1 unit lcorewsaasyncselect;
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7 uses wcore,lcore,bsearchtree,sysutils,windows,winsock,pgtypes,messages,classes,lsocket;
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9 twineventcore=class(teventcore)
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11 procedure processmessages; override;
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12 procedure messageloop; override;
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13 procedure exitmessageloop;override;
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14 procedure setfdreverse(fd : integer;reverseto : tlasio); override;
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15 procedure rmasterset(fd : integer;islistensocket : boolean); override;
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16 procedure rmasterclr(fd: integer); override;
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17 procedure wmasterset(fd : integer); override;
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18 procedure wmasterclr(fd: integer); override;
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21 wm_dotasks=wm_user+1;
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23 twintimerwrapperinterface=class(ttimerwrapperinterface)
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25 function createwrappedtimer : tobject;override;
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26 // procedure setinitialevent(wrappedtimer : tobject;newvalue : boolean);override;
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27 procedure setontimer(wrappedtimer : tobject;newvalue:tnotifyevent);override;
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28 procedure setenabled(wrappedtimer : tobject;newvalue : boolean);override;
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29 procedure setinterval(wrappedtimer : tobject;newvalue : integer);override;
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32 procedure twineventcore.processmessages;
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34 wcore.processmessages;//pass off to wcore
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36 procedure twineventcore.messageloop;
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38 wcore.messageloop; //pass off to wcore
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40 procedure twineventcore.exitmessageloop;
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42 wcore.exitmessageloop;
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45 fdreverse : thashtable;
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46 fdwatches : thashtable;
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48 procedure twineventcore.setfdreverse(fd : integer;reverseto : tlasio);
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50 if findtree(@fdreverse,inttostr(fd)) <> nil then deltree(@fdreverse,inttostr(fd));
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51 if reverseto <> nil then addtree(@fdreverse,inttostr(fd),reverseto);
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56 procedure dowsaasyncselect(fd:integer; leventadd: integer; leventremove : integer);
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58 leventold : integer;
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59 leventnew : integer;
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60 wsaaresult : integer;
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62 leventold := taddrint(findtree(@fdwatches,inttostr(fd)));
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63 leventnew := leventold or leventadd;
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64 leventnew := leventnew and not leventremove;
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65 if leventold <> leventnew then begin
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66 if leventold <> 0 then deltree(@fdwatches,inttostr(fd));
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67 if leventnew <> 0 then addtree(@fdwatches,inttostr(fd),pointer(leventnew));
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69 wsaaresult := wsaasyncselect(fd,hwndlcore,wm_user,leventnew);
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74 //to allow detection of errors:
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75 //if we are asked to monitor for read or accept we also monitor for close
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76 //if we are asked to monitor for write we also monitor for connect
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79 procedure twineventcore.rmasterset(fd : integer;islistensocket : boolean);
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81 if islistensocket then begin
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82 // writeln('setting accept watch for socket number ',fd);
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83 dowsaasyncselect(fd,FD_ACCEPT or FD_CLOSE,0);
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85 // writeln('setting read watch for socket number',fd);
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86 dowsaasyncselect(fd,FD_READ or FD_CLOSE,0);
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89 procedure twineventcore.rmasterclr(fd: integer);
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91 //writeln('clearing read of accept watch for socket number ',fd);
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92 dowsaasyncselect(fd,0,FD_ACCEPT or FD_READ or FD_CLOSE);
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94 procedure twineventcore.wmasterset(fd : integer);
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96 dowsaasyncselect(fd,FD_WRITE or FD_CONNECT,0);
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99 procedure twineventcore.wmasterclr(fd: integer);
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101 dowsaasyncselect(fd,0,FD_WRITE or FD_CONNECT);
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105 tasksoutstanding : boolean;
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107 function MyWindowProc(
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111 alParam : LPARAM): Integer; stdcall;
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116 readtrigger : boolean;
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117 writetrigger : boolean;
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120 // writeln('got a message');
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121 Result := 0; // This means we handled the message
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122 if (ahwnd=hwndlcore) and (aumsg=wm_user) then begin
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123 // writeln('it appears to be a response to our wsaasyncselect');
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125 event := alparam and $FFFF;
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126 error := alparam shr 16;
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127 // writeln('socket=',socket,' event=',event,' error=',error);
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128 readtrigger := false;
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129 writetrigger := false;
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130 lasio := findtree(@fdreverse,inttostr(socket));
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131 if assigned(lasio) then begin
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132 if (error <> 0) or ((event and FD_CLOSE) <> 0) then begin
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133 if (lasio.state = wsconnecting) and (error <> 0) then begin
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134 if lasio is tlsocket then tlsocket(lasio).connectionfailedhandler(error)
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136 lasio.internalclose(error);
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139 if (event and (FD_READ or FD_ACCEPT)) <> 0 then readtrigger := true;
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140 if (event and (FD_WRITE)) <> 0 then writetrigger := true;
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142 if readtrigger or writetrigger then lasio.handlefdtrigger(readtrigger,writetrigger);
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144 // don't reset the event manually for listen sockets to avoid unwanted
145 // extra onsessionavailible events
146 if (taddrint(findtree(@fdwatches,inttostr(fd))) and FD_ACCEPT) = 0 dowsaasyncselect(socket,0,0); // if not a listen socket reset watches
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148 end else if (ahwnd=hwndlcore) and (aumsg=wm_dotasks) then begin
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149 //writeln('processing tasks');
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150 tasksoutstanding := false;
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153 //writeln('passing unknown message to defwindowproc');
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154 //not passing unknown messages on to defwindowproc will cause window
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155 //creation to fail! --plugwash
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156 Result := DefWindowProc(ahWnd, auMsg, awParam, alParam)
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161 procedure winaddtask(ahandler:ttaskevent;aobj:tobject;awparam,alparam:longint);
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163 if not tasksoutstanding then PostMessage(hwndlcore,wm_dotasks,0,0);
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166 twcoretimer = wcore.tltimer;
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168 function twintimerwrapperinterface.createwrappedtimer : tobject;
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170 result := twcoretimer.create(nil);
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172 procedure twintimerwrapperinterface.setontimer(wrappedtimer : tobject;newvalue:tnotifyevent);
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174 twcoretimer(wrappedtimer).ontimer := newvalue;
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176 procedure twintimerwrapperinterface.setenabled(wrappedtimer : tobject;newvalue : boolean);
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178 twcoretimer(wrappedtimer).enabled := newvalue;
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182 procedure twintimerwrapperinterface.setinterval(wrappedtimer : tobject;newvalue : integer);
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184 twcoretimer(wrappedtimer).interval := newvalue;
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188 MyWindowClass : TWndClass = (style : 0;
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189 lpfnWndProc : @MyWindowProc;
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196 lpszMenuName : nil;
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197 lpszClassName : 'lcoreClass');
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198 GInitData: TWSAData;
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201 eventcore := twineventcore.create;
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202 if Windows.RegisterClass(MyWindowClass) = 0 then halt;
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203 //writeln('about to create lcore handle, hinstance=',hinstance);
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204 hwndlcore := CreateWindowEx(WS_EX_TOOLWINDOW,
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205 MyWindowClass.lpszClassName,
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206 '', { Window name }
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207 WS_POPUP, { Window Style }
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209 0, 0, { Width, Height }
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212 HInstance, { hInstance }
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213 nil); { CreateParam }
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214 //writeln('lcore hwnd is ',hwndlcore);
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215 //writeln('last error is ',GetLastError);
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216 onaddtask := winaddtask;
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217 timerwrapperinterface := twintimerwrapperinterface.create(nil);
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219 WSAStartup($200, GInitData);
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220 absoloutemaxs := maxlongint;
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