summaryrefslogtreecommitdiff
path: root/staging/linux-x86/include/jvmticmlr.h
diff options
context:
space:
mode:
Diffstat (limited to 'staging/linux-x86/include/jvmticmlr.h')
-rw-r--r--staging/linux-x86/include/jvmticmlr.h115
1 files changed, 115 insertions, 0 deletions
diff --git a/staging/linux-x86/include/jvmticmlr.h b/staging/linux-x86/include/jvmticmlr.h
new file mode 100644
index 0000000..c2106d3
--- /dev/null
+++ b/staging/linux-x86/include/jvmticmlr.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This header file defines the data structures sent by the VM
+ * through the JVMTI CompiledMethodLoad callback function via the
+ * "void * compile_info" parameter. The memory pointed to by the
+ * compile_info parameter may not be referenced after returning from
+ * the CompiledMethodLoad callback. These are VM implementation
+ * specific data structures that may evolve in future releases. A
+ * JVMTI agent should interpret a non-NULL compile_info as a pointer
+ * to a region of memory containing a list of records. In a typical
+ * usage scenario, a JVMTI agent would cast each record to a
+ * jvmtiCompiledMethodLoadRecordHeader, a struct that represents
+ * arbitrary information. This struct contains a kind field to indicate
+ * the kind of information being passed, and a pointer to the next
+ * record. If the kind field indicates inlining information, then the
+ * agent would cast the record to a jvmtiCompiledMethodLoadInlineRecord.
+ * This record contains an array of PCStackInfo structs, which indicate
+ * for every pc address what are the methods on the invocation stack.
+ * The "methods" and "bcis" fields in each PCStackInfo struct specify a
+ * 1-1 mapping between these inlined methods and their bytecode indices.
+ * This can be used to derive the proper source lines of the inlined
+ * methods.
+ */
+
+#ifndef _JVMTI_CMLR_H_
+#define _JVMTI_CMLR_H_
+
+enum {
+ JVMTI_CMLR_MAJOR_VERSION_1 = 0x00000001,
+ JVMTI_CMLR_MINOR_VERSION_0 = 0x00000000,
+
+ JVMTI_CMLR_MAJOR_VERSION = 0x00000001,
+ JVMTI_CMLR_MINOR_VERSION = 0x00000000
+
+ /*
+ * This comment is for the "JDK import from HotSpot" sanity check:
+ * version: 1.0.0
+ */
+};
+
+typedef enum {
+ JVMTI_CMLR_DUMMY = 1,
+ JVMTI_CMLR_INLINE_INFO = 2
+} jvmtiCMLRKind;
+
+/*
+ * Record that represents arbitrary information passed through JVMTI
+ * CompiledMethodLoadEvent void pointer.
+ */
+typedef struct _jvmtiCompiledMethodLoadRecordHeader {
+ jvmtiCMLRKind kind; /* id for the kind of info passed in the record */
+ jint majorinfoversion; /* major and minor info version values. Init'ed */
+ jint minorinfoversion; /* to current version value in jvmtiExport.cpp. */
+
+ struct _jvmtiCompiledMethodLoadRecordHeader* next;
+} jvmtiCompiledMethodLoadRecordHeader;
+
+/*
+ * Record that gives information about the methods on the compile-time
+ * stack at a specific pc address of a compiled method. Each element in
+ * the methods array maps to same element in the bcis array.
+ */
+typedef struct _PCStackInfo {
+ void* pc; /* the pc address for this compiled method */
+ jint numstackframes; /* number of methods on the stack */
+ jmethodID* methods; /* array of numstackframes method ids */
+ jint* bcis; /* array of numstackframes bytecode indices */
+} PCStackInfo;
+
+/*
+ * Record that contains inlining information for each pc address of
+ * an nmethod.
+ */
+typedef struct _jvmtiCompiledMethodLoadInlineRecord {
+ jvmtiCompiledMethodLoadRecordHeader header; /* common header for casting */
+ jint numpcs; /* number of pc descriptors in this nmethod */
+ PCStackInfo* pcinfo; /* array of numpcs pc descriptors */
+} jvmtiCompiledMethodLoadInlineRecord;
+
+/*
+ * Dummy record used to test that we can pass records with different
+ * information through the void pointer provided that they can be cast
+ * to a jvmtiCompiledMethodLoadRecordHeader.
+ */
+
+typedef struct _jvmtiCompiledMethodLoadDummyRecord {
+ jvmtiCompiledMethodLoadRecordHeader header; /* common header for casting */
+ char message[50];
+} jvmtiCompiledMethodLoadDummyRecord;
+
+#endif