--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.hotspot.agent/linux/native/libsaproc/libproc.h	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2003, 2015, 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.
+ *
+ * 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.
+ *
+ */
+
+#ifndef _LIBPROC_H_
+#define _LIBPROC_H_
+
+#include <jni.h>
+#include <unistd.h>
+#include <stdint.h>
+#include "proc_service.h"
+
+#ifdef ALT_SASRCDIR
+#include "libproc_md.h"
+#endif
+
+#include <sys/ptrace.h>
+
+/************************************************************************************
+
+0. This is very minimal subset of Solaris libproc just enough for current application.
+Please note that the bulk of the functionality is from proc_service interface. This
+adds Pgrab__ and some missing stuff. We hide the difference b/w live process and core
+file by this interface.
+
+1. pthread_id unique in both NPTL & LinuxThreads. We store this in
+OSThread::_pthread_id in JVM code.
+
+2. All threads see the same pid when they call getpid() under NPTL.
+Threads receive different pid under LinuxThreads. We used to save the result of
+::getpid() call in OSThread::_thread_id. This way uniqueness of OSThread::_thread_id
+was lost under NPTL. Now, we store the result of ::gettid() call in
+OSThread::_thread_id. Because gettid returns actual pid of thread (lwp id), this is
+unique again. We therefore use OSThread::_thread_id as unique identifier.
+
+3. There is a unique LWP id under both thread libraries. libthread_db  maps pthread_id
+to its underlying lwp_id under both the thread libraries. thread_info.lwp_id stores
+lwp_id of the thread. The lwp id is nothing but the actual pid of clone'd processes. But
+unfortunately libthread_db does not work very well for core dumps. So, we get pthread_id
+only for processes. For core dumps, we don't use libthread_db at all (like gdb).
+
+4. ptrace operates on this LWP id under both the thread libraries. When we say 'pid' for
+ptrace call, we refer to lwp_id of the thread.
+
+5. for core file, we parse ELF files and read data from them. For processes we  use
+combination of ptrace and /proc calls.
+
+*************************************************************************************/
+
+
+#if defined(sparc) || defined(sparcv9) || defined(ppc64) || defined(ppc64le)
+#include <asm/ptrace.h>
+#define user_regs_struct  pt_regs
+#endif
+#if defined(aarch64) || defined(arm64)
+#include <asm/ptrace.h>
+#define user_regs_struct user_pt_regs
+#elif defined(arm)
+#include <asm/ptrace.h>
+#define user_regs_struct  pt_regs
+#endif
+#if defined(s390x)
+#include <asm/ptrace.h>
+#endif
+
+// This C bool type must be int for compatibility with Linux calls and
+// it would be a mistake to equivalence it to C++ bool on many platforms
+
+typedef int bool;
+#define true  1
+#define false 0
+
+struct ps_prochandle;
+
+// attach to a process
+struct ps_prochandle* Pgrab(pid_t pid, char* err_buf, size_t err_buf_len);
+
+// attach to a core dump
+struct ps_prochandle* Pgrab_core(const char* execfile, const char* corefile);
+
+// release a process or core
+void Prelease(struct ps_prochandle* ph);
+
+// functions not directly available in Solaris libproc
+
+// initialize libproc (call this only once per app)
+// pass true to make library verbose
+bool init_libproc(bool verbose);
+
+// get number of threads
+int get_num_threads(struct ps_prochandle* ph);
+
+// get lwp_id of n'th thread
+lwpid_t get_lwp_id(struct ps_prochandle* ph, int index);
+
+// get regs for a given lwp
+bool get_lwp_regs(struct ps_prochandle* ph, lwpid_t lid, struct user_regs_struct* regs);
+
+// get number of shared objects
+int get_num_libs(struct ps_prochandle* ph);
+
+// get name of n'th lib
+const char* get_lib_name(struct ps_prochandle* ph, int index);
+
+// get base of lib
+uintptr_t get_lib_base(struct ps_prochandle* ph, int index);
+
+// returns true if given library is found in lib list
+bool find_lib(struct ps_prochandle* ph, const char *lib_name);
+
+// symbol lookup
+uintptr_t lookup_symbol(struct ps_prochandle* ph,  const char* object_name,
+                       const char* sym_name);
+
+// address->nearest symbol lookup. return NULL for no symbol
+const char* symbol_for_pc(struct ps_prochandle* ph, uintptr_t addr, uintptr_t* poffset);
+
+struct ps_prochandle* get_proc_handle(JNIEnv* env, jobject this_obj);
+
+void throw_new_debugger_exception(JNIEnv* env, const char* errMsg);
+
+#endif //__LIBPROC_H_