// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
-// Copyright: (c) 1998-2002 wxWindows dev team
+// Copyright: (c) 1998-2002 wxWidgets dev team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation
#endif
#include "wx/log.h"
#endif
-#ifdef __WIN32__
- #include "wx/stream.h"
- #include "wx/process.h"
-#endif
+#include "wx/stream.h"
+#include "wx/process.h"
#include "wx/apptrait.h"
+#include "wx/module.h"
+
#include "wx/msw/private.h"
#include <ctype.h>
#include <sys/stat.h>
#endif
-#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-#ifndef __UNIX__
- #include <io.h>
-#endif
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+ #ifndef __UNIX__
+ #include <io.h>
+ #endif
-#ifndef __GNUWIN32__
-#include <shellapi.h>
-#endif
+ #ifndef __GNUWIN32__
+ #include <shellapi.h>
+ #endif
#endif
#include <stdio.h>
#include "wx/dde.h" // for WX_DDE hack in wxExecute
#endif // wxUSE_IPC
+// implemented in utils.cpp
+extern "C" WXDLLIMPEXP_BASE HWND
+wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
+
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// we need to create a hidden window to receive the process termination
// notifications and for this we need a (Win) class name for it which we will
// register the first time it's needed
+static const wxChar *wxMSWEXEC_WNDCLASSNAME = wxT("_wxExecute_Internal_Class");
static const wxChar *gs_classForHiddenWindow = NULL;
// ----------------------------------------------------------------------------
public:
~wxExecuteData()
{
-#ifndef __WIN16__
if ( !::CloseHandle(hProcess) )
{
wxLogLastError(wxT("CloseHandle(hProcess)"));
}
-#endif
}
HWND hWnd; // window to send wxWM_PROC_TERMINATED to
DWORD dwProcessId; // pid of the process
wxProcess *handler;
DWORD dwExitCode; // the exit code of the process
- bool state; // set to FALSE when the process finishes
+ bool state; // set to false when the process finishes
};
-#if defined(__WIN32__) && wxUSE_STREAMS && !defined(__WXWINCE__)
+class wxExecuteModule : public wxModule
+{
+public:
+ virtual bool OnInit() { return true; }
+ virtual void OnExit()
+ {
+ if ( *gs_classForHiddenWindow )
+ {
+ if ( !::UnregisterClass(wxMSWEXEC_WNDCLASSNAME, wxGetInstance()) )
+ {
+ wxLogLastError(_T("UnregisterClass(wxExecClass)"));
+ }
+
+ gs_classForHiddenWindow = NULL;
+ }
+ }
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxExecuteModule)
+};
+
+#if wxUSE_STREAMS && !defined(__WXWINCE__)
// ----------------------------------------------------------------------------
// wxPipeStreams
wxPipeInputStream(HANDLE hInput);
virtual ~wxPipeInputStream();
- // returns TRUE if the pipe is still opened
+ // returns true if the pipe is still opened
bool IsOpened() const { return m_hInput != INVALID_HANDLE_VALUE; }
- // returns TRUE if there is any data to be read from the pipe
+ // returns true if there is any data to be read from the pipe
virtual bool CanRead() const;
protected:
{
public:
wxPipeOutputStream(HANDLE hOutput);
- virtual ~wxPipeOutputStream();
+ virtual ~wxPipeOutputStream() { Close(); }
+ bool Close();
protected:
size_t OnSysWrite(const void *buffer, size_t len);
// default ctor doesn't do anything
wxPipe() { m_handles[Read] = m_handles[Write] = INVALID_HANDLE_VALUE; }
- // create the pipe, return TRUE if ok, FALSE on error
+ // create the pipe, return true if ok, false on error
bool Create()
{
// default secutiry attributes
{
wxLogSysError(_("Failed to create an anonymous pipe"));
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
- // return TRUE if we were created successfully
+ // return true if we were created successfully
bool IsOk() const { return m_handles[Read] != INVALID_HANDLE_VALUE; }
// return the descriptor for one of the pipe ends
- HANDLE operator[](Direction which) const
- {
- wxASSERT_MSG( which >= 0 && (size_t)which < WXSIZEOF(m_handles),
- _T("invalid pipe index") );
-
- return m_handles[which];
- }
+ HANDLE operator[](Direction which) const { return m_handles[which]; }
// detach a descriptor, meaning that the pipe dtor won't close it, and
// return it
HANDLE Detach(Direction which)
{
- wxASSERT_MSG( which >= 0 && (size_t)which < WXSIZEOF(m_handles),
- _T("invalid pipe index") );
-
HANDLE handle = m_handles[which];
m_handles[which] = INVALID_HANDLE_VALUE;
// implementation
// ============================================================================
-#ifdef __WIN32__
-
// ----------------------------------------------------------------------------
// process termination detecting support
// ----------------------------------------------------------------------------
bool wxPipeInputStream::CanRead() const
{
if ( !IsOpened() )
- return FALSE;
+ return false;
DWORD nAvailable;
wxPipeOutputStream::wxPipeOutputStream(HANDLE hOutput)
{
m_hOutput = hOutput;
+
+ // unblock the pipe to prevent deadlocks when we're writing to the pipe
+ // from which the child process can't read because it is writing in its own
+ // end of it
+ DWORD mode = PIPE_READMODE_BYTE | PIPE_NOWAIT;
+ if ( !::SetNamedPipeHandleState
+ (
+ m_hOutput,
+ &mode,
+ NULL, // collection count (we don't set it)
+ NULL // timeout (we don't set it neither)
+ ) )
+ {
+ wxLogLastError(_T("SetNamedPipeHandleState(PIPE_NOWAIT)"));
+ }
}
-wxPipeOutputStream::~wxPipeOutputStream()
+bool wxPipeOutputStream::Close()
{
- ::CloseHandle(m_hOutput);
+ return ::CloseHandle(m_hOutput) != 0;
}
+
size_t wxPipeOutputStream::OnSysWrite(const void *buffer, size_t len)
{
- DWORD bytesWritten;
-
m_lasterror = wxSTREAM_NO_ERROR;
- if ( !::WriteFile(m_hOutput, buffer, len, &bytesWritten, NULL) )
+
+ DWORD totalWritten = 0;
+ while ( len > 0 )
{
- m_lasterror = ::GetLastError() == ERROR_BROKEN_PIPE
- ? wxSTREAM_EOF
- : wxSTREAM_WRITE_ERROR;
+ DWORD chunkWritten;
+ if ( !::WriteFile(m_hOutput, buffer, len, &chunkWritten, NULL) )
+ {
+ m_lasterror = ::GetLastError() == ERROR_BROKEN_PIPE
+ ? wxSTREAM_EOF
+ : wxSTREAM_WRITE_ERROR;
+ break;
+ }
+
+ if ( !chunkWritten )
+ break;
+
+ buffer = (char *)buffer + chunkWritten;
+ totalWritten += chunkWritten;
+ len -= chunkWritten;
}
- return bytesWritten;
+ return totalWritten;
}
#endif // wxUSE_STREAMS
-#endif // Win32
-
// ============================================================================
// wxExecute functions family
// ============================================================================
const wxString& ddeTopic,
const wxString& ddeCommand)
{
- bool ok = FALSE;
+ bool ok wxDUMMY_INITIALIZE(false);
wxDDEClient client;
wxConnectionBase *conn = client.MakeConnection(wxEmptyString,
ddeTopic);
if ( !conn )
{
- ok = FALSE;
+ ok = false;
}
else // connected to DDE server
{
long wxExecute(const wxString& cmd, int flags, wxProcess *handler)
{
- wxCHECK_MSG( !!cmd, 0, wxT("empty command in wxExecute") );
+ wxCHECK_MSG( !cmd.empty(), 0, wxT("empty command in wxExecute") );
#if wxUSE_THREADS
// for many reasons, the code below breaks down if it's called from another
}
#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
-#ifdef __WXWINCE__
- HWND hwnd = ::CreateWindow(gs_classForHiddenWindow, NULL,
- WS_OVERLAPPED,
- 0, 0, 0, 0, NULL,
- (HMENU)NULL, wxGetInstance(), 0);
-#else
- HWND hwnd = ::CreateWindow(gs_classForHiddenWindow, NULL,
- WS_OVERLAPPEDWINDOW,
- 0, 0, 0, 0, NULL,
- (HMENU)NULL, wxGetInstance(), 0);
-#endif
+ HWND hwnd = wxCreateHiddenWindow
+ (
+ &gs_classForHiddenWindow,
+ wxMSWEXEC_WNDCLASSNAME,
+ (WNDPROC)wxExecuteWindowCbk
+ );
+
wxASSERT_MSG( hwnd, wxT("can't create a hidden window for wxExecute") );
// Alloc data
case WAIT_TIMEOUT:
wxLogDebug(_T("Timeout too small in WaitForInputIdle"));
- ok = FALSE;
+ ok = false;
break;
case 0:
// ok, process ready to accept DDE requests
ok = wxExecuteDDE(ddeServer, ddeTopic, ddeCommand);
}
+
+ if ( !ok )
+ {
+ wxLogDebug(_T("Failed to send DDE request to the process \"%s\"."),
+ cmd.c_str());
+ }
}
#endif // wxUSE_IPC
wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
wxCHECK_MSG( traits, -1, _T("no wxAppTraits in wxExecute()?") );
- // disable all app windows while waiting for the child process to finish
- void *cookie = traits->BeforeChildWaitLoop();
+ void *cookie = NULL;
+ if ( !(flags & wxEXEC_NODISABLE) )
+ {
+ // disable all app windows while waiting for the child process to finish
+ cookie = traits->BeforeChildWaitLoop();
+ }
// wait until the child process terminates
while ( data->state )
traits->AlwaysYield();
}
- traits->AfterChildWaitLoop(cookie);
+ if ( !(flags & wxEXEC_NODISABLE) )
+ {
+ // reenable disabled windows back
+ traits->AfterChildWaitLoop(cookie);
+ }
DWORD dwExitCode = data->dwExitCode;
delete data;
projects / wxWidgets.git / blobdiff