/////////////////////////////////////////////////////////////////////////////
-// Name: process.h
+// Name: wx/process.h
// Purpose: wxProcess class
// Author: Guilhem Lavaux
// Modified by: Vadim Zeitlin to check error codes, added Detach() method
// Created: 24/06/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Guilhem Lavaux
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_PROCESSH__
#define _WX_PROCESSH__
-#ifdef __GNUG__
- #pragma interface "process.h"
-#endif
-
-#include "wx/defs.h"
-#include "wx/object.h"
#include "wx/event.h"
-#include "wx/stream.h"
-
-// Process Event handling
-class WXDLLEXPORT wxProcessEvent : public wxEvent
-{
-DECLARE_DYNAMIC_CLASS(wxProcessEvent)
-public:
- wxProcessEvent(int id = 0, int pid = 0, int exitcode = 0) : wxEvent(id)
- {
- m_eventType = wxEVT_END_PROCESS;
- m_pid = pid;
- m_exitcode = exitcode;
- }
+#if wxUSE_STREAMS
+ #include "wx/stream.h"
+#endif
- // accessors
- // PID of process which terminated
- int GetPid() { return m_pid; }
+#include "wx/utils.h" // for wxSignal
- // the exit code
- int GetExitCode() { return m_exitcode; }
+// the wxProcess creation flags
+enum
+{
+ // no redirection
+ wxPROCESS_DEFAULT = 0,
-public:
- int m_pid, m_exitcode;
+ // redirect the IO of the child process
+ wxPROCESS_REDIRECT = 1
};
+// ----------------------------------------------------------------------------
// A wxProcess object should be passed to wxExecute - than its OnTerminate()
// function will be called when the process terminates.
-class WXDLLEXPORT wxProcess : public wxEvtHandler
-{
-DECLARE_DYNAMIC_CLASS(wxProcess)
+// ----------------------------------------------------------------------------
+class WXDLLIMPEXP_BASE wxProcess : public wxEvtHandler
+{
public:
- wxProcess(wxEvtHandler *parent = (wxEvtHandler *) NULL, int id = -1)
- { Init(parent, id, FALSE); }
- wxProcess(wxEvtHandler *parent, bool redirect)
- { Init(parent, -1, redirect); }
+ // kill the process with the given PID
+ static wxKillError Kill(int pid, wxSignal sig = wxSIGTERM, int flags = wxKILL_NOCHILDREN);
+
+ // test if the given process exists
+ static bool Exists(int pid);
+
+ // this function replaces the standard popen() one: it launches a process
+ // asynchronously and allows the caller to get the streams connected to its
+ // std{in|out|err}
+ //
+ // on error NULL is returned, in any case the process object will be
+ // deleted automatically when the process terminates and should *not* be
+ // deleted by the caller
+ static wxProcess *Open(const wxString& cmd, int flags = wxEXEC_ASYNC);
+
+
+ // ctors
+ wxProcess(wxEvtHandler *parent = NULL, int nId = wxID_ANY)
+ { Init(parent, nId, wxPROCESS_DEFAULT); }
+
+ wxProcess(int flags) { Init(NULL, wxID_ANY, flags); }
virtual ~wxProcess();
+ // get the process ID of the process executed by Open()
+ long GetPid() const { return m_pid; }
+
// may be overridden to be notified about process termination
virtual void OnTerminate(int pid, int status);
// call this before passing the object to wxExecute() to redirect the
// launched process stdin/stdout, then use GetInputStream() and
// GetOutputStream() to get access to them
- void Redirect() { m_redirect = TRUE; }
+ void Redirect() { m_redirect = true; }
bool IsRedirected() const { return m_redirect; }
// detach from the parent - should be called by the parent if it's deleted
// before the process it started terminates
void Detach();
+#if wxUSE_STREAMS
// Pipe handling
wxInputStream *GetInputStream() const { return m_inputStream; }
+ wxInputStream *GetErrorStream() const { return m_errorStream; }
wxOutputStream *GetOutputStream() const { return m_outputStream; }
+ // close the output stream indicating that nothing more will be written
+ void CloseOutput() { delete m_outputStream; m_outputStream = NULL; }
+
+ // return true if the child process stdout is not closed
+ bool IsInputOpened() const;
+
+ // return true if any input is available on the child process stdout/err
+ bool IsInputAvailable() const;
+ bool IsErrorAvailable() const;
+
// implementation only (for wxExecute)
- void SetPipeStreams(wxInputStream *inStream, wxOutputStream *outStream);
+ //
+ // NB: the streams passed here should correspond to the child process
+ // stdout, stdin and stderr and here the normal naming convention is
+ // used unlike elsewhere in this class
+ void SetPipeStreams(wxInputStream *outStream,
+ wxOutputStream *inStream,
+ wxInputStream *errStream);
+#endif // wxUSE_STREAMS
protected:
- void Init(wxEvtHandler *parent, int id, bool redirect);
+ void Init(wxEvtHandler *parent, int id, int flags);
+ void SetPid(long pid) { m_pid = pid; }
int m_id;
-
- wxInputStream *m_inputStream;
+ long m_pid;
+
+#if wxUSE_STREAMS
+ // these streams are connected to stdout, stderr and stdin of the child
+ // process respectively (yes, m_inputStream corresponds to stdout -- very
+ // confusing but too late to change now)
+ wxInputStream *m_inputStream,
+ *m_errorStream;
wxOutputStream *m_outputStream;
+#endif // wxUSE_STREAMS
bool m_redirect;
+
+ DECLARE_DYNAMIC_CLASS(wxProcess)
+ wxDECLARE_NO_COPY_CLASS(wxProcess);
};
-typedef void (wxObject::*wxProcessEventFunction)(wxProcessEvent&);
+// ----------------------------------------------------------------------------
+// wxProcess events
+// ----------------------------------------------------------------------------
-#define EVT_END_PROCESS(id, func) { wxEVT_END_PROCESS, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxProcessEventFunction) & func, NULL},
+class WXDLLIMPEXP_FWD_BASE wxProcessEvent;
-#endif
- // _WX_PROCESSH__
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_BASE, wxEVT_END_PROCESS, wxProcessEvent );
+
+class WXDLLIMPEXP_BASE wxProcessEvent : public wxEvent
+{
+public:
+ wxProcessEvent(int nId = 0, int pid = 0, int exitcode = 0) : wxEvent(nId)
+ {
+ m_eventType = wxEVT_END_PROCESS;
+ m_pid = pid;
+ m_exitcode = exitcode;
+ }
+
+ // accessors
+ // PID of process which terminated
+ int GetPid() { return m_pid; }
+
+ // the exit code
+ int GetExitCode() { return m_exitcode; }
+
+ // implement the base class pure virtual
+ virtual wxEvent *Clone() const { return new wxProcessEvent(*this); }
+
+public:
+ int m_pid,
+ m_exitcode;
+
+ DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxProcessEvent)
+};
+
+typedef void (wxEvtHandler::*wxProcessEventFunction)(wxProcessEvent&);
+
+#define wxProcessEventHandler(func) \
+ wxEVENT_HANDLER_CAST(wxProcessEventFunction, func)
+
+#define EVT_END_PROCESS(id, func) \
+ wx__DECLARE_EVT1(wxEVT_END_PROCESS, id, wxProcessEventHandler(func))
+
+#endif // _WX_PROCESSH__
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