/////////////////////////////////////////////////////////////////////////////
-// 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/event.h"
#if wxUSE_STREAMS
#include "wx/utils.h" // for wxSignal
+// the wxProcess creation flags
+enum
+{
+ // no redirection
+ wxPROCESS_DEFAULT = 0,
+
+ // 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
+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
// 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
- // kill the process with the given PID
- static wxKillError Kill(int pid, wxSignal sig = wxSIGTERM);
+ // priority
+ // Sets the priority to the given value: see wxPRIORITY_XXX constants.
+ //
+ // NB: the priority can only be set before the process is created
+ void SetPriority(unsigned priority);
- // test if the given process exists
- static bool Exists(int pid);
+ // Get the current priority.
+ unsigned GetPriority() const { return m_priority; }
+
+ // implementation only - don't use!
+ // --------------------------------
+
+ // needs to be public since it needs to be used from wxExecute() global func
+ void SetPid(long pid) { m_pid = pid; }
protected:
- void Init(wxEvtHandler *parent, int id, bool redirect);
+ void Init(wxEvtHandler *parent, int id, int flags);
int m_id;
+ long m_pid;
+
+ unsigned m_priority;
#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;
bool m_redirect;
DECLARE_DYNAMIC_CLASS(wxProcess)
+ wxDECLARE_NO_COPY_CLASS(wxProcess);
};
// ----------------------------------------------------------------------------
// wxProcess events
// ----------------------------------------------------------------------------
-BEGIN_DECLARE_EVENT_TYPES()
- DECLARE_EVENT_TYPE(wxEVT_END_PROCESS, 440)
-END_DECLARE_EVENT_TYPES()
+class WXDLLIMPEXP_FWD_BASE wxProcessEvent;
-class WXDLLEXPORT wxProcessEvent : public wxEvent
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_BASE, wxEVT_END_PROCESS, wxProcessEvent );
+
+class WXDLLIMPEXP_BASE wxProcessEvent : public wxEvent
{
public:
- wxProcessEvent(int id = 0, int pid = 0, int exitcode = 0) : wxEvent(id)
+ wxProcessEvent(int nId = 0, int pid = 0, int exitcode = 0) : wxEvent(nId)
{
m_eventType = wxEVT_END_PROCESS;
m_pid = pid;
int m_pid,
m_exitcode;
- DECLARE_DYNAMIC_CLASS(wxProcessEvent)
+ 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) \
- DECLARE_EVENT_TABLE_ENTRY( \
- wxEVT_END_PROCESS, id, -1, \
- (wxObjectEventFunction) \
- (wxEventFunction) \
- (wxProcessEventFunction) & func, NULL),
+ wx__DECLARE_EVT1(wxEVT_END_PROCESS, id, wxProcessEventHandler(func))
-#endif
- // _WX_PROCESSH__
+#endif // _WX_PROCESSH__
projects / wxWidgets.git / blobdiff