Chapter 17. Signal Tapset

Table of Contents

function::get_sa_flags — Returns the numeric value of sa_flags
function::get_sa_handler — Returns the numeric value of sa_handler
function::is_sig_blocked — Returns 1 if the signal is currently blocked, or 0 if it is not
function::sa_flags_str — Returns the string representation of sa_flags
function::sa_handler_str — Returns the string representation of an sa_handler
function::signal_str — Returns the string representation of a signal number
function::sigset_mask_str — Returns the string representation of a sigset
probe::signal.check_ignored — Checking to see signal is ignored
probe::signal.check_ignored.return — Check to see signal is ignored completed
probe::signal.checkperm — Check being performed on a sent signal
probe::signal.checkperm.return — Check performed on a sent signal completed
probe::signal.do_action — Examining or changing a signal action
probe::signal.do_action.return — Examining or changing a signal action completed
probe::signal.flush — Flushing all pending signals for a task
probe::signal.force_segv — Forcing send of SIGSEGV
probe::signal.force_segv.return — Forcing send of SIGSEGV complete
probe::signal.handle — Signal handler being invoked
probe::signal.handle.return — Signal handler invocation completed
probe::signal.pending — Examining pending signal
probe::signal.pending.return — Examination of pending signal completed
probe::signal.procmask — Examining or changing blocked signals
probe::signal.procmask.return — Examining or changing blocked signals completed
probe::signal.send — Signal being sent to a process
probe::signal.send.return — Signal being sent to a process completed (deprecated in SystemTap 2.1)
probe::signal.send_sig_queue — Queuing a signal to a process
probe::signal.send_sig_queue.return — Queuing a signal to a process completed
probe::signal.sys_tgkill — Sending kill signal to a thread group
probe::signal.sys_tgkill.return — Sending kill signal to a thread group completed
probe::signal.sys_tkill — Sending a kill signal to a thread
probe::signal.syskill — Sending kill signal to a process
probe::signal.syskill.return — Sending kill signal completed
probe::signal.systkill.return — Sending kill signal to a thread completed
probe::signal.wakeup — Sleeping process being wakened for signal

This family of probe points is used to probe signal activities. It contains the following probe points: