Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
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#include <unistd.h>
#include <sys/time.h>
#include <poll.h>
#include <errno.h>
#include "io_internal.h"
int64 io_waituntil2(int64 milliseconds) {
struct pollfd* p;
long i,r;
if (!io_wanted_fds) return 0;
for (i=r=0; i<array_length(&io_fds,sizeof(io_entry)); ++i) {
io_entry* e=array_get(&io_fds,sizeof(io_entry),i);
if (!e) return -1;
e->canread=e->canwrite=0;
if (e->wantread || e->wantwrite) {
struct pollfd* p;
if ((p=array_allocate(&io_pollfds,sizeof(struct pollfd),r))) {
p->fd=i;
p->events=(e->wantread?POLLIN:0) + (e->wantwrite?POLLOUT:0);
++r;
} else
return -1;
}
}
p=array_start(&io_pollfds);
again:
while ((i=poll(array_start(&io_pollfds),r,milliseconds))==0);
if (i==-1) {
if (errno==EINTR) goto again;
return -1;
}
for (i=r-1; i>=0; --i) {
io_entry* e=array_get(&io_fds,sizeof(io_entry),p->fd);
if (p->revents&POLLIN) {
e->canread=1;
e->next_read=first_readable;
first_readable=p->fd;
}
if (p->revents&POLLOUT) {
e->canwrite=1;
e->next_write=first_writeable;
first_writeable=p->fd;
}
p++;
}
return i;
}