/*

 * Copyright (c) 2017, 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 OS_WINDOWS_VM_DBGHELPLOADER_HPP

#define OS_WINDOWS_VM_DBGHELPLOADER_HPP

#include <windows.h>

#include <imagehlp.h>

// This is a very plain wrapper for loading dbghelp.dll. It does not offer

//  any additional functionality. It takes care of locking.

class outputStream;

// Please note: dbghelp.dll may not have been loaded, or it may have been loaded but not

//  all functions may be available (because on the target system dbghelp.dll is of an

//  older version).

// In all these cases we return an error from the WindowsDbgHelp::symXXXX() wrapper. We never

//  assert. It should always be safe to call these functions, but caller has to process the

//  return code (which he would have to do anyway).

namespace WindowsDbgHelp {

  DWORD symSetOptions(DWORD);

  DWORD symGetOptions(void);

  BOOL symInitialize(HANDLE, PCTSTR, BOOL);

  BOOL symGetSymFromAddr64(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);

  DWORD unDecorateSymbolName(const char*, char*, DWORD, DWORD);

  BOOL symSetSearchPath(HANDLE, PCTSTR);

  BOOL symGetSearchPath(HANDLE, PTSTR, int);

  BOOL stackWalk64(DWORD MachineType,

                   HANDLE hProcess,

                   HANDLE hThread,

                   LPSTACKFRAME64 StackFrame,

                   PVOID ContextRecord);

  PVOID symFunctionTableAccess64(HANDLE hProcess, DWORD64 AddrBase);

  DWORD64 symGetModuleBase64(HANDLE hProcess, DWORD64 dwAddr);

  BOOL miniDumpWriteDump(HANDLE hProcess, DWORD ProcessId, HANDLE hFile,

                         MINIDUMP_TYPE DumpType, PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,

                         PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,

                         PMINIDUMP_CALLBACK_INFORMATION CallbackParam);

  BOOL symGetLineFromAddr64 (HANDLE hProcess, DWORD64 dwAddr,

                             PDWORD pdwDisplacement, PIMAGEHLP_LINE64 Line);

  // Print one liner describing state (if library loaded, which functions are

  // missing - if any, and the dbhelp API version)

  void print_state_on(outputStream* st);

};

#endif // OS_WINDOWS_VM_DBGHELPLOADER_HPP