src/socketengine.cpp

   1 #include "inspircd_config.h"
   2 #include "globals.h"
   3 #include "inspircd.h"
   4 #ifdef USE_EPOLL
   5 #include <sys/epoll.h>
   6 #define EP_DELAY 5
   7 #endif
   8 #ifdef USE_KQUEUE
   9 #include <sys/types.h>
  10 #include <sys/event.h>
  11 #include <sys/time.h>
  12 #endif
  13 #include <vector>
  14 #include <string>
  15 #include "socketengine.h"
  16
  17 char ref[65535];
  18
  19 const char X_LISTEN             = 0;
  20 const char X_ESTAB_CLIENT       = 1;
  21 const char X_ESTAB_MODULE       = 2;
  22 const char X_ESTAB_DNS          = 3;
  23
  24 const char X_READBIT            = 0x80;
  25
  26 SocketEngine::SocketEngine()
  27 {
  28 #ifdef USE_EPOLL
  29         EngineHandle = epoll_create(65535);
  30 #endif
  31 #ifdef USE_KQUEUE
  32         EngineHandle = kqueue();
  33 #endif
  34 }
  35
  36 SocketEngine::~SocketEngine()
  37 {
  38 #ifdef USE_EPOLL
  39         close(EngineHandle);
  40 #endif
  41 #ifdef USE_KQUEUE
  42         close(EngineHandle);
  43 #endif
  44 }
  45
  46 bool SocketEngine::AddFd(int fd, bool readable, char type)
  47 {
  48         this->fds.push_back(fd);
  49         if (readable)
  50                 ref[fd] |= X_READBIT;
  51 #ifdef USE_EPOLL
  52         struct epoll_event ev;
  53         log(DEBUG,"epoll: Adduser to events, ep=%d socket=%d",EngineHandle,fd);
  54         readable ? ev.events = EPOLLIN | EPOLLET : ev.events = EPOLLOUT | EPOLLET;
  55         ev.data.fd = fd;
  56         int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
  57         if (i < 0)
  58         {
  59                 log(DEBUG,"epoll: List insertion failure!");
  60                 return false;
  61         }
  62 #endif
  63 #ifdef USE_KQUEUE
  64         struct kevent ke;
  65         log(DEBUG,"kqueue: Add user to events, kq=%d socket=%d",EngineHandle,fd);
  66         EV_SET(&ke, fd, readable ? EVFILT_READ : EVFILT_WRITE, EV_ADD, 0, 0, NULL);
  67         int i = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
  68         if (i == -1)
  69         {
  70                 log(DEBUG,"kqueue: List insertion failure!");
  71                 return false;
  72         }
  73 #endif
  74 return true;
  75 }
  76
  77 bool SocketEngine::DelFd(int fd)
  78 {
  79         bool found = false;
  80         for (std::vector<int>::iterator i = fds.begin(); i != fds.end(); i++)
  81         {
  82                 if (*i == fd)
  83                 {
  84                         fds.erase(i);
  85                         found = true;
  86                 }
  87         }
  88 #ifdef USE_KQUEUE
  89         struct kevent ke;
  90         EV_SET(&ke, fd, ref[fd] && X_READBIT ? EVFILT_READ : EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
  91         int i = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
  92         if (i == -1)
  93         {
  94                 log(DEBUG,"kqueue: Failed to remove user from queue!");
  95                 return false;
  96         }
  97 #endif
  98 #ifdef USE_EPOLL
  99         struct epoll_event ev;
 100         ref[fd] && X_READBIT ? ev.events = EPOLLIN | EPOLLET : ev.events = EPOLLOUT | EPOLLET;
 101         ev.data.fd = fd;
 102         int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
 103         if (i < 0)
 104         {
 105                 log(DEBUG,"epoll: List deletion failure!");
 106                 return false;
 107         }
 108 #endif
 109         ref[fd] = 0;
 110         return found;
 111 }
 112
 113 bool SocketEngine::Wait(std::vector<int> &fdlist)
 114 {
 115         fdlist.clear();
 116 #ifdef USE_SELECT
 117         int highest_fd = 0;
 118         timeval tval;
 119         int sresult;
 120         for (unsigned int a = 0; a < fds.size(); a++)
 121         {
 122                 if (ref[fds[a]] && X_READBIT)
 123                 {
 124                         FD_SET (fds[a], &rfdset);
 125                 }
 126                 else
 127                 {
 128                         FD_SET (fds[a], &wfdset);
 129                 }
 130
 131         }
 132         tval.tv_sec = 0;
 133         tval.tv_usec = 1000L;
 134         sresult = select(FD_SETSIZE, &rfdset, &wfdset, NULL, &tval);
 135         if (sresult > 0)
 136         {
 137                 for (unsigned int a = 0; a < fds.size(); a++)
 138                 {
 139                         if ((FD_ISSET (fds[a], &rfdset)) || (FD_ISSET (fds[a], &wfdset)))
 140                                 fdlist.push_back(fds[a]);
 141                 }
 142         }
 143 #endif
 144 #ifdef USE_KQUEUE
 145         ts.tv_nsec = 1000L;
 146         ts.tv_sec = 0;
 147         int i = kevent(EngineHandle, NULL, 0, &ke_list[0], 65535, &ts);
 148         for (int j = 0; j < i; j++)
 149                 fdlist.push_back(ke_list[j].ident);
 150 #endif
 151 #ifdef USE_EPOLL
 152         int i = epoll_wait(EngineHandle, events, 65535, 1);
 153         for (int j = 0; j < i; j++)
 154                 fdlist.push_back(event[0].data.fd);
 155 #endif
 156         return true;
 157 }
 158
 159 std::string SocketEngine::GetName()
 160 {
 161 #ifdef USE_SELECT
 162         return "select";
 163 #endif
 164 #ifdef USE_KQUEUE
 165         return "kqueue";
 166 #endif
 167 #ifdef USE_EPOLL
 168         return "epoll";
 169 #endif
 170         return "misconfigured";
 171 }