mirror of
https://github.com/MariaDB/server.git
synced 2025-10-31 10:56:12 +01:00
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.
146 lines
3.5 KiB
C++
146 lines
3.5 KiB
C++
/* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; version 2 of the License.
|
|
|
|
This program 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 for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
|
|
|
|
|
|
/*
|
|
Utility program used to signal a safe_process it's time to shutdown
|
|
|
|
Usage:
|
|
safe_kill <pid>
|
|
*/
|
|
|
|
#include <windows.h>
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <psapi.h>
|
|
#include <my_minidump.h>
|
|
|
|
#include <tlhelp32.h>
|
|
#include <vector>
|
|
|
|
|
|
static std::vector<DWORD> find_children(DWORD pid)
|
|
{
|
|
HANDLE h= NULL;
|
|
PROCESSENTRY32 pe={ 0 };
|
|
std::vector<DWORD> children;
|
|
|
|
pe.dwSize = sizeof(PROCESSENTRY32);
|
|
h = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
|
|
if(h == INVALID_HANDLE_VALUE)
|
|
return children;
|
|
|
|
for (BOOL ret = Process32First(h, &pe); ret; ret = Process32Next(h, &pe))
|
|
{
|
|
if (pe.th32ParentProcessID == pid)
|
|
children.push_back(pe.th32ProcessID);
|
|
}
|
|
CloseHandle(h);
|
|
return children;
|
|
}
|
|
|
|
|
|
static int create_dump(DWORD pid, int recursion_depth= 5)
|
|
{
|
|
if (recursion_depth < 0)
|
|
return 0;
|
|
|
|
my_create_minidump(pid, TRUE);
|
|
std::vector<DWORD> children= find_children(pid);
|
|
for(size_t i=0; i < children.size(); i++)
|
|
create_dump(children[i], recursion_depth -1);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int main(int argc, const char** argv )
|
|
{
|
|
DWORD pid= -1;
|
|
HANDLE shutdown_event;
|
|
char safe_process_name[32]= {0};
|
|
int retry_open_event= 2;
|
|
/* Ignore any signals */
|
|
signal(SIGINT, SIG_IGN);
|
|
signal(SIGBREAK, SIG_IGN);
|
|
signal(SIGTERM, SIG_IGN);
|
|
|
|
if ((argc != 2 && argc != 3) || (argc == 3 && strcmp(argv[2],"dump"))) {
|
|
fprintf(stderr, "safe_kill <pid> [dump]\n");
|
|
exit(2);
|
|
}
|
|
pid= atoi(argv[1]);
|
|
|
|
if (argc == 3)
|
|
{
|
|
return create_dump(pid);
|
|
}
|
|
_snprintf(safe_process_name, sizeof(safe_process_name),
|
|
"safe_process[%d]", pid);
|
|
|
|
/* Open the event to signal */
|
|
while ((shutdown_event=
|
|
OpenEvent(EVENT_MODIFY_STATE, FALSE, safe_process_name)) == NULL)
|
|
{
|
|
/*
|
|
Check if the process is alive, otherwise there is really
|
|
no sense to retry the open of the event
|
|
*/
|
|
HANDLE process;
|
|
DWORD exit_code;
|
|
process= OpenProcess(SYNCHRONIZE| PROCESS_QUERY_INFORMATION, FALSE, pid);
|
|
if (!process)
|
|
{
|
|
/* Already died */
|
|
exit(1);
|
|
}
|
|
|
|
if (!GetExitCodeProcess(process,&exit_code))
|
|
{
|
|
fprintf(stderr, "GetExitCodeProcess failed, pid= %lu, err= %lu\n",
|
|
pid, GetLastError());
|
|
exit(1);
|
|
}
|
|
|
|
if (exit_code != STILL_ACTIVE)
|
|
{
|
|
/* Already died */
|
|
CloseHandle(process);
|
|
exit(2);
|
|
}
|
|
|
|
CloseHandle(process);
|
|
|
|
if (retry_open_event--)
|
|
Sleep(100);
|
|
else
|
|
{
|
|
fprintf(stderr, "Failed to open shutdown_event '%s', error: %lu\n",
|
|
safe_process_name, GetLastError());
|
|
exit(3);
|
|
}
|
|
}
|
|
|
|
if(SetEvent(shutdown_event) == 0)
|
|
{
|
|
fprintf(stderr, "Failed to signal shutdown_event '%s', error: %lu\n",
|
|
safe_process_name, GetLastError());
|
|
CloseHandle(shutdown_event);
|
|
exit(4);
|
|
}
|
|
CloseHandle(shutdown_event);
|
|
exit(0);
|
|
}
|
|
|