along with this work; if not, write to the Free Software Foundation,19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.20 *21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA22 * or visit www.oracle.com if you need additional information or have any23 * questions.24 */25 26/*27 * This header file defines the data structures sent by the VM28 * through the JVMTI CompiledMethodLoad callback function via the29 * "void * compile_info" parameter. The memory pointed to by the30 * compile_info parameter may not be referenced after returning from31 * the CompiledMethodLoad callback. These are VM implementation32 * specific data structures that may evolve in future releases. A33 * JVMTI agent should interpret a non-NULL compile_info as a pointer34 * to a region of memory containing a list of records. In a typical35 * usage scenario, a JVMTI agent would cast each record to a36 * jvmtiCompiledMethodLoadRecordHeader, a struct that represents37 * arbitrary information. This struct contains a kind field to indicate38 * the kind of information being passed, and a pointer to the next39 * record. If the kind field indicates inlining information, then the40 * agent would cast the record to a jvmtiCompiledMethodLoadInlineRecord.41 * This record contains an array of PCStackInfo structs, which indicate42 * for every pc address what are the methods on the invocation stack.43 * The "methods" and "bcis" fields in each PCStackInfo struct specify a44 * 1-1 mapping between these inlined methods and their bytecode indices.45 * This can be used to derive the proper source lines of the inlined46 * methods.47 */48 49#ifndef _JVMTI_CMLR_H_50#define _JVMTI_CMLR_H_51 52enum {53    JVMTI_CMLR_MAJOR_VERSION_1 = 0x00000001,54    JVMTI_CMLR_MINOR_VERSION_0 = 0x00000000,55 56    JVMTI_CMLR_MAJOR_VERSION   = 0x00000001,57    JVMTI_CMLR_MINOR_VERSION   = 0x0000000058 59    /*60     * This comment is for the "JDK import from HotSpot" sanity check:61     * version: 1.0.062     */63};64 65typedef enum {66    JVMTI_CMLR_DUMMY       = 1,67    JVMTI_CMLR_INLINE_INFO = 268} jvmtiCMLRKind;69 70/*71 * Record that represents arbitrary information passed through JVMTI72 * CompiledMethodLoadEvent void pointer.73 */74typedef struct _jvmtiCompiledMethodLoadRecordHeader {75  jvmtiCMLRKind kind;     /* id for the kind of info passed in the record */76  jint majorinfoversion;  /* major and minor info version values. Init'ed */77  jint minorinfoversion;  /* to current version value in jvmtiExport.cpp. */78 79  struct _jvmtiCompiledMethodLoadRecordHeader* next;80} jvmtiCompiledMethodLoadRecordHeader;81 82/*83 * Record that gives information about the methods on the compile-time84 * stack at a specific pc address of a compiled method. Each element in85 * the methods array maps to same element in the bcis array.86 */87typedef struct _PCStackInfo {88  void* pc;             /* the pc address for this compiled method */89  jint numstackframes;  /* number of methods on the stack */90  jmethodID* methods;   /* array of numstackframes method ids */91  jint* bcis;           /* array of numstackframes bytecode indices */92} PCStackInfo;93 94/*95 * Record that contains inlining information for each pc address of96 * an nmethod.97 */98typedef struct _jvmtiCompiledMethodLoadInlineRecord {99  jvmtiCompiledMethodLoadRecordHeader header;  /* common header for casting */100  jint numpcs;          /* number of pc descriptors in this nmethod */101  PCStackInfo* pcinfo;  /* array of numpcs pc descriptors */102} jvmtiCompiledMethodLoadInlineRecord;103 104/*105 * Dummy record used to test that we can pass records with different106 * information through the void pointer provided that they can be cast107 * to a jvmtiCompiledMethodLoadRecordHeader.108 */109 110typedef struct _jvmtiCompiledMethodLoadDummyRecord {111  jvmtiCompiledMethodLoadRecordHeader header;  /* common header for casting */112  char message[50];113} jvmtiCompiledMethodLoadDummyRecord;114 115#endif116