src/mac/thread.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        thread.cpp
   3 // Purpose:     wxThread Implementation. For Unix ports, see e.g. src/gtk
   4 // Author:      Original from Wolfram Gloger/Guilhem Lavaux
   5 // Modified by:
   6 // Created:     04/22/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Wolfram Gloger (1996, 1997); Guilhem Lavaux (1998)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "thread.h"
  14 #endif
  15
  16 #include "wx/module.h"
  17 #include "wx/thread.h"
  18 #include "wx/utils.h"
  19
  20 enum thread_state {
  21   STATE_IDLE = 0,
  22   STATE_RUNNING,
  23   STATE_CANCELED,
  24   STATE_EXITED
  25 };
  26
  27 /////////////////////////////////////////////////////////////////////////////
  28 // Static variables
  29 /////////////////////////////////////////////////////////////////////////////
  30
  31 wxMutex *wxMainMutex; // controls access to all GUI functions
  32
  33 /////////////////////////////////////////////////////////////////////////////
  34 // Windows implementation
  35 /////////////////////////////////////////////////////////////////////////////
  36
  37 class wxMutexInternal {
  38 public:
  39   // TODO: internal mutex handle
  40 };
  41
  42 wxMutex::wxMutex()
  43 {
  44     p_internal = new wxMutexInternal;
  45     // TODO: create internal mutext handle
  46     m_locked = 0;
  47 }
  48
  49 wxMutex::~wxMutex()
  50 {
  51     if (m_locked > 0)
  52         wxDebugMsg("wxMutex warning: freeing a locked mutex (%d locks)\n", m_locked);
  53     // TODO: free internal mutext handle
  54 }
  55
  56 wxMutexError wxMutex::Lock()
  57 {
  58     // TODO
  59     m_locked++;
  60     return wxMUTEX_NO_ERROR;
  61 }
  62
  63 wxMutexError wxMutex::TryLock()
  64 {
  65     // TODO
  66     m_locked++;
  67     return wxMUTEX_NO_ERROR;
  68 }
  69
  70 wxMutexError wxMutex::Unlock()
  71 {
  72     if (m_locked > 0)
  73         m_locked--;
  74
  75     // TODO
  76     return wxMUTEX_NO_ERROR;
  77 }
  78
  79 class wxConditionInternal {
  80 public:
  81   // TODO: internal handle
  82   int waiters;
  83 };
  84
  85 wxCondition::wxCondition()
  86 {
  87     p_internal = new wxConditionInternal;
  88     // TODO: create internal handle
  89     p_internal->waiters = 0;
  90 }
  91
  92 wxCondition::~wxCondition()
  93 {
  94     // TODO: destroy internal handle
  95 }
  96
  97 void wxCondition::Wait(wxMutex& mutex)
  98 {
  99     mutex.Unlock();
 100     p_internal->waiters++;
 101     // TODO wait here
 102     p_internal->waiters--;
 103     mutex.Lock();
 104 }
 105
 106 bool wxCondition::Wait(wxMutex& mutex, unsigned long sec,
 107                        unsigned long nsec)
 108 {
 109     mutex.Unlock();
 110     p_internal->waiters++;
 111
 112     // TODO wait here
 113     p_internal->waiters--;
 114     mutex.Lock();
 115
 116     return FALSE;
 117 }
 118
 119 void wxCondition::Signal()
 120 {
 121     // TODO
 122 }
 123
 124 void wxCondition::Broadcast()
 125 {
 126     // TODO
 127 }
 128
 129 class wxThreadInternal {
 130 public:
 131     // TODO
 132 };
 133
 134 wxThreadError wxThread::Create()
 135 {
 136     // TODO
 137     return wxTHREAD_NO_ERROR;
 138 }
 139
 140 wxThreadError wxThread::Destroy()
 141 {
 142     // TODO
 143     return wxTHREAD_NO_ERROR;
 144 }
 145
 146 wxThreadError wxThread::Pause()
 147 {
 148     // TODO
 149     return wxTHREAD_NO_ERROR;
 150 }
 151
 152 wxThreadError wxThread::Resume()
 153 {
 154     // TODO
 155     return wxTHREAD_NO_ERROR;
 156 }
 157
 158 void wxThread::Exit(void *status)
 159 {
 160     // TODO
 161 }
 162
 163 void wxThread::SetPriority(int prio)
 164 {
 165     // TODO
 166 }
 167
 168 int wxThread::GetPriority() const
 169 {
 170     // TODO
 171     return 0;
 172 }
 173
 174 void wxThread::DeferDestroy(bool on)
 175 {
 176     // TODO
 177 }
 178
 179 void wxThread::TestDestroy()
 180 {
 181     // TODO
 182 }
 183
 184 void *wxThread::Join()
 185 {
 186     // TODO
 187     return (void*) NULL;
 188 }
 189
 190 unsigned long wxThread::GetID() const
 191 {
 192     // TODO
 193     return 0;
 194 }
 195
 196 /* is this needed somewhere ?
 197 wxThread *wxThread::GetThreadFromID(unsigned long id)
 198 {
 199     // TODO
 200     return NULL;
 201 }
 202 */
 203
 204 bool wxThread::IsAlive() const
 205 {
 206     // TODO
 207     return FALSE;
 208 }
 209
 210 bool wxThread::IsRunning() const
 211 {
 212     // TODO
 213     return FALSE;
 214 }
 215
 216 bool wxThread::IsMain()
 217 {
 218     // TODO
 219     return FALSE;
 220 }
 221
 222 wxThread::wxThread()
 223 {
 224     p_internal = new wxThreadInternal();
 225
 226     // TODO
 227 }
 228
 229 wxThread::~wxThread()
 230 {
 231     Destroy();
 232     Join();
 233     delete p_internal;
 234 }
 235
 236 // The default callback just joins the thread and throws away the result.
 237 void wxThread::OnExit()
 238 {
 239     Join();
 240 }
 241
 242 // Automatic initialization
 243 class wxThreadModule : public wxModule {
 244   DECLARE_DYNAMIC_CLASS(wxThreadModule)
 245 public:
 246   virtual bool OnInit() {
 247     /* TODO p_mainid = GetCurrentThread(); */
 248     wxMainMutex = new wxMutex();
 249     wxMainMutex->Lock();
 250     return TRUE;
 251   }
 252
 253   // Global cleanup
 254   virtual void OnExit() {
 255     wxMainMutex->Unlock();
 256     delete wxMainMutex;
 257   }
 258 };
 259
 260 IMPLEMENT_DYNAMIC_CLASS(wxThreadModule, wxModule)
 261