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ca7046dc19
Create minidump when server fails to shutdown. If process is being debugged, cause a debug break. Moves some code which is part of safe_kill into mysys, as both safe_kill, and mysqltest produce minidumps on different timeouts. Small cleanup in wait_until_dead() - replace inefficient loop with a single wait.
115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
/* Copyright (c) 2021, MariaDB Corporation
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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#include <windows.h>
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#include <dbghelp.h>
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#include <stdio.h>
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#include <my_minidump.h>
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#define VERBOSE(fmt,...) \
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if (verbose) { fprintf(stderr, "my_create_minidump : " fmt,__VA_ARGS__); }
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extern "C" BOOL my_create_minidump(DWORD pid, BOOL verbose)
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{
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HANDLE file = 0;
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HANDLE process= 0;
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DWORD size= MAX_PATH;
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char path[MAX_PATH];
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char working_dir[MAX_PATH];
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char tmpname[MAX_PATH];
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char *filename= 0;
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bool ret= FALSE;
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process= OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pid);
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if (!process)
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{
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VERBOSE("cannot open process pid=%lu to create dump, last error %lu\n",
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pid, GetLastError());
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goto exit;
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}
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if (QueryFullProcessImageName(process, 0, path, &size) == 0)
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{
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VERBOSE("cannot read process path for pid %lu, last error %lu\n",
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pid, GetLastError());
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goto exit;
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}
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filename= strrchr(path, '\\');
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if (filename)
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{
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filename++;
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// We are not interested in dump of some proceses (my_safe_process.exe,cmd.exe)
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// since they are only used to start up other programs.
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// We're interested however in their children;
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const char *exclude_programs[] = {"my_safe_process.exe","cmd.exe", 0};
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for(size_t i=0; exclude_programs[i]; i++)
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if (_stricmp(filename, exclude_programs[i]) == 0)
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goto exit;
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}
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else
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filename= path;
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// Add .dmp extension
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char *p;
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if ((p= strrchr(filename, '.')) == 0)
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p= filename + strlen(filename);
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strncpy(p, ".dmp", path + MAX_PATH - p);
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// Íf file with this name exist, generate unique name with .dmp extension
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if (GetFileAttributes(filename) != INVALID_FILE_ATTRIBUTES)
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{
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if (!GetTempFileName(".", filename, 0, tmpname))
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{
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fprintf(stderr, "GetTempFileName failed, last error %lu", GetLastError());
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goto exit;
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}
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strncat_s(tmpname, ".dmp", sizeof(tmpname));
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filename= tmpname;
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}
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if (!GetCurrentDirectory(MAX_PATH, working_dir))
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{
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VERBOSE("GetCurrentDirectory failed, last error %lu", GetLastError());
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goto exit;
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}
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file= CreateFile(filename, GENERIC_READ | GENERIC_WRITE,
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0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
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if (file == INVALID_HANDLE_VALUE)
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{
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VERBOSE("CreateFile() failed for file %s, working dir %s, last error = %lu\n",
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filename, working_dir, GetLastError());
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goto exit;
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}
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if (!MiniDumpWriteDump(process, pid, file, MiniDumpNormal, 0, 0, 0))
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{
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VERBOSE("Failed to write minidump to %s, working dir %s, last error %lu\n",
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filename, working_dir, GetLastError());
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goto exit;
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}
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VERBOSE("Minidump written to %s, directory %s\n", filename, working_dir);
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ret= TRUE;
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exit:
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if (process != 0 && process != INVALID_HANDLE_VALUE)
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CloseHandle(process);
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if (file != 0 && file != INVALID_HANDLE_VALUE)
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CloseHandle(file);
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return ret;
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}
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