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/* 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);
}
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