X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/50567b69d60faa5a3575a077bb4f98530813c80d..a4f6fe43c33bd7933645d110ad2719871dab043d:/include/wx/process.h?ds=sidebyside diff --git a/include/wx/process.h b/include/wx/process.h index 571bf65c29..5a893a7ed5 100644 --- a/include/wx/process.h +++ b/include/wx/process.h @@ -1,21 +1,17 @@ ///////////////////////////////////////////////////////////////////////////// -// 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 @@ -24,28 +20,58 @@ #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 @@ -61,24 +87,50 @@ public: // 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; @@ -87,20 +139,21 @@ protected: 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; + +wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_BASE, wxEVT_END_PROCESS, wxProcessEvent ); -class WXDLLEXPORT wxProcessEvent : public wxEvent +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; @@ -114,16 +167,22 @@ public: // 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; + int m_pid, + m_exitcode; - DECLARE_DYNAMIC_CLASS(wxProcessEvent) + DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxProcessEvent) }; -typedef void (wxObject::*wxProcessEventFunction)(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__