1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/code/jvmticmlr.h Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,115 @@
1.4 +/*
1.5 + * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +/*
1.30 + * This header file defines the data structures sent by the VM
1.31 + * through the JVMTI CompiledMethodLoad callback function via the
1.32 + * "void * compile_info" parameter. The memory pointed to by the
1.33 + * compile_info parameter may not be referenced after returning from
1.34 + * the CompiledMethodLoad callback. These are VM implementation
1.35 + * specific data structures that may evolve in future releases. A
1.36 + * JVMTI agent should interpret a non-NULL compile_info as a pointer
1.37 + * to a region of memory containing a list of records. In a typical
1.38 + * usage scenario, a JVMTI agent would cast each record to a
1.39 + * jvmtiCompiledMethodLoadRecordHeader, a struct that represents
1.40 + * arbitrary information. This struct contains a kind field to indicate
1.41 + * the kind of information being passed, and a pointer to the next
1.42 + * record. If the kind field indicates inlining information, then the
1.43 + * agent would cast the record to a jvmtiCompiledMethodLoadInlineRecord.
1.44 + * This record contains an array of PCStackInfo structs, which indicate
1.45 + * for every pc address what are the methods on the invocation stack.
1.46 + * The "methods" and "bcis" fields in each PCStackInfo struct specify a
1.47 + * 1-1 mapping between these inlined methods and their bytecode indices.
1.48 + * This can be used to derive the proper source lines of the inlined
1.49 + * methods.
1.50 + */
1.51 +
1.52 +#ifndef _JVMTI_CMLR_H_
1.53 +#define _JVMTI_CMLR_H_
1.54 +
1.55 +enum {
1.56 + JVMTI_CMLR_MAJOR_VERSION_1 = 0x00000001,
1.57 + JVMTI_CMLR_MINOR_VERSION_0 = 0x00000000,
1.58 +
1.59 + JVMTI_CMLR_MAJOR_VERSION = 0x00000001,
1.60 + JVMTI_CMLR_MINOR_VERSION = 0x00000000
1.61 +
1.62 + /*
1.63 + * This comment is for the "JDK import from HotSpot" sanity check:
1.64 + * version: 1.0.0
1.65 + */
1.66 +};
1.67 +
1.68 +typedef enum {
1.69 + JVMTI_CMLR_DUMMY = 1,
1.70 + JVMTI_CMLR_INLINE_INFO = 2
1.71 +} jvmtiCMLRKind;
1.72 +
1.73 +/*
1.74 + * Record that represents arbitrary information passed through JVMTI
1.75 + * CompiledMethodLoadEvent void pointer.
1.76 + */
1.77 +typedef struct _jvmtiCompiledMethodLoadRecordHeader {
1.78 + jvmtiCMLRKind kind; /* id for the kind of info passed in the record */
1.79 + jint majorinfoversion; /* major and minor info version values. Init'ed */
1.80 + jint minorinfoversion; /* to current version value in jvmtiExport.cpp. */
1.81 +
1.82 + struct _jvmtiCompiledMethodLoadRecordHeader* next;
1.83 +} jvmtiCompiledMethodLoadRecordHeader;
1.84 +
1.85 +/*
1.86 + * Record that gives information about the methods on the compile-time
1.87 + * stack at a specific pc address of a compiled method. Each element in
1.88 + * the methods array maps to same element in the bcis array.
1.89 + */
1.90 +typedef struct _PCStackInfo {
1.91 + void* pc; /* the pc address for this compiled method */
1.92 + jint numstackframes; /* number of methods on the stack */
1.93 + jmethodID* methods; /* array of numstackframes method ids */
1.94 + jint* bcis; /* array of numstackframes bytecode indices */
1.95 +} PCStackInfo;
1.96 +
1.97 +/*
1.98 + * Record that contains inlining information for each pc address of
1.99 + * an nmethod.
1.100 + */
1.101 +typedef struct _jvmtiCompiledMethodLoadInlineRecord {
1.102 + jvmtiCompiledMethodLoadRecordHeader header; /* common header for casting */
1.103 + jint numpcs; /* number of pc descriptors in this nmethod */
1.104 + PCStackInfo* pcinfo; /* array of numpcs pc descriptors */
1.105 +} jvmtiCompiledMethodLoadInlineRecord;
1.106 +
1.107 +/*
1.108 + * Dummy record used to test that we can pass records with different
1.109 + * information through the void pointer provided that they can be cast
1.110 + * to a jvmtiCompiledMethodLoadRecordHeader.
1.111 + */
1.112 +
1.113 +typedef struct _jvmtiCompiledMethodLoadDummyRecord {
1.114 + jvmtiCompiledMethodLoadRecordHeader header; /* common header for casting */
1.115 + char message[50];
1.116 +} jvmtiCompiledMethodLoadDummyRecord;
1.117 +
1.118 +#endif
