описание сигнала печати (print signal description)
Имя (Name)
psignal, psiginfo - print signal description
Синопсис (Synopsis)
#include <signal.h>
void psignal(int sig, const char *s);
void psiginfo(const siginfo_t *pinfo, const char *s);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
psignal():
Since glibc 2.19:
_DEFAULT_SOURCE
Glibc 2.19 and earlier:
_BSD_SOURCE || _SVID_SOURCE
psiginfo():
_POSIX_C_SOURCE >= 200809L
Описание (Description)
The psignal() function displays a message on stderr consisting of
the string s, a colon, a space, a string describing the signal
number sig, and a trailing newline. If the string s is NULL or
empty, the colon and space are omitted. If sig is invalid, the
message displayed will indicate an unknown signal.
The psiginfo() function is like psignal(), except that it
displays information about the signal described by pinfo, which
should point to a valid siginfo_t structure. As well as the
signal description, psiginfo() displays information about the
origin of the signal, and other information relevant to the
signal (e.g., the relevant memory address for hardware-generated
signals, the child process ID for SIGCHLD, and the user ID and
process ID of the sender, for signals set using kill(2) or
sigqueue(3)).
Возвращаемое значение (Return value)
The psignal() and psiginfo() functions return no value.
Версии (Versions)
The psiginfo() function was added to glibc in version 2.10.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│psignal(), psiginfo() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
Стандарты (Conforming to)
POSIX.1-2008, 4.3BSD.
Ошибки (баги) (Bugs)
In glibc versions up to 2.12, psiginfo() had the following bugs:
* In some circumstances, a trailing newline is not printed.
* Additional details are not displayed for real-time signals.
Смотри также (See also)
sigaction(2), perror(3), strsignal(3), signal(7)
