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