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/*
* Copyright (c) 2011 William Pitcock <nenolod@dereferenced.org>.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "mowgli.h"
static mowgli_heap_t *pollable_heap = NULL;
mowgli_eventloop_pollable_t *
mowgli_pollable_create(mowgli_eventloop_t *eventloop, mowgli_descriptor_t fd, void *userdata)
{
mowgli_eventloop_pollable_t *pollable;
return_val_if_fail(eventloop != NULL, NULL);
if (pollable_heap == NULL)
pollable_heap = mowgli_heap_create(sizeof(mowgli_eventloop_pollable_t), 16, BH_NOW);
pollable = mowgli_heap_alloc(pollable_heap);
pollable->eventloop = eventloop;
pollable->type.type = MOWGLI_EVENTLOOP_TYPE_POLLABLE;
pollable->fd = fd;
pollable->userdata = userdata;
return pollable;
}
void
mowgli_pollable_destroy(mowgli_eventloop_t *eventloop, mowgli_eventloop_pollable_t *pollable)
{
return_if_fail(eventloop != NULL);
return_if_fail(pollable != NULL);
/* unregister any interest in the pollable. */
eventloop->eventloop_ops->destroy(eventloop, pollable);
mowgli_heap_free(pollable_heap, pollable);
}
void
mowgli_pollable_setselect(mowgli_eventloop_t *eventloop, mowgli_eventloop_pollable_t *pollable, mowgli_eventloop_io_dir_t dir, mowgli_eventloop_io_cb_t *event_function)
{
return_if_fail(eventloop != NULL);
return_if_fail(pollable != NULL);
return_if_fail(eventloop->eventloop_ops != NULL);
eventloop->eventloop_ops->setselect(eventloop, pollable, dir, event_function);
}
void
mowgli_pollable_set_nonblocking(mowgli_eventloop_pollable_t *pollable, bool nonblocking)
{
#if defined(HAVE_FCNTL)
unsigned long flags;
return_if_fail(pollable != NULL);
flags = fcntl(pollable->fd, F_GETFL);
if (nonblocking)
flags |= O_NONBLOCK;
else
flags &= ~O_NONBLOCK;
fcntl(pollable->fd, F_SETFL, flags);
#elif defined(HAVE_WINSOCK2_H)
u_long mode;
return_if_fail(pollable != NULL);
mode = nonblocking;
ioctlsocket(pollable->fd, FIONBIO, &mode);
#endif
}
void
mowgli_pollable_set_cloexec(mowgli_eventloop_pollable_t *pollable, bool cloexec)
{
#if defined(FD_CLOEXEC)
unsigned long flags;
return_if_fail(pollable != NULL);
flags = fcntl(pollable->fd, F_GETFD);
if (cloexec)
flags |= FD_CLOEXEC;
else
flags &= ~FD_CLOEXEC;
fcntl(pollable->fd, F_SETFD, flags);
#elif defined(HAVE_WINSOCK2_H)
return_if_fail(pollable != NULL);
SetHandleInformation((HANDLE)pollable->fd, HANDLE_FLAG_INHERIT, !cloexec);
#endif
}
void
mowgli_pollable_trigger(mowgli_eventloop_t *eventloop, mowgli_eventloop_pollable_t *pollable, mowgli_eventloop_io_dir_t dir)
{
mowgli_eventloop_io_cb_t *event_function;
return_if_fail(eventloop != NULL);
return_if_fail(pollable != NULL);
switch (dir)
{
case MOWGLI_EVENTLOOP_IO_READ:
event_function = pollable->read_function;
break;
case MOWGLI_EVENTLOOP_IO_WRITE:
event_function = pollable->write_function;
break;
default:
event_function = NULL;
return;
}
if (event_function == NULL)
return;
event_function(eventloop, pollable, dir, pollable->userdata);
}
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