X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8b33ae2d5a6ed14ab4b89391b2a1cb5e9f164e90..f9d6e4e454ac06b3303c71081b289152c8867ec1:/include/wx/process.h diff --git a/include/wx/process.h b/include/wx/process.h index 19ae35c1f6..d49f9f9242 100644 --- a/include/wx/process.h +++ b/include/wx/process.h @@ -1,86 +1,170 @@ ///////////////////////////////////////////////////////////////////////////// -// 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, bool needPipe = FALSE, int id = -1); - ~wxProcess(); + // 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 = (wxEvtHandler *) 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; } + 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; - wxOutputStream *GetOutputStream() const; - - // These functions should not be called by the usual user. They are only - // intended to be used by wxExecute. - // Install pipes - void SetPipeStreams(wxInputStream *in_stream, wxOutputStream *out_stream); - bool NeedPipe() const; + 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 protected: + void Init(wxEvtHandler *parent, int id, int flags); + void SetPid(long pid) { m_pid = pid; } + int m_id; - bool m_needPipe; - wxInputStream *m_in_stream; - wxOutputStream *m_out_stream; + 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) + DECLARE_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}, +extern WXDLLIMPEXP_BASE const wxEventType wxEVT_END_PROCESS; -#endif - // _WX_PROCESSH__ +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) \ + (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxProcessEventFunction, &func) + +#define EVT_END_PROCESS(id, func) \ + wx__DECLARE_EVT1(wxEVT_END_PROCESS, id, wxProcessEventHandler(func)) + +#endif // _WX_PROCESSH__