-/* +------------------------------------+\r * | Inspire Internet Relay Chat Daemon |\r * +------------------------------------+\r *\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team\r * See: http://www.inspircd.org/wiki/index.php/Credits\r *\r * This program is free but copyrighted software; see\r * the file COPYING for details.\r *\r * ---------------------------------------------------\r */\r\r#include "inspircd.h"\r#include <sys/select.h>\r#include "socketengine_select.h"\r\r\rSelectEngine::SelectEngine(InspIRCd* Instance) : SocketEngine(Instance)\r{\r EngineHandle = 0;\r CurrentSetSize = 0;\r memset(writeable, 0, sizeof(writeable));\r}\r\rSelectEngine::~SelectEngine()\r{\r}\r\rbool SelectEngine::AddFd(EventHandler* eh)\r{\r int fd = eh->GetFd();\r if ((fd < 0) || (fd > MAX_DESCRIPTORS))\r return false;\r\r if (GetRemainingFds() <= 1)\r return false;\r\r fds[fd] = fd;\r\r if (ref[fd])\r return false;\r\r ref[fd] = eh;\r\r CurrentSetSize++;\r\r ServerInstance->Log(DEBUG,"New file descriptor: %d", fd);\r return true;\r}\r\rvoid SelectEngine::WantWrite(EventHandler* eh)\r{\r writeable[eh->GetFd()] = true;\r}\r\rbool SelectEngine::DelFd(EventHandler* eh, bool force)\r{\r int fd = eh->GetFd();\r\r if ((fd < 0) || (fd > MAX_DESCRIPTORS))\r return false;\r\r std::map<int,int>::iterator t = fds.find(fd);\r if (t != fds.end())\r fds.erase(t);\r\r CurrentSetSize--;\r ref[fd] = NULL;\r\r ServerInstance->Log(DEBUG,"Remove file descriptor: %d", fd);\r return true;\r}\r\rint SelectEngine::GetMaxFds()\r{\r return FD_SETSIZE;\r}\r\rint SelectEngine::GetRemainingFds()\r{\r return FD_SETSIZE - CurrentSetSize;\r}\r\rint SelectEngine::DispatchEvents()\r{\r int result = 0;\r timeval tval;\r int sresult = 0;\r EventHandler* ev[MAX_DESCRIPTORS];\r socklen_t codesize;\r int errcode;\r\r FD_ZERO(&wfdset);\r FD_ZERO(&rfdset);\r FD_ZERO(&errfdset);\r\r for (std::map<int,int>::iterator a = fds.begin(); a != fds.end(); a++)\r {\r if (ref[a->second]->Readable())\r FD_SET (a->second, &rfdset);\r else\r FD_SET (a->second, &wfdset);\r if (writeable[a->second])\r FD_SET (a->second, &wfdset);\r\r FD_SET (a->second, &errfdset);\r }\r tval.tv_sec = 1;\r tval.tv_usec = 0;\r sresult = select(FD_SETSIZE, &rfdset, &wfdset, &errfdset, &tval);\r if (sresult > 0)\r {\r for (std::map<int,int>::iterator a = fds.begin(); a != fds.end(); a++)\r {\r if ((FD_ISSET (a->second, &rfdset)) || (FD_ISSET (a->second, &wfdset)) || FD_ISSET (a->second, &errfdset))\r {\r ev[result++] = ref[a->second];\r }\r }\r }\r\r /** An event handler may remove its own descriptor from the list, therefore it is not\r * safe to directly iterate over the list and dispatch events there with STL iterators.\r * Thats a shame because it makes this code slower and more resource intensive, but maybe\r * the user should stop using select(), as select() smells anyway.\r */\r for (int i = 0; i < result; i++)\r {\r if (ev[i])\r {\r if (FD_ISSET (ev[i]->GetFd(), &errfdset))\r {\r if (ev[i])\r {\r if (getsockopt(ev[i]->GetFd(), SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)\r errcode = errno;\r\r ev[i]->HandleEvent(EVENT_ERROR, errcode);\r }\r continue;\r }\r if (ev[i])\r {\r if (writeable[ev[i]->GetFd()])\r {\r if (ev[i])\r ev[i]->HandleEvent(EVENT_WRITE);\r writeable[ev[i]->GetFd()] = false;\r\r }\r else\r {\r if (ev[i])\r ev[i]->HandleEvent(ev[i]->Readable() ? EVENT_READ : EVENT_WRITE);\r }\r }\r }\r }\r\r return result;\r}\r\rstd::string SelectEngine::GetName()\r{\r return "select";\r}\r
\ No newline at end of file
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+#include <sys/select.h>
+#include "socketengine_select.h"
+
+
+SelectEngine::SelectEngine(InspIRCd* Instance) : SocketEngine(Instance)
+{
+ EngineHandle = 0;
+ CurrentSetSize = 0;
+ memset(writeable, 0, sizeof(writeable));
+}
+
+SelectEngine::~SelectEngine()
+{
+}
+
+bool SelectEngine::AddFd(EventHandler* eh)
+{
+ int fd = eh->GetFd();
+ if ((fd < 0) || (fd > MAX_DESCRIPTORS))
+ return false;
+
+ if (GetRemainingFds() <= 1)
+ return false;
+
+ fds[fd] = fd;
+
+ if (ref[fd])
+ return false;
+
+ ref[fd] = eh;
+
+ CurrentSetSize++;
+
+ ServerInstance->Log(DEBUG,"New file descriptor: %d", fd);
+ return true;
+}
+
+void SelectEngine::WantWrite(EventHandler* eh)
+{
+ writeable[eh->GetFd()] = true;
+}
+
+bool SelectEngine::DelFd(EventHandler* eh, bool force)
+{
+ int fd = eh->GetFd();
+
+ if ((fd < 0) || (fd > MAX_DESCRIPTORS))
+ return false;
+
+ std::map<int,int>::iterator t = fds.find(fd);
+ if (t != fds.end())
+ fds.erase(t);
+
+ CurrentSetSize--;
+ ref[fd] = NULL;
+
+ ServerInstance->Log(DEBUG,"Remove file descriptor: %d", fd);
+ return true;
+}
+
+int SelectEngine::GetMaxFds()
+{
+ return FD_SETSIZE;
+}
+
+int SelectEngine::GetRemainingFds()
+{
+ return FD_SETSIZE - CurrentSetSize;
+}
+
+int SelectEngine::DispatchEvents()
+{
+ int result = 0;
+ timeval tval;
+ int sresult = 0;
+ EventHandler* ev[MAX_DESCRIPTORS];
+ socklen_t codesize;
+ int errcode;
+
+ FD_ZERO(&wfdset);
+ FD_ZERO(&rfdset);
+ FD_ZERO(&errfdset);
+
+ for (std::map<int,int>::iterator a = fds.begin(); a != fds.end(); a++)
+ {
+ if (ref[a->second]->Readable())
+ FD_SET (a->second, &rfdset);
+ else
+ FD_SET (a->second, &wfdset);
+ if (writeable[a->second])
+ FD_SET (a->second, &wfdset);
+
+ FD_SET (a->second, &errfdset);
+ }
+ tval.tv_sec = 1;
+ tval.tv_usec = 0;
+ sresult = select(FD_SETSIZE, &rfdset, &wfdset, &errfdset, &tval);
+ if (sresult > 0)
+ {
+ for (std::map<int,int>::iterator a = fds.begin(); a != fds.end(); a++)
+ {
+ if ((FD_ISSET (a->second, &rfdset)) || (FD_ISSET (a->second, &wfdset)) || FD_ISSET (a->second, &errfdset))
+ {
+ ev[result++] = ref[a->second];
+ }
+ }
+ }
+
+ /** An event handler may remove its own descriptor from the list, therefore it is not
+ * safe to directly iterate over the list and dispatch events there with STL iterators.
+ * Thats a shame because it makes this code slower and more resource intensive, but maybe
+ * the user should stop using select(), as select() smells anyway.
+ */
+ for (int i = 0; i < result; i++)
+ {
+ if (ev[i])
+ {
+ if (FD_ISSET (ev[i]->GetFd(), &errfdset))
+ {
+ if (ev[i])
+ {
+ if (getsockopt(ev[i]->GetFd(), SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
+ errcode = errno;
+
+ ev[i]->HandleEvent(EVENT_ERROR, errcode);
+ }
+ continue;
+ }
+ if (ev[i])
+ {
+ if (writeable[ev[i]->GetFd()])
+ {
+ writeable[ev[i]->GetFd()] = false;
+ if (ev[i])
+ ev[i]->HandleEvent(EVENT_WRITE);
+ }
+ else
+ {
+ if (ev[i])
+ ev[i]->HandleEvent(ev[i]->Readable() ? EVENT_READ : EVENT_WRITE);
+ }
+ }
+ }
+ }
+
+ return result;
+}
+
+std::string SelectEngine::GetName()
+{
+ return "select";
+}
projects / user / henk / code / inspircd.git / blobdiff