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#include <sys/eventfd.h>
#include <errno.h>
#include <bits/ensure.h>
#include <mlibc/linux-sysdeps.hpp>
int eventfd(unsigned int initval, int flags) {
int fd = 0;
MLIBC_CHECK_OR_ENOSYS(mlibc::sys_eventfd_create, -1);
if (int e = mlibc::sys_eventfd_create(initval, flags, &fd); e) {
errno = e;
return -1;
}
return fd;
}
int eventfd_read(int fd, eventfd_t *value) {
ssize_t bytes_read;
if (int e = mlibc::sys_read(fd, value, 8, &bytes_read); e) {
errno = e;
return -1;
}
if (bytes_read != 8) {
return -1;
}
return 0;
}
int eventfd_write(int fd, eventfd_t value) {
ssize_t bytes_written;
if (int e = mlibc::sys_write(fd, &value, 8, &bytes_written); e) {
errno = e;
return -1;
}
if (bytes_written != 8) {
return -1;
}
return 0;
}
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