Provided by: manpages-dev_2.17-1_all
epoll_create - open an epoll file descriptor
int epoll_create(int size)
Open an epoll file descriptor by requesting the kernel allocate an
event backing store dimensioned for size descriptors. The size is not
the maximum size of the backing store but just a hint to the kernel
about how to dimension internal structures. The returned file
descriptor will be used for all the subsequent calls to the epoll
interface. The file descriptor returned by epoll_create(2) must be
closed by using close(2).
When successful, epoll_create(2) returns a non-negative integer
identifying the descriptor. When an error occurs, epoll_create(2)
returns -1 and errno is set appropriately.
EINVAL size is not positive.
ENFILE The system limit on the total number of open files has
ENOMEM There was insufficient memory to create the kernel
epoll_create(2) is a new API introduced in Linux kernel 2.5.44.
The interface should be finalized by Linux kernel 2.5.66.
close(2), epoll_ctl(2), epoll_wait(2), epoll(4)