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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* s_bsd_kqueue.c: FreeBSD kqueue compatible network routines. |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Originally by Adrian Chadd <adrian@creative.net.au> |
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* Copyright (C) 2005 Hybrid Development Team |
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* Copyright (c) 2000-2016 ircd-hybrid development team |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
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* |
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* $Id$ |
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*/ |
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|
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/*! \file s_bsd_kqueue.c |
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* \brief kqueue() compatible network routines. |
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* \version $Id$ |
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*/ |
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#include "stdinc.h" |
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#if USE_IOPOLL_MECHANISM == __IOPOLL_MECHANISM_KQUEUE |
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#include <sys/event.h> |
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#include "fdlist.h" |
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#include "ircd.h" |
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#include "memory.h" |
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#include "s_bsd.h" |
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#include "s_log.h" |
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#include "log.h" |
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#define KE_LENGTH 128 |
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/* jlemon goofed up and didn't add EV_SET until fbsd 4.3 */ |
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#ifndef EV_SET |
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#define EV_SET(kevp, a, b, c, d, e, f) do { \ |
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(kevp)->ident = (a); \ |
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(kevp)->filter = (b); \ |
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(kevp)->flags = (c); \ |
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(kevp)->fflags = (d); \ |
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(kevp)->data = (e); \ |
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(kevp)->udata = (f); \ |
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} while(0) |
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#endif |
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enum { KE_LENGTH = 128 }; |
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static fde_t kqfd; |
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static struct kevent kq_fdlist[KE_LENGTH]; /* kevent buffer */ |
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static int kqoff; /* offset into the buffer */ |
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void init_netio(void); |
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/* |
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* init_netio |
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if ((fd = kqueue()) < 0) |
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{ |
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ilog(L_CRIT, "init_netio: Couldn't open kqueue fd!"); |
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exit(115); /* Whee! */ |
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ilog(LOG_TYPE_IRCD, "init_netio: couldn't open kqueue fd: %s", strerror(errno)); |
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exit(EXIT_FAILURE); /* Whee! */ |
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} |
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fd_open(&kqfd, fd, 0, "kqueue() file descriptor"); |
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EV_SET(kep, (uintptr_t) fd, (short) filter, what, 0, 0, NULL); |
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if (kqoff == KE_LENGTH) |
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if (++kqoff == KE_LENGTH) |
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{ |
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kevent(kqfd.fd, kq_fdlist, kqoff, NULL, 0, &zero_timespec); |
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int i; |
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|
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for (i = 0; i < kqoff; ++i) |
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kevent(kqfd.fd, &kq_fdlist[i], 1, NULL, 0, &zero_timespec); |
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kqoff = 0; |
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} |
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else |
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kqoff++; |
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} |
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|
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/* |
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* and deregister interest in a pending IO state for a given FD. |
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*/ |
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void |
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comm_setselect(fde_t *F, unsigned int type, PF *handler, |
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comm_setselect(fde_t *F, unsigned int type, void (*handler)(fde_t *, void *), |
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void *client_data, time_t timeout) |
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{ |
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int new_events, diff; |
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} |
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new_events = (F->read_handler ? COMM_SELECT_READ : 0) | |
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(F->write_handler ? COMM_SELECT_WRITE : 0); |
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(F->write_handler ? COMM_SELECT_WRITE : 0); |
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if (timeout != 0) |
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{ |
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F->timeout = CurrentTime + (timeout / 1000); |
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F->timeout_handler = handler; |
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F->timeout_data = client_data; |
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} |
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diff = new_events ^ F->evcache; |
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int num, i; |
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static struct kevent ke[KE_LENGTH]; |
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struct timespec poll_time; |
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PF *hdl; |
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void (*hdl)(fde_t *, void *); |
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fde_t *F; |
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/* |
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if (num < 0) |
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{ |
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#ifdef HAVE_USLEEP |
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usleep(50000); /* avoid 99% CPU in comm_select */ |
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#endif |
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const struct timespec req = { .tv_sec = 0, .tv_nsec = 50000000 }; |
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nanosleep(&req, NULL); /* Avoid 99% CPU in comm_select */ |
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return; |
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} |
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continue; |
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if (ke[i].filter == EVFILT_READ) |
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{ |
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if ((hdl = F->read_handler) != NULL) |
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{ |
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F->read_handler = NULL; |
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hdl(F, F->read_data); |
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if (!F->flags.open) |
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continue; |
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if (!F->flags.open) |
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continue; |
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} |
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} |
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if (ke[i].filter == EVFILT_WRITE) |
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{ |
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if ((hdl = F->write_handler) != NULL) |
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{ |
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F->write_handler = NULL; |
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hdl(F, F->write_data); |
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if (!F->flags.open) |
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continue; |
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if (!F->flags.open) |
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continue; |
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} |
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} |
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comm_setselect(F, 0, NULL, NULL, 0); |
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} |
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} |
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#endif |
