]> git.saurik.com Git - wxWidgets.git/blame_incremental - src/common/process.cpp
Applied patch [ 828303 ] Slight wxColour cleanup
[wxWidgets.git] / src / common / process.cpp
... / ...
CommitLineData
1/////////////////////////////////////////////////////////////////////////////
2// Name: process.cpp
3// Purpose: Process termination classes
4// Author: Guilhem Lavaux
5// Modified by: Vadim Zeitlin to check error codes, added Detach() method
6// Created: 24/06/98
7// RCS-ID: $Id$
8// Copyright: (c) Guilhem Lavaux
9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12// ============================================================================
13// declarations
14// ============================================================================
15
16// ----------------------------------------------------------------------------
17// headers
18// ----------------------------------------------------------------------------
19
20#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
21 #pragma implementation "process.h"
22#endif
23
24// For compilers that support precompilation, includes "wx.h".
25#include "wx/wxprec.h"
26
27#ifdef __BORLANDC__
28 #pragma hdrstop
29#endif
30
31#include "wx/process.h"
32
33// ----------------------------------------------------------------------------
34// event tables and such
35// ----------------------------------------------------------------------------
36
37DEFINE_EVENT_TYPE(wxEVT_END_PROCESS)
38
39IMPLEMENT_DYNAMIC_CLASS(wxProcess, wxEvtHandler)
40IMPLEMENT_DYNAMIC_CLASS(wxProcessEvent, wxEvent)
41
42// ============================================================================
43// wxProcess implementation
44// ============================================================================
45
46// ----------------------------------------------------------------------------
47// wxProcess creation
48// ----------------------------------------------------------------------------
49
50void wxProcess::Init(wxEvtHandler *parent, int id, int flags)
51{
52 if ( parent )
53 SetNextHandler(parent);
54
55 m_id = id;
56 m_redirect = (flags & wxPROCESS_REDIRECT) != 0;
57
58#if wxUSE_STREAMS
59 m_inputStream = NULL;
60 m_errorStream = NULL;
61 m_outputStream = NULL;
62#endif // wxUSE_STREAMS
63}
64
65/* static */
66wxProcess *wxProcess::Open(const wxString& cmd, int flags)
67{
68 wxASSERT_MSG( !(flags & wxEXEC_SYNC), wxT("wxEXEC_SYNC should not be used." ));
69 wxProcess *process = new wxProcess(wxPROCESS_REDIRECT);
70 if ( !wxExecute(cmd, flags, process) )
71 {
72 // couldn't launch the process
73 delete process;
74 return NULL;
75 }
76
77 return process;
78}
79
80// ----------------------------------------------------------------------------
81// wxProcess termination
82// ----------------------------------------------------------------------------
83
84wxProcess::~wxProcess()
85{
86#if wxUSE_STREAMS
87 delete m_inputStream;
88 delete m_errorStream;
89 delete m_outputStream;
90#endif // wxUSE_STREAMS
91}
92
93void wxProcess::OnTerminate(int pid, int status)
94{
95 wxProcessEvent event(m_id, pid, status);
96
97 if ( !ProcessEvent(event) )
98 delete this;
99 //else: the object which processed the event is responsible for deleting
100 // us!
101}
102
103void wxProcess::Detach()
104{
105 SetNextHandler(NULL);
106}
107
108// ----------------------------------------------------------------------------
109// process IO redirection
110// ----------------------------------------------------------------------------
111
112#if wxUSE_STREAMS
113
114void wxProcess::SetPipeStreams(wxInputStream *inputSstream,
115 wxOutputStream *outputStream,
116 wxInputStream *errorStream)
117{
118 m_inputStream = inputSstream;
119 m_errorStream = errorStream;
120 m_outputStream = outputStream;
121}
122
123bool wxProcess::IsInputOpened() const
124{
125 return m_inputStream && m_inputStream->GetLastError() != wxSTREAM_EOF;
126}
127
128bool wxProcess::IsInputAvailable() const
129{
130 return m_inputStream && m_inputStream->CanRead();
131}
132
133bool wxProcess::IsErrorAvailable() const
134{
135 return m_errorStream && m_errorStream->CanRead();
136}
137
138#endif // wxUSE_STREAMS
139
140// ----------------------------------------------------------------------------
141// process killing
142// ----------------------------------------------------------------------------
143
144/* static */
145wxKillError wxProcess::Kill(int pid, wxSignal sig)
146{
147 wxKillError rc;
148 (void)wxKill(pid, sig, &rc);
149
150 return rc;
151}
152
153/* static */
154bool wxProcess::Exists(int pid)
155{
156 switch ( Kill(pid, wxSIGNONE) )
157 {
158 case wxKILL_OK:
159 case wxKILL_ACCESS_DENIED:
160 return TRUE;
161
162 default:
163 case wxKILL_ERROR:
164 case wxKILL_BAD_SIGNAL:
165 wxFAIL_MSG( _T("unexpected wxProcess::Kill() return code") );
166 // fall through
167
168 case wxKILL_NO_PROCESS:
169 return FALSE;
170 }
171}
172