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nssm/process.h

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Kill process tree when stopping service. Ensure that all child processes of the monitored application are killed when the service stops by recursing through all running processes and terminating those whose parent is the application or one of its descendents.
14 years ago
#ifndef PROCESS_H
#define PROCESS_H
#include <tlhelp32.h>
Try to kill the process tree gracefully. Before calling TerminateProcess() on all processes assocatiated with the monitored application, enumerate all windows and threads and post appropriate messages to them. If the application bothers to listen for such messages it has a chance to shut itself down gracefully. If the application ignores this chance to do the right thing it's fair game for termination.
14 years ago
typedef struct {
unsigned long pid;
unsigned long exitcode;
int signalled;
} kill_t;
Fixed crash when stopping the service. NSSM tidies up by looking for processes whose parent PID matches the PID of the monitored application. Because process IDs are reused, however, it's possible for NSSM to kill a process which was not a child of the monitored application if that process had a now-exited parent process whose PID was reused. On UNIX the PPID would show as 1 for an orphaned process but under Windows, at least when querying a process with the Toolhelp32 toolkit, we see the original PPID of the process even if the parent is no longer running. Thus it is not sufficient to compare parent PIDs when checking if a process was launched by our application. In the worst case scenario NSSM could even terminate itself and trigger a bluescreen. When we find process with matching PPID we now also check that it was created after our application was created and before our application exited.
12 years ago
int get_process_creation_time(HANDLE, FILETIME *);
int get_process_exit_time(HANDLE, FILETIME *);
Allow compiling as a Unicode application. Overhaul the entire codebase so that it compiles and runs as either a Unicode or ANSI application.
11 years ago
int check_parent(TCHAR *, PROCESSENTRY32 *, unsigned long, FILETIME *, FILETIME *);
Try to kill the process tree gracefully. Before calling TerminateProcess() on all processes assocatiated with the monitored application, enumerate all windows and threads and post appropriate messages to them. If the application bothers to listen for such messages it has a chance to shut itself down gracefully. If the application ignores this chance to do the right thing it's fair game for termination.
14 years ago
int CALLBACK kill_window(HWND, LPARAM);
Pass parameters around in a data structure. Instead of static variables and functions taking a dozen arguments we now use a single data structure, nssm_service_t, for the service. The code is easier to read and understand, especially when adding more variables through to functions.
11 years ago
int kill_threads(nssm_service_t *, kill_t *);
Send Control-C to the right window. We were always trying to send Control-C to the console of the parent process rather than any subprocesses found in kill_process_tree().
11 years ago
int kill_console(nssm_service_t *, kill_t *);
Pass parameters around in a data structure. Instead of static variables and functions taking a dozen arguments we now use a single data structure, nssm_service_t, for the service. The code is easier to read and understand, especially when adding more variables through to functions.
11 years ago
int kill_process(nssm_service_t *, HANDLE, unsigned long, unsigned long);
void kill_process_tree(nssm_service_t *, unsigned long, unsigned long, unsigned long);
Kill process tree when stopping service. Ensure that all child processes of the monitored application are killed when the service stops by recursing through all running processes and terminating those whose parent is the application or one of its descendents.
14 years ago
#endif