abort2 man page on FreeBSD

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ABORT2(2)		    BSD System Calls Manual		     ABORT2(2)

NAME
     abort2 — abort process with diagnostics

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdlib.h>

     void
     abort2(const char *why, int nargs, void **args);

DESCRIPTION
     The abort2() system call causes the process to be killed and the speci‐
     fied diagnostic message (with arguments) to be delivered by the kernel to
     the syslogd(8) daemon.

     The why argument points to a NUL-terminated string specifying a reason of
     the program's termination (maximum 128 characters long).  The args array
     contains pointers which will be logged numerically (with the kernel's
     ‘%p’ printf(9) format).  The nargs argument specifies the number of
     pointers in args (maximum 16).

     The abort2() system call is intended for use in situations where continu‐
     ation of a process is impossible or for other definitive reasons is
     unwanted, and normal diagnostic channels cannot be trusted to deliver the
     message.

RETURN VALUES
     The abort2() function never returns.

     The process is killed with SIGABRT unless the arguments to abort2() are
     invalid, in which case SIGKILL is used.

EXAMPLES
     #include <stdlib.h>

     if (weight_kg > max_load) {
	     void *ptrs[3];

	     ptrs[0] = (void *)(intptr_t)weight_kg;
	     ptrs[1] = (void *)(intptr_t)max_load;
	     ptrs[2] = haystack;
	     abort2("Camel overloaded", 3, ptrs);
     }

SEE ALSO
     abort(3), exit(3)

HISTORY
     The abort2() system call first appeared in FreeBSD 7.0.

AUTHORS
     The abort2() system call was designed by Poul-Henning Kamp
     ⟨phk@FreeBSD.org⟩.	 It was implemented by Wojciech A. Koszek
     ⟨dunstan@freebsd.czest.pl⟩.

BSD			      September 30, 2006			   BSD
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