epollcreate1int

epoll_create1 is a system call that creates an epoll file descriptor, which is used for high-level inter-process communication (IPC) and synchronization. It is designed to be more efficient than the traditional select or poll system calls, especially for applications that need to handle a large number of file descriptors.

The epoll_create1 system call creates a new epoll file descriptor, which can be used to add file descriptors to the poll list, wait for events to occur on those file descriptors, and remove file descriptors from the poll list. The epoll_create1 call takes one argument, flags, which can be used to specify options such as whether the epoll file descriptor should be created with the EPOLL_CLOEXEC flag, which causes the file descriptor to be closed when the parent process exits.

The epoll_create1 system call returns a file descriptor that can be used in subsequent epoll system calls, such as epoll_ctl and epoll_wait. The epoll file descriptor is a powerful tool that can be used to implement a wide range of IPC and synchronization utilities, including locks, semaphores, and message queues.

The epoll_create1 call is supported on Linux systems, and is a part of the standard library. It is often used in high-performance applications, such as network servers, databases, and web servers, where a large number of file descriptors need to be managed concurrently.

In summary, epoll_create1 is a system call that creates an epoll file descriptor, which is used for high-level IPC and synchronization on Linux systems. It provides a powerful tool for managing a large number of file descriptors concurrently, and is often used in high-performance applications.