X-Git-Url: http://git.chise.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fprocess-nt.c;h=9839bdf3faed5996f1c3560abbf9f9adfceb58df;hb=a1655b870904de973c366d85ebdc8adde4ef5e1e;hp=1bdc7033eeea15cc7f4f065f4f9486bc202f1534;hpb=ea21eb75bbf90355514d65686bd53bea579f8e23;p=chise%2Fxemacs-chise.git diff --git a/src/process-nt.c b/src/process-nt.c index 1bdc703..9839bdf 100644 --- a/src/process-nt.c +++ b/src/process-nt.c @@ -2,7 +2,7 @@ Copyright (C) 1985, 1986, 1987, 1988, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. Copyright (C) 1995 Sun Microsystems, Inc. - Copyright (C) 1995, 1996 Ben Wing. + Copyright (C) 1995, 1996, 2000 Ben Wing. This file is part of XEmacs. @@ -26,16 +26,15 @@ Boston, MA 02111-1307, USA. */ #include #include "lisp.h" +#include "console-msw.h" #include "hash.h" #include "lstream.h" #include "process.h" #include "procimpl.h" #include "sysdep.h" -#include -#ifndef __MINGW32__ #include -#else +#ifdef __MINGW32__ #include #endif #include @@ -53,9 +52,22 @@ Lisp_Object Qnt_quote_process_args; struct nt_process_data { HANDLE h_process; + DWORD dwProcessId; + HWND hwnd; /* console window */ int need_enable_child_signals; }; +/* Control whether create_child causes the process to inherit Emacs' + console window, or be given a new one of its own. The default is + nil, to allow multiple DOS programs to run on Win95. Having separate + consoles also allows Emacs to cleanly terminate process groups. */ +Lisp_Object Vmswindows_start_process_share_console; + +/* Control whether create_child cause the process to inherit Emacs' + error mode setting. The default is t, to minimize the possibility of + subprocesses blocking when accessing unmounted drives. */ +Lisp_Object Vmswindows_start_process_inherit_error_mode; + #define NT_DATA(p) ((struct nt_process_data*)((p)->process_data)) /*-----------------------------------------------------------------------*/ @@ -65,10 +77,25 @@ struct nt_process_data /* This one breaks process abstraction. Prototype is in console-msw.h, used by select_process method in event-msw.c */ HANDLE -get_nt_process_handle (struct Lisp_Process *p) +get_nt_process_handle (Lisp_Process *p) { return (NT_DATA (p)->h_process); } + +static struct Lisp_Process * +find_process_from_pid (DWORD pid) +{ + Lisp_Object tail, proc; + + for (tail = Vprocess_list; CONSP (tail); tail = XCDR (tail)) + { + proc = XCAR (tail); + if (NT_DATA (XPROCESS (proc))->dwProcessId == pid) + return XPROCESS (proc); + } + return 0; +} + /*-----------------------------------------------------------------------*/ /* Running remote threads. See Microsoft Systems Journal 1994 Number 5 */ @@ -169,7 +196,7 @@ run_in_other_process (HANDLE h_process, LPVOID data, size_t data_size) { process_memory pm; - CONST size_t code_size = FRAGMENT_CODE_SIZE; + const size_t code_size = FRAGMENT_CODE_SIZE; /* Need at most 3 extra bytes of memory, for data alignment */ size_t total_size = code_size + data_size + 3; LPVOID remote_data; @@ -225,6 +252,8 @@ run_in_other_process (HANDLE h_process, /* Sending signals */ /*-----------------------------------------------------------------------*/ +/* ---------------------------- the NT way ------------------------------- */ + /* * We handle the following signals: * @@ -288,19 +317,34 @@ sig_enable_proc (sig_enable_data* data) * Return nonzero if successful. */ -/* This code assigns a return value of GetProcAddress to function pointers - of many different types. Instead of heavy obscure casts, we just disable - warnings about assignments to different function pointer types. */ -#pragma warning (disable : 4113) - static int -send_signal (HANDLE h_process, int signo) +send_signal_the_nt_way (struct nt_process_data *cp, int pid, int signo) { + HANDLE h_process; HMODULE h_kernel = GetModuleHandle ("kernel32"); + int close_process = 0; DWORD retval; assert (h_kernel != NULL); + if (cp) + { + pid = cp->dwProcessId; + h_process = cp->h_process; + } + else + { + close_process = 1; + /* Try to open the process with required privileges */ + h_process = OpenProcess (PROCESS_CREATE_THREAD + | PROCESS_QUERY_INFORMATION + | PROCESS_VM_OPERATION + | PROCESS_VM_WRITE, + FALSE, pid); + if (!h_process) + return 0; + } + switch (signo) { case SIGKILL: @@ -309,7 +353,9 @@ send_signal (HANDLE h_process, int signo) case SIGHUP: { sigkill_data d; - d.adr_ExitProcess = GetProcAddress (h_kernel, "ExitProcess"); + + d.adr_ExitProcess = + (void (WINAPI *) (UINT)) GetProcAddress (h_kernel, "ExitProcess"); assert (d.adr_ExitProcess); retval = run_in_other_process (h_process, (LPTHREAD_START_ROUTINE)sigkill_proc, @@ -320,6 +366,7 @@ send_signal (HANDLE h_process, int signo) { sigint_data d; d.adr_GenerateConsoleCtrlEvent = + (BOOL (WINAPI *) (DWORD, DWORD)) GetProcAddress (h_kernel, "GenerateConsoleCtrlEvent"); assert (d.adr_GenerateConsoleCtrlEvent); d.event = CTRL_C_EVENT; @@ -332,6 +379,8 @@ send_signal (HANDLE h_process, int signo) assert (0); } + if (close_process) + CloseHandle (h_process); return (int)retval > 0 ? 1 : 0; } @@ -346,6 +395,7 @@ enable_child_signals (HANDLE h_process) assert (h_kernel != NULL); d.adr_SetConsoleCtrlHandler = + (BOOL (WINAPI *) (LPVOID, BOOL)) GetProcAddress (h_kernel, "SetConsoleCtrlHandler"); assert (d.adr_SetConsoleCtrlHandler); run_in_other_process (h_process, (LPTHREAD_START_ROUTINE)sig_enable_proc, @@ -354,6 +404,214 @@ enable_child_signals (HANDLE h_process) #pragma warning (default : 4113) +/* ---------------------------- the 95 way ------------------------------- */ + +static BOOL CALLBACK +find_child_console (HWND hwnd, struct nt_process_data *cp) +{ + DWORD thread_id; + DWORD process_id; + + thread_id = GetWindowThreadProcessId (hwnd, &process_id); + if (process_id == cp->dwProcessId) + { + char window_class[32]; + + GetClassName (hwnd, window_class, sizeof (window_class)); + if (strcmp (window_class, + msw_windows9x_p () + ? "tty" + : "ConsoleWindowClass") == 0) + { + cp->hwnd = hwnd; + return FALSE; + } + } + /* keep looking */ + return TRUE; +} + +static int +send_signal_the_95_way (struct nt_process_data *cp, int pid, int signo) +{ + HANDLE h_process; + int close_process = 0; + int rc = 1; + + if (cp) + { + pid = cp->dwProcessId; + h_process = cp->h_process; + + /* Try to locate console window for process. */ + EnumWindows (find_child_console, (LPARAM) cp); + } + else + { + close_process = 1; + /* Try to open the process with required privileges */ + h_process = OpenProcess (PROCESS_TERMINATE, FALSE, pid); + if (!h_process) + return 0; + } + + if (signo == SIGINT) + { + if (NILP (Vmswindows_start_process_share_console) && cp && cp->hwnd) + { + BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0); + BYTE vk_break_code = VK_CANCEL; + BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); + HWND foreground_window; + + if (break_scan_code == 0) + { + /* Fake Ctrl-C if we can't manage Ctrl-Break. */ + vk_break_code = 'C'; + break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); + } + + foreground_window = GetForegroundWindow (); + if (foreground_window) + { + /* NT 5.0, and apparently also Windows 98, will not allow + a Window to be set to foreground directly without the + user's involvement. The workaround is to attach + ourselves to the thread that owns the foreground + window, since that is the only thread that can set the + foreground window. */ + DWORD foreground_thread, child_thread; + foreground_thread = + GetWindowThreadProcessId (foreground_window, NULL); + if (foreground_thread == GetCurrentThreadId () + || !AttachThreadInput (GetCurrentThreadId (), + foreground_thread, TRUE)) + foreground_thread = 0; + + child_thread = GetWindowThreadProcessId (cp->hwnd, NULL); + if (child_thread == GetCurrentThreadId () + || !AttachThreadInput (GetCurrentThreadId (), + child_thread, TRUE)) + child_thread = 0; + + /* Set the foreground window to the child. */ + if (SetForegroundWindow (cp->hwnd)) + { + /* Generate keystrokes as if user had typed Ctrl-Break or + Ctrl-C. */ + keybd_event (VK_CONTROL, control_scan_code, 0, 0); + keybd_event (vk_break_code, break_scan_code, + (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0); + keybd_event (vk_break_code, break_scan_code, + (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY) + | KEYEVENTF_KEYUP, 0); + keybd_event (VK_CONTROL, control_scan_code, + KEYEVENTF_KEYUP, 0); + + /* Sleep for a bit to give time for Emacs frame to respond + to focus change events (if Emacs was active app). */ + Sleep (100); + + SetForegroundWindow (foreground_window); + } + /* Detach from the foreground and child threads now that + the foreground switching is over. */ + if (foreground_thread) + AttachThreadInput (GetCurrentThreadId (), + foreground_thread, FALSE); + if (child_thread) + AttachThreadInput (GetCurrentThreadId (), + child_thread, FALSE); + } + } + /* Ctrl-Break is NT equivalent of SIGINT. */ + else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid)) + { +#if 0 /* FSF Emacs */ + DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d " + "for pid %lu\n", GetLastError (), pid)); + errno = EINVAL; +#endif + rc = 0; + } + } + else + { + if (NILP (Vmswindows_start_process_share_console) && cp && cp->hwnd) + { +#if 1 + if (msw_windows9x_p ()) + { +/* + Another possibility is to try terminating the VDM out-right by + calling the Shell VxD (id 0x17) V86 interface, function #4 + "SHELL_Destroy_VM", ie. + + mov edx,4 + mov ebx,vm_handle + call shellapi + + First need to determine the current VM handle, and then arrange for + the shellapi call to be made from the system vm (by using + Switch_VM_and_callback). + + Could try to invoke DestroyVM through CallVxD. + +*/ +#if 0 + /* On Win95, posting WM_QUIT causes the 16-bit subsystem + to hang when cmdproxy is used in conjunction with + command.com for an interactive shell. Posting + WM_CLOSE pops up a dialog that, when Yes is selected, + does the same thing. TerminateProcess is also less + than ideal in that subprocesses tend to stick around + until the machine is shutdown, but at least it + doesn't freeze the 16-bit subsystem. */ + PostMessage (cp->hwnd, WM_QUIT, 0xff, 0); +#endif + if (!TerminateProcess (h_process, 0xff)) + { +#if 0 /* FSF Emacs */ + DebPrint (("sys_kill.TerminateProcess returned %d " + "for pid %lu\n", GetLastError (), pid)); + errno = EINVAL; +#endif + rc = 0; + } + } + else +#endif + PostMessage (cp->hwnd, WM_CLOSE, 0, 0); + } + /* Kill the process. On W32 this doesn't kill child processes + so it doesn't work very well for shells which is why it's not + used in every case. */ + else if (!TerminateProcess (h_process, 0xff)) + { +#if 0 /* FSF Emacs */ + DebPrint (("sys_kill.TerminateProcess returned %d " + "for pid %lu\n", GetLastError (), pid)); + errno = EINVAL; +#endif + rc = 0; + } + } + + if (close_process) + CloseHandle (h_process); + + return rc; +} + +/* -------------------------- all-OS functions ---------------------------- */ + +static int +send_signal (struct nt_process_data *cp, int pid, int signo) +{ + return send_signal_the_nt_way (cp, pid, signo) + || send_signal_the_95_way (cp, pid, signo); +} + /* * Signal error if SIGNO is not supported */ @@ -375,17 +633,17 @@ validate_signal_number (int signo) */ static void -nt_alloc_process_data (struct Lisp_Process *p) +nt_alloc_process_data (Lisp_Process *p) { p->process_data = xnew_and_zero (struct nt_process_data); } static void -nt_finalize_process_data (struct Lisp_Process *p, int for_disksave) +nt_finalize_process_data (Lisp_Process *p, int for_disksave) { assert (!for_disksave); - if (NT_DATA(p)->h_process) - CloseHandle (NT_DATA(p)->h_process); + if (NT_DATA (p)->h_process) + CloseHandle (NT_DATA (p)->h_process); } /* @@ -417,8 +675,15 @@ signal_cannot_launch (Lisp_Object image_file, DWORD err) signal_simple_error_2 ("Error starting", image_file, lisp_strerror (errno)); } +static void +ensure_console_window_exists () +{ + if (msw_windows9x_p ()) + msw_hide_console (); +} + static int -nt_create_process (struct Lisp_Process *p, +nt_create_process (Lisp_Process *p, Lisp_Object *argv, int nargv, Lisp_Object program, Lisp_Object cur_dir) { @@ -582,7 +847,7 @@ nt_create_process (struct Lisp_Process *p, new_space++; /* Allocate space and copy variables into it */ - penv = proc_env = alloca(new_space); + penv = proc_env = (char*) alloca(new_space); for (i = 0; i < new_length; i++) { strcpy(penv, env[i]); @@ -596,6 +861,7 @@ nt_create_process (struct Lisp_Process *p, STARTUPINFO si; PROCESS_INFORMATION pi; DWORD err; + DWORD flags; xzero (si); si.dwFlags = STARTF_USESHOWWINDOW; @@ -608,9 +874,19 @@ nt_create_process (struct Lisp_Process *p, si.dwFlags |= STARTF_USESTDHANDLES; } - err = (CreateProcess (NULL, command_line, NULL, NULL, TRUE, - CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP - | CREATE_SUSPENDED, + flags = CREATE_SUSPENDED; + if (msw_windows9x_p ()) + flags |= (!NILP (Vmswindows_start_process_share_console) + ? CREATE_NEW_PROCESS_GROUP + : CREATE_NEW_CONSOLE); + else + flags |= CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP; + if (NILP (Vmswindows_start_process_inherit_error_mode)) + flags |= CREATE_DEFAULT_ERROR_MODE; + + ensure_console_window_exists (); + + err = (CreateProcess (NULL, command_line, NULL, NULL, TRUE, flags, proc_env, (char *) XSTRING_DATA (cur_dir), &si, &pi) ? 0 : GetLastError ()); @@ -637,6 +913,7 @@ nt_create_process (struct Lisp_Process *p, if (do_io) { NT_DATA(p)->h_process = pi.hProcess; + NT_DATA(p)->dwProcessId = pi.dwProcessId; init_process_io_handles (p, (void*)hmyslurp, (void*)hmyshove, 0); } else @@ -671,7 +948,7 @@ nt_create_process (struct Lisp_Process *p, */ static void -nt_update_status_if_terminated (struct Lisp_Process* p) +nt_update_status_if_terminated (Lisp_Process* p) { DWORD exit_code; @@ -718,19 +995,19 @@ static void nt_send_process (Lisp_Object proc, struct lstream* lstream) { volatile Lisp_Object vol_proc = proc; - struct Lisp_Process *volatile p = XPROCESS (proc); + Lisp_Process *volatile p = XPROCESS (proc); /* use a reasonable-sized buffer (somewhere around the size of the stream buffer) so as to avoid inundating the stream with blocked data. */ - Bufbyte chunkbuf[128]; + Bufbyte chunkbuf[512]; Bytecount chunklen; while (1) { ssize_t writeret; - chunklen = Lstream_read (lstream, chunkbuf, 128); + chunklen = Lstream_read (lstream, chunkbuf, 512); if (chunklen <= 0) break; /* perhaps should abort() if < 0? This should never happen. */ @@ -786,22 +1063,22 @@ static void nt_kill_child_process (Lisp_Object proc, int signo, int current_group, int nomsg) { - struct Lisp_Process *p = XPROCESS (proc); + Lisp_Process *p = XPROCESS (proc); /* Enable child signals if necessary. This may lose the first but it's better than nothing. */ - if (NT_DATA(p)->need_enable_child_signals > 0) + if (NT_DATA (p)->need_enable_child_signals > 0) { - enable_child_signals(NT_DATA(p)->h_process); - NT_DATA(p)->need_enable_child_signals = 0; + enable_child_signals (NT_DATA(p)->h_process); + NT_DATA (p)->need_enable_child_signals = 0; } /* Signal error if SIGNO cannot be sent */ validate_signal_number (signo); /* Send signal */ - if (!send_signal (NT_DATA(p)->h_process, signo)) - error ("Cannot send signal to process"); + if (!send_signal (NT_DATA (p), 0, signo)) + signal_simple_error ("Cannot send signal to process", proc); } /* @@ -813,26 +1090,13 @@ nt_kill_child_process (Lisp_Object proc, int signo, static int nt_kill_process_by_pid (int pid, int signo) { - HANDLE h_process; - int send_result; - + struct Lisp_Process *p; + /* Signal error if SIGNO cannot be sent */ validate_signal_number (signo); - /* Try to open the process with required privileges */ - h_process = OpenProcess (PROCESS_CREATE_THREAD - | PROCESS_QUERY_INFORMATION - | PROCESS_VM_OPERATION - | PROCESS_VM_WRITE, - FALSE, pid); - if (h_process == NULL) - return -1; - - send_result = send_signal (h_process, signo); - - CloseHandle (h_process); - - return send_result ? 0 : -1; + p = find_process_from_pid (pid); + return send_signal (p ? NT_DATA (p) : 0, pid, signo) ? 0 : -1; } /*-----------------------------------------------------------------------*/ @@ -943,9 +1207,11 @@ nt_canonicalize_host_name (Lisp_Object host) deactivate and close it via delete-process */ static void -nt_open_network_stream (Lisp_Object name, Lisp_Object host, Lisp_Object service, +nt_open_network_stream (Lisp_Object name, Lisp_Object host, + Lisp_Object service, Lisp_Object protocol, void** vinfd, void** voutfd) { + /* !!#### not Mule-ized */ struct sockaddr_in address; SOCKET s; int port; @@ -954,8 +1220,7 @@ nt_open_network_stream (Lisp_Object name, Lisp_Object host, Lisp_Object service, CHECK_STRING (host); if (!EQ (protocol, Qtcp)) - error ("Unsupported protocol \"%s\"", - string_data (symbol_name (XSYMBOL (protocol)))); + signal_simple_error ("Unsupported protocol", protocol); if (INTP (service)) port = htons ((unsigned short) XINT (service)); @@ -965,7 +1230,7 @@ nt_open_network_stream (Lisp_Object name, Lisp_Object host, Lisp_Object service, CHECK_STRING (service); svc_info = getservbyname ((char *) XSTRING_DATA (service), "tcp"); if (svc_info == 0) - error ("Unknown service \"%s\"", XSTRING_DATA (service)); + signal_simple_error ("Unknown service", service); port = svc_info->s_port; } @@ -1027,10 +1292,20 @@ nt_open_network_stream (Lisp_Object name, Lisp_Object host, Lisp_Object service, connect_failed: closesocket (s); - warn_when_safe(Qstream, Qwarning, - "failure to open network stream to host \"%s\" for service \"%s\"", - XSTRING_DATA (host), - XSTRING_DATA (service)); + if (INTP (service)) + { + warn_when_safe (Qstream, Qwarning, + "failure to open network stream to host \"%s\" for service \"%d\"", + XSTRING_DATA (host), + (unsigned short) XINT (service)); + } + else + { + warn_when_safe (Qstream, Qwarning, + "failure to open network stream to host \"%s\" for service \"%s\"", + XSTRING_DATA (host), + XSTRING_DATA (service)); + } report_file_error ("connection failed", list2 (host, name)); } @@ -1070,4 +1345,22 @@ syms_of_process_nt (void) void vars_of_process_nt (void) { + DEFVAR_LISP ("mswindows-start-process-share-console", + &Vmswindows_start_process_share_console /* +When nil, new child processes are given a new console. +When non-nil, they share the Emacs console; this has the limitation of +allowing only only DOS subprocess to run at a time (whether started directly +or indirectly by Emacs), and preventing Emacs from cleanly terminating the +subprocess group, but may allow Emacs to interrupt a subprocess that doesn't +otherwise respond to interrupts from Emacs. +*/ ); + Vmswindows_start_process_share_console = Qnil; + + DEFVAR_LISP ("mswindows-start-process-inherit-error-mode", + &Vmswindows_start_process_inherit_error_mode /* + "When nil, new child processes revert to the default error mode. +When non-nil, they inherit their error mode setting from Emacs, which stops +them blocking when trying to access unmounted drives etc. +*/ ); + Vmswindows_start_process_inherit_error_mode = Qt; }