- if (((long)result) <= 32) {
- free(cl);
-
- wxLogSysError(_("Can't execute command '%s'"), command.c_str());
- return 0;
- }
-
- // Alloc data
- data = new wxExecuteData;
-
- // Create window
- window = CreateWindow(wxPanelClassName, NULL, 0, 0, 0, 0, 0, NULL,
- (HMENU) NULL, wxGetInstance(), 0);
-
- FARPROC ExecuteWindowInstance = MakeProcInstance((FARPROC) wxExecuteWindowCbk,
- wxGetInstance());
-
- SetWindowLong(window, GWL_WNDPROC, (LONG) ExecuteWindowInstance);
- SetWindowLong(window, GWL_USERDATA, (LONG) data);
-
- data->process = result;
- data->window = window;
- data->state = sync;
- data->handler = (sync) ? NULL : handler;
-
- dresult = (DWORD)CreateThread(NULL, 0,
- (LPTHREAD_START_ROUTINE)wxExecuteThread,
- (void *)data, 0, &tid);
- if (dresult == 0) {
- wxDebugMsg("wxExecute PANIC: I can't create the waiting thread !");
- DestroyWindow(window);
- return (long)result;
- }
-
- if (!sync)
- {
- free(cl);
- return (long)result;
- }
-
- // waiting until command executed
- while (data->state)
- wxYield();
-
- free(cl);
- return 0;
-#else
- long instanceID = WinExec((LPCSTR) WXSTRINGCAST command, SW_SHOW);
- if (instanceID < 32) return(0);
-
- if (sync) {
- int running;
- do {
- wxYield();
- running = GetModuleUsage((HANDLE)instanceID);
- } while (running);
- }
- return(instanceID);
-#endif
+ // the IO redirection is only supported with wxUSE_STREAMS
+ BOOL redirect = FALSE;
+#if wxUSE_STREAMS
+ // the first elements are reading ends, the second are the writing ones
+ HANDLE hpipeStdin[2],
+ hpipeStdout[2],
+ hpipeStderr[2];
+ HANDLE hpipeStdinWrite = INVALID_HANDLE_VALUE;
+
+ // open the pipes to which child process IO will be redirected if needed
+ if ( handler && handler->IsRedirected() )
+ {
+ // default secutiry attributes
+ SECURITY_ATTRIBUTES security;
+
+ security.nLength = sizeof(security);
+ security.lpSecurityDescriptor = NULL;
+ security.bInheritHandle = TRUE;
+
+ // create stdin pipe
+ if ( !::CreatePipe(&hpipeStdin[0], &hpipeStdin[1], &security, 0) )
+ {
+ wxLogSysError(_("Can't create the inter-process read pipe"));
+
+ // indicate failure: we need to return different error code
+ // depending on the sync flag
+ return flags & wxEXEC_SYNC ? -1 : 0;
+ }
+
+ // and a stdout one
+ if ( !::CreatePipe(&hpipeStdout[0], &hpipeStdout[1], &security, 0) )
+ {
+ ::CloseHandle(hpipeStdin[0]);
+ ::CloseHandle(hpipeStdin[1]);
+
+ wxLogSysError(_("Can't create the inter-process write pipe"));
+
+ return flags & wxEXEC_SYNC ? -1 : 0;
+ }
+
+ (void)::CreatePipe(&hpipeStderr[0], &hpipeStderr[1], &security, 0);
+
+ redirect = TRUE;
+ }
+#endif // wxUSE_STREAMS
+
+ // create the process
+ STARTUPINFO si;
+ wxZeroMemory(si);
+ si.cb = sizeof(si);
+
+#if wxUSE_STREAMS
+ if ( redirect )
+ {
+ si.dwFlags = STARTF_USESTDHANDLES;
+
+ si.hStdInput = hpipeStdin[0];
+ si.hStdOutput = hpipeStdout[1];
+ si.hStdError = hpipeStderr[1];
+
+ // when the std IO is redirected, we don't show the (console) process
+ // window by default, but this can be overridden by the caller by
+ // specifying wxEXEC_NOHIDE flag
+ if ( !(flags & wxEXEC_NOHIDE) )
+ {
+ si.dwFlags |= STARTF_USESHOWWINDOW;
+ si.wShowWindow = SW_HIDE;
+ }
+
+ // we must duplicate the handle to the write side of stdin pipe to make
+ // it non inheritable: indeed, we must close hpipeStdin[1] before
+ // launching the child process as otherwise this handle will be
+ // inherited by the child which will never close it and so the pipe
+ // will never be closed and the child will be left stuck in ReadFile()
+ if ( !::DuplicateHandle
+ (
+ GetCurrentProcess(),
+ hpipeStdin[1],
+ GetCurrentProcess(),
+ &hpipeStdinWrite,
+ 0, // desired access: unused here
+ FALSE, // not inherited
+ DUPLICATE_SAME_ACCESS // same access as for src handle
+ ) )
+ {
+ wxLogLastError(_T("DuplicateHandle"));
+ }
+
+ ::CloseHandle(hpipeStdin[1]);
+ }
+#endif // wxUSE_STREAMS
+
+ PROCESS_INFORMATION pi;
+ DWORD dwFlags = CREATE_DEFAULT_ERROR_MODE | CREATE_SUSPENDED;
+
+ bool ok = ::CreateProcess
+ (
+ NULL, // application name (use only cmd line)
+ (wxChar *)
+ command.c_str(), // full command line
+ NULL, // security attributes: defaults for both
+ NULL, // the process and its main thread
+ redirect, // inherit handles if we use pipes
+ dwFlags, // process creation flags
+ NULL, // environment (use the same)
+ NULL, // current directory (use the same)
+ &si, // startup info (unused here)
+ &pi // process info
+ ) != 0;
+
+#if wxUSE_STREAMS
+ // we can close the pipe ends used by child anyhow
+ if ( redirect )
+ {
+ ::CloseHandle(hpipeStdin[0]);
+ ::CloseHandle(hpipeStdout[1]);
+ ::CloseHandle(hpipeStderr[1]);
+ }
+#endif // wxUSE_STREAMS
+
+ if ( !ok )
+ {
+#if wxUSE_STREAMS
+ // close the other handles too
+ if ( redirect )
+ {
+ ::CloseHandle(hpipeStdout[0]);
+ ::CloseHandle(hpipeStderr[0]);
+ }
+#endif // wxUSE_STREAMS
+
+ wxLogSysError(_("Execution of command '%s' failed"), command.c_str());
+
+ return flags & wxEXEC_SYNC ? -1 : 0;
+ }
+
+#if wxUSE_STREAMS
+ if ( redirect )
+ {
+ // We can now initialize the wxStreams
+ wxInputStream *inStream = new wxPipeInputStream(hpipeStdout[0]),
+ *errStream = new wxPipeInputStream(hpipeStderr[0]);
+ wxOutputStream *outStream = new wxPipeOutputStream(hpipeStdinWrite);
+
+ handler->SetPipeStreams(inStream, outStream, errStream);
+ }
+#endif // wxUSE_STREAMS
+
+ // register the class for the hidden window used for the notifications
+ if ( !gs_classForHiddenWindow )
+ {
+ gs_classForHiddenWindow = _T("wxHiddenWindow");
+
+ WNDCLASS wndclass;
+ wxZeroMemory(wndclass);
+ wndclass.lpfnWndProc = (WNDPROC)wxExecuteWindowCbk;
+ wndclass.hInstance = wxGetInstance();
+ wndclass.lpszClassName = gs_classForHiddenWindow;
+
+ if ( !::RegisterClass(&wndclass) )
+ {
+ wxLogLastError(wxT("RegisterClass(hidden window)"));
+ }
+ }
+
+ // create a hidden window to receive notification about process
+ // termination
+ HWND hwnd = ::CreateWindow(gs_classForHiddenWindow, NULL,
+ WS_OVERLAPPEDWINDOW,
+ 0, 0, 0, 0, NULL,
+ (HMENU)NULL, wxGetInstance(), 0);
+ wxASSERT_MSG( hwnd, wxT("can't create a hidden window for wxExecute") );
+
+ // Alloc data
+ wxExecuteData *data = new wxExecuteData;
+ data->hProcess = pi.hProcess;
+ data->dwProcessId = pi.dwProcessId;
+ data->hWnd = hwnd;
+ data->state = (flags & wxEXEC_SYNC) != 0;
+ if ( flags & wxEXEC_SYNC )
+ {
+ // handler may be !NULL for capturing program output, but we don't use
+ // it wxExecuteData struct in this case
+ data->handler = NULL;
+ }
+ else
+ {
+ // may be NULL or not
+ data->handler = handler;
+ }
+
+ DWORD tid;
+ HANDLE hThread = ::CreateThread(NULL,
+ 0,
+ wxExecuteThread,
+ (void *)data,
+ 0,
+ &tid);
+
+ // resume process we created now - whether the thread creation succeeded or
+ // not
+ if ( ::ResumeThread(pi.hThread) == (DWORD)-1 )
+ {
+ // ignore it - what can we do?
+ wxLogLastError(wxT("ResumeThread in wxExecute"));
+ }
+
+ // close unneeded handle
+ if ( !::CloseHandle(pi.hThread) )
+ wxLogLastError(wxT("CloseHandle(hThread)"));
+
+ if ( !hThread )
+ {
+ wxLogLastError(wxT("CreateThread in wxExecute"));
+
+ DestroyWindow(hwnd);
+ delete data;
+
+ // the process still started up successfully...
+ return pi.dwProcessId;
+ }
+
+ ::CloseHandle(hThread);
+
+#if wxUSE_IPC
+ // second part of DDE hack: now establish the DDE conversation with the
+ // just launched process
+ if ( !ddeServer.empty() )
+ {
+ bool ok;
+
+ // give the process the time to init itself
+ //
+ // we use a very big timeout hoping that WaitForInputIdle() will return
+ // much sooner, but not INFINITE just in case the process hangs
+ // completely - like this we will regain control sooner or later
+ switch ( ::WaitForInputIdle(pi.hProcess, 10000 /* 10 seconds */) )
+ {
+ default:
+ wxFAIL_MSG( _T("unexpected WaitForInputIdle() return code") );
+ // fall through
+
+ case -1:
+ wxLogLastError(_T("WaitForInputIdle() in wxExecute"));
+
+ case WAIT_TIMEOUT:
+ wxLogDebug(_T("Timeout too small in WaitForInputIdle"));
+
+ ok = FALSE;
+ break;
+
+ case 0:
+ // ok, process ready to accept DDE requests
+ ok = wxExecuteDDE(ddeServer, ddeTopic, ddeCommand);
+ }
+ }
+#endif // wxUSE_IPC
+
+ if ( !(flags & wxEXEC_SYNC) )
+ {
+ // clean up will be done when the process terminates
+
+ // return the pid
+ return pi.dwProcessId;
+ }
+
+ // waiting until command executed (disable everything while doing it)
+#if wxUSE_GUI
+ {
+ wxBusyCursor bc;
+
+ wxWindowDisabler wd;
+#endif // wxUSE_GUI
+
+ while ( data->state )
+ {
+ // don't take 100% of the CPU
+ ::Sleep(500);
+ wxYield();
+ }
+
+#if wxUSE_GUI
+ }
+#endif // wxUSE_GUI
+
+ DWORD dwExitCode = data->dwExitCode;
+ delete data;
+
+ // return the exit code
+ return dwExitCode;
+#else // Win16
+ long instanceID = WinExec((LPCSTR) WXSTRINGCAST command, SW_SHOW);
+ if (instanceID < 32)
+ return flags & wxEXEC_SYNC ? -1 : 0;
+
+ if ( flags & wxEXEC_SYNC )
+ {
+ int running;
+ do
+ {
+ wxYield();
+ running = GetModuleUsage((HINSTANCE)instanceID);
+ } while (running);
+ }
+
+ return instanceID;
+#endif // Win16/32
projects / wxWidgets.git / blobdiff