Open System Services System Calls Reference Manual (G06.25+, H06.03+)

signal(4) OSS System Calls Reference Manual
The Signals
The following table lists each signal name and corresponding signal number and default action.
On receipt of one of these signals, the application can elect to:
• Accept the default action; see Default Action, later in this reference page.
• Ignore the signal; see Ignoring a Signal, later.
• Catch the signal by invoking a signal-specific function; see Catching a Signal, later.
Note that the SIGKILL, SIGSTOP, and SIGABEND signals can neither be caught nor ignored.
Table 11−8. Signals
Default Action Description
Name Number
_____________________________________________________________________________________
Terminate with saveabend Abnormal termination
SIGABEND 31
Terminate with saveabend Abort process
SIGABRT 6
SIGALRM 14 Terminate process Alarm clock
Discard signal Child has stopped or terminatedSIGCHLD 18
Continue execution Continue executionSIGCONT 28
Terminate with saveabend Arithmetic overflowSIGFPE 8
Terminate process HangupSIGHUP 1
Terminate with saveabend Invalid instructionSIGILL 4
Terminate process InterruptSIGINT 2
Discard signal Input/output possible or com-
pleted
SIGIO 7
Terminate process KillSIGKILL 9
Terminate with saveabend Operating system limits trapSIGLIMIT 27
Terminate with saveabend Uncorrectable memory errorSIGMEMERR 22
Terminate with saveabend Memory manager read errorSIGMEMMGR 24
Terminate with saveabend No memory availableSIGNOMEM 23
Terminate process Write on a pipe, no one to read itSIGPIPE 13
Terminate with saveabend QuitSIGQUIT 3
Discard signal Message queued on $RECEIVE
(currently not used)
SIGRECV 19
Terminate with saveabend Invalid address referenceSIGSEGV 11
Terminate with saveabend Stack overflowSIGSTK 25
Stop process StopSIGSTOP 20
Terminate process Software termination signalSIGTERM 15
Terminate process Process loop timer timeoutSIGTIMEOUT 26
Stop process Interactive stopSIGTSTP 21
Stop process Background read attempted from
controlling terminal
SIGTTIN 29
Stop process Background write attempted to
controlling terminal
SIGTTOU 30
Discard signal Uncooperative process (H-series
servers only)
SIGUNCP 10
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