/////////////////////////////////////////////////////////////////////////////
-// Name: process.cpp
+// Name: src/common/process.cpp
// Purpose: Process termination classes
// 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) Guilhem Lavaux
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
- #pragma implementation "process.h"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#pragma hdrstop
#endif
-#ifndef WX_PRECOMP
- #include "wx/defs.h"
-#endif
-
#include "wx/process.h"
+// ----------------------------------------------------------------------------
+// event tables and such
+// ----------------------------------------------------------------------------
+
+wxDEFINE_EVENT( wxEVT_END_PROCESS, wxProcessEvent );
+
IMPLEMENT_DYNAMIC_CLASS(wxProcess, wxEvtHandler)
IMPLEMENT_DYNAMIC_CLASS(wxProcessEvent, wxEvent)
-wxProcess::wxProcess(wxEvtHandler *parent, int id)
+// ============================================================================
+// wxProcess implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxProcess creation
+// ----------------------------------------------------------------------------
+
+void wxProcess::Init(wxEvtHandler *parent, int id, int flags)
+{
+ if ( parent )
+ SetNextHandler(parent);
+
+ m_id = id;
+ m_pid = 0;
+ m_priority = wxPRIORITY_DEFAULT;
+ m_redirect = (flags & wxPROCESS_REDIRECT) != 0;
+
+#if wxUSE_STREAMS
+ m_inputStream = NULL;
+ m_errorStream = NULL;
+ m_outputStream = NULL;
+#endif // wxUSE_STREAMS
+}
+
+/* static */
+wxProcess *wxProcess::Open(const wxString& cmd, int flags)
{
- if (parent)
- SetNextHandler(parent);
+ wxASSERT_MSG( !(flags & wxEXEC_SYNC), wxT("wxEXEC_SYNC should not be used." ));
+ wxProcess *process = new wxProcess(wxPROCESS_REDIRECT);
+ long pid = wxExecute(cmd, flags, process);
+ if( !pid )
+ {
+ // couldn't launch the process
+ delete process;
+ return NULL;
+ }
- m_id = id;
+ process->SetPid(pid);
+
+ return process;
+}
+
+// ----------------------------------------------------------------------------
+// wxProcess termination
+// ----------------------------------------------------------------------------
+
+wxProcess::~wxProcess()
+{
+#if wxUSE_STREAMS
+ delete m_inputStream;
+ delete m_errorStream;
+ delete m_outputStream;
+#endif // wxUSE_STREAMS
}
void wxProcess::OnTerminate(int pid, int status)
{
- wxProcessEvent event(m_id, pid, status);
+ wxProcessEvent event(m_id, pid, status);
+
+ if ( !ProcessEvent(event) )
+ delete this;
+ //else: the object which processed the event is responsible for deleting
+ // us!
+}
+
+void wxProcess::Detach()
+{
+ // we just detach from the next handler of the chain (i.e. our "parent" -- see ctor)
+ // not also from the previous handler like wxEvtHandler::Unlink() would do:
+
+ if (m_nextHandler)
+ m_nextHandler->SetPreviousHandler(m_previousHandler);
+
+ m_nextHandler = NULL;
+}
+
+// ----------------------------------------------------------------------------
+// process IO redirection
+// ----------------------------------------------------------------------------
+
+#if wxUSE_STREAMS
+
+void wxProcess::SetPipeStreams(wxInputStream *inputSstream,
+ wxOutputStream *outputStream,
+ wxInputStream *errorStream)
+{
+ m_inputStream = inputSstream;
+ m_errorStream = errorStream;
+ m_outputStream = outputStream;
+}
+
+bool wxProcess::IsInputOpened() const
+{
+ return m_inputStream && m_inputStream->GetLastError() != wxSTREAM_EOF;
+}
+
+bool wxProcess::IsInputAvailable() const
+{
+ return m_inputStream && m_inputStream->CanRead();
+}
+
+bool wxProcess::IsErrorAvailable() const
+{
+ return m_errorStream && m_errorStream->CanRead();
+}
+
+#endif // wxUSE_STREAMS
+
+// ----------------------------------------------------------------------------
+// process killing
+// ----------------------------------------------------------------------------
+
+/* static */
+wxKillError wxProcess::Kill(int pid, wxSignal sig, int flags)
+{
+ wxKillError rc;
+ (void)wxKill(pid, sig, &rc, flags);
+
+ return rc;
+}
+
+/* static */
+bool wxProcess::Exists(int pid)
+{
+ switch ( Kill(pid, wxSIGNONE) )
+ {
+ case wxKILL_OK:
+ case wxKILL_ACCESS_DENIED:
+ return true;
+
+ default:
+ case wxKILL_ERROR:
+ case wxKILL_BAD_SIGNAL:
+ wxFAIL_MSG( wxT("unexpected wxProcess::Kill() return code") );
+ // fall through
+
+ case wxKILL_NO_PROCESS:
+ return false;
+ }
+}
+
+void wxProcess::SetPriority(unsigned priority)
+{
+ wxCHECK_RET( priority <= wxPRIORITY_MAX,
+ wxS("Invalid process priority value.") );
- ProcessEvent(event);
+ m_priority = priority;
}