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03937: Using CTRL-C to end MAME no longer works reliably

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Added explicit control handler for the console. Ctrl+C/Ctrl+Break now
explicitly terminate the process forcefully, rather than unwinding
through the system in an unexpected state. Other console events 
(exit, shutdown, logoff) request a graceful exit.
This commit is contained in:
Aaron Giles 2010-10-19 14:15:46 +00:00
parent 12f9dbe1b0
commit ec93220f95
1 changed files with 50 additions and 2 deletions
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50
src/osd/windows/winmain.c
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@ -254,6 +254,8 @@ static HANDLE watchdog_reset_event;
static HANDLE watchdog_exit_event; static HANDLE watchdog_exit_event;
static HANDLE watchdog_thread; static HANDLE watchdog_thread;
static running_machine *g_current_machine;
#ifndef MESS #ifndef MESS
static const TCHAR helpfile[] = TEXT("docs\\windows.txt"); static const TCHAR helpfile[] = TEXT("docs\\windows.txt");
@ -278,7 +280,7 @@ bool stack_walker::s_initialized = false;
//************************************************************************** //**************************************************************************
static void osd_exit(running_machine &machine); static void osd_exit(running_machine &machine);
static BOOL WINAPI control_handler(DWORD type);
static int is_double_click_start(int argc); static int is_double_click_start(int argc);
static DWORD WINAPI watchdog_thread_entry(LPVOID lpParameter); static DWORD WINAPI watchdog_thread_entry(LPVOID lpParameter);
static LONG WINAPI exception_filter(struct _EXCEPTION_POINTERS *info); static LONG WINAPI exception_filter(struct _EXCEPTION_POINTERS *info);
@ -390,6 +392,9 @@ int main(int argc, char *argv[])
// initialize common controls // initialize common controls
InitCommonControls(); InitCommonControls();
// set a handler to catch ctrl-c
SetConsoleCtrlHandler(control_handler, TRUE);
// allocate symbols // allocate symbols
symbol_manager local_symbols(argv[0]); symbol_manager local_symbols(argv[0]);
symbols = &local_symbols; symbols = &local_symbols;
@ -421,6 +426,43 @@ int main(int argc, char *argv[])
} }
//============================================================
// control_handler
//============================================================
static BOOL WINAPI control_handler(DWORD type)
{
// indicate to the user that we detected something
switch (type)
{
case CTRL_C_EVENT: fprintf(stderr, "Caught Ctrl+C"); break;
case CTRL_BREAK_EVENT: fprintf(stderr, "Caught Ctrl+break"); break;
case CTRL_CLOSE_EVENT: fprintf(stderr, "Caught console close"); break;
case CTRL_LOGOFF_EVENT: fprintf(stderr, "Caught logoff"); break;
case CTRL_SHUTDOWN_EVENT: fprintf(stderr, "Caught shutdown"); break;
default: fprintf(stderr, "Caught unexpected console event"); break;
}
// if we don't have a machine yet, or if we are handling ctrl+c/ctrl+break,
// just terminate hard, without throwing or handling any atexit stuff
if (g_current_machine == NULL || type == CTRL_C_EVENT || type == CTRL_BREAK_EVENT)
{
fprintf(stderr, ", exiting\n");
TerminateProcess(GetCurrentProcess(), MAMERR_FATALERROR);
}
// all other situations attempt to do a clean exit
else
{
fprintf(stderr, ", exit requested\n");
g_current_machine->schedule_exit();
}
// in all cases we handled it
return TRUE;
}
//============================================================ //============================================================
// winui_output_error // winui_output_error
//============================================================ //============================================================
@ -544,6 +586,9 @@ void osd_init(running_machine *machine)
profiler = global_alloc(sampling_profiler(1000, profile - 1)); profiler = global_alloc(sampling_profiler(1000, profile - 1));
profiler->start(); profiler->start();
} }
// note the existence of a machine
g_current_machine = machine;
} }
@ -553,6 +598,9 @@ void osd_init(running_machine *machine)
static void osd_exit(running_machine &machine) static void osd_exit(running_machine &machine)
{ {
// no longer have a machine
g_current_machine = NULL;
// take down the watchdog thread if it exists // take down the watchdog thread if it exists
if (watchdog_thread != NULL) if (watchdog_thread != NULL)
{ {