X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cf44735628cecb0326b953c4872260f223fc8769..31ad423e4fb556ec225a63b161154d3bf3445c1b:/include/wx/process.h diff --git a/include/wx/process.h b/include/wx/process.h index cd5cf5471b..2089c497ac 100644 --- a/include/wx/process.h +++ b/include/wx/process.h @@ -2,57 +2,176 @@ // Name: process.h // Purpose: wxProcess class // Author: Guilhem Lavaux -// Modified by: +// 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 __PROCESSH__ -#define __PROCESSH__ +#ifndef _WX_PROCESSH__ +#define _WX_PROCESSH__ -#ifdef __GNUG__ -#pragma interface +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) + #pragma interface "process.h" #endif -#include "wx/defs.h" -#include "wx/object.h" #include "wx/event.h" -class WXDLLEXPORT wxProcess: public wxEvtHandler +#if wxUSE_STREAMS + #include "wx/stream.h" +#endif + +#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 WXDLLIMPEXP_BASE wxProcess : public wxEvtHandler { - DECLARE_DYNAMIC_CLASS(wxProcess) - public: +public: + // kill the process with the given PID + static wxKillError Kill(int pid, wxSignal sig = wxSIGTERM); + + // 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 = (wxEvtHandler *) NULL, int id = -1) + { Init(parent, id, wxPROCESS_DEFAULT); } + + wxProcess(int flags) { Init(NULL, -1, flags); } + + virtual ~wxProcess(); + + // may be overridden to be notified about process termination + virtual void OnTerminate(int pid, int status); - wxProcess(wxEvtHandler *parent = NULL, int id = -1); - virtual ~wxProcess(); + // 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; } + bool IsRedirected() const { return m_redirect; } - virtual void OnTerminate(int pid); + // detach from the parent - should be called by the parent if it's deleted + // before the process it started terminates + void Detach(); - protected: - int m_id; +#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) + // + // 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 + + // for backwards compatibility only, don't use +#if WXWIN_COMPATIBILITY_2_2 + wxProcess(wxEvtHandler *parent, bool redirect) + { Init(parent, -1, redirect ? wxPROCESS_REDIRECT : wxPROCESS_DEFAULT); } +#endif // WXWIN_COMPATIBILITY_2_2 + +protected: + void Init(wxEvtHandler *parent, int id, int flags); + + int m_id; + +#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) + DECLARE_NO_COPY_CLASS(wxProcess) }; -// Process Event handling +// ---------------------------------------------------------------------------- +// wxProcess events +// ---------------------------------------------------------------------------- + +BEGIN_DECLARE_EVENT_TYPES() + DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_BASE, wxEVT_END_PROCESS, 440) +END_DECLARE_EVENT_TYPES() -class WXDLLEXPORT wxProcessEvent: public wxEvent +class WXDLLIMPEXP_BASE wxProcessEvent : public wxEvent { - DECLARE_DYNAMIC_CLASS(wxProcessEvent) - public: +public: + wxProcessEvent(int id = 0, int pid = 0, int exitcode = 0) : wxEvent(id) + { + 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); } - wxProcessEvent(int id = 0, int pid = -1); - - inline int GetPid() { return m_pid; } - inline void SetPid(int pid) { m_pid = pid; } +public: + int m_pid, + m_exitcode; - public: - int m_pid; + DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxProcessEvent) }; -typedef void (wxObject::*wxProcessEventFunction)(wxProcessEvent&); +typedef void (wxEvtHandler::*wxProcessEventFunction)(wxProcessEvent&); -#define EVT_END_PROCESS(id, func) { wxEVT_END_TERMINATE, id, -1, (wxObjectEvent) (wxEventFunction) (wxProcessEventFunction) & fn, NULL}, +#define EVT_END_PROCESS(id, func) \ + DECLARE_EVENT_TABLE_ENTRY( \ + wxEVT_END_PROCESS, id, -1, \ + (wxObjectEventFunction) (wxEventFunction) wxStaticCastEvent( wxProcessEventFunction, & func ), NULL), #endif - // __PROCESSH__ + // _WX_PROCESSH__