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// Copyright (c) 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CLIENT_WINDOWS_CRASH_GENERATION_MINIDUMP_GENERATION_H__
#define CLIENT_WINDOWS_CRASH_GENERATION_MINIDUMP_GENERATION_H__
#include <windows.h>
#include <dbghelp.h>
#include <list>
#include "google_breakpad/common/minidump_format.h"
namespace google_breakpad {
// Abstraction for various objects and operations needed to generate
// minidump on Windows. This abstraction is useful to hide all the gory
// details for minidump generation and provide a clean interface to
// the clients to generate minidumps.
class MinidumpGenerator {
public:
// Creates an instance with the given dump path.
explicit MinidumpGenerator(const std::wstring& dump_path);
~MinidumpGenerator();
// Writes the minidump with the given parameters. Stores the
// dump file path in the dump_path parameter if dump generation
// succeeds.
bool WriteMinidump(HANDLE process_handle,
DWORD process_id,
DWORD thread_id,
DWORD requesting_thread_id,
EXCEPTION_POINTERS* exception_pointers,
MDRawAssertionInfo* assert_info,
MINIDUMP_TYPE dump_type,
bool is_client_pointers,
std::wstring* dump_path);
private:
// Function pointer type for MiniDumpWriteDump, which is looked up
// dynamically.
typedef BOOL (WINAPI* MiniDumpWriteDumpType)(
HANDLE hProcess,
DWORD ProcessId,
HANDLE hFile,
MINIDUMP_TYPE DumpType,
CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam);
// Function pointer type for UuidCreate, which is looked up dynamically.
typedef RPC_STATUS (RPC_ENTRY* UuidCreateType)(UUID* Uuid);
// Loads the appropriate DLL lazily in a thread safe way.
HMODULE GetDbghelpModule();
// Loads the appropriate DLL and gets a pointer to the MiniDumpWriteDump
// function lazily and in a thread-safe manner.
MiniDumpWriteDumpType GetWriteDump();
// Loads the appropriate DLL lazily in a thread safe way.
HMODULE GetRpcrt4Module();
// Loads the appropriate DLL and gets a pointer to the UuidCreate
// function lazily and in a thread-safe manner.
UuidCreateType GetCreateUuid();
// Returns the path for the file to write dump to.
bool GenerateDumpFilePath(std::wstring* file_path);
// Handle to dynamically loaded DbgHelp.dll.
HMODULE dbghelp_module_;
// Pointer to the MiniDumpWriteDump function.
MiniDumpWriteDumpType write_dump_;
// Handle to dynamically loaded rpcrt4.dll.
HMODULE rpcrt4_module_;
// Pointer to the UuidCreate function.
UuidCreateType create_uuid_;
// Folder path to store dump files.
std::wstring dump_path_;
// Critical section to sychronize action of loading modules dynamically.
CRITICAL_SECTION module_load_sync_;
// Critical section to synchronize action of dynamically getting function
// addresses from modules.
CRITICAL_SECTION get_proc_address_sync_;
};
} // namespace google_breakpad
#endif // CLIENT_WINDOWS_CRASH_GENERATION_MINIDUMP_GENERATION_H__
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