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81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "io_internal.h"
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#ifdef HAVE_KQUEUE
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#include <sys/types.h>
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#include <sys/event.h>
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#include <sys/time.h>
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#endif
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#ifdef HAVE_EPOLL
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#include <inttypes.h>
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#include <sys/epoll.h>
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#endif
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#ifdef HAVE_SIGIO
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#include <sys/poll.h>
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#endif
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#ifdef HAVE_DEVPOLL
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/devpoll.h>
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#endif
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void io_wantwrite(int64 d) {
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int newfd;
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io_entry* e=array_get(&io_fds,sizeof(io_entry),d);
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if (!e || e->wantwrite) return;
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newfd=(!e->wantread && !e->wantwrite);
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io_wanted_fds+=newfd;
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#ifdef HAVE_EPOLL
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if (io_waitmode==EPOLL) {
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struct epoll_event x;
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x.events=EPOLLOUT;
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if (e->wantread) x.events|=EPOLLIN;
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x.data.fd=d;
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epoll_ctl(io_master,newfd?EPOLL_CTL_ADD:EPOLL_CTL_MOD,d,&x);
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}
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#endif
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#ifdef HAVE_KQUEUE
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if (io_waitmode==KQUEUE) {
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struct kevent kev;
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struct timespec ts;
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EV_SET(&kev, d, EVFILT_WRITE, EV_ADD|EV_ENABLE, 0, 0, 0);
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ts.tv_sec=0; ts.tv_nsec=0;
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kevent(io_master,&kev,1,0,0,&ts);
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}
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#endif
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#ifdef HAVE_DEVPOLL
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if (io_waitmode==DEVPOLL) {
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struct pollfd x;
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x.fd=d;
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x.events=POLLOUT;
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if (e->wantread) x.events|=POLLIN;
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write(io_master,&x,sizeof(x));
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}
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#endif
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#ifdef HAVE_SIGIO
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if (io_waitmode==_SIGIO) {
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struct pollfd p;
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p.fd=d;
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p.events=POLLOUT;
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switch (poll(&p,1,0)) {
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case 1: e->canwrite=1; break;
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case 0: e->canwrite=0; break;
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case -1: return;
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}
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if (e->canwrite) {
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debug_printf(("io_wantwrite: enqueueing %lld in normal write queue before %ld\n",d,first_readable));
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e->next_write=first_writeable;
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first_writeable=d;
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}
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}
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#endif
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#ifdef __MINGW32__
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if (!e->wantwrite) {
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e->next_write=first_writeable;
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first_writeable=d;
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}
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#endif
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e->wantwrite=1;
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}
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