Originální popis anglicky:
posix_spawnattr_getflags, posix_spawnattr_setflags - get and set the spawn-flags
attribute of a spawn attributes object (
ADVANCED REALTIME)
Návod, kniha: POSIX Programmer's Manual
#include <spawn.h>
int posix_spawnattr_getflags(const posix_spawnattr_t *restrict
attr,
short *restrict
flags );
int posix_spawnattr_setflags(posix_spawnattr_t *
attr, short flags);
The
posix_spawnattr_getflags() function shall obtain the value of the
spawn-flags attribute from the attributes object referenced by
attr.
The
posix_spawnattr_setflags() function shall set the
spawn-flags
attribute in an initialized attributes object referenced by
attr.
The
spawn-flags attribute is used to indicate which process attributes
are to be changed in the new process image when invoking
posix_spawn()
or
posix_spawnp(). It is the bitwise-inclusive OR of zero or more of
the following flags:
POSIX_SPAWN_RESETIDS
POSIX_SPAWN_SETPGROUP
POSIX_SPAWN_SETSIGDEF
POSIX_SPAWN_SETSIGMASK
POSIX_SPAWN_SETSCHEDPARAM
POSIX_SPAWN_SETSCHEDULER
These flags are defined in
<spawn.h>. The default value of this
attribute shall be as if no flags were set.
Upon successful completion,
posix_spawnattr_getflags() shall return zero
and store the value of the
spawn-flags attribute of
attr into
the object referenced by the
flags parameter; otherwise, an error
number shall be returned to indicate the error.
Upon successful completion,
posix_spawnattr_setflags() shall return zero;
otherwise, an error number shall be returned to indicate the error.
These functions may fail if:
- EINVAL
- The value specified by attr is invalid.
The
posix_spawnattr_setflags() function may fail if:
- EINVAL
- The value of the attribute being set is not valid.
The following sections are informative.
None.
These functions are part of the Spawn option and need not be provided on all
implementations.
None.
None.
posix_spawn() ,
posix_spawnattr_destroy() ,
posix_spawnattr_init() ,
posix_spawnattr_getsigdefault() ,
posix_spawnattr_getpgroup() ,
posix_spawnattr_getschedparam() ,
posix_spawnattr_getschedpolicy() ,
posix_spawnattr_getsigmask()
,
posix_spawnattr_setsigdefault() ,
posix_spawnattr_setpgroup()
,
posix_spawnattr_setschedparam() ,
posix_spawnattr_setschedpolicy() ,
posix_spawnattr_setsigmask()
,
posix_spawnp() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<spawn.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
.
