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abort (3)
  • abort (3) ( Solaris man: Библиотечные вызовы )
  • abort (3) ( FreeBSD man: Библиотечные вызовы )
  • abort (3) ( Русские man: Библиотечные вызовы )
  • abort (3) ( Linux man: Библиотечные вызовы )
  • >> abort (3) ( POSIX man: Библиотечные вызовы )
  • abort (7) ( Linux man: Макропакеты и соглашения )
  •  

    NAME

    abort - generate an abnormal process abort
     
    

    SYNOPSIS

    #include <stdlib.h>

    void abort(void);
     

    DESCRIPTION

    The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to the ISO C standard.

    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.  

    RETURN VALUE

    The abort() function shall not return.  

    ERRORS

    No errors are defined.

    The following sections are informative.  

    EXAMPLES

    None.  

    APPLICATION USAGE

    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.  

    RATIONALE

    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().

     

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    exit() , kill() , raise() , signal() , wait() , waitpid() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdlib.h>  

    COPYRIGHT

    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 .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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