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/*
* Copyright (c) 2009, Cybozu Labs, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of the <ORGANIZATION> nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*/
#ifndef _WIN32
# include <sys/select.h>
#else
# include <ws2tcpip.h>
#endif
#include "picoev.h"
#ifdef _WIN32
# define PICOEV_W32_INTERNAL
# include "picoev_w32.h"
# define PICOEV_FD_SET(x, y) FD_SET(picoev_w32_fd2sock(x), y)
# define PICOEV_FD_ISSET(x, y) FD_ISSET(picoev_w32_fd2sock(x), y)
typedef struct picoev_w32_globals_st {
int* fds;
void* _fds_free_addr;
} picoev_w32_globals;
picoev_w32_globals picoev_w32;
int picoev_w32_sock2fd(int sock) {
int i;
for (i = 0; i < picoev.max_fd && picoev_w32.fds[i]; ++i)
if (picoev_w32.fds[i] == sock) return i;
assert(PICOEV_IS_INITED_AND_FD_IN_RANGE(i));
picoev_w32.fds[i] = sock;
return i;
}
int picoev_w32_fd2sock(int fd) {
assert(PICOEV_IS_INITED_AND_FD_IN_RANGE(fd));
return picoev_w32.fds[fd];
}
extern int picoev_w32_deinit(void);
int picoev_w32_init(int max_fd) {
int r = picoev_init(max_fd);
if ((picoev_w32.fds = (int*)picoev_memalign(sizeof(int) * max_fd,
&picoev_w32._fds_free_addr, 1))
== NULL) {
picoev_deinit();
return -1;
}
}
int picoev_w32_deinit(void) {
free(picoev_w32._fds_free_addr);
picoev_w32.fds = NULL;
picoev_w32._fds_free_addr = NULL;
return picoev_deinit();
}
#else
# define PICOEV_FD_SET(x, y) FD_SET(x, y)
# define PICOEV_FD_ISSET(x, y) FD_ISSET(x, y)
#endif
picoev_globals picoev;
picoev_loop* picoev_create_loop(int max_timeout)
{
picoev_loop* loop;
assert(PICOEV_IS_INITED);
if ((loop = (picoev_loop*)malloc(sizeof(picoev_loop))) == NULL) {
return NULL;
}
if (picoev_init_loop_internal(loop, max_timeout) != 0) {
free(loop);
return NULL;
}
loop->now = time(NULL);
return loop;
}
int picoev_destroy_loop(picoev_loop* loop)
{
picoev_deinit_loop_internal(loop);
free(loop);
return 0;
}
int picoev_update_events_internal(picoev_loop* loop, int fd, int events)
{
picoev.fds[fd].events = events & PICOEV_READWRITE;
return 0;
}
int picoev_poll_once_internal(picoev_loop* loop, int max_wait)
{
fd_set readfds, writefds, errorfds;
struct timeval tv;
int i, r, maxfd = 0;
/* setup */
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_ZERO(&errorfds);
for (i = 0; i < picoev.max_fd; ++i) {
picoev_fd* fd = picoev.fds + i;
if (fd->loop_id == loop->loop_id) {
if ((fd->events & PICOEV_READ) != 0) {
PICOEV_FD_SET(i, &readfds);
if (maxfd < i) {
maxfd = i;
}
}
if ((fd->events & PICOEV_WRITE) != 0) {
PICOEV_FD_SET(i, &writefds);
if (maxfd < i) {
maxfd = i;
}
}
}
}
/* select and handle if any */
tv.tv_sec = max_wait;
tv.tv_usec = 0;
r = select(maxfd + 1, &readfds, &writefds, &errorfds, &tv);
if (r == -1) {
return -1;
} else if (r > 0) {
for (i = 0; i < picoev.max_fd; ++i) {
picoev_fd* target = picoev.fds + i;
if (target->loop_id == loop->loop_id) {
int revents = (PICOEV_FD_ISSET(i, &readfds) ? PICOEV_READ : 0)
| (PICOEV_FD_ISSET(i, &writefds) ? PICOEV_WRITE : 0);
if (revents != 0) {
(*target->callback)(loop, i, revents, target->cb_arg);
}
}
}
}
return 0;
}
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