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Libbpf userspace function perf_buffer__epoll_fd

0.2.0

Get an file descriptor that can be used to sleep until data is available in the perf buffer.

Definition

int perf_buffer__epoll_fd(const struct perf_buffer *pb);

Parameters

  • pb: perf buffer to get the epoll set file descriptor for.

Returns

File descriptor of an epoll set that can be used to sleep until data is available in the perf buffer.

Usage

The returned file descriptor is created with epoll_create. The file descriptor can be used with epoll_wait to sleep until data is available in any of the perf buffer.

Example

Docs could be improved

This part of the docs is incomplete, contributions are very welcome