1 //===-- WindowsMiniDump.cpp -------------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // This function is separated out from ObjectFilePECOFF.cpp to name avoid name
11 // collisions with WinAPI preprocessor macros.
12 
13 #include "WindowsMiniDump.h"
14 #include "lldb/Host/FileSpec.h"
15 #include "llvm/Support/ConvertUTF.h"
16 
17 #ifdef _WIN32
18 #include "lldb/Host/windows/windows.h"
19 #include <DbgHelp.h> // for MiniDumpWriteDump
20 #endif
21 
22 namespace lldb_private {
23 
24 bool SaveMiniDump(const lldb::ProcessSP &process_sp,
25                   const lldb_private::FileSpec &outfile,
26                   lldb_private::Error &error) {
27   if (!process_sp)
28     return false;
29 #ifdef _WIN32
30   HANDLE process_handle = ::OpenProcess(
31       PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, process_sp->GetID());
32   const std::string file_name = outfile.GetCString();
33   std::wstring wide_name;
34   wide_name.resize(file_name.size() + 1);
35   char *result_ptr = reinterpret_cast<char *>(&wide_name[0]);
36   const llvm::UTF8 *error_ptr = nullptr;
37   if (!llvm::ConvertUTF8toWide(sizeof(wchar_t), file_name, result_ptr,
38                                error_ptr)) {
39     error.SetErrorString("cannot convert file name");
40     return false;
41   }
42   HANDLE file_handle =
43       ::CreateFileW(wide_name.c_str(), GENERIC_WRITE, FILE_SHARE_READ, NULL,
44                     CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
45   const auto result =
46       ::MiniDumpWriteDump(process_handle, process_sp->GetID(), file_handle,
47                           MiniDumpWithFullMemoryInfo, NULL, NULL, NULL);
48   ::CloseHandle(file_handle);
49   ::CloseHandle(process_handle);
50   if (!result) {
51     error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
52     return false;
53   }
54   return true;
55 #endif
56   return false;
57 }
58 
59 } // namesapce lldb_private
60