TIMERFD(5) Standards, Environments, and Macros TIMERFD(5)

NAME


timerfd - Linux-compatible timer notification facility

SYNOPSIS


#include <sys/timerfd.h>

DESCRIPTION


timerfd is a Linux-borne facility for creating POSIX timers and receiving
their subsequent events via a file descriptor. The facility itself is
arguably unnecessary: portable code can either use the timeout value
present in poll(2) / port_get(3C) or -- if this is deemed of unacceptably
poor resolution -- create a POSIX timer via timer_create(3C) and use the
resulting signal to induce an EINTR to polling threads. (For code that
need not be portable, the SIGEV_PORT signal notification allows for
explicit, event-oriented timer notification to be sent to a specified port;
see signal.h(3HEAD) for details.) This facility therefore exists only to
accommodate Linux-borne applications and binaries; it is compatible with
its Linux antecedent in both binary interface and in semantics.

SEE ALSO


timerfd_create(3C), timerfd_gettime(3C), timerfd_settime(3C)

illumos February 23, 2015 illumos