Originální popis anglicky:
abort - generate an abnormal process abort
Návod, kniha: POSIX Programmer's Manual
#include <stdlib.h>
void abort(void);
The
abort() function shall cause abnormal process termination to occur,
unless the signal SIGABRT is being caught and the signal handler does not
return.
The abnormal termination processing shall include the default actions defined
for SIGABRT and may include an attempt to effect
fclose() on all open
streams.
The SIGABRT signal shall be sent to the calling process as if by means of
raise() with the argument SIGABRT.
The status made available to
wait() or
waitpid() by
abort()
shall be that of a process terminated by the SIGABRT signal. The
abort() function shall override blocking or ignoring the SIGABRT
signal.
The
abort() function shall not return.
No errors are defined.
The following sections are informative.
None.
Catching the signal is intended to provide the application writer with a
portable means to abort processing, free from possible interference from any
implementation-defined functions.
The ISO/IEC 9899:1999 standard requires the
abort() function to be
async-signal-safe. Since IEEE Std 1003.1-2001 defers to the
ISO C standard, this required a change to the DESCRIPTION from ``shall
include the effect of
fclose()'' to ``may include an attempt to effect
fclose().''
The revised wording permits some backwards-compatibility and avoids a potential
deadlock situation.
The Open Group Base Resolution bwg2002-003 is applied, removing the following
XSI shaded paragraph from the DESCRIPTION:
``On XSI-conformant systems, in addition the abnormal termination processing
shall include the effect of
fclose() on message catalog descriptors.''
There were several reasons to remove this paragraph:
- *
- No special processing of open message catalogs needs to be
performed prior to abnormal process termination.
- *
- The main reason to specifically mention that abort()
includes the effect of fclose() on open streams is to flush output
queued on the stream. Message catalogs in this context are read-only and,
therefore, do not need to be flushed.
- *
- The effect of fclose() on a message catalog
descriptor is unspecified. Message catalog descriptors are allowed, but
not required to be implemented using a file descriptor, but there is no
mention in IEEE Std 1003.1-2001 of a message catalog
descriptor using a standard I/O stream FILE object as would be expected by
fclose().
None.
exit() ,
kill() ,
raise() ,
signal() ,
wait()
,
waitpid() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<stdlib.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
