src/socketengine.cpp

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