]>
Commit | Line | Data |
---|---|---|
1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: ipcbase.cpp | |
3 | // Purpose: IPC base classes | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 04/01/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // For compilers that support precompilation, includes "wx.h". | |
13 | #include "wx/wxprec.h" | |
14 | ||
15 | #ifdef __BORLANDC__ | |
16 | #pragma hdrstop | |
17 | #endif | |
18 | ||
19 | #ifndef WX_PRECOMP | |
20 | #include "wx/defs.h" | |
21 | #endif | |
22 | ||
23 | #include "wx/ipcbase.h" | |
24 | ||
25 | IMPLEMENT_CLASS(wxServerBase, wxObject) | |
26 | IMPLEMENT_CLASS(wxClientBase, wxObject) | |
27 | IMPLEMENT_CLASS(wxConnectionBase, wxObject) | |
28 | ||
29 | wxConnectionBase::wxConnectionBase(wxChar *buffer, int bytes) | |
30 | : m_connected(true), | |
31 | m_buffer(buffer), | |
32 | m_buffersize(bytes), | |
33 | m_deletebufferwhendone(false) | |
34 | { | |
35 | if ( buffer == (wxChar *)NULL ) | |
36 | { // behave like next constructor | |
37 | m_buffersize = 0; | |
38 | m_deletebufferwhendone = true; | |
39 | } | |
40 | } | |
41 | ||
42 | wxConnectionBase::wxConnectionBase() | |
43 | : m_connected(true), | |
44 | m_buffer(NULL), | |
45 | m_buffersize(0), | |
46 | m_deletebufferwhendone(true) | |
47 | { | |
48 | } | |
49 | ||
50 | wxConnectionBase::wxConnectionBase(const wxConnectionBase& copy) | |
51 | : wxObject(), | |
52 | m_connected(copy.m_connected), | |
53 | m_buffer(copy.m_buffer), | |
54 | m_buffersize(copy.m_buffersize), | |
55 | m_deletebufferwhendone(false) | |
56 | ||
57 | { | |
58 | // copy constructor would require ref-counted pointer to buffer | |
59 | wxFAIL_MSG( _T("Copy constructor of wxConnectionBase not implemented") ); | |
60 | } | |
61 | ||
62 | ||
63 | wxConnectionBase::~wxConnectionBase(void) | |
64 | { | |
65 | if ( m_deletebufferwhendone && m_buffer ) | |
66 | delete m_buffer; | |
67 | } | |
68 | ||
69 | wxChar *wxConnectionBase::GetBufferAtLeast( size_t bytes ) | |
70 | { | |
71 | if ( m_buffersize >= bytes ) | |
72 | return m_buffer; | |
73 | else | |
74 | { // need to resize buffer | |
75 | if ( m_deletebufferwhendone ) | |
76 | { // we're in charge of buffer, increase it | |
77 | if ( m_buffer ) | |
78 | delete m_buffer; | |
79 | // the argument specifies **byte size**, but m_buffer is of type | |
80 | // wxChar. Under unicode: sizeof(wxChar) > 1, so the buffer size is | |
81 | // bytes / sizeof(wxChar) rounded upwards. | |
82 | m_buffer = new wxChar[(bytes + sizeof(wxChar) - 1) / sizeof(wxChar)]; | |
83 | m_buffersize = bytes; | |
84 | return m_buffer; | |
85 | } // user-supplied buffer, fail | |
86 | else | |
87 | return NULL; | |
88 | } | |
89 | } | |
90 |