signal(7) — Linux manual page - man7.org
The Linux kernel supports a range of 33 different real-time signals, numbered 32 to 64. However, the glibc POSIX threads implementation internally uses two (for NPTL) or three (for LinuxThreads) real-time signals (see pthreads (7)), and adjusts the value of SIGRTMIN suitably (to 34 or 35).
signal(2) — Linux manual page - man7.org
signal() sets the disposition of the signal signum to handler, which is either SIG_IGN, SIG_DFL, or the address of a programmer- defined function (a "signal handler").
raise(3) — Linux manual page - man7.org
The raise() function sends a signal to the calling process or thread. In a single-threaded program it is equivalent to kill(getpid(), sig); In a multithreaded program it is equivalent to pthread_kill(pthread_self(), sig); If the signal causes a handler to be called, raise () will return only after the signal handler has returned.
kill(2) — Linux manual page - man7.org
The kill() system call can be used to send any signal to any process group or process. If pid is positive, then signal sig is sent to the process with the ID specified by pid. If pid equals 0, then sig is sent to every process in the process group of the calling process.
signalfd(2) — Linux manual page - man7.org
DESCRIPTION top. signalfd () creates a file descriptor that can be used to accept. signals targeted at the caller. This provides an alternative to. the use of a signal handler or sigwaitinfo(2), and has the. advantage that the file descriptor may …
signal.h(0p) — Linux manual page - man7.org
The <signal.h> header shall define the following macros that are used to refer to the signals that occur in the system. Signals defined here begin with the letters SIG followed by an uppercase letter.
sigprocmask(2) — Linux manual page - man7.org
sigprocmask() is used to fetch and/or change the signal mask of the calling thread. The signal mask is the set of signals whose delivery is currently blocked for the caller (see also signal(7) for more details). The behavior of the call is dependent on the value of how, as follows.
sigpending(2) — Linux manual page - man7.org
sigpending() returns the set of signals that are pending for delivery to the calling thread (i.e., the signals which have been raised while blocked). The mask of pending signals is returned in set .
abort(3) — Linux manual page - man7.org
The abort () function first unblocks the SIGABRT signal, and then raises that signal for the calling process (as though raise (3) was called). This results in the abnormal termination of the process unless the SIGABRT signal is caught and the signal handler does not return (see longjmp (3)).
alarm(2) — Linux manual page - man7.org
alarm() arranges for a SIGALRM signal to be delivered to the calling process in seconds seconds. If seconds is zero, any pending alarm is canceled. In any event any previously set alarm () is canceled.