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40 lines
990 B
C
40 lines
990 B
C
21 years ago
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#include <unistd.h>
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#include <sys/time.h>
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#include <poll.h>
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#include <errno.h>
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#include "io_internal.h"
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int64 io_waituntil2(int64 milliseconds) {
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struct pollfd* p;
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long i,r;
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if (!io_wanted_fds) return 0;
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for (i=r=0; i<array_length(&io_fds,sizeof(io_entry)); ++i) {
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io_entry* e=array_get(&io_fds,sizeof(io_entry),i);
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if (!e) return -1;
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e->canread=e->canwrite=0;
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if (e->wantread || e->wantwrite) {
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struct pollfd* p;
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if ((p=array_allocate(&io_pollfds,sizeof(struct pollfd),r))) {
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p->fd=i;
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p->events=(e->wantread?POLLIN:0) + (e->wantwrite?POLLOUT:0);
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++r;
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} else
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return -1;
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}
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}
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p=array_start(&io_pollfds);
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again:
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while ((i=poll(array_start(&io_pollfds),r,milliseconds))==0);
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if (i==-1) {
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if (errno==EINTR) goto again;
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return -1;
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}
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for (i=0; i<r; ++i) {
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io_entry* e=array_get(&io_fds,sizeof(io_entry),p->fd);
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if (p->revents&POLLIN) e->canread=1;
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if (p->revents&POLLOUT) e->canwrite=1;
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p++;
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}
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return i;
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}
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