NAME

psiginfo, psignal - print signal information to standard error

SYNOPSIS

[CX] #include <signal.h>

void psiginfo(const siginfo_t *pinfo, const char *message);
void psignal(int signum, const char *message);

DESCRIPTION

The psiginfo() and psignal() functions shall print a message out on stderr associated with a signal number. If message is not null and is not the empty string, then the string pointed to by the message argument shall be printed first, followed by a <colon>, a <space>, and the signal description string indicated by signum, or by the signal associated with pinfo. If the message argument is null or points to an empty string, then only the signal description shall be printed. For psiginfo(), the argument pinfo references a valid siginfo_t structure. For psignal(), if signum is not a valid signal number, the behavior is implementation-defined.

The psiginfo() and psignal() functions shall not change the orientation of the standard error stream.

The psiginfo() and psignal() functions shall mark for update the last data modification and last file status change timestamps of the file associated with the standard error stream at some time between their successful completion and exit(), abort(), or the completion of fflush() or fclose() on stderr.

RETURN VALUE

These functions shall not return a value.

ERRORS

No errors are defined.

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

System V historically has psignal() and psiginfo() in <siginfo.h>. However, the <siginfo.h> header is not specified in the Base Definitions volume of POSIX.1-2008, and the type siginfo_t is defined in <signal.h>.

FUTURE DIRECTIONS

None.

SEE ALSO

perror , strsignal

XBD <signal.h>

CHANGE HISTORY

First released in Issue 7.